blob: 8134c107f194ebd8bc08f696b7723b14856852ab [file] [log] [blame]
Paul Elliott2238eed2022-07-08 18:19:12 +01001Mbed TLS ChangeLog (Sorted per branch, date)
2
David Horstmann255afcb2024-10-11 19:42:00 +01003= Mbed TLS 3.6.2 branch released 2024-10-11
David Horstmannee649bc2024-10-11 19:41:59 +01004
5Security
6 * Fix a buffer overflow in mbedtls_pk_write_pubkey(),
7 mbedtls_pk_write_pubkey_der() and mbedtls_pk_write_key_der().
8 With MBEDTLS_USE_PSA_CRYPTO turned on, these functions would
9 write to a location before the start of the output buffer if it was less
10 than the size of the key being written and also less than
11 PK_MAX_EC_PUBLIC_KEY_SIZE (for EC public keys) and
12 PSA_EXPORT_KEY_PAIR_MAX_SIZE (for RSA private keys).
13 This buffer overflow only occurs for keys with the type MBEDTLS_PK_OPAQUE.
14
David Horstmannea44fa72024-08-28 20:49:08 +010015= Mbed TLS 3.6.1 branch released 2024-08-30
David Horstmann9cf929d2024-08-28 20:48:36 +010016
17API changes
18 * The experimental functions psa_generate_key_ext() and
19 psa_key_derivation_output_key_ext() are no longer declared when compiling
20 in C++. This resolves a build failure under C++ compilers that do not
21 support flexible array members (a C99 feature not adopted by C++).
22 Fixes #9020.
23
24Default behavior changes
25 * In a PSA-client-only build (i.e. MBEDTLS_PSA_CRYPTO_CLIENT &&
26 !MBEDTLS_PSA_CRYPTO_C), do not automatically enable local crypto when the
27 corresponding PSA mechanism is enabled, since the server provides the
28 crypto. Fixes #9126.
David Horstmann4c8ca722024-08-28 20:58:24 +010029 * A TLS handshake may now call psa_crypto_init() if TLS 1.3 is enabled.
30 This can happen even if TLS 1.3 is offered but eventually not selected
31 in the protocol version negotiation.
32 * By default, the handling of TLS 1.3 tickets by the Mbed TLS client is now
33 disabled at runtime. Applications that were using TLS 1.3 tickets
34 signalled by MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET return values now
35 need to enable the handling of TLS 1.3 tickets through the new
36 mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets() API.
David Horstmann9cf929d2024-08-28 20:48:36 +010037
38New deprecations
39 * The experimental functions psa_generate_key_ext() and
40 psa_key_derivation_output_key_ext() are deprecated in favor of
41 psa_generate_key_custom() and psa_key_derivation_output_key_custom().
42 They have almost exactly the same interface, but the variable-length
43 data is passed in a separate parameter instead of a flexible array
44 member.
45 * The following cryptographic mechanisms are planned to be removed
46 in Mbed TLS 4.0:
47 - DES (including 3DES).
48 - PKCS#1v1.5 encryption/decryption (RSAES-PKCS1-v1_5).
49 (OAEP, PSS, and PKCS#1v1.5 signature are staying.)
50 - Finite-field Diffie-Hellman with custom groups.
51 (RFC 7919 groups remain supported.)
52 - Elliptic curves of size 225 bits or less.
53 * The following cipher suites are planned to be removed from (D)TLS 1.2
54 in Mbed TLS 4.0:
55 - TLS_RSA_* (including TLS_RSA_PSK_*), i.e. cipher suites using
56 RSA decryption.
57 (RSA signatures, i.e. TLS_ECDHE_RSA_*, are staying.)
58 - TLS_ECDH_*, i.e. cipher suites using static ECDH.
59 (Ephemeral ECDH, i.e. TLS_ECDHE_*, is staying.)
60 - TLS_DHE_*, i.e. cipher suites using finite-field Diffie-Hellman.
61 (Ephemeral ECDH, i.e. TLS_ECDHE_*, is staying.)
62 - TLS_*CBC*, i.e. all cipher suites using CBC.
63 * The following low-level application interfaces are planned to be removed
64 from the public API in Mbed TLS 4.0:
65 - Hashes: hkdf.h, md5.h, ripemd160.h, sha1.h, sha3.h, sha256.h, sha512.h;
66 - Random generation: ctr_drbg.h, hmac_drbg.h, entropy.h;
67 - Ciphers and modes: aes.h, aria.h, camellia.h, chacha20.h, chachapoly.h,
68 cipher.h, cmac.h, gcm.h, poly1305.h;
69 - Private key encryption mechanisms: pkcs5.h, pkcs12.h.
70 - Asymmetric cryptography: bignum.h, dhm.h, ecdh.h, ecdsa.h, ecjpake.h,
71 ecp.h, rsa.h.
72 The cryptographic mechanisms remain present, but they will only be
73 accessible via the PSA API (psa_xxx functions introduced gradually
74 starting with Mbed TLS 2.17) and, where relevant, `pk.h`.
75 For guidance on migrating application code to the PSA API, please consult
76 the PSA transition guide (docs/psa-transition.md).
77 * The following integration interfaces are planned to be removed
78 in Mbed TLS 4.0:
79 - MBEDTLS_xxx_ALT replacement of cryptographic modules and functions.
80 Use PSA transparent drivers instead.
81 - MBEDTLS_PK_RSA_ALT and MBEDTLS_PSA_CRYPTO_SE_C.
82 Use PSA opaque drivers instead.
83
84Features
85 * When the new compilation option MBEDTLS_PSA_KEY_STORE_DYNAMIC is enabled,
86 the number of volatile PSA keys is virtually unlimited, at the expense
87 of increased code size. This option is off by default, but enabled in
88 the default mbedtls_config.h. Fixes #9216.
89
90Security
91 * Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does
92 not cause the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when
93 MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and MBEDTLS_CTR_DRBG_C are disabled.
David Horstmannfedf9a22024-08-28 19:04:26 +010094 CVE-2024-45157
David Horstmann9cf929d2024-08-28 20:48:36 +010095 * Fix a stack buffer overflow in mbedtls_ecdsa_der_to_raw() and
96 mbedtls_ecdsa_raw_to_der() when the bits parameter is larger than the
97 largest supported curve. In some configurations with PSA disabled,
98 all values of bits are affected. This never happens in internal library
99 calls, but can affect applications that call these functions directly.
David Horstmannfedf9a22024-08-28 19:04:26 +0100100 CVE-2024-45158
David Horstmann9cf929d2024-08-28 20:48:36 +0100101 * With TLS 1.3, when a server enables optional authentication of the
102 client, if the client-provided certificate does not have appropriate values
103 in keyUsage or extKeyUsage extensions, then the return value of
104 mbedtls_ssl_get_verify_result() would incorrectly have the
105 MBEDTLS_X509_BADCERT_KEY_USAGE and MBEDTLS_X509_BADCERT_EXT_KEY_USAGE bits
106 clear. As a result, an attacker that had a certificate valid for uses other
107 than TLS client authentication could be able to use it for TLS client
108 authentication anyway. Only TLS 1.3 servers were affected, and only with
109 optional authentication (required would abort the handshake with a fatal
110 alert).
David Horstmannfedf9a22024-08-28 19:04:26 +0100111 CVE-2024-45159
David Horstmann9cf929d2024-08-28 20:48:36 +0100112
113Bugfix
114 * Fix TLS 1.3 client build and runtime when support for session tickets is
115 disabled (MBEDTLS_SSL_SESSION_TICKETS configuration option). Fixes #6395.
116 * Fix compilation error when memcpy() is a function-like macros. Fixes #8994.
117 * MBEDTLS_ASN1_PARSE_C and MBEDTLS_ASN1_WRITE_C are now automatically enabled
118 as soon as MBEDTLS_RSA_C is enabled. Fixes #9041.
119 * Fix undefined behaviour (incrementing a NULL pointer by zero length) when
120 passing in zero length additional data to multipart AEAD.
121 * Fix rare concurrent access bug where attempting to operate on a
122 non-existent key while concurrently creating a new key could potentially
123 corrupt the key store.
124 * Fix error handling when creating a key in a dynamic secure element
125 (feature enabled by MBEDTLS_PSA_CRYPTO_SE_C). In a low memory condition,
126 the creation could return PSA_SUCCESS but using or destroying the key
127 would not work. Fixes #8537.
128 * Fix issue of redefinition warning messages for _GNU_SOURCE in
129 entropy_poll.c and sha_256.c. There was a build warning during
130 building for linux platform.
131 Resolves #9026
132 * Fix a compilation warning in pk.c when PSA is enabled and RSA is disabled.
133 * Fix the build when MBEDTLS_PSA_CRYPTO_CONFIG is enabled and the built-in
134 CMAC is enabled, but no built-in unauthenticated cipher is enabled.
135 Fixes #9209.
136 * Fix redefinition warnings when SECP192R1 and/or SECP192K1 are disabled.
137 Fixes #9029.
138 * Fix psa_cipher_decrypt() with CCM* rejecting messages less than 3 bytes
139 long. Credit to Cryptofuzz. Fixes #9314.
140 * Fix interference between PSA volatile keys and built-in keys
141 when MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS is enabled and
142 MBEDTLS_PSA_KEY_SLOT_COUNT is more than 4096.
143 * Document and enforce the limitation of mbedtls_psa_register_se_key()
144 to persistent keys. Resolves #9253.
145 * Fix Clang compilation error when MBEDTLS_USE_PSA_CRYPTO is enabled
146 but MBEDTLS_DHM_C is disabled. Reported by Michael Schuster in #9188.
147 * Fix server mode only build when MBEDTLS_SSL_SRV_C is enabled but
148 MBEDTLS_SSL_CLI_C is disabled. Reported by M-Bab on GitHub in #9186.
149 * When MBEDTLS_PSA_CRYPTO_C was disabled and MBEDTLS_ECDSA_C enabled,
150 some code was defining 0-size arrays, resulting in compilation errors.
151 Fixed by disabling the offending code in configurations without PSA
152 Crypto, where it never worked. Fixes #9311.
153 * Fix unintended performance regression when using short RSA public keys.
154 Fixes #9232.
155 * Fixes an issue where some TLS 1.2 clients could not connect to an
156 Mbed TLS 3.6.0 server, due to incorrect handling of
157 legacy_compression_methods in the ClientHello.
158 Fixes #8995, #9243.
159 * Fix TLS connections failing when the handshake selects TLS 1.3
160 in an application that does not call psa_crypto_init().
161 Fixes #9072.
162 * Fix TLS connection failure in applications using an Mbed TLS client in
163 the default configuration connecting to a TLS 1.3 server sending tickets.
164 See the documentation of
165 mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets() for more
166 information.
167 Fixes #8749.
168 * Fix a memory leak that could occur when failing to process an RSA
169 key through some PSA functions due to low memory conditions.
170 * Fixed a regression introduced in 3.6.0 where the CA callback set with
171 mbedtls_ssl_conf_ca_cb() would stop working when connections were
172 upgraded to TLS 1.3. Fixed by adding support for the CA callback with TLS
173 1.3.
174 * Fixed a regression introduced in 3.6.0 where clients that relied on
175 optional/none authentication mode, by calling mbedtls_ssl_conf_authmode()
176 with MBEDTLS_SSL_VERIFY_OPTIONAL or MBEDTLS_SSL_VERIFY_NONE, would stop
177 working when connections were upgraded to TLS 1.3. Fixed by adding
178 support for optional/none with TLS 1.3 as well. Note that the TLS 1.3
179 standard makes server authentication mandatory; users are advised not to
180 use authmode none, and to carefully check the results when using optional
181 mode.
182 * Fixed a regression introduced in 3.6.0 where context-specific certificate
183 verify callbacks, set with mbedtls_ssl_set_verify() as opposed to
184 mbedtls_ssl_conf_verify(), would stop working when connections were
185 upgraded to TLS 1.3. Fixed by adding support for context-specific verify
186 callback in TLS 1.3.
187
188Changes
189 * Warn if mbedtls/check_config.h is included manually, as this can
190 lead to spurious errors. Error if a *adjust*.h header is included
191 manually, as this can lead to silently inconsistent configurations,
192 potentially resulting in buffer overflows.
193 When migrating from Mbed TLS 2.x, if you had a custom config.h that
194 included check_config.h, remove this inclusion from the Mbed TLS 3.x
195 configuration file (renamed to mbedtls_config.h). This change was made
196 in Mbed TLS 3.0, but was not announced in a changelog entry at the time.
David Horstmann9cf929d2024-08-28 20:48:36 +0100197
Minos Galanakis4492dbd2024-03-21 15:52:49 +0000198= Mbed TLS 3.6.0 branch released 2024-03-28
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000199
200API changes
201 * Remove `tls13_` in mbedtls_ssl_tls13_conf_early_data() and
202 mbedtls_ssl_tls13_conf_max_early_data_size() API names. Early data
203 feature may not be TLS 1.3 specific in the future. Fixes #6909.
204
205Default behavior changes
206 * psa_import_key() now only accepts RSA keys in the PSA standard formats.
207 The undocumented ability to import other formats (PKCS#8, SubjectPublicKey,
208 PEM) accepted by the pkparse module has been removed. Applications that
209 need these formats can call mbedtls_pk_parse_{public,}key() followed by
210 mbedtls_pk_import_into_psa().
211
212Requirement changes
213 * Drop support for Visual Studio 2013 and 2015, and Arm Compiler 5.
214
215New deprecations
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000216 * Rename the MBEDTLS_SHA256_USE_A64_CRYPTO_xxx config options to
217 MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_xxx. The old names may still
218 be used, but are deprecated.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000219 * In the PSA API, domain parameters are no longer used for anything.
220 They are deprecated and will be removed in a future version of the
221 library.
222 * mbedtls_ecp_write_key() is deprecated in favor of
223 mbedtls_ecp_write_key_ext().
224
225Removals
226 * In the PSA API, the experimental way to encode the public exponent of
227 an RSA key as a domain parameter is no longer supported. Use
228 psa_generate_key_ext() instead.
229 * Temporary function mbedtls_pk_wrap_as_opaque() is removed. To mimic the
230 same behavior mbedtls_pk_get_psa_attributes() and
231 mbedtls_pk_import_into_psa() can be used to import a PK key into PSA,
232 while mbedtls_pk_setup_opaque() can be used to wrap a PSA key into a opaque
233 PK context.
234
235Features
236 * Added an example program showing how to hash with the PSA API.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000237 * Support Armv8-A Crypto Extension acceleration for SHA-256
238 when compiling for Thumb (T32) or 32-bit Arm (A32).
239 * AES-NI is now supported in Windows builds with clang and clang-cl.
240 Resolves #8372.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000241 * Add new mbedtls_x509_csr_parse_der_with_ext_cb() routine which allows
242 parsing unsupported certificate extensions via user provided callback.
243 * Enable the new option MBEDTLS_BLOCK_CIPHER_NO_DECRYPT to omit
244 the decryption direction of block ciphers (AES, ARIA, Camellia).
245 This affects both the low-level modules and the high-level APIs
246 (the cipher and PSA interfaces). This option is incompatible with modes
247 that use the decryption direction (ECB in PSA, CBC, XTS, KW) and with DES.
248 * Support use of Armv8-A Cryptographic Extensions for hardware acclerated
249 AES when compiling for Thumb (T32) or 32-bit Arm (A32).
250 * If a cipher or AEAD mechanism has a PSA driver, you can now build the
251 library without the corresponding built-in implementation. Generally
252 speaking that requires both the key type and algorithm to be accelerated
253 or they'll both be built in. However, for CCM and GCM the built-in
254 implementation is able to take advantage of a driver that only
255 accelerates the key type (that is, the block cipher primitive). See
256 docs/driver-only-builds.md for full details and current limitations.
257 * The CTR_DRBG module will now use AES from a PSA driver if MBEDTLS_AES_C is
258 disabled. This requires PSA_WANT_ALG_ECB_NO_PADDING in addition to
259 MBEDTLS_PSA_CRYPTO_C and PSA_WANT_KEY_TYPE_AES.
260 * Fewer modules depend on MBEDTLS_CIPHER_C, making it possible to save code
261 size by disabling it in more circumstances. In particular, the CCM and
262 GCM modules no longer depend on MBEDTLS_CIPHER_C. Also,
263 MBEDTLS_PSA_CRYPTO can now be enabled without MBEDTLS_CIPHER_C if all
264 unauthenticated (non-AEAD) ciphers are disabled, or if they're all
265 fully provided by drivers. See docs/driver-only-builds.md for full
266 details and current limitations; in particular, NIST_KW and PKCS5/PKCS12
267 decryption still unconditionally depend on MBEDTLS_CIPHER_C.
268 * Add support for record size limit extension as defined by RFC 8449
269 and configured with MBEDTLS_SSL_RECORD_SIZE_LIMIT.
270 Application data sent and received will be fragmented according to
271 Record size limits negotiated during handshake.
272 * Improve performance of AES-GCM, AES-CTR and CTR-DRBG when
273 hardware accelerated AES is not present (around 13-23% on 64-bit Arm).
274 * Add functions mbedtls_ecc_group_to_psa() and mbedtls_ecc_group_from_psa()
275 to convert between Mbed TLS and PSA curve identifiers.
276 * Add utility functions to manipulate mbedtls_ecp_keypair objects, filling
277 gaps made by making its fields private: mbedtls_ecp_set_public_key(),
278 mbedtls_ecp_write_public_key(), mbedtls_ecp_keypair_calc_public(),
279 mbedtls_ecp_keypair_get_group_id(). Fixes #5017, #5441, #8367, #8652.
280 * Add functions mbedtls_md_psa_alg_from_type() and
281 mbedtls_md_type_from_psa_alg() to convert between mbedtls_md_type_t and
282 psa_algorithm_t.
283 * Add partial platform support for z/OS.
284 * Improve performance for gcc (versions older than 9.3.0) and IAR.
285 * Add functions mbedtls_ecdsa_raw_to_der() and mbedtls_ecdsa_der_to_raw() to
286 convert ECDSA signatures between raw and DER (ASN.1) formats.
287 * Add support for using AES-CBC 128, 192, and 256 bit schemes
288 with PKCS#5 PBES2. Keys encrypted this way can now be parsed by PK parse.
289 * The new function mbedtls_rsa_get_bitlen() returns the length of the modulus
290 in bits, i.e. the key size for an RSA key.
291 * Add pc files for pkg-config, e.g.:
292 pkg-config --cflags --libs (mbedtls|mbedcrypto|mbedx509)
293 * Add getter (mbedtls_ssl_session_get_ticket_creation_time()) to access
294 `mbedtls_ssl_session.ticket_creation_time`.
295 * The new functions mbedtls_pk_get_psa_attributes() and
296 mbedtls_pk_import_into_psa() provide a uniform way to create a PSA
297 key from a PK key.
298 * The benchmark program now reports times for both ephemeral and static
299 ECDH in all ECDH configurations.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000300 * Add support for 8-bit GCM tables for Shoup's algorithm to speedup GCM
301 operations when hardware accelerated AES is not present. Improves
302 performance by around 30% on 64-bit Intel; 125% on Armv7-M.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000303 * The new function psa_generate_key_ext() allows generating an RSA
304 key pair with a custom public exponent.
305 * The new function mbedtls_ecp_write_key_ext() is similar to
306 mbedtls_ecp_write_key(), but can be used without separately calculating
307 the output length.
308 * Add new accessor to expose the private group id member of
309 `mbedtls_ecdh_context` structure.
310 * Add new accessor to expose the `MBEDTLS_PRIVATE(ca_istrue)` member of
311 `mbedtls_x509_crt` structure. This requires setting
312 the MBEDTLS_X509_EXT_BASIC_CONSTRAINTS bit in the certificate's
313 ext_types field.
314 * mbedtls_psa_get_random() is always available as soon as
315 MBEDTLS_PSA_CRYPTO_CLIENT is enabled at build time and psa_crypto_init() is
316 called at runtime. This together with MBEDTLS_PSA_RANDOM_STATE can be
317 used as random number generator function (f_rng) and context (p_rng) in
318 legacy functions.
319 * The new functions mbedtls_pk_copy_from_psa() and
320 mbedtls_pk_copy_public_from_psa() provide ways to set up a PK context
321 with the same content as a PSA key.
322 * Add new accessors to expose the private session-id,
323 session-id length, and ciphersuite-id members of
324 `mbedtls_ssl_session` structure.
325 Add new accessor to expose the ciphersuite-id of
326 `mbedtls_ssl_ciphersuite_t` structure.Design ref: #8529
327 * Mbed TLS now supports the writing and reading of TLS 1.3 early data (see
328 docs/tls13-early-data.md). The support enablement is controlled at build
329 time by the MBEDTLS_SSL_EARLY_DATA configuration option and at runtime by
330 the mbedtls_ssl_conf_early_data() API (by default disabled in both cases).
331 * Add protection for multithreaded access to the PSA keystore and protection
332 for multithreaded access to the the PSA global state, including
333 concurrently calling psa_crypto_init() when MBEDTLS_THREADING_C and
334 MBEDTLS_THREADING_PTHREAD are defined. See
335 docs/architecture/psa-thread-safety/psa-thread-safety.md for more details.
336 Resolves issues #3263 and #7945.
337
338Security
339 * Fix a stack buffer overread (less than 256 bytes) when parsing a TLS 1.3
340 ClientHello in a TLS 1.3 server supporting some PSK key exchange mode. A
341 malicious client could cause information disclosure or a denial of service.
Ronald Cron68613a42024-05-02 15:36:16 +0200342 Fixes CVE-2024-30166.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000343 * Passing buffers that are stored in untrusted memory as arguments
344 to PSA functions is now secure by default.
345 The PSA core now protects against modification of inputs or exposure
346 of intermediate outputs during operations. This is currently implemented
347 by copying buffers.
348 This feature increases code size and memory usage. If buffers passed to
349 PSA functions are owned exclusively by the PSA core for the duration of
350 the function call (i.e. no buffer parameters are in shared memory),
351 copying may be disabled by setting MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS.
352 Note that setting this option will cause input-output buffer overlap to
353 be only partially supported (#3266).
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000354 Fixes CVE-2024-28960.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000355 * Restore the maximum TLS version to be negotiated to the configured one
356 when an SSL context is reset with the mbedtls_ssl_session_reset() API.
357 An attacker was able to prevent an Mbed TLS server from establishing any
358 TLS 1.3 connection potentially resulting in a Denial of Service or forced
359 version downgrade from TLS 1.3 to TLS 1.2. Fixes #8654 reported by hey3e.
360 Fixes CVE-2024-28755.
361 * When negotiating TLS version on server side, do not fall back to the
362 TLS 1.2 implementation of the protocol if it is disabled.
363 - If the TLS 1.2 implementation was disabled at build time, a TLS 1.2
364 client could put the TLS 1.3-only server in an infinite loop processing
365 a TLS 1.2 ClientHello, resulting in a denial of service. Reported by
366 Matthias Mucha and Thomas Blattmann, SICK AG.
367 - If the TLS 1.2 implementation was disabled at runtime, a TLS 1.2 client
368 was able to successfully establish a TLS 1.2 connection with the server.
369 Reported by alluettiv on GitHub.
370 Fixes CVE-2024-28836.
371
372Bugfix
373 * Fix the build with CMake when Everest or P256-m is enabled through
374 a user configuration file or the compiler command line. Fixes #8165.
375 * Fix compilation error in C++ programs when MBEDTLS_ASN1_PARSE_C is
376 disabled.
377 * Fix possible NULL dereference issue in X509 cert_req program if an entry
378 in the san parameter is not separated by a colon.
379 * Fix possible NULL dereference issue in X509 cert_write program if an entry
380 in the san parameter is not separated by a colon.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000381 * Fix an inconsistency between implementations and usages of `__cpuid`,
382 which mainly causes failures when building Windows target using
383 mingw or clang. Fixes #8334 & #8332.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000384 * Fix build failure in conda-forge. Fixes #8422.
385 * Fix parsing of CSRs with critical extensions.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000386 * Switch to milliseconds as the unit for ticket creation and reception time
387 instead of seconds. That avoids rounding errors when computing the age of
388 tickets compared to peer using a millisecond clock (observed with GnuTLS).
389 Fixes #6623.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000390 * Fix TLS server accepting TLS 1.2 handshake while TLS 1.2
391 is disabled at runtime. Fixes #8593.
392 * Remove accidental introduction of RSA signature algorithms
393 in TLS Suite B Profile. Fixes #8221.
394 * Fix unsupported PSA asymmetric encryption and decryption
395 (psa_asymmetric_[en|de]crypt) with opaque keys.
396 Resolves #8461.
397 * On Linux on ARMv8, fix a build error with SHA-256 and SHA-512
398 acceleration detection when the libc headers do not define the
399 corresponding constant. Reported by valord577.
400 * Correct initial capacities for key derivation algorithms:TLS12_PRF,
401 TLS12_PSK_TO_MS, PBKDF2-HMAC, PBKDF2-CMAC
402 * Fix mbedtls_pk_get_bitlen() for RSA keys whose size is not a
403 multiple of 8. Fixes #868.
404 * Avoid segmentation fault caused by releasing not initialized
405 entropy resource in gen_key example. Fixes #8809.
406 * mbedtls_pem_read_buffer() now performs a check on the padding data of
407 decrypted keys and it rejects invalid ones.
408 * Fix mbedtls_pk_sign(), mbedtls_pk_verify(), mbedtls_pk_decrypt() and
409 mbedtls_pk_encrypt() on non-opaque RSA keys to honor the padding mode in
410 the RSA context. Before, if MBEDTLS_USE_PSA_CRYPTO was enabled and the
411 RSA context was configured for PKCS#1 v2.1 (PSS/OAEP), the sign/verify
412 functions performed a PKCS#1 v1.5 signature instead and the
413 encrypt/decrypt functions returned an error. Fixes #8824.
414 * Fix missing bitflags in SSL session serialization headers. Their absence
415 allowed SSL sessions saved in one configuration to be loaded in a
416 different, incompatible configuration.
417 * In TLS 1.3 clients, fix an interoperability problem due to the client
418 generating a new random after a HelloRetryRequest. Fixes #8669.
419 * Fix the restoration of the ALPN when loading serialized connection with
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000420 the mbedtls_ssl_context_load() API.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000421 * Fix NULL pointer dereference in mbedtls_pk_verify_ext() when called using
422 an opaque RSA context and specifying MBEDTLS_PK_RSASSA_PSS as key type.
423 * Fix RSA opaque keys always using PKCS1 v1.5 algorithms instead of the
424 primary algorithm of the wrapped PSA key.
425 * Fully support arbitrary overlap between inputs and outputs of PSA
426 functions. Note that overlap is still only partially supported when
427 MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS is set (#3266).
428
429Changes
430 * Use heap memory to allocate DER encoded public/private key.
431 This reduces stack usage significantly for writing a public/private
432 key to a PEM string.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000433 * PSA_WANT_ALG_CCM and PSA_WANT_ALG_CCM_STAR_NO_TAG are no more synonyms and
434 they are now treated separately. This means that they should be
435 individually enabled in order to enable respective support; also the
436 corresponding MBEDTLS_PSA_ACCEL symbol should be defined in case
437 acceleration is required.
438 * Moved declaration of functions mbedtls_ecc_group_to_psa and
439 mbedtls_ecc_group_of_psa from psa/crypto_extra.h to mbedtls/psa_util.h
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000440 * mbedtls_pk_sign_ext() is now always available, not just when
441 PSA (MBEDTLS_PSA_CRYPTO_C) is enabled.
442 * Extended PSA Crypto configurations options for FFDH by making it possible
443 to select only some of the parameters / groups, with the macros
444 PSA_WANT_DH_RFC7919_XXXX. You now need to defined the corresponding macro
445 for each size you want to support. Also, if you have an FFDH accelerator,
446 you'll need to define the appropriate MBEDTLS_PSA_ACCEL macros to signal
447 support for these domain parameters.
448 * RSA support in PSA no longer auto-enables the pkparse and pkwrite modules,
449 saving code size when those are not otherwise enabled.
450 * mbedtls_mpi_exp_mod and code that uses it, notably RSA and DHM operations,
451 have changed their speed/memory compromise as part of a proactive security
452 improvement. The new default value of MBEDTLS_MPI_WINDOW_SIZE roughly
453 preserves the current speed, at the expense of increasing memory
454 consumption.
455 * Rename directory containing Visual Studio files from visualc/VS2013 to
456 visualc/VS2017.
457 * The TLS 1.3 protocol is now enabled in the default configuration.
458
Dave Rodgman6ba41692024-01-22 15:40:12 +0000459= Mbed TLS 3.5.2 branch released 2024-01-26
460
461Security
462 * Fix a timing side channel in private key RSA operations. This side channel
463 could be sufficient for an attacker to recover the plaintext. A local
464 attacker or a remote attacker who is close to the victim on the network
465 might have precise enough timing measurements to exploit this. It requires
466 the attacker to send a large number of messages for decryption. For
467 details, see "Everlasting ROBOT: the Marvin Attack", Hubert Kario. Reported
468 by Hubert Kario, Red Hat.
469 * Fix a failure to validate input when writing x509 extensions lengths which
470 could result in an integer overflow, causing a zero-length buffer to be
471 allocated to hold the extension. The extension would then be copied into
472 the buffer, causing a heap buffer overflow.
473
Dave Rodgman0a403d42023-11-03 12:28:08 +0000474= Mbed TLS 3.5.1 branch released 2023-11-06
475
476Changes
477 * Mbed TLS is now released under a dual Apache-2.0 OR GPL-2.0-or-later
478 license. Users may choose which license they take the code under.
479
Dave Rodgman76049152023-11-07 12:33:17 +0000480Bugfix
481 * Fix accidental omission of MBEDTLS_TARGET_PREFIX in 3rdparty modules
482 in CMake.
483
Minos Galanakis974388f2023-10-03 22:07:22 +0100484= Mbed TLS 3.5.0 branch released 2023-10-05
Minos Galanakis80a81562023-10-03 22:03:50 +0100485
486API changes
487 * Mbed TLS 3.4 introduced support for omitting the built-in implementation
488 of ECDSA and/or EC J-PAKE when those are provided by a driver. However,
Dave Rodgmanc0e1f3e2023-11-03 11:08:05 +0000489 there was a flaw in the logic checking if the built-in implementation, in
490 that it failed to check if all the relevant curves were supported by the
Minos Galanakis80a81562023-10-03 22:03:50 +0100491 accelerator. As a result, it was possible to declare no curves as
492 accelerated and still have the built-in implementation compiled out.
493 Starting with this release, it is necessary to declare which curves are
494 accelerated (using MBEDTLS_PSA_ACCEL_ECC_xxx macros), or they will be
495 considered not accelerated, and the built-in implementation of the curves
496 and any algorithm possible using them will be included in the build.
497 * Add new millisecond time type `mbedtls_ms_time_t` and `mbedtls_ms_time()`
498 function, needed for TLS 1.3 ticket lifetimes. Alternative implementations
499 can be created using an ALT interface.
500
501Requirement changes
502 * Officially require Python 3.8 now that earlier versions are out of support.
503 * Minimum required Windows version is now Windows Vista, or
504 Windows Server 2008.
505
506New deprecations
507 * PSA_WANT_KEY_TYPE_xxx_KEY_PAIR and
508 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR, where xxx is either ECC or RSA,
509 are now being deprecated in favor of PSA_WANT_KEY_TYPE_xxx_KEY_PAIR_yyy and
510 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR_yyy. Here yyy can be: BASIC,
511 IMPORT, EXPORT, GENERATE, DERIVE. The goal is to have a finer detail about
512 the capabilities of the PSA side for either key.
513 * MBEDTLS_CIPHER_BLKSIZE_MAX is deprecated in favor of
514 MBEDTLS_MAX_BLOCK_LENGTH (if you intended what the name suggests:
515 maximum size of any supported block cipher) or the new name
516 MBEDTLS_CMAC_MAX_BLOCK_SIZE (if you intended the actual semantics:
517 maximum size of a block cipher supported by the CMAC module).
518 * mbedtls_pkcs5_pbes2() and mbedtls_pkcs12_pbe() functions are now
519 deprecated in favor of mbedtls_pkcs5_pbes2_ext() and
520 mbedtls_pkcs12_pbe_ext() as they offer more security by checking
521 for overflow of the output buffer and reporting the actual length
522 of the output.
523
524Features
525 * All modules that use hashes or HMAC can now take advantage of PSA Crypto
526 drivers when MBEDTLS_PSA_CRYPTO_C is enabled and psa_crypto_init() has
527 been called. Previously (in 3.3), this was restricted to a few modules,
528 and only in builds where MBEDTLS_MD_C was disabled; in particular the
529 entropy module was not covered which meant an external RNG had to be
530 provided - these limitations are lifted in this version. A new set of
531 feature macros, MBEDTLS_MD_CAN_xxx, has been introduced that can be used
532 to check for availability of hash algorithms, regardless of whether
533 they're provided by a built-in implementation, a driver or both. See
534 docs/driver-only-builds.md.
535 * When a PSA driver for ECDH is present, it is now possible to disable
536 MBEDTLS_ECDH_C in the build in order to save code size. For TLS 1.2
537 key exchanges based on ECDH(E) to work, this requires
538 MBEDTLS_USE_PSA_CRYPTO. Restartable/interruptible ECDHE operations in
539 TLS 1.2 (ECDHE-ECDSA key exchange) are not supported in those builds yet,
540 as PSA does not have an API for restartable ECDH yet.
541 * When all of ECDH, ECDSA and EC J-PAKE are either disabled or provided by
542 a driver, it is possible to disable MBEDTLS_ECP_C (and MBEDTLS_BIGNUM_C
543 if not required by another module) and still get support for ECC keys and
544 algorithms in PSA, with some limitations. See docs/driver-only-builds.txt
545 for details.
546 * Add parsing of directoryName subtype for subjectAltName extension in
547 x509 certificates.
548 * Add support for server-side TLS version negotiation. If both TLS 1.2 and
549 TLS 1.3 protocols are enabled, the TLS server now selects TLS 1.2 or
550 TLS 1.3 depending on the capabilities and preferences of TLS clients.
551 Fixes #6867.
552 * X.509 hostname verification now supports IPAddress Subject Alternate Names.
553 * Add support for reading and writing X25519 and X448
554 public and private keys in RFC 8410 format using the existing PK APIs.
555 * When parsing X.509 certificates, support the extensions
556 SignatureKeyIdentifier and AuthorityKeyIdentifier.
557 * Don't include the PSA dispatch functions for PAKEs (psa_pake_setup() etc)
558 if no PAKE algorithms are requested
559 * Add support for the FFDH algorithm and DH key types in PSA, with
560 parameters from RFC 7919. This includes a built-in implementation based
561 on MBEDTLS_BIGNUM_C, and a driver dispatch layer enabling alternative
562 implementations of FFDH through the driver entry points.
563 * It is now possible to generate certificates with SubjectAltNames.
564 Currently supported subtypes: DnsName, UniformResourceIdentifier,
565 IP address, OtherName, and DirectoryName, as defined in RFC 5280.
566 See mbedtls_x509write_crt_set_subject_alternative_name for
567 more information.
568 * X.509 hostname verification now partially supports URI Subject Alternate
569 Names. Only exact matching, without any normalization procedures
570 described in 7.4 of RFC5280, will result in a positive URI verification.
571 * Add function mbedtls_oid_from_numeric_string() to parse an OID from a
572 string to a DER-encoded mbedtls_asn1_buf.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100573 * Add SHA-3 family hash functions.
Minos Galanakis80a81562023-10-03 22:03:50 +0100574 * Add support to restrict AES to 128-bit keys in order to save code size.
575 A new configuration option, MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH, can be
576 used to enable this feature.
577 * AES performance improvements. Uplift varies by platform,
578 toolchain, optimisation flags and mode.
579 Aarch64, gcc -Os and CCM, GCM and XTS benefit the most.
580 On Aarch64, uplift is typically around 20 - 110%.
581 When compiling with gcc -Os on Aarch64, AES-XTS improves
582 by 4.5x.
583 * Add support for PBKDF2-HMAC through the PSA API.
584 * New symbols PSA_WANT_KEY_TYPE_xxx_KEY_PAIR_yyy and
585 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR_yyy (where xxx is either ECC, RSA
586 or DH) were introduced in order to have finer accuracy in defining the
587 PSA capabilities for each key. These capabilities, named yyy above, can be
588 any of: BASIC, IMPORT, EXPORT, GENERATE, DERIVE.
589 - DERIVE is only available for ECC keys, not for RSA or DH ones.
590 - implementations are free to enable more than what it was strictly
591 requested. For example BASIC internally enables IMPORT and EXPORT
592 (useful for testing purposes), but this might change in the future.
593 * Add support for FFDH key exchange in TLS 1.3.
594 This is automatically enabled as soon as PSA_WANT_ALG_FFDH
595 and the ephemeral or psk-ephemeral key exchange mode are enabled.
596 By default, all groups are offered; the list of groups can be
597 configured using the existing API function mbedtls_ssl_conf_groups().
598 * Improve mbedtls_x509_time performance and reduce memory use.
599 * Reduce syscalls to time() during certificate verification.
600 * Allow MBEDTLS_CONFIG_FILE and MBEDTLS_USER_CONFIG_FILE to be set by
601 setting the CMake variable of the same name at configuration time.
602 * Add getter (mbedtls_ssl_cache_get_timeout()) to access
603 `mbedtls_ssl_cache_context.timeout`.
604 * Add getter (mbedtls_ssl_get_hostname()) to access
605 `mbedtls_ssl_context.hostname`.
606 * Add getter (mbedtls_ssl_conf_get_endpoint()) to access
607 `mbedtls_ssl_config.endpoint`.
608 * Support for "opaque" (PSA-held) ECC keys in the PK module has been
609 extended: it is now possible to use mbedtls_pk_write_key_der(),
610 mbedtls_pk_write_key_pem(), mbedtls_pk_check_pair(), and
611 mbedtls_pk_verify() with opaque ECC keys (provided the PSA attributes
612 allow it).
613 * The documentation of mbedtls_ecp_group now describes the optimized
614 representation of A for some curves. Fixes #8045.
615 * Add a possibility to generate CSR's with RCF822 and directoryName subtype
616 of subjectAltName extension in x509 certificates.
617 * Add support for PBKDF2-CMAC through the PSA API.
618 * New configuration option MBEDTLS_AES_USE_HARDWARE_ONLY introduced. When
619 using CPU-accelerated AES (e.g., Arm Crypto Extensions), this option
620 disables the plain C implementation and the run-time detection for the
621 CPU feature, which reduces code size and avoids the vulnerability of the
622 plain C implementation.
623 * Accept arbitrary AttributeType and AttributeValue in certificate
624 Distinguished Names using RFC 4514 syntax.
625 * Applications using ECC over secp256r1 through the PSA API can use a
626 new implementation with a much smaller footprint, but some minor
627 usage restrictions. See the documentation of the new configuration
628 option MBEDTLS_PSA_P256M_DRIVER_ENABLED for details.
629
630Security
631 * Fix a case where potentially sensitive information held in memory would not
632 be completely zeroized during TLS 1.2 handshake, in both server and client
633 configurations.
634 * In configurations with ARIA or Camellia but not AES, the value of
635 MBEDTLS_CIPHER_BLKSIZE_MAX was 8, rather than 16 as the name might
636 suggest. This did not affect any library code, because this macro was
637 only used in relation with CMAC which does not support these ciphers.
638 This may affect application code that uses this macro.
639 * Developers using mbedtls_pkcs5_pbes2() or mbedtls_pkcs12_pbe() should
640 review the size of the output buffer passed to this function, and note
641 that the output after decryption may include CBC padding. Consider moving
642 to the new functions mbedtls_pkcs5_pbes2_ext() or mbedtls_pkcs12_pbe_ext()
643 which checks for overflow of the output buffer and reports the actual
644 length of the output.
645 * Improve padding calculations in CBC decryption, NIST key unwrapping and
646 RSA OAEP decryption. With the previous implementation, some compilers
647 (notably recent versions of Clang and IAR) could produce non-constant
648 time code, which could allow a padding oracle attack if the attacker
649 has access to precise timing measurements.
650 * Updates to constant-time C code so that compilers are less likely to use
651 conditional instructions, which can have an observable difference in
652 timing. (Clang has been seen to do this.) Also introduce assembly
653 implementations for 32- and 64-bit Arm and for x86 and x86-64, which are
654 guaranteed not to use conditional instructions.
655 * Fix definition of MBEDTLS_MD_MAX_BLOCK_SIZE, which was too
656 small when MBEDTLS_SHA384_C was defined and MBEDTLS_SHA512_C was
657 undefined. Mbed TLS itself was unaffected by this, but user code
658 which used MBEDTLS_MD_MAX_BLOCK_SIZE could be affected. The only
659 release containing this bug was Mbed TLS 3.4.0.
660 * Fix a buffer overread when parsing short TLS application data records in
661 null-cipher cipher suites. Credit to OSS-Fuzz.
662 * Fix a remotely exploitable heap buffer overflow in TLS handshake parsing.
663 In TLS 1.3, all configurations are affected except PSK-only ones, and
664 both clients and servers are affected.
665 In TLS 1.2, the affected configurations are those with
666 MBEDTLS_USE_PSA_CRYPTO and ECDH enabled but DHM and RSA disabled,
667 and only servers are affected, not clients.
668 Credit to OSS-Fuzz.
669
670Bugfix
671 * Fix proper sizing for PSA_EXPORT_[KEY_PAIR/PUBLIC_KEY]_MAX_SIZE and
672 PSA_SIGNATURE_MAX_SIZE buffers when at least one accelerated EC is bigger
673 than all built-in ones and RSA is disabled.
674 Resolves #6622.
675 * Add missing md.h includes to some of the external programs from
676 the programs directory. Without this, even though the configuration
677 was sufficient for a particular program to work, it would only print
678 a message that one of the required defines is missing.
679 * Fix declaration of mbedtls_ecdsa_sign_det_restartable() function
680 in the ecdsa.h header file. There was a build warning when the
681 configuration macro MBEDTLS_ECDSA_SIGN_ALT was defined.
682 Resolves #7407.
683 * Fix an error when MBEDTLS_ECDSA_SIGN_ALT is defined but not
684 MBEDTLS_ECDSA_VERIFY_ALT, causing ecdsa verify to fail. Fixes #7498.
685 * Fix missing PSA initialization in sample programs when
686 MBEDTLS_USE_PSA_CRYPTO is enabled.
687 * Fix the J-PAKE driver interface for user and peer to accept any values
688 (previously accepted values were limited to "client" or "server").
689 * Fix clang and armclang compilation error when targeting certain Arm
690 M-class CPUs (Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M23,
691 SecurCore SC000). Fixes #1077.
692 * Fix "unterminated '#pragma clang attribute push'" in sha256/sha512.c when
693 built with MBEDTLS_SHAxxx_USE_A64_CRYPTO_IF_PRESENT but don't have a
694 way to detect the crypto extensions required. A warning is still issued.
695 * Fixed an issue that caused compile errors when using CMake and the IAR
696 toolchain.
697 * Fix very high stack usage in SSL debug code. Reported by Maximilian
698 Gerhardt in #7804.
699 * Fix a compilation failure in the constant_time module when
700 building for arm64_32 (e.g., for watchos). Reported by Paulo
701 Coutinho in #7787.
702 * Fix crypt_and_hash decryption fail when used with a stream cipher
703 mode of operation due to the input not being multiple of block size.
704 Resolves #7417.
705 * Fix a bug in which mbedtls_x509_string_to_names() would return success
706 when given a invalid name string if it did not contain '=' or ','.
707 * Fix compilation warnings in aes.c, which prevented the
708 example TF-M configuration in configs/ from building cleanly:
709 tfm_mbedcrypto_config_profile_medium.h with
710 crypto_config_profile_medium.h.
711 * In TLS 1.3, fix handshake failure when a client in its ClientHello
712 proposes an handshake based on PSK only key exchange mode or at least
713 one of the key exchange modes using ephemeral keys to a server that
714 supports only the PSK key exchange mode.
715 * Fix CCM* with no tag being not supported in a build with CCM as the only
716 symmetric encryption algorithm and the PSA configuration enabled.
717 * Fix the build with MBEDTLS_PSA_INJECT_ENTROPY. Fixes #7516.
718 * Fix a compilation error on some platforms when including mbedtls/ssl.h
719 with all TLS support disabled. Fixes #6628.
720 * Fix x509 certificate generation to conform to RFC 5480 / RFC 5758 when
721 using ECC key. The certificate was rejected by some crypto frameworks.
722 Fixes #2924.
723 * Fix a potential corruption of the passed-in IV when mbedtls_aes_crypt_cbc()
724 is called with zero length and padlock is not enabled.
725 * Fix compile failure due to empty enum in cipher_wrap.c, when building
726 with a very minimal configuration. Fixes #7625.
727 * Fix some cases where mbedtls_mpi_mod_exp, RSA key construction or ECDSA
728 signature can silently return an incorrect result in low memory conditions.
729 * Don't try to include MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE when
730 MBEDTLS_PSA_CRYPTO_CONFIG is disabled.
731 * Fix IAR compiler warnings.
732 * Fix an issue when parsing an otherName subject alternative name into a
733 mbedtls_x509_san_other_name struct. The type-id of the otherName was not
734 copied to the struct. This meant that the struct had incomplete
735 information about the otherName SAN and contained uninitialized memory.
736 * Fix the detection of HardwareModuleName otherName SANs. These were being
737 detected by comparing the wrong field and the check was erroneously
738 inverted.
739 * Fix a build error in some configurations with MBEDTLS_PSA_CRYPTO_CONFIG
740 enabled, where some low-level modules required by requested PSA crypto
741 features were not getting automatically enabled. Fixes #7420.
742 * Fix undefined symbols in some builds using TLS 1.3 with a custom
743 configuration file.
744 * Fix log level for the got supported group message. Fixes #6765
745 * Functions in the ssl_cache module now return a negative MBEDTLS_ERR_xxx
746 error code on failure. Before, they returned 1 to indicate failure in
747 some cases involving a missing entry or a full cache.
748 * mbedtls_pk_parse_key() now rejects trailing garbage in encrypted keys.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100749 * Fix the build with CMake when Everest or P256-m is enabled through
750 a user configuration file or the compiler command line. Fixes #8165.
Minos Galanakis80a81562023-10-03 22:03:50 +0100751
752Changes
753 * Enable Arm / Thumb bignum assembly for most Arm platforms when
754 compiling with gcc, clang or armclang and -O0.
755 * Enforce minimum RSA key size when generating a key
756 to avoid accidental misuse.
757 * Use heap memory to allocate DER encoded RSA private key.
758 This reduces stack usage significantly for RSA signature
759 operations when MBEDTLS_PSA_CRYPTO_C is defined.
760 * Update Windows code to use BCryptGenRandom and wcslen, and
761 ensure that conversions between size_t, ULONG, and int are
762 always done safely. Original contribution by Kevin Kane #635, #730
763 followed by Simon Butcher #1453.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100764 * Users integrating their own PSA drivers should be aware that
Minos Galanakis80a81562023-10-03 22:03:50 +0100765 the file library/psa_crypto_driver_wrappers.c has been renamed
766 to psa_crypto_driver_wrappers_no_static.c.
767 * When using CBC with the cipher module, the requirement to call
768 mbedtls_cipher_set_padding_mode() is now enforced. Previously, omitting
769 this call accidentally applied a default padding mode chosen at compile
770 time.
771
Gilles Peskine4a415fd2023-08-02 12:51:44 +0200772= Mbed TLS 3.4.1 branch released 2023-08-04
Gilles Peskine82c159f2023-08-02 12:51:01 +0200773
774Bugfix
775 * Fix builds on Windows with clang
776
777Changes
778 * Update test data to avoid failures of unit tests after 2023-08-07.
779
Paul Elliottdbe435c2023-03-23 10:43:15 +0000780= Mbed TLS 3.4.0 branch released 2023-03-28
781
782Default behavior changes
783 * The default priority order of TLS 1.3 cipher suites has been modified to
784 follow the same rules as the TLS 1.2 cipher suites (see
785 ssl_ciphersuites.c). The preferred cipher suite is now
786 TLS_CHACHA20_POLY1305_SHA256.
787
788New deprecations
789 * mbedtls_x509write_crt_set_serial() is now being deprecated in favor of
790 mbedtls_x509write_crt_set_serial_raw(). The goal here is to remove any
791 direct dependency of X509 on BIGNUM_C.
792 * PSA to mbedtls error translation is now unified in psa_util.h,
793 deprecating mbedtls_md_error_from_psa. Each file that performs error
794 translation should define its own version of PSA_TO_MBEDTLS_ERR,
795 optionally providing file-specific error pairs. Please see psa_util.h for
796 more details.
797
798Features
799 * Added partial support for parsing the PKCS #7 Cryptographic Message
800 Syntax, as defined in RFC 2315. Currently, support is limited to the
801 following:
802 - Only the signed-data content type, version 1 is supported.
803 - Only DER encoding is supported.
804 - Only a single digest algorithm per message is supported.
805 - Certificates must be in X.509 format. A message must have either 0
806 or 1 certificates.
807 - There is no support for certificate revocation lists.
808 - The authenticated and unauthenticated attribute fields of SignerInfo
809 must be empty.
810 Many thanks to Daniel Axtens, Nayna Jain, and Nick Child from IBM for
811 contributing this feature, and to Demi-Marie Obenour for contributing
812 various improvements, tests and bug fixes.
813 * General performance improvements by accessing multiple bytes at a time.
814 Fixes #1666.
815 * Improvements to use of unaligned and byte-swapped memory, reducing code
816 size and improving performance (depending on compiler and target
817 architecture).
818 * Add support for reading points in compressed format
819 (MBEDTLS_ECP_PF_COMPRESSED) with mbedtls_ecp_point_read_binary()
820 (and callers) for Short Weierstrass curves with prime p where p = 3 mod 4
821 (all mbedtls MBEDTLS_ECP_DP_SECP* and MBEDTLS_ECP_DP_BP* curves
822 except MBEDTLS_ECP_DP_SECP224R1 and MBEDTLS_ECP_DP_SECP224K1)
823 * SHA224_C/SHA384_C are now independent from SHA384_C/SHA512_C respectively.
824 This helps in saving code size when some of the above hashes are not
825 required.
826 * Add parsing of V3 extensions (key usage, Netscape cert-type,
827 Subject Alternative Names) in x509 Certificate Sign Requests.
828 * Use HOSTCC (if it is set) when compiling C code during generation of the
829 configuration-independent files. This allows them to be generated when
830 CC is set for cross compilation.
831 * Add parsing of uniformResourceIdentifier subtype for subjectAltName
832 extension in x509 certificates.
833 * Add an interruptible version of sign and verify hash to the PSA interface,
834 backed by internal library support for ECDSA signing and verification.
835 * Add parsing of rfc822Name subtype for subjectAltName
836 extension in x509 certificates.
837 * The configuration macros MBEDTLS_PSA_CRYPTO_PLATFORM_FILE and
838 MBEDTLS_PSA_CRYPTO_STRUCT_FILE specify alternative locations for
839 the headers "psa/crypto_platform.h" and "psa/crypto_struct.h".
840 * When a PSA driver for ECDSA is present, it is now possible to disable
841 MBEDTLS_ECDSA_C in the build in order to save code size. For PK, X.509
842 and TLS to fully work, this requires MBEDTLS_USE_PSA_CRYPTO to be enabled.
843 Restartable/interruptible ECDSA operations in PK, X.509 and TLS are not
844 supported in those builds yet, as driver support for interruptible ECDSA
845 operations is not present yet.
846 * Add a driver dispatch layer for EC J-PAKE, enabling alternative
847 implementations of EC J-PAKE through the driver entry points.
848 * Add new API mbedtls_ssl_cache_remove for cache entry removal by
849 its session id.
850 * Add support to include the SubjectAltName extension to a CSR.
851 * Add support for AES with the Armv8-A Cryptographic Extension on
852 64-bit Arm. A new configuration option, MBEDTLS_AESCE_C, can
853 be used to enable this feature. Run-time detection is supported
854 under Linux only.
855 * When a PSA driver for EC J-PAKE is present, it is now possible to disable
856 MBEDTLS_ECJPAKE_C in the build in order to save code size. For the
857 corresponding TLS 1.2 key exchange to work, MBEDTLS_USE_PSA_CRYPTO needs
858 to be enabled.
859 * Add functions mbedtls_rsa_get_padding_mode() and mbedtls_rsa_get_md_alg()
860 to read non-public fields for padding mode and hash id from
861 an mbedtls_rsa_context, as requested in #6917.
862 * AES-NI is now supported with Visual Studio.
863 * AES-NI is now supported in 32-bit builds, or when MBEDTLS_HAVE_ASM
864 is disabled, when compiling with GCC or Clang or a compatible compiler
865 for a target CPU that supports the requisite instructions (for example
866 gcc -m32 -msse2 -maes -mpclmul). (Generic x86 builds with GCC-like
867 compilers still require MBEDTLS_HAVE_ASM and a 64-bit target.)
868 * It is now possible to use a PSA-held (opaque) password with the TLS 1.2
869 ECJPAKE key exchange, using the new API function
870 mbedtls_ssl_set_hs_ecjpake_password_opaque().
871
872Security
873 * Use platform-provided secure zeroization function where possible, such as
874 explicit_bzero().
875 * Zeroize SSL cache entries when they are freed.
876 * Fix a potential heap buffer overread in TLS 1.3 client-side when
877 MBEDTLS_DEBUG_C is enabled. This may result in an application crash.
878 * Add support for AES with the Armv8-A Cryptographic Extension on 64-bit
879 Arm, so that these systems are no longer vulnerable to timing side-channel
880 attacks. This is configured by MBEDTLS_AESCE_C, which is on by default.
881 Reported by Demi Marie Obenour.
882 * MBEDTLS_AESNI_C, which is enabled by default, was silently ignored on
883 builds that couldn't compile the GCC-style assembly implementation
884 (most notably builds with Visual Studio), leaving them vulnerable to
885 timing side-channel attacks. There is now an intrinsics-based AES-NI
886 implementation as a fallback for when the assembly one cannot be used.
887
888Bugfix
889 * Fix possible integer overflow in mbedtls_timing_hardclock(), which
890 could cause a crash in programs/test/benchmark.
891 * Fix IAR compiler warnings. Fixes #6924.
892 * Fix a bug in the build where directory names containing spaces were
893 causing generate_errors.pl to error out resulting in a build failure.
894 Fixes issue #6879.
895 * In TLS 1.3, when using a ticket for session resumption, tweak its age
896 calculation on the client side. It prevents a server with more accurate
897 ticket timestamps (typically timestamps in milliseconds) compared to the
898 Mbed TLS ticket timestamps (in seconds) to compute a ticket age smaller
899 than the age computed and transmitted by the client and thus potentially
900 reject the ticket. Fix #6623.
901 * Fix compile error where MBEDTLS_RSA_C and MBEDTLS_X509_CRT_WRITE_C are
902 defined, but MBEDTLS_PK_RSA_ALT_SUPPORT is not defined. Fixes #3174.
903 * List PSA_WANT_ALG_CCM_STAR_NO_TAG in psa/crypto_config.h so that it can
904 be toggled with config.py.
905 * The key derivation algorithm PSA_ALG_TLS12_ECJPAKE_TO_PMS cannot be
906 used on a shared secret from a key agreement since its input must be
907 an ECC public key. Reject this properly.
908 * mbedtls_x509write_crt_set_serial() now explicitly rejects serial numbers
909 whose binary representation is longer than 20 bytes. This was already
910 forbidden by the standard (RFC5280 - section 4.1.2.2) and now it's being
911 enforced also at code level.
912 * Fix potential undefined behavior in mbedtls_mpi_sub_abs(). Reported by
913 Pascal Cuoq using TrustInSoft Analyzer in #6701; observed independently by
914 Aaron Ucko under Valgrind.
915 * Fix behavior of certain sample programs which could, when run with no
916 arguments, access uninitialized memory in some cases. Fixes #6700 (which
917 was found by TrustInSoft Analyzer during REDOCS'22) and #1120.
918 * Fix parsing of X.509 SubjectAlternativeName extension. Previously,
919 malformed alternative name components were not caught during initial
920 certificate parsing, but only on subsequent calls to
921 mbedtls_x509_parse_subject_alt_name(). Fixes #2838.
922 * Make the fields of mbedtls_pk_rsassa_pss_options public. This makes it
923 possible to verify RSA PSS signatures with the pk module, which was
924 inadvertently broken since Mbed TLS 3.0.
925 * Fix bug in conversion from OID to string in
926 mbedtls_oid_get_numeric_string(). OIDs such as 2.40.0.25 are now printed
927 correctly.
928 * Reject OIDs with overlong-encoded subidentifiers when converting
929 them to a string.
930 * Reject OIDs with subidentifier values exceeding UINT_MAX. Such
931 subidentifiers can be valid, but Mbed TLS cannot currently handle them.
932 * Reject OIDs that have unterminated subidentifiers, or (equivalently)
933 have the most-significant bit set in their last byte.
934 * Silence warnings from clang -Wdocumentation about empty \retval
935 descriptions, which started appearing with Clang 15. Fixes #6960.
936 * Fix the handling of renegotiation attempts in TLS 1.3. They are now
937 systematically rejected.
938 * Fix an unused-variable warning in TLS 1.3-only builds if
939 MBEDTLS_SSL_RENEGOTIATION was enabled. Fixes #6200.
940 * Fix undefined behavior in mbedtls_ssl_read() and mbedtls_ssl_write() if
941 len argument is 0 and buffer is NULL.
942 * Allow setting user and peer identifiers for EC J-PAKE operation
943 instead of role in PAKE PSA Crypto API as described in the specification.
944 This is a partial fix that allows only "client" and "server" identifiers.
945 * Fix a compilation error when PSA Crypto is built with support for
946 TLS12_PRF but not TLS12_PSK_TO_MS. Reported by joerchan in #7125.
947 * In the TLS 1.3 server, select the preferred client cipher suite, not the
948 least preferred. The selection error was introduced in Mbed TLS 3.3.0.
949 * Fix TLS 1.3 session resumption when the established pre-shared key is
950 384 bits long. That is the length of pre-shared keys created under a
951 session where the cipher suite is TLS_AES_256_GCM_SHA384.
952 * Fix an issue when compiling with MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
953 enabled, which required specifying compiler flags enabling SHA3 Crypto
954 Extensions, where some compilers would emit EOR3 instructions in other
955 modules, which would then fail if run on a CPU without the SHA3
956 extensions. Fixes #5758.
957
958Changes
959 * Install the .cmake files into CMAKE_INSTALL_LIBDIR/cmake/MbedTLS,
960 typically /usr/lib/cmake/MbedTLS.
961 * Mixed-endian systems are explicitly not supported any more.
962 * When MBEDTLS_USE_PSA_CRYPTO and MBEDTLS_ECDSA_DETERMINISTIC are both
963 defined, mbedtls_pk_sign() now use deterministic ECDSA for ECDSA
964 signatures. This aligns the behaviour with MBEDTLS_USE_PSA_CRYPTO to
965 the behaviour without it, where deterministic ECDSA was already used.
966 * Visual Studio: Rename the directory containing Visual Studio files from
967 visualc/VS2010 to visualc/VS2013 as we do not support building with versions
968 older than 2013. Update the solution file to specify VS2013 as a minimum.
969 * programs/x509/cert_write:
970 - now it accepts the serial number in 2 different formats: decimal and
971 hex. They cannot be used simultaneously
972 - "serial" is used for the decimal format and it's limted in size to
973 unsigned long long int
974 - "serial_hex" is used for the hex format; max length here is
975 MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN*2
976 * The C code follows a new coding style. This is transparent for users but
977 affects contributors and maintainers of local patches. For more
978 information, see
979 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/rewrite-branch-for-coding-style/
980 * Changed the default MBEDTLS_ECP_WINDOW_SIZE from 6 to 2.
981 As tested in issue 6790, the correlation between this define and
982 RSA decryption performance has changed lately due to security fixes.
983 To fix the performance degradation when using default values the
984 window was reduced from 6 to 2, a value that gives the best or close
985 to best results when tested on Cortex-M4 and Intel i7.
986 * When enabling MBEDTLS_SHA256_USE_A64_CRYPTO_* or
987 MBEDTLS_SHA512_USE_A64_CRYPTO_*, it is no longer necessary to specify
988 compiler target flags on the command line; the library now sets target
989 options within the appropriate modules.
990
Dave Rodgman69591e92022-12-08 14:59:54 +0000991= Mbed TLS 3.3.0 branch released 2022-12-14
992
Dave Rodgman69591e92022-12-08 14:59:54 +0000993Default behavior changes
994 * Previously the macro MBEDTLS_SSL_DTLS_CONNECTION_ID implemented version 05
995 of the IETF draft, and was marked experimental and disabled by default.
996 It is now no longer experimental, and implements the final version from
997 RFC 9146, which is not interoperable with the draft-05 version.
998 If you need to communicate with peers that use earlier versions of
999 Mbed TLS, then you need to define MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT
1000 to 1, but then you won't be able to communicate with peers that use the
1001 standard (non-draft) version.
1002 If you need to interoperate with both classes of peers with the
1003 same build of Mbed TLS, please let us know about your situation on the
1004 mailing list or GitHub.
1005
1006Requirement changes
1007 * When building with PSA drivers using generate_driver_wrappers.py, or
1008 when building the library from the development branch rather than
1009 from a release, the Python module jsonschema is now necessary, in
1010 addition to jinja2. The official list of required Python modules is
1011 maintained in scripts/basic.requirements.txt and may change again
1012 in the future.
1013
1014New deprecations
1015 * Deprecate mbedtls_asn1_free_named_data().
1016 Use mbedtls_asn1_free_named_data_list()
1017 or mbedtls_asn1_free_named_data_list_shallow().
1018
1019Features
1020 * Support rsa_pss_rsae_* signature algorithms in TLS 1.2.
1021 * make: enable building unversioned shared library, with e.g.:
1022 "SHARED=1 SOEXT_TLS=so SOEXT_X509=so SOEXT_CRYPTO=so make lib"
1023 resulting in library names like "libmbedtls.so" rather than
1024 "libmbedcrypto.so.11".
1025 * Expose the EC J-PAKE functionality through the Draft PSA PAKE Crypto API.
1026 Only the ECC primitive with secp256r1 curve and SHA-256 hash algorithm
1027 are supported in this implementation.
1028 * Some modules can now use PSA drivers for hashes, including with no
1029 built-in implementation present, but only in some configurations.
1030 - RSA OAEP and PSS (PKCS#1 v2.1), PKCS5, PKCS12 and EC J-PAKE now use
1031 hashes from PSA when (and only when) MBEDTLS_MD_C is disabled.
1032 - PEM parsing of encrypted files now uses MD-5 from PSA when (and only
1033 when) MBEDTLS_MD5_C is disabled.
1034 See the documentation of the corresponding macros in mbedtls_config.h for
1035 details.
1036 Note that some modules are not able to use hashes from PSA yet, including
1037 the entropy module. As a consequence, for now the only way to build with
1038 all hashes only provided by drivers (no built-in hash) is to use
1039 MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG.
1040 * When MBEDTLS_USE_PSA_CRYPTO is enabled, X.509, TLS 1.2 and TLS 1.3 now
1041 properly negotiate/accept hashes based on their availability in PSA.
1042 As a consequence, they now work in configurations where the built-in
1043 implementations of (some) hashes are excluded and those hashes are only
1044 provided by PSA drivers. (See previous entry for limitation on RSA-PSS
1045 though: that module only use hashes from PSA when MBEDTLS_MD_C is off).
1046 * Add support for opaque keys as the private keys associated to certificates
1047 for authentication in TLS 1.3.
1048 * Add the LMS post-quantum-safe stateful-hash asymmetric signature scheme.
1049 Signature verification is production-ready, but generation is for testing
1050 purposes only. This currently only supports one parameter set
1051 (LMS_SHA256_M32_H10), meaning that each private key can be used to sign
1052 1024 messages. As such, it is not intended for use in TLS, but instead
1053 for verification of assets transmitted over an insecure channel,
1054 particularly firmware images.
1055 * Add the LM-OTS post-quantum-safe one-time signature scheme, which is
1056 required for LMS. This can be used independently, but each key can only
1057 be used to sign one message so is impractical for most circumstances.
1058 * Mbed TLS now supports TLS 1.3 key establishment via pre-shared keys.
1059 The pre-shared keys can be provisioned externally or via the ticket
1060 mechanism (session resumption).
1061 The ticket mechanism is supported when the configuration option
1062 MBEDTLS_SSL_SESSION_TICKETS is enabled.
1063 New options MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_xxx_ENABLED
1064 control the support for the three possible TLS 1.3 key exchange modes.
1065 * cert_write: support for setting extended key usage attributes. A
1066 corresponding new public API call has been added in the library,
1067 mbedtls_x509write_crt_set_ext_key_usage().
1068 * cert_write: support for writing certificate files in either PEM
1069 or DER format.
1070 * The PSA driver wrapper generator generate_driver_wrappers.py now
1071 supports a subset of the driver description language, including
1072 the following entry points: import_key, export_key, export_public_key,
1073 get_builtin_key, copy_key.
1074 * The new functions mbedtls_asn1_free_named_data_list() and
1075 mbedtls_asn1_free_named_data_list_shallow() simplify the management
1076 of memory in named data lists in X.509 structures.
1077 * The TLS 1.2 EC J-PAKE key exchange can now use the PSA Crypto API.
1078 Additional PSA key slots will be allocated in the process of such key
1079 exchange for builds that enable MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED and
1080 MBEDTLS_USE_PSA_CRYPTO.
1081 * Add support for DTLS Connection ID as defined by RFC 9146, controlled by
1082 MBEDTLS_SSL_DTLS_CONNECTION_ID (enabled by default) and configured with
1083 mbedtls_ssl_set_cid().
1084 * Add a driver dispatch layer for raw key agreement, enabling alternative
1085 implementations of raw key agreement through the key_agreement driver
1086 entry point. This entry point is specified in the proposed PSA driver
1087 interface, but had not yet been implemented.
Dave Rodgman552e1072022-12-14 17:01:51 +00001088 * Add an ad-hoc key derivation function handling EC J-PAKE to PMS
1089 calculation that can be used to derive the session secret in TLS 1.2,
1090 as described in draft-cragie-tls-ecjpake-01. This can be achieved by
1091 using PSA_ALG_TLS12_ECJPAKE_TO_PMS as the key derivation algorithm.
Dave Rodgman69591e92022-12-08 14:59:54 +00001092
1093Security
1094 * Fix potential heap buffer overread and overwrite in DTLS if
1095 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
1096 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001097 * Fix an issue where an adversary with access to precise enough information
1098 about memory accesses (typically, an untrusted operating system attacking
1099 a secure enclave) could recover an RSA private key after observing the
1100 victim performing a single private-key operation if the window size used
1101 for the exponentiation was 3 or smaller. Found and reported by Zili KOU,
Dave Rodgman69591e92022-12-08 14:59:54 +00001102 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
1103 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
1104 and Test in Europe 2023.
1105
1106Bugfix
1107 * Refactor mbedtls_aes_context to support shallow-copying. Fixes #2147.
1108 * Fix an issue with in-tree CMake builds in releases with GEN_FILES
1109 turned off: if a shipped file was missing from the working directory,
1110 it could be turned into a symbolic link to itself.
1111 * Fix a long-standing build failure when building x86 PIC code with old
1112 gcc (4.x). The code will be slower, but will compile. We do however
1113 recommend upgrading to a more recent compiler instead. Fixes #1910.
1114 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
1115 Contributed by Kazuyuki Kimura to fix #2020.
1116 * Use double quotes to include private header file psa_crypto_cipher.h.
1117 Fixes 'file not found with <angled> include' error
1118 when building with Xcode.
1119 * Fix handling of broken symlinks when loading certificates using
1120 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
1121 broken link is encountered, skip the broken link and continue parsing
1122 other certificate files. Contributed by Eduardo Silva in #2602.
1123 * Fix an interoperability failure between an Mbed TLS client with both
1124 TLS 1.2 and TLS 1.3 support, and a TLS 1.2 server that supports
1125 rsa_pss_rsae_* signature algorithms. This failed because Mbed TLS
1126 advertised support for PSS in both TLS 1.2 and 1.3, but only
1127 actually supported PSS in TLS 1.3.
1128 * Fix a compilation error when using CMake with an IAR toolchain.
1129 Fixes #5964.
1130 * Fix a build error due to a missing prototype warning when
1131 MBEDTLS_DEPRECATED_REMOVED is enabled.
1132 * Fix mbedtls_ctr_drbg_free() on an initialized but unseeded context. When
1133 MBEDTLS_AES_ALT is enabled, it could call mbedtls_aes_free() on an
1134 uninitialized context.
1135 * Fix a build issue on Windows using CMake where the source and build
1136 directories could not be on different drives. Fixes #5751.
1137 * Fix bugs and missing dependencies when building and testing
1138 configurations with only one encryption type enabled in TLS 1.2.
1139 * Provide the missing definition of mbedtls_setbuf() in some configurations
1140 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
1141 * Fix compilation errors when trying to build with
1142 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
1143 * Fix memory leak in ssl_parse_certificate_request() caused by
1144 mbedtls_x509_get_name() not freeing allocated objects in case of error.
1145 Change mbedtls_x509_get_name() to clean up allocated objects on error.
1146 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
1147 MBEDTLS_USE_PSA_CRYPTO or MBEDTLS_PK_WRITE_C. Fixes #6408.
1148 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
1149 MBEDTLS_PK_PARSE_C. Fixes #6409.
1150 * Fix ECDSA verification, where it was not always validating the
1151 public key. This bug meant that it was possible to verify a
1152 signature with an invalid public key, in some cases. Reported by
1153 Guido Vranken using Cryptofuzz in #4420.
1154 * Fix a possible null pointer dereference if a memory allocation fails
1155 in TLS PRF code. Reported by Michael Madsen in #6516.
1156 * Fix TLS 1.3 session resumption. Fixes #6488.
1157 * Add a configuration check to exclude optional client authentication
1158 in TLS 1.3 (where it is forbidden).
1159 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
1160 bytes when parsing certificates containing a binary RFC 4108
1161 HardwareModuleName as a Subject Alternative Name extension. Hardware
1162 serial numbers are now rendered in hex format. Fixes #6262.
1163 * Fix bug in error reporting in dh_genprime.c where upon failure,
1164 the error code returned by mbedtls_mpi_write_file() is overwritten
1165 and therefore not printed.
1166 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
1167 with A > 0 created an unintended representation of the value 0 which was
1168 not processed correctly by some bignum operations. Fix this. This had no
1169 consequence on cryptography code, but might affect applications that call
1170 bignum directly and use negative numbers.
1171 * Fix a bug whereby the list of signature algorithms sent as part of
1172 the TLS 1.2 server certificate request would get corrupted, meaning the
1173 first algorithm would not get sent and an entry consisting of two random
1174 bytes would be sent instead. Found by Serban Bejan and Dudek Sebastian.
1175 * Fix undefined behavior (typically harmless in practice) of
1176 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
1177 when both operands are 0 and the left operand is represented with 0 limbs.
1178 * Fix undefined behavior (typically harmless in practice) when some bignum
1179 functions receive the most negative value of mbedtls_mpi_sint. Credit
1180 to OSS-Fuzz. Fixes #6597.
1181 * Fix undefined behavior (typically harmless in practice) in PSA ECB
1182 encryption and decryption.
1183 * Move some SSL-specific code out of libmbedcrypto where it had been placed
1184 accidentally.
1185 * Fix a build error when compiling the bignum module for some Arm platforms.
1186 Fixes #6089, #6124, #6217.
1187
1188Changes
1189 * Add the ability to query PSA_WANT_xxx macros to query_compile_time_config.
1190 * Calling AEAD tag-specific functions for non-AEAD algorithms (which
1191 should not be done - they are documented for use only by AES-GCM and
1192 ChaCha20+Poly1305) now returns MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
1193 instead of success (0).
1194
Paul Elliott869298b2022-07-12 10:39:42 +01001195= Mbed TLS 3.2.1 branch released 2022-07-12
1196
1197Bugfix
Paul Elliott4ecb1b52022-09-20 14:33:13 +01001198 * Re-add missing generated file library/psa_crypto_driver_wrappers.c
Paul Elliott869298b2022-07-12 10:39:42 +01001199
Paul Elliott2238eed2022-07-08 18:19:12 +01001200= Mbed TLS 3.2.0 branch released 2022-07-11
1201
1202Default behavior changes
1203 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
1204 for IV lengths other than 12. The library was silently overwriting this
1205 length with 12, but did not inform the caller about it. Fixes #4301.
1206
1207Requirement changes
1208 * The library will no longer compile out of the box on a platform without
1209 setbuf(). If your platform does not have setbuf(), you can configure an
1210 alternative function by enabling MBEDTLS_PLATFORM_SETBUF_ALT or
1211 MBEDTLS_PLATFORM_SETBUF_MACRO.
1212
1213New deprecations
1214 * Deprecate mbedtls_ssl_conf_max_version() and
1215 mbedtls_ssl_conf_min_version() in favor of
1216 mbedtls_ssl_conf_max_tls_version() and
1217 mbedtls_ssl_conf_min_tls_version().
1218 * Deprecate mbedtls_cipher_setup_psa(). Use psa_aead_xxx() or
1219 psa_cipher_xxx() directly instead.
1220 * Secure element drivers enabled by MBEDTLS_PSA_CRYPTO_SE_C are deprecated.
1221 This was intended as an experimental feature, but had not been explicitly
1222 documented as such. Use opaque drivers with the interface enabled by
1223 MBEDTLS_PSA_CRYPTO_DRIVERS instead.
1224 * Deprecate mbedtls_ssl_conf_sig_hashes() in favor of the more generic
1225 mbedtls_ssl_conf_sig_algs(). Signature algorithms for the TLS 1.2 and
1226 TLS 1.3 handshake should now be configured with
1227 mbedtls_ssl_conf_sig_algs().
1228
1229Features
1230 * Add accessor to obtain ciphersuite id from ssl context.
1231 * Add accessors to get members from ciphersuite info.
1232 * Add mbedtls_ssl_ticket_rotate() for external ticket rotation.
1233 * Add accessor to get the raw buffer pointer from a PEM context.
1234 * The structures mbedtls_ssl_config and mbedtls_ssl_context now store
1235 a piece of user data which is reserved for the application. The user
1236 data can be either a pointer or an integer.
1237 * Add an accessor function to get the configuration associated with
1238 an SSL context.
1239 * Add a function to access the protocol version from an SSL context in a
1240 form that's easy to compare. Fixes #5407.
1241 * Add function mbedtls_md_info_from_ctx() to recall the message digest
1242 information that was used to set up a message digest context.
1243 * Add ALPN support in TLS 1.3 clients.
1244 * Add server certificate selection callback near end of Client Hello.
1245 Register callback with mbedtls_ssl_conf_cert_cb().
1246 * Provide mechanism to reset handshake cert list by calling
1247 mbedtls_ssl_set_hs_own_cert() with NULL value for own_cert param.
1248 * Add accessor mbedtls_ssl_get_hs_sni() to retrieve SNI from within
1249 cert callback (mbedtls_ssl_conf_cert_cb()) during handshake.
1250 * The X.509 module now uses PSA hash acceleration if present.
1251 * Add support for psa crypto key derivation for elliptic curve
1252 keys. Fixes #3260.
1253 * Add function mbedtls_timing_get_final_delay() to access the private
1254 final delay field in an mbedtls_timing_delay_context, as requested in
1255 #5183.
1256 * Add mbedtls_pk_sign_ext() which allows generating RSA-PSS signatures when
1257 PSA Crypto is enabled.
1258 * Add function mbedtls_ecp_export() to export ECP key pair parameters.
1259 Fixes #4838.
1260 * Add function mbedtls_ssl_is_handshake_over() to enable querying if the SSL
1261 Handshake has completed or not, and thus whether to continue calling
1262 mbedtls_ssl_handshake_step(), requested in #4383.
1263 * Add the function mbedtls_ssl_get_own_cid() to access our own connection id
1264 within mbedtls_ssl_context, as requested in #5184.
1265 * Introduce mbedtls_ssl_hs_cb_t typedef for use with
1266 mbedtls_ssl_conf_cert_cb() and perhaps future callbacks
1267 during TLS handshake.
1268 * Add functions mbedtls_ssl_conf_max_tls_version() and
1269 mbedtls_ssl_conf_min_tls_version() that use a single value to specify
1270 the protocol version.
1271 * Extend the existing PSA_ALG_TLS12_PSK_TO_MS() algorithm to support
1272 mixed-PSK. Add an optional input PSA_KEY_DERIVATION_INPUT_OTHER_SECRET
1273 holding the other secret.
1274 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
1275 feature requirements in the file named by the new macro
1276 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
1277 Furthermore you may name an additional file to include after the main
1278 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
1279 * Add the function mbedtls_x509_crt_has_ext_type() to access the ext types
1280 field within mbedtls_x509_crt context, as requested in #5585.
1281 * Add HKDF-Expand and HKDF-Extract as separate algorithms in the PSA API.
1282 * Add support for the ARMv8 SHA-2 acceleration instructions when building
1283 for Aarch64.
1284 * Add support for authentication of TLS 1.3 clients by TLS 1.3 servers.
1285 * Add support for server HelloRetryRequest message. The TLS 1.3 client is
1286 now capable of negotiating another shared secret if the one sent in its
1287 first ClientHello was not suitable to the server.
1288 * Add support for client-side TLS version negotiation. If both TLS 1.2 and
1289 TLS 1.3 protocols are enabled in the build of Mbed TLS, the TLS client now
1290 negotiates TLS 1.3 or TLS 1.2 with TLS servers.
1291 * Enable building of Mbed TLS with TLS 1.3 protocol support but without TLS
1292 1.2 protocol support.
1293 * Mbed TLS provides an implementation of a TLS 1.3 server (ephemeral key
1294 establishment only). See docs/architecture/tls13-support.md for a
1295 description of the support. The MBEDTLS_SSL_PROTO_TLS1_3 and
1296 MBEDTLS_SSL_SRV_C configuration options control this.
1297 * Add accessors to configure DN hints for certificate request:
1298 mbedtls_ssl_conf_dn_hints() and mbedtls_ssl_set_hs_dn_hints()
1299 * The configuration option MBEDTLS_USE_PSA_CRYPTO, which previously
1300 affected only a limited subset of crypto operations in TLS, X.509 and PK,
1301 now causes most of them to be done using PSA Crypto; see
1302 docs/use-psa-crypto.md for the list of exceptions.
1303 * The function mbedtls_pk_setup_opaque() now supports RSA key pairs as well.
1304 Opaque keys can now be used everywhere a private key is expected in the
1305 TLS and X.509 modules.
1306 * Opaque pre-shared keys for TLS, provisioned with
1307 mbedtls_ssl_conf_psk_opaque() or mbedtls_ssl_set_hs_psk_opaque(), which
1308 previously only worked for "pure" PSK key exchange, now can also be used
1309 for the "mixed" PSK key exchanges as well: ECDHE-PSK, DHE-PSK, RSA-PSK.
1310 * cmake now detects if it is being built as a sub-project, and in that case
1311 disables the target export/installation and package configuration.
1312 * Make USE_PSA_CRYPTO compatible with KEY_ID_ENCODES_OWNER. Fixes #5259.
1313 * Add example programs cipher_aead_demo.c, md_hmac_demo.c, aead_demo.c
1314 and hmac_demo.c, which use PSA and the md/cipher interfaces side
1315 by side in order to illustrate how the operation is performed in PSA.
1316 Addresses #5208.
1317
1318Security
1319 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
1320 module before freeing them. These buffers contain secret key material, and
1321 could thus potentially leak the key through freed heap.
1322 * Fix potential memory leak inside mbedtls_ssl_cache_set() with
1323 an invalid session id length.
1324 * Add the platform function mbedtls_setbuf() to allow buffering to be
1325 disabled on stdio files, to stop secrets loaded from said files being
1326 potentially left in memory after file operations. Reported by
1327 Glenn Strauss.
1328 * Fix a potential heap buffer overread in TLS 1.2 server-side when
1329 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
1330 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
1331 is selected. This may result in an application crash or potentially an
1332 information leak.
1333 * Fix a buffer overread in DTLS ClientHello parsing in servers with
1334 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
1335 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
1336 after the end of the SSL input buffer. The buffer overread only happens
1337 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
1338 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
1339 and possibly up to 571 bytes with a custom cookie check function.
1340 Reported by the Cybeats PSI Team.
1341 * Fix a buffer overread in TLS 1.3 Certificate parsing. An unauthenticated
1342 client or server could cause an MbedTLS server or client to overread up
1343 to 64 kBytes of data and potentially overread the input buffer by that
1344 amount minus the size of the input buffer. As overread data undergoes
1345 various checks, the likelihood of reaching the boundary of the input
1346 buffer is rather small but increases as its size
1347 MBEDTLS_SSL_IN_CONTENT_LEN decreases.
1348 * Fix check of certificate key usage in TLS 1.3. The usage of the public key
1349 provided by a client or server certificate for authentication was not
1350 checked properly when validating the certificate. This could cause a
1351 client or server to be able to authenticate itself through a certificate
1352 to an Mbed TLS TLS 1.3 server or client while it does not own a proper
1353 certificate to do so.
1354
1355Bugfix
1356 * Declare or use PSA_WANT_ALG_CCM_STAR_NO_TAG following the general
1357 pattern for PSA_WANT_xxx symbols. Previously you had to specify
1358 PSA_WANT_ALG_CCM for PSA_ALG_CCM_STAR_NO_TAG.
1359 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
1360 * Fixed swap of client and server random bytes when exporting them alongside
1361 TLS 1.3 handshake and application traffic secret.
1362 * Fix several bugs (warnings, compiler and linker errors, test failures)
1363 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
1364 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
1365 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
1366 client would fail to check that the curve selected by the server for
1367 ECDHE was indeed one that was offered. As a result, the client would
1368 accept any curve that it supported, even if that curve was not allowed
1369 according to its configuration. Fixes #5291.
1370 * The TLS 1.3 implementation is now compatible with the
1371 MBEDTLS_USE_PSA_CRYPTO configuration option.
1372 * Fix unit tests that used 0 as the file UID. This failed on some
1373 implementations of PSA ITS. Fixes #3838.
1374 * Fix mbedtls_ssl_get_version() not reporting TLSv1.3. Fixes #5406.
1375 * Fix API violation in mbedtls_md_process() test by adding a call to
1376 mbedtls_md_starts(). Fixes #2227.
1377 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
1378 to catch bad uses of time.h.
1379 * Fix a race condition in out-of-source builds with CMake when generated data
1380 files are already present. Fixes #5374.
1381 * Fix the library search path when building a shared library with CMake
1382 on Windows.
1383 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
1384 potentially leading to corrupted alert messages being sent in case
1385 the function needs to be re-called after initially returning
1386 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
1387 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but not
1388 MBEDTLS_DEBUG_C, DTLS handshakes using CID would crash due to a null
1389 pointer dereference. Fix this. Fixes #3998.
1390 The fix was released, but not announced, in Mbed TLS 3.1.0.
1391 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
1392 documentation stated that the `allowed_pks` field applies to signatures
1393 only, but in fact it does apply to the public key type of the end entity
1394 certificate, too. Fixes #1992.
1395 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
1396 not NULL and val_len is zero.
1397 * Fix compilation error with mingw32. Fixed by Cameron Cawley in #4211.
1398 * Fix compilation error when using C++ Builder on Windows. Reported by
1399 Miroslav Mastny in #4015.
1400 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
1401 applicable. Fixes #5735.
1402 * Fix a bug in the x25519 example program where the removal of
1403 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
1404 #3191.
1405 * Fix a TLS 1.3 handshake failure when the peer Finished message has not
1406 been received yet when we first try to fetch it.
1407 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
1408 GeneralizedTime. Fixes #5465.
1409 * Add mbedtls_x509_dn_get_next function to return the next relative DN in
1410 an X509 name, to allow walking the name list. Fixes #5431.
1411 * Fix order value of curve x448.
1412 * Fix string representation of DNs when outputting values containing commas
1413 and other special characters, conforming to RFC 1779. Fixes #769.
1414 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
1415 * Fix check_config.h to check that we have MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1416 when MBEDTLS_SSL_PROTO_TLS1_3 is specified, and make this and other
1417 dependencies explicit in the documentation. Fixes #5610.
1418 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
1419 * Fix a TLS 1.3 handshake failure when the first attempt to send the client
1420 Finished message on the network cannot be satisfied. Fixes #5499.
1421 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
1422 memory conditions.
1423 * Fix server connection identifier setting for outgoing encrypted records
1424 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
1425 connection identifier, the Mbed TLS client now properly sends the server
1426 connection identifier in encrypted record headers. Fix #5872.
1427 * Fix a null pointer dereference when performing some operations on zero
1428 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
1429 by 2, and mbedtls_mpi_write_string() in base 2).
1430 * Fix record sizes larger than 16384 being sometimes accepted despite being
1431 non-compliant. This could not lead to a buffer overflow. In particular,
1432 application data size was already checked correctly.
1433 * Fix MBEDTLS_SVC_KEY_ID_GET_KEY_ID() and MBEDTLS_SVC_KEY_ID_GET_OWNER_ID()
1434 which have been broken, resulting in compilation errors, since Mbed TLS
1435 3.0.
1436 * Ensure that TLS 1.2 ciphersuite/certificate and key selection takes into
1437 account not just the type of the key (RSA vs EC) but also what it can
1438 actually do. Resolves #5831.
1439 * Fix CMake windows host detection, especially when cross compiling.
1440 * Fix an error in make where the absence of a generated file caused
1441 make to break on a clean checkout. Fixes #5340.
1442 * Work around an MSVC ARM64 compiler bug causing incorrect behaviour
1443 in mbedtls_mpi_exp_mod(). Reported by Tautvydas Žilys in #5467.
Dave Rodgman2b52a2e2022-12-12 15:23:44 +00001444 * Removed the prompt to exit from all windows build programs, which was causing
Paul Elliott2238eed2022-07-08 18:19:12 +01001445 issues in CI/CD environments.
1446
1447Changes
1448 * The file library/psa_crypto_driver_wrappers.c is now generated
1449 from a template. In the future, the generation will support
1450 driver descriptions. For the time being, to customize this file,
1451 see docs/proposed/psa-driver-wrappers-codegen-migration-guide.md
1452 * Return PSA_ERROR_INVALID_ARGUMENT if the algorithm passed to one-shot
1453 AEAD functions is not an AEAD algorithm. This aligns them with the
1454 multipart functions, and the PSA Crypto API 1.1 specification.
1455 * In mbedtls_pk_parse_key(), if no password is provided, don't allocate a
1456 temporary variable on the heap. Suggested by Sergey Kanatov in #5304.
1457 * Assume source files are in UTF-8 when using MSVC with CMake.
1458 * Fix runtime library install location when building with CMake and MinGW.
1459 DLLs are now installed in the bin directory instead of lib.
1460 * cmake: Use GnuInstallDirs to customize install directories
1461 Replace custom LIB_INSTALL_DIR variable with standard CMAKE_INSTALL_LIBDIR
1462 variable. For backward compatibility, set CMAKE_INSTALL_LIBDIR if
1463 LIB_INSTALL_DIR is set.
1464 * Add a CMake option that enables static linking of the runtime library
1465 in Microsoft Visual C++ compiler. Contributed by Microplankton.
1466 * In CMake builds, add aliases for libraries so that the normal MbedTLS::*
1467 targets work when MbedTLS is built as a subdirectory. This allows the
1468 use of FetchContent, as requested in #5688.
Paul Bakker99ed6782011-01-05 14:48:42 +00001469
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001470= mbed TLS 3.1.0 branch released 2021-12-17
Ronald Cron831cf482021-12-15 09:02:38 +01001471
1472API changes
1473 * New error code for GCM: MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL.
1474 Alternative GCM implementations are expected to verify
1475 the length of the provided output buffers and to return the
1476 MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL in case the buffer length is too small.
1477 * You can configure groups for a TLS key exchange with the new function
1478 mbedtls_ssl_conf_groups(). It extends mbedtls_ssl_conf_curves().
1479 * Declare a number of structure fields as public: the fields of
1480 mbedtls_ecp_curve_info, the fields describing the result of ASN.1 and
1481 X.509 parsing, and finally the field fd of mbedtls_net_context on
1482 POSIX/Unix-like platforms.
1483
1484Requirement changes
1485 * Sign-magnitude and one's complement representations for signed integers are
1486 not supported. Two's complement is the only supported representation.
1487
1488New deprecations
1489 * Deprecate mbedtls_ssl_conf_curves() in favor of the more generic
1490 mbedtls_ssl_conf_groups().
1491
1492Removals
1493 * Remove the partial support for running unit tests via Greentea on Mbed OS,
1494 which had been unmaintained since 2018.
1495
1496Features
1497 * Enable support for Curve448 via the PSA API. Contributed by
1498 Archana Madhavan in #4626. Fixes #3399 and #4249.
1499 * The identifier of the CID TLS extension can be configured by defining
1500 MBEDTLS_TLS_EXT_CID at compile time.
1501 * Implement the PSA multipart AEAD interface, currently supporting
1502 ChaChaPoly and GCM.
1503 * Warn if errors from certain functions are ignored. This is currently
1504 supported on GCC-like compilers and on MSVC and can be configured through
1505 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
1506 (where supported) for critical functions where ignoring the return
1507 value is almost always a bug. Enable the new configuration option
1508 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
1509 is currently implemented in the AES, DES and md modules, and will be
1510 extended to other modules in the future.
1511 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
1512 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
1513 * Add support for CCM*-no-tag cipher to the PSA.
1514 Currently only 13-byte long IV's are supported.
1515 For decryption a minimum of 16-byte long input is expected.
1516 These restrictions may be subject to change.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001517 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Ronald Cron831cf482021-12-15 09:02:38 +01001518 * Add functions to get the IV and block size from cipher_info structs.
1519 * Add functions to check if a cipher supports variable IV or key size.
1520 * Add the internal implementation of and support for CCM to the PSA multipart
1521 AEAD interface.
1522 * Mbed TLS provides a minimum viable implementation of the TLS 1.3
1523 protocol. See docs/architecture/tls13-support.md for the definition of
1524 the TLS 1.3 Minimum Viable Product (MVP). The MBEDTLS_SSL_PROTO_TLS1_3
1525 configuration option controls the enablement of the support. The APIs
1526 mbedtls_ssl_conf_min_version() and mbedtls_ssl_conf_max_version() allow
1527 to select the 1.3 version of the protocol to establish a TLS connection.
1528 * Add PSA API definition for ARIA.
1529
1530Security
1531 * Zeroize several intermediate variables used to calculate the expected
1532 value when verifying a MAC or AEAD tag. This hardens the library in
1533 case the value leaks through a memory disclosure vulnerability. For
1534 example, a memory disclosure vulnerability could have allowed a
1535 man-in-the-middle to inject fake ciphertext into a DTLS connection.
1536 * In psa_aead_generate_nonce(), do not read back from the output buffer.
1537 This fixes a potential policy bypass or decryption oracle vulnerability
1538 if the output buffer is in memory that is shared with an untrusted
1539 application.
1540 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
1541 from the output buffer. This fixes a potential policy bypass or decryption
1542 oracle vulnerability if the output buffer is in memory that is shared with
1543 an untrusted application.
1544 * Fix a double-free that happened after mbedtls_ssl_set_session() or
1545 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
1546 (out of memory). After that, calling mbedtls_ssl_session_free()
1547 and mbedtls_ssl_free() would cause an internal session buffer to
1548 be free()'d twice.
1549
1550Bugfix
1551 * Stop using reserved identifiers as local variables. Fixes #4630.
1552 * The GNU makefiles invoke python3 in preference to python except on Windows.
1553 The check was accidentally not performed when cross-compiling for Windows
1554 on Linux. Fix this. Fixes #4774.
1555 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
1556 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
1557 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
1558 * Don't use the obsolete header path sys/fcntl.h in unit tests.
1559 These header files cause compilation errors in musl.
1560 Fixes #4969.
1561 * Fix missing constraints on x86_64 and aarch64 assembly code
1562 for bignum multiplication that broke some bignum operations with
1563 (at least) Clang 12.
1564 Fixes #4116, #4786, #4917, #4962.
1565 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
1566 * Failures of alternative implementations of AES or DES single-block
1567 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
1568 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
1569 This does not concern the implementation provided with Mbed TLS,
1570 where this function cannot fail, or full-module replacements with
1571 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
1572 * Some failures of HMAC operations were ignored. These failures could only
1573 happen with an alternative implementation of the underlying hash module.
1574 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
1575 * Fix compile-time or run-time errors in PSA
1576 AEAD functions when ChachaPoly is disabled. Fixes #5065.
1577 * Remove PSA'a AEAD finish/verify output buffer limitation for GCM.
1578 The requirement of minimum 15 bytes for output buffer in
1579 psa_aead_finish() and psa_aead_verify() does not apply to the built-in
1580 implementation of GCM.
1581 * Move GCM's update output buffer length verification from PSA AEAD to
1582 the built-in implementation of the GCM.
1583 The requirement for output buffer size to be equal or greater then
1584 input buffer size is valid only for the built-in implementation of GCM.
1585 Alternative GCM implementations can process whole blocks only.
1586 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
1587 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
1588 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
1589 This algorithm now accepts only the same salt length for verification
1590 that it produces when signing, as documented. Use the new algorithm
1591 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
1592 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
1593 for algorithm values that fully encode the hashing step, as per the PSA
1594 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
1595 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
1596 all algorithms that can be used with psa_{sign,verify}_hash(), including
1597 these two.
1598 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
1599 not to list other shared libraries they need.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001600 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
1601 exceeds 2^32. Fixes #4884.
Ronald Cron831cf482021-12-15 09:02:38 +01001602 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
1603 version 11.
1604 * Fix the build when no SHA2 module is included. Fixes #4930.
1605 * Fix the build when only the bignum module is included. Fixes #4929.
1606 * Fix a potential invalid pointer dereference and infinite loop bugs in
1607 pkcs12 functions when the password is empty. Fix the documentation to
1608 better describe the inputs to these functions and their possible values.
1609 Fixes #5136.
1610 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
1611 operations psa_mac_compute() and psa_mac_sign_setup().
1612 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
1613 operations psa_mac_verify() and psa_mac_verify_setup().
1614
1615Changes
1616 * Explicitly mark the fields mbedtls_ssl_session.exported and
1617 mbedtls_ssl_config.respect_cli_pref as private. This was an
1618 oversight during the run-up to the release of Mbed TLS 3.0.
1619 The fields were never intended to be public.
1620 * Implement multi-part CCM API.
1621 The multi-part functions: mbedtls_ccm_starts(), mbedtls_ccm_set_lengths(),
1622 mbedtls_ccm_update_ad(), mbedtls_ccm_update(), mbedtls_ccm_finish()
1623 were introduced in mbedTLS 3.0 release, however their implementation was
1624 postponed until now.
1625 Implemented functions support chunked data input for both CCM and CCM*
1626 algorithms.
1627 * Remove MBEDTLS_SSL_EXPORT_KEYS, making it always on and increasing the
1628 code size by about 80B on an M0 build. This option only gated an ability
1629 to set a callback, but was deemed unnecessary as it was yet another define
1630 to remember when writing tests, or test configurations. Fixes #4653.
1631 * Improve the performance of base64 constant-flow code. The result is still
1632 slower than the original non-constant-flow implementation, but much faster
1633 than the previous constant-flow implementation. Fixes #4814.
1634 * Ignore plaintext/ciphertext lengths for CCM*-no-tag operations.
1635 For CCM* encryption/decryption without authentication, input
1636 length will be ignored.
1637 * Indicate in the error returned if the nonce length used with
1638 ChaCha20-Poly1305 is invalid, and not just unsupported.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001639 * The mbedcrypto library includes a new source code module constant_time.c,
1640 containing various functions meant to resist timing side channel attacks.
1641 This module does not have a separate configuration option, and functions
1642 from this module will be included in the build as required. Currently
1643 most of the interface of this module is private and may change at any
1644 time.
1645 * The generated configuration-independent files are now automatically
1646 generated by the CMake build system on Unix-like systems. This is not
1647 yet supported when cross-compiling.
Ronald Cron831cf482021-12-15 09:02:38 +01001648
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001649= Mbed TLS 3.0.0 branch released 2021-07-07
Dave Rodgman10ba5532021-04-26 14:58:26 +01001650
1651API changes
1652 * Remove HAVEGE module.
1653 The design of HAVEGE makes it unsuitable for microcontrollers. Platforms
1654 with a more complex CPU usually have an operating system interface that
1655 provides better randomness. Instead of HAVEGE, declare OS or hardware RNG
1656 interfaces with mbedtls_entropy_add_source() and/or use an entropy seed
1657 file created securely during device provisioning. See
Dave Rodgmanb3196842022-10-12 16:47:08 +01001658 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/add-entropy-sources-to-entropy-pool/ for
Dave Rodgman10ba5532021-04-26 14:58:26 +01001659 more information.
1660 * Add missing const attributes to API functions.
1661 * Remove helpers for the transition from Mbed TLS 1.3 to Mbed TLS 2.0: the
1662 header compat-1.3.h and the script rename.pl.
1663 * Remove certs module from the API.
1664 Transfer keys and certificates embedded in the library to the test
1665 component. This contributes to minimizing library API and discourages
1666 users from using unsafe keys in production.
1667 * Move alt helpers and definitions.
1668 Various helpers and definitions available for use in alt implementations
1669 have been moved out of the include/ directory and into the library/
1670 directory. The files concerned are ecp_internal.h and rsa_internal.h
Gilles Peskine6a2fb612021-05-24 22:25:04 +02001671 which have also been renamed to ecp_internal_alt.h and rsa_alt_helpers.h
Dave Rodgman10ba5532021-04-26 14:58:26 +01001672 respectively.
1673 * Move internal headers.
1674 Header files that were only meant for the library's internal use and
1675 were not meant to be used in application code have been moved out of
1676 the include/ directory. The headers concerned are bn_mul.h, aesni.h,
1677 padlock.h, entropy_poll.h and *_internal.h.
1678 * Drop support for parsing SSLv2 ClientHello
1679 (MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO).
1680 * Drop support for SSLv3 (MBEDTLS_SSL_PROTO_SSL3).
Dave Rodgman10ba5532021-04-26 14:58:26 +01001681 * Drop support for TLS record-level compression (MBEDTLS_ZLIB_SUPPORT).
1682 * Drop support for RC4 TLS ciphersuites.
1683 * Drop support for single-DES ciphersuites.
1684 * Drop support for MBEDTLS_SSL_HW_RECORD_ACCEL.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001685 * Update AEAD output size macros to bring them in line with the PSA Crypto
1686 API version 1.0 spec. This version of the spec parameterizes them on the
1687 key type used, as well as the key bit-size in the case of
1688 PSA_AEAD_TAG_LENGTH.
1689 * Add configuration option MBEDTLS_X509_REMOVE_INFO which
1690 removes the mbedtls_x509_*_info(), mbedtls_debug_print_crt()
1691 as well as other functions and constants only used by
1692 those functions. This reduces the code footprint by
1693 several kB.
1694 * Remove SSL error codes `MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED`
1695 and `MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH` which are never
1696 returned from the public SSL API.
1697 * Remove `MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE` and return
1698 `MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL` instead.
Dave Rodgman814b0992021-07-02 12:11:14 +01001699 * The output parameter of mbedtls_sha512_finish, mbedtls_sha512,
1700 mbedtls_sha256_finish and mbedtls_sha256 now has a pointer type
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001701 rather than array type. This removes spurious warnings in some compilers
1702 when outputting a SHA-384 or SHA-224 hash into a buffer of exactly
1703 the hash size.
1704 * Remove the MBEDTLS_TEST_NULL_ENTROPY config option. Fixes #4388.
1705 * The interface of the GCM module has changed to remove restrictions on
1706 how the input to multipart operations is broken down. mbedtls_gcm_finish()
Dave Rodgmaneaef0b72021-07-01 16:59:13 +01001707 now takes extra output parameters for the last partial output block.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001708 mbedtls_gcm_update() now takes extra parameters for the output length.
1709 The software implementation always produces the full output at each
1710 call to mbedtls_gcm_update(), but alternative implementations activated
1711 by MBEDTLS_GCM_ALT may delay partial blocks to the next call to
1712 mbedtls_gcm_update() or mbedtls_gcm_finish(). Furthermore, applications
1713 no longer pass the associated data to mbedtls_gcm_starts(), but to the
1714 new function mbedtls_gcm_update_ad().
1715 These changes are backward compatible for users of the cipher API.
1716 * Replace MBEDTLS_SHA512_NO_SHA384 config option with MBEDTLS_SHA384_C.
1717 This separates config option enabling the SHA384 algorithm from option
1718 enabling the SHA512 algorithm. Fixes #4034.
1719 * Introduce MBEDTLS_SHA224_C.
1720 This separates config option enabling the SHA224 algorithm from option
1721 enabling SHA256.
Dave Rodgman745e3582021-07-05 18:53:31 +01001722 * The getter and setter API of the SSL session cache (used for
1723 session-ID based session resumption) has changed to that of
1724 a key-value store with keys being session IDs and values
1725 being opaque instances of `mbedtls_ssl_session`.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001726 * Remove the mode parameter from RSA operation functions. Signature and
1727 decryption functions now always use the private key and verification and
1728 encryption use the public key. Verification functions also no longer have
1729 RNG parameters.
Dave Rodgman745e3582021-07-05 18:53:31 +01001730 * Modify semantics of `mbedtls_ssl_conf_[opaque_]psk()`:
1731 In Mbed TLS 2.X, the API prescribes that later calls overwrite
1732 the effect of earlier calls. In Mbed TLS 3.0, calling
1733 `mbedtls_ssl_conf_[opaque_]psk()` more than once will fail,
1734 leaving the PSK that was configured first intact.
1735 Support for more than one PSK may be added in 3.X.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001736 * The function mbedtls_x509write_csr_set_extension() has an extra parameter
1737 which allows to mark an extension as critical. Fixes #4055.
1738 * For multi-part AEAD operations with the cipher module, calling
1739 mbedtls_cipher_finish() is now mandatory. Previously the documentation
1740 was unclear on this point, and this function happened to never do
1741 anything with the currently implemented AEADs, so in practice it was
1742 possible to skip calling it, which is no longer supported.
1743 * The option MBEDTLS_ECP_FIXED_POINT_OPTIM use pre-computed comb tables
1744 instead of computing tables in runtime. Thus, this option now increase
1745 code size, and it does not increase RAM usage in runtime anymore.
1746 * Remove the SSL APIs mbedtls_ssl_get_input_max_frag_len() and
1747 mbedtls_ssl_get_output_max_frag_len(), and add a new API
1748 mbedtls_ssl_get_max_in_record_payload(), complementing the existing
1749 mbedtls_ssl_get_max_out_record_payload().
1750 Uses of mbedtls_ssl_get_input_max_frag_len() and
1751 mbedtls_ssl_get_input_max_frag_len() should be replaced by
1752 mbedtls_ssl_get_max_in_record_payload() and
1753 mbedtls_ssl_get_max_out_record_payload(), respectively.
1754 * mbedtls_rsa_init() now always selects the PKCS#1v1.5 encoding for an RSA
1755 key. To use an RSA key with PSS or OAEP, call mbedtls_rsa_set_padding()
1756 after initializing the context. mbedtls_rsa_set_padding() now returns an
1757 error if its parameters are invalid.
Dave Rodgman745e3582021-07-05 18:53:31 +01001758 * Replace MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE by a runtime
1759 configuration function mbedtls_ssl_conf_preference_order(). Fixes #4398.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001760 * Instead of accessing the len field of a DHM context, which is no longer
1761 supported, use the new function mbedtls_dhm_get_len() .
1762 * In modules that implement cryptographic hash functions, many functions
1763 mbedtls_xxx() now return int instead of void, and the corresponding
1764 function mbedtls_xxx_ret() which was identical except for returning int
1765 has been removed. This also concerns mbedtls_xxx_drbg_update(). See the
1766 migration guide for more information. Fixes #4212.
1767 * For all functions that take a random number generator (RNG) as a
1768 parameter, this parameter is now mandatory (that is, NULL is not an
1769 acceptable value). Functions which previously accepted NULL and now
1770 reject it are: the X.509 CRT and CSR writing functions; the PK and RSA
1771 sign and decrypt function; mbedtls_rsa_private(); the functions
1772 in DHM and ECDH that compute the shared secret; the scalar multiplication
1773 functions in ECP.
1774 * The following functions now require an RNG parameter:
1775 mbedtls_ecp_check_pub_priv(), mbedtls_pk_check_pair(),
1776 mbedtls_pk_parse_key(), mbedtls_pk_parse_keyfile().
1777 * mbedtls_ssl_conf_export_keys_ext_cb() and
1778 mbedtls_ssl_conf_export_keys_cb() have been removed and
1779 replaced by a new API mbedtls_ssl_set_export_keys_cb().
1780 Raw keys and IVs are no longer passed to the callback.
1781 Further, callbacks now receive an additional parameter
1782 indicating the type of secret that's being exported,
1783 paving the way for the larger number of secrets
1784 in TLS 1.3. Finally, the key export callback and
1785 context are now connection-specific.
1786 * Signature functions in the RSA and PK modules now require the hash
1787 length parameter to be the size of the hash input. For RSA signatures
1788 other than raw PKCS#1 v1.5, this must match the output size of the
1789 specified hash algorithm.
1790 * The functions mbedtls_pk_sign(), mbedtls_pk_sign_restartable(),
1791 mbedtls_ecdsa_write_signature() and
1792 mbedtls_ecdsa_write_signature_restartable() now take an extra parameter
1793 indicating the size of the output buffer for the signature.
1794 * Implement one-shot cipher functions, psa_cipher_encrypt and
1795 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
1796 specification.
1797 * Direct access to fields of structures declared in public headers is no
1798 longer supported except for fields that are documented public. Use accessor
1799 functions instead. For more information, see the migration guide entry
1800 "Most structure fields are now private".
Dave Rodgman9bd03892021-07-01 16:59:49 +01001801 * mbedtls_ssl_get_session_pointer() has been removed, and
1802 mbedtls_ssl_{set,get}_session() may now only be called once for any given
1803 SSL context.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001804
1805Default behavior changes
1806 * Enable by default the functionalities which have no reason to be disabled.
1807 They are: ARIA block cipher, CMAC mode, elliptic curve J-PAKE library and
1808 Key Wrapping mode as defined in NIST SP 800-38F. Fixes #4036.
1809 * Some default policies for X.509 certificate verification and TLS have
1810 changed: curves and hashes weaker than 255 bits are no longer accepted
1811 by default. The default order in TLS now favors faster curves over larger
1812 curves.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001813
1814Requirement changes
1815 * The library now uses the %zu format specifier with the printf() family of
1816 functions, so requires a toolchain that supports it. This change does not
1817 affect the maintained LTS branches, so when contributing changes please
1818 bear this in mind and do not add them to backported code.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001819 * If you build the development version of Mbed TLS, rather than an official
1820 release, some configuration-independent files are now generated at build
1821 time rather than checked into source control. This includes some library
1822 source files as well as the Visual Studio solution. Perl, Python 3 and a
1823 C compiler for the host platform are required. See “Generated source files
1824 in the development branch” in README.md for more information.
1825 * Refresh the minimum supported versions of tools to build the
1826 library. CMake versions older than 3.10.2 and Python older
1827 than 3.6 are no longer supported.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001828
1829Removals
1830 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
1831 compile-time option, which was off by default. Users should not trust
1832 certificates signed with SHA-1 due to the known attacks against SHA-1.
Manuel Pégourié-Gonnard143b1e32021-05-05 09:46:01 +02001833 If needed, SHA-1 certificates can still be verified by using a custom
Manuel Pégourié-Gonnarde7563062021-04-26 10:08:29 +02001834 verification profile.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001835 * Removed deprecated things in psa/crypto_compat.h. Fixes #4284
1836 * Removed deprecated functions from hashing modules. Fixes #4280.
1837 * Remove PKCS#11 library wrapper. PKCS#11 has limited functionality,
1838 lacks automated tests and has scarce documentation. Also, PSA Crypto
1839 provides a more flexible private key management.
1840 More details on PCKS#11 wrapper removal can be found in the mailing list
1841 https://lists.trustedfirmware.org/pipermail/mbed-tls/2020-April/000024.html
1842 * Remove deprecated error codes. Fix #4283
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001843 * Remove MBEDTLS_ENABLE_WEAK_CIPHERSUITES configuration option. Fixes #4416.
1844 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
1845 compile-time option. This option has been inactive for a long time.
1846 Please use the `lifetime` parameter of `mbedtls_ssl_ticket_setup()`
1847 instead.
1848 * Remove the following deprecated functions and constants of hex-encoded
1849 primes based on RFC 5114 and RFC 3526 from library code and tests:
1850 mbedtls_aes_encrypt(), mbedtls_aes_decrypt(), mbedtls_mpi_is_prime(),
1851 mbedtls_cipher_auth_encrypt(), mbedtls_cipher_auth_decrypt(),
1852 mbedtls_ctr_drbg_update(), mbedtls_hmac_drbg_update(),
1853 mbedtls_ecdsa_write_signature_det(), mbedtls_ecdsa_sign_det(),
1854 mbedtls_ssl_conf_dh_param(), mbedtls_ssl_get_max_frag_len(),
1855 MBEDTLS_DHM_RFC5114_MODP_2048_P, MBEDTLS_DHM_RFC5114_MODP_2048_G,
1856 MBEDTLS_DHM_RFC3526_MODP_2048_P, MBEDTLS_DHM_RFC3526_MODP_2048_G,
1857 MBEDTLS_DHM_RFC3526_MODP_3072_P, MBEDTLS_DHM_RFC3526_MODP_3072_G,
1858 MBEDTLS_DHM_RFC3526_MODP_4096_P, MBEDTLS_DHM_RFC3526_MODP_4096_G.
1859 Remove the deprecated file: include/mbedtls/net.h. Fixes #4282.
1860 * Remove MBEDTLS_SSL_MAX_CONTENT_LEN configuration option, since
1861 MBEDTLS_SSL_IN_CONTENT_LEN and MBEDTLS_SSL_OUT_CONTENT_LEN replace
1862 it. Fixes #4362.
1863 * Remove the MBEDTLS_SSL_RECORD_CHECKING option and enable by default its
1864 previous action. Fixes #4361.
1865 * Remove support for TLS 1.0, TLS 1.1 and DTLS 1.0, as well as support for
1866 CBC record splitting, fallback SCSV, and the ability to configure
1867 ciphersuites per version, which are no longer relevant. This removes the
1868 configuration options MBEDTLS_SSL_PROTO_TLS1,
1869 MBEDTLS_SSL_PROTO_TLS1_1, MBEDTLS_SSL_CBC_RECORD_SPLITTING and
1870 MBEDTLS_SSL_FALLBACK_SCSV as well as the functions
1871 mbedtls_ssl_conf_cbc_record_splitting(),
1872 mbedtls_ssl_get_key_exchange_md_ssl_tls(), mbedtls_ssl_conf_fallback(),
1873 and mbedtls_ssl_conf_ciphersuites_for_version(). Fixes #4286.
1874 * The RSA module no longer supports private-key operations with the public
1875 key and vice versa.
1876 * Remove the MBEDTLS_SSL_DTLS_BADMAC_LIMIT config.h option. Fixes #4403.
1877 * Remove all the 3DES ciphersuites:
1878 MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
1879 MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
1880 MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
1881 MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
1882 MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
1883 MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
1884 MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA,
1885 MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
1886 MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA. Remove the
1887 MBEDTLS_REMOVE_3DES_CIPHERSUITES option which is no longer relevant.
1888 Fixes #4367.
1889 * Remove the MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 option and let the code
1890 behave as if it was always disabled. Fixes #4386.
1891 * Remove MBEDTLS_ECDH_LEGACY_CONTEXT config option since this was purely for
1892 backward compatibility which is no longer supported. Addresses #4404.
1893 * Remove the following macros: MBEDTLS_CHECK_PARAMS,
1894 MBEDTLS_CHECK_PARAMS_ASSERT, MBEDTLS_PARAM_FAILED,
1895 MBEDTLS_PARAM_FAILED_ALT. Fixes #4313.
1896 * Remove the MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION config.h
1897 option. The mbedtls_x509_crt_parse_der_with_ext_cb() is the way to go for
1898 migration path. Fixes #4378.
Dave Rodgman745e3582021-07-05 18:53:31 +01001899 * Remove the MBEDTLS_X509_CHECK_KEY_USAGE and
1900 MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE config.h options and let the code
1901 behave as if they were always enabled. Fixes #4405.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001902 * MBEDTLS_ECP_MAX_BITS is no longer a configuration option because it is
1903 now determined automatically based on supported curves.
Dave Rodgman745e3582021-07-05 18:53:31 +01001904 * Remove the following functions: mbedtls_timing_self_test(),
1905 mbedtls_hardclock_poll(), mbedtls_timing_hardclock() and
1906 mbedtls_set_alarm(). Fixes #4083.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001907 * The configuration option MBEDTLS_ECP_NO_INTERNAL_RNG has been removed as
1908 it no longer had any effect.
Dave Rodgman745e3582021-07-05 18:53:31 +01001909 * Remove all support for MD2, MD4, RC4, Blowfish and XTEA. This removes the
1910 corresponding modules and all their APIs and related configuration
1911 options. Fixes #4084.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001912 * Remove MBEDTLS_SSL_TRUNCATED_HMAC and also remove
1913 MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT config option. Users are better served by
1914 using a CCM-8 ciphersuite than a CBC ciphersuite with truncated HMAC.
1915 See issue #4341 for more details.
1916 * Remove the compile-time option
1917 MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001918
1919Features
1920 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
1921 signature with a specific salt length. This function allows to validate
1922 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
1923 Meuter in PR #3183.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001924 * Added support for built-in driver keys through the PSA opaque crypto
1925 driver interface. Refer to the documentation of
1926 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
1927 * Implement psa_sign_message() and psa_verify_message().
1928 * The multi-part GCM interface (mbedtls_gcm_update() or
1929 mbedtls_cipher_update()) no longer requires the size of partial inputs to
1930 be a multiple of 16.
1931 * The multi-part GCM interface now supports chunked associated data through
1932 multiple calls to mbedtls_gcm_update_ad().
1933 * The new function mbedtls_mpi_random() generates a random value in a
1934 given range uniformly.
1935 * Alternative implementations of the AES, DHM, ECJPAKE, ECP, RSA and timing
1936 modules had undocumented constraints on their context types. These
1937 constraints have been relaxed.
1938 See docs/architecture/alternative-implementations.md for the remaining
1939 constraints.
1940 * The new functions mbedtls_dhm_get_len() and mbedtls_dhm_get_bitlen()
1941 query the size of the modulus in a Diffie-Hellman context.
1942 * The new function mbedtls_dhm_get_value() copy a field out of a
1943 Diffie-Hellman context.
1944 * Use the new function mbedtls_ecjpake_set_point_format() to select the
1945 point format for ECJPAKE instead of accessing the point_format field
1946 directly, which is no longer supported.
1947 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
1948 PSA Cryptograpy API 1.0.0 specification.
1949
1950Security
Dave Rodgman5b13f602021-07-05 18:09:16 +01001951 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
1952 private keys and of blinding values for DHM and elliptic curves (ECP)
1953 computations. Reported by FlorianF89 in #4245.
1954 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
1955 An adversary who is capable of very precise timing measurements could
1956 learn partial information about the leading bits of the nonce used for the
1957 signature, allowing the recovery of the private key after observing a
1958 large number of signature operations. This completes a partial fix in
1959 Mbed TLS 2.20.0.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001960 * Fix an issue where an adversary with access to precise enough information
1961 about memory accesses (typically, an untrusted operating system attacking
1962 a secure enclave) could recover an RSA private key after observing the
1963 victim performing a single private-key operation. Found and reported by
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001964 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001965 * Fix an issue where an adversary with access to precise enough timing
1966 information (typically, a co-located process) could recover a Curve25519
1967 or Curve448 static ECDH key after inputting a chosen public key and
1968 observing the victim performing the corresponding private-key operation.
1969 Found and reported by Leila Batina, Lukas Chmielewski, Björn Haase, Niels
1970 Samwel and Peter Schwabe.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001971
1972Bugfix
1973 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
1974 lead to the seed file corruption in case if the path to the seed file is
1975 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
1976 Krasnoshchok in #3616.
1977 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
1978 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
1979 to create is not valid, bringing them in line with version 1.0.0 of the
1980 specification. Fix #4271.
1981 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
1982 get printf format specifier warnings.
1983 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
1984 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
1985 in line with version 1.0.0 of the specification. Fix #4162.
1986 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
1987 zero. Fixes #1792
Gilles Peskinef4998b02021-06-10 15:51:54 +02001988 * Fix some cases in the bignum module where the library constructed an
1989 unintended representation of the value 0 which was not processed
1990 correctly by some bignum operations. This could happen when
1991 mbedtls_mpi_read_string() was called on "-0", or when
1992 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
1993 the arguments being negative and the other being 0. Fixes #4643.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001994 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
1995 defined. Fixes #4217.
1996 * Fix an incorrect error code when parsing a PKCS#8 private key.
1997 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
1998 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
1999 minimum size was rounded down to the nearest multiple of 8.
2000 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
2001 defined to specific values. If the code is used in a context
2002 where these are already defined, this can result in a compilation
2003 error. Instead, assume that if they are defined, the values will
2004 be adequate to build Mbed TLS.
2005 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
2006 nonetheless, resulting in undefined reference errors when building a
2007 shared library. Reported by Guillermo Garcia M. in #4411.
2008 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
2009 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
2010 was disabled. Fix the dependency. Fixes #4472.
2011 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
2012 * Fix test suite code on platforms where int32_t is not int, such as
2013 Arm Cortex-M. Fixes #4530.
2014 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
2015 directive in a header and a missing initialization in the self-test.
2016 * Fix a missing initialization in the Camellia self-test, affecting
2017 MBEDTLS_CAMELLIA_ALT implementations.
2018 * Restore the ability to configure PSA via Mbed TLS options to support RSA
2019 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
2020 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
2021 Fixes #4512.
2022 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
2023 (when the encrypt-then-MAC extension is not in use) with some ALT
2024 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
2025 the affected side to wrongly reject valid messages. Fixes #4118.
2026 * Remove outdated check-config.h check that prevented implementing the
2027 timing module on Mbed OS. Fixes #4633.
2028 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
2029 about missing inputs.
2030 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
2031 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
2032 * Fix a resource leak in a test suite with an alternative AES
2033 implementation. Fixes #4176.
2034 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
2035 could notably be triggered by setting the TLS debug level to 3 or above
2036 and using a Montgomery curve for the key exchange. Reported by lhuang04
2037 in #4578. Fixes #4608.
2038 * psa_verify_hash() was relying on implementation-specific behavior of
2039 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
2040 implementations. This reliance is now removed. Fixes #3990.
2041 * Disallow inputs of length different from the corresponding hash when
2042 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
2043 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
2044 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
2045 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
2046 could not be triggered by code that constructed A with one of the
2047 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
2048 those always built an mpi object with at least one limb.
2049 Credit to OSS-Fuzz. Fixes #4641.
2050 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
2051 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
2052 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
2053 * The PSA API no longer allows the creation or destruction of keys with a
2054 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
2055 can now only be used as intended, for keys that cannot be modified through
2056 normal use of the API.
2057 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
2058 in all the right places. Include it from crypto_platform.h, which is
2059 the natural place. Fixes #4649.
2060 * Fix which alert is sent in some cases to conform to the
2061 applicable RFC: on an invalid Finished message value, an
2062 invalid max_fragment_length extension, or an
2063 unsupported extension used by the server.
Dave Rodgmana84a8eb2021-07-01 17:01:04 +01002064 * Correct (change from 12 to 13 bytes) the value of the macro describing the
2065 maximum nonce length returned by psa_aead_generate_nonce().
Dave Rodgman10ba5532021-04-26 14:58:26 +01002066
2067Changes
2068 * Fix the setting of the read timeout in the DTLS sample programs.
2069 * Add extra printf compiler warning flags to builds.
2070 * Fix memsan build false positive in x509_crt.c with clang 11
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01002071 * Alternative implementations of CMAC may now opt to not support 3DES as a
2072 CMAC block cipher, and still pass the CMAC self test.
2073 * Remove the AES sample application programs/aes/aescrypt2 which shows
2074 bad cryptographic practice. Fix #1906.
2075 * Remove configs/config-psa-crypto.h, which no longer had any intended
2076 differences from the default configuration, but had accidentally diverged.
2077 * When building the test suites with GNU make, invoke python3 or python, not
2078 python2, which is no longer supported upstream.
2079 * fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
2080 When that flag is on, standard GNU C printf format specifiers
2081 should be used.
2082 * Replace MBEDTLS_SSL_CID_PADDING_GRANULARITY and
2083 MBEDTLS_SSL_TLS1_3_PADDING_GRANULARITY with a new single unified option
2084 MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY. Fixes #4335.
2085 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
2086 during ECC operations at a negligible performance cost.
2087 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
2088 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
2089 when their input has length 0. Note that this is an implementation detail
2090 and can change at any time, so this change should be transparent, but it
2091 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
2092 now writing an empty string where it previously wrote one or more
2093 zero digits when operating from values constructed with an mpi_read
2094 function and some mpi operations.
2095 * Add CMake package config generation for CMake projects consuming Mbed TLS.
2096 * config.h has been split into build_info.h and mbedtls_config.h
2097 build_info.h is intended to be included from C code directly, while
2098 mbedtls_config.h is intended to be edited by end users wishing to
2099 change the build configuration, and should generally only be included from
2100 build_info.h.
2101 * The handling of MBEDTLS_CONFIG_FILE has been moved into build_info.h.
2102 * A config file version symbol, MBEDTLS_CONFIG_VERSION was introduced.
2103 Defining it to a particular value will ensure that Mbed TLS interprets
2104 the config file in a way that's compatible with the config file format
2105 used by the Mbed TLS release whose MBEDTLS_VERSION_NUMBER has the same
2106 value.
2107 The only value supported by Mbed TLS 3.0.0 is 0x03000000.
2108 * Various changes to which alert and/or error code may be returned
2109 * during the TLS handshake.
2110 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
2111 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
2112 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
2113 is also applied when loading a key from storage.
Dave Rodgman10ba5532021-04-26 14:58:26 +01002114
Dave Rodgman74755e42021-03-08 18:35:44 +00002115= mbed TLS 2.26.0 branch released 2021-03-08
2116
2117API changes
2118 * Renamed the PSA Crypto API output buffer size macros to bring them in line
2119 with version 1.0.0 of the specification.
2120 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
2121 in bits rather than bytes, with an additional flag to indicate if the
2122 size may have been rounded up to a whole number of bytes.
2123 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
2124 with version 1.0.0 of the specification.
2125
2126Default behavior changes
2127 * In mbedtls_rsa_context objects, the ver field was formerly documented
2128 as always 0. It is now reserved for internal purposes and may take
2129 different values.
2130
2131New deprecations
2132 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
2133 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
2134 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
2135 deprecated.
2136 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
2137 have been renamed, and the old names deprecated.
2138
2139Features
2140 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
2141 CTR_DRBG is used by default if it is available, but you can override
2142 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
2143 Fix #3354.
2144 * Automatic fallback to a software implementation of ECP when
2145 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
2146 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
2147 * The PSA crypto subsystem can now be configured to use less static RAM by
2148 tweaking the setting for the maximum amount of keys simultaneously in RAM.
2149 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
2150 can exist simultaneously. It has a sensible default if not overridden.
2151 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
2152 now use an external random generator instead of the library's own
2153 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
2154 and see the documentation of mbedtls_psa_external_get_random() for details.
2155 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
2156 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
2157 random generator with mbedtls_xxx functions. See the documentation of
2158 mbedtls_psa_get_random() for details.
2159 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
2160 minimum MAC or tag length thanks to the new wildcards
2161 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
2162 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
2163
2164Security
2165 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
2166 nonce from entropy. Applications were affected if they called
2167 mbedtls_ctr_drbg_set_nonce_len(), if they called
2168 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
2169 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
2170 In such cases, a random nonce was necessary to achieve the advertised
2171 security strength, but the code incorrectly used a constant instead of
2172 entropy from the nonce.
2173 Found by John Stroebel in #3819 and fixed in #3973.
2174 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
2175 |A| - |B| where |B| is larger than |A| and has more limbs (so the
2176 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
2177 applications calling mbedtls_mpi_sub_abs() directly are affected:
2178 all calls inside the library were safe since this function is
2179 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
2180 * Fix an errorneous estimation for an internal buffer in
2181 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
2182 value the function might fail to write a private RSA keys of the largest
2183 supported size.
2184 Found by Daniel Otte, reported in #4093 and fixed in #4094.
2185 * Fix a stack buffer overflow with mbedtls_net_poll() and
2186 mbedtls_net_recv_timeout() when given a file descriptor that is
2187 beyond FD_SETSIZE. Reported by FigBug in #4169.
2188 * Guard against strong local side channel attack against base64 tables by
2189 making access aceess to them use constant flow code.
2190
2191Bugfix
2192 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
2193 * Fix memory leak that occured when calling psa_close_key() on a
2194 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
2195 * Fix an incorrect error code if an RSA private operation glitched.
2196 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
2197 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
2198 is enabled, on platforms where initializing a mutex allocates resources.
2199 This was a regression introduced in the previous release. Reported in
2200 #4017, #4045 and #4071.
2201 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
2202 twice is safe. This happens for RSA when some Mbed TLS library functions
2203 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
2204 enabled on platforms where freeing a mutex twice is not safe.
2205 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
2206 when MBEDTLS_THREADING_C is enabled on platforms where initializing
2207 a mutex allocates resources.
2208 * Fixes a bug where, if the library was configured to include support for
2209 both the old SE interface and the new PSA driver interface, external keys were
2210 not loaded from storage. This was fixed by #3996.
2211 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
2212 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
2213 include this extension in all CA certificates that contain public keys
2214 used to validate digital signatures on certificates and MUST mark the
2215 extension as critical in such certificates." Previous to this change,
2216 the extension was always marked as non-critical. This was fixed by
2217 #3698.
2218
2219Changes
2220 * A new library C file psa_crypto_client.c has been created to contain
2221 the PSA code needed by a PSA crypto client when the PSA crypto
2222 implementation is not included into the library.
2223 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
2224 now uses the getrandom syscall instead of reading from /dev/urandom.
2225
Janos Follath56b38c22020-12-09 01:34:21 +00002226= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +00002227
2228API changes
2229 * The numerical values of the PSA Crypto API macros have been updated to
2230 conform to version 1.0.0 of the specification.
2231 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
2232 The underlying stream cipher is determined by the key type
2233 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
2234 * The functions mbedtls_cipher_auth_encrypt() and
2235 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
2236 as they have no way to check if the output buffer is large enough.
2237 Please use mbedtls_cipher_auth_encrypt_ext() and
2238 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
2239 Cryptofuzz. Fixes #3665.
2240
2241Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +00002242 * Update the minimum required CMake version to 2.8.12. This silences a
2243 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +00002244
2245New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +01002246 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002247 Use PSA_ALG_STREAM_CIPHER instead.
2248 * The functions mbedtls_cipher_auth_encrypt() and
2249 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
2250 functions mbedtls_cipher_auth_encrypt_ext() and
2251 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
2252 these new functions always append the tag to the ciphertext, and include
2253 the tag in the ciphertext length.
2254
2255Features
Janos Follathd6ce1162020-12-09 16:32:01 +00002256 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
2257 ciphers, asymmetric signing/verification and key generation, validate_key
2258 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +00002259 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002260 * In PSA, allow using a key declared with a base key agreement algorithm
2261 in combined key agreement and derivation operations, as long as the key
2262 agreement algorithm in use matches the algorithm the key was declared with.
2263 This is currently non-standard behaviour, but expected to make it into a
2264 future revision of the PSA Crypto standard.
2265 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
2266 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
2267 external CMake projects that include this one to avoid CMake target name
2268 clashes. The default value of this variable is "", so default target names
2269 are unchanged.
2270 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
2271 Pascal, improved by Ron Eldor.
2272 * In the PSA API, it is no longer necessary to open persistent keys:
2273 operations now accept the key identifier. The type psa_key_handle_t is now
2274 identical to psa_key_id_t instead of being platform-defined. This bridges
2275 the last major gap to compliance with the PSA Cryptography specification
2276 version 1.0.0. Opening persistent keys is still supported for backward
2277 compatibility, but will be deprecated and later removed in future
2278 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002279 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
2280 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
2281 1.0.0 of the PSA Crypto API specification.
2282
2283Security
2284 * The functions mbedtls_cipher_auth_encrypt() and
2285 mbedtls_cipher_auth_decrypt() would write past the minimum documented
2286 size of the output buffer when used with NIST_KW. As a result, code using
2287 those functions as documented with NIST_KW could have a buffer overwrite
2288 of up to 15 bytes, with consequences ranging up to arbitrary code
2289 execution depending on the location of the output buffer.
2290 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
2291 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
2292 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
2293 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
2294 which is how most uses of randomization in asymmetric cryptography
2295 (including key generation, intermediate value randomization and blinding)
2296 are implemented. This could cause failures or the silent use of non-random
2297 values. A random generator can fail if it needs reseeding and cannot not
2298 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
2299 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
2300 * Fix a compliance issue whereby we were not checking the tag on the
2301 algorithm parameters (only the size) when comparing the signature in the
2302 description part of the cert to the real signature. This meant that a
2303 NULL algorithm parameters entry would look identical to an array of REAL
2304 (size zero) to the library and thus the certificate would be considered
2305 valid. However, if the parameters do not match in *any* way then the
2306 certificate should be considered invalid, and indeed OpenSSL marks these
2307 certs as invalid when mbedtls did not.
2308 Many thanks to guidovranken who found this issue via differential fuzzing
2309 and reported it in #3629.
2310 * Zeroising of local buffers and variables which are used for calculations
2311 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
2312 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
2313 functions to erase sensitive data from memory. Reported by
2314 Johan Malmgren and Johan Uppman Bruce from Sectra.
2315
2316Bugfix
Janos Follath76027f62020-12-09 16:28:35 +00002317 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
2318 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002319 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
2320 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
2321 * Include the psa_constant_names generated source code in the source tree
2322 instead of generating it at build time. Fixes #3524.
2323 * Fix rsa_prepare_blinding() to retry when the blinding value is not
2324 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
2325 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
2326 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
2327 Fixes #3647.
2328 * Use socklen_t on Android and other POSIX-compliant system
2329 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
2330 Fix #3432.
2331 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
2332 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
2333 psa_cipher_* functions compliant with the PSA Crypto API specification.
2334 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
2335 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
2336 only the curves that support ECDSA, filter the list with
2337 mbedtls_ecdsa_can_do().
2338 * Fix psa_generate_key() returning an error when asked to generate
2339 an ECC key pair on Curve25519 or secp244k1.
2340 * Fix psa_key_derivation_output_key() to allow the output of a combined key
2341 agreement and subsequent key derivation operation to be used as a key
2342 inside of the PSA Crypto core.
2343 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
2344 chars. Fixes a build failure on platforms where char is unsigned. Fixes
2345 #3794.
2346 * Fix an off-by-one error in the additional data length check for
2347 CCM, which allowed encryption with a non-standard length field.
2348 Fixes #3719.
2349 * Correct the default IV size for mbedtls_cipher_info_t structures using
2350 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
2351 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
2352 defined. Fix contributed in #3571.
2353 * Fix conditions for including string.h in error.c. Fixes #3866.
2354 * psa_set_key_id() now also sets the lifetime to persistent for keys located
2355 in a secure element.
2356 * Attempting to create a volatile key with a non-zero key identifier now
2357 fails. Previously the key identifier was just ignored when creating a
2358 volatile key.
2359 * Attempting to create or register a key with a key identifier in the vendor
2360 range now fails.
2361 * Fix build failures on GCC 11. Fixes #3782.
2362 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
2363 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
2364 (an error condition) and the second operand was aliased to the result.
2365 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
2366 could go undetected, resulting in an incorrect result.
2367 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
2368 Fixes #2927.
2369 * In PEM writing functions, fill the trailing part of the buffer with null
2370 bytes. This guarantees that the corresponding parsing function can read
2371 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
2372 until this property was inadvertently broken in Mbed TLS 2.19.0.
2373 Fixes #3682.
2374 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
2375 option on. In this configuration key management methods that are required
2376 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
2377 Fixes #3818. Reported by John Stroebel.
2378
2379Changes
2380 * Reduce stack usage significantly during sliding window exponentiation.
2381 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
2382 * The PSA persistent storage format is updated to always store the key bits
2383 attribute. No automatic upgrade path is provided. Previously stored keys
2384 must be erased, or manually upgraded based on the key storage format
2385 specification (docs/architecture/mbed-crypto-storage-specification.md).
2386 Fixes #3740.
2387 * Remove the zeroization of a pointer variable in AES rounds. It was valid
2388 but spurious and misleading since it looked like a mistaken attempt to
2389 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
2390 Leti, France.
2391
Janos Follath6012f0e2020-08-26 15:32:10 +01002392= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +01002393
2394API changes
Janos Follath6012f0e2020-08-26 15:32:10 +01002395 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
2396 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
2397 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +01002398 Rename associated macros as well:
2399 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
2400 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
2401 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
2402 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
2403
2404Default behavior changes
2405 * Stop storing persistent information about externally stored keys created
2406 through PSA Crypto with a volatile lifetime. Reported in #3288 and
2407 contributed by Steven Cooreman in #3382.
2408
2409Features
2410 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
2411 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
2412 * Support building on e2k (Elbrus) architecture: correctly enable
2413 -Wformat-signedness, and fix the code that causes signed-one-bit-field
2414 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
2415 <akemi_homura@kurisa.ch>.
2416
2417Security
2418 * Fix a vulnerability in the verification of X.509 certificates when
2419 matching the expected common name (the cn argument of
2420 mbedtls_x509_crt_verify()) with the actual certificate name: when the
2421 subjecAltName extension is present, the expected name was compared to any
2422 name in that extension regardless of its type. This means that an
2423 attacker could for example impersonate a 4-bytes or 16-byte domain by
2424 getting a certificate for the corresponding IPv4 or IPv6 (this would
2425 require the attacker to control that IP address, though). Similar attacks
2426 using other subjectAltName name types might be possible. Found and
2427 reported by kFYatek in #3498.
2428 * When checking X.509 CRLs, a certificate was only considered as revoked if
2429 its revocationDate was in the past according to the local clock if
2430 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
2431 certificates were never considered as revoked. On builds with
2432 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
2433 example, an untrusted OS attacking a secure enclave) could prevent
2434 revocation of certificates via CRLs. Fixed by no longer checking the
2435 revocationDate field, in accordance with RFC 5280. Reported by
2436 yuemonangong in #3340. Reported independently and fixed by
2437 Raoul Strackx and Jethro Beekman in #3433.
2438 * In (D)TLS record decryption, when using a CBC ciphersuites without the
2439 Encrypt-then-Mac extension, use constant code flow memory access patterns
2440 to extract and check the MAC. This is an improvement to the existing
2441 countermeasure against Lucky 13 attacks. The previous countermeasure was
2442 effective against network-based attackers, but less so against local
2443 attackers. The new countermeasure defends against local attackers, even
2444 if they have access to fine-grained measurements. In particular, this
2445 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
2446 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
2447 (University of Florida) and Dave Tian (Purdue University).
2448 * Fix side channel in RSA private key operations and static (finite-field)
2449 Diffie-Hellman. An adversary with precise enough timing and memory access
2450 information (typically an untrusted operating system attacking a secure
2451 enclave) could bypass an existing counter-measure (base blinding) and
2452 potentially fully recover the private key.
2453 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
2454 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
2455 for pinpointing the problematic code.
2456 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
2457 application data from memory. Reported in #689 by
2458 Johan Uppman Bruce of Sectra.
2459
2460Bugfix
2461 * Library files installed after a CMake build no longer have execute
2462 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +01002463 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
2464 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +01002465 Reported in #3451 and fix contributed in #3452 by okhowang.
2466 * Fix the endianness of Curve25519 keys imported/exported through the PSA
2467 APIs. psa_import_key and psa_export_key will now correctly expect/output
2468 Montgomery keys in little-endian as defined by RFC7748. Contributed by
2469 Steven Cooreman in #3425.
2470 * Fix build errors when the only enabled elliptic curves are Montgomery
2471 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
2472 also fixes missing declarations reported by Steven Cooreman in #1147.
2473 * Fix self-test failure when the only enabled short Weierstrass elliptic
2474 curve is secp192k1. Fixes #2017.
2475 * PSA key import will now correctly import a Curve25519/Curve448 public key
2476 instead of erroring out. Contributed by Steven Cooreman in #3492.
2477 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
2478 lower bits. Fix contributed in #3540.
2479 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
2480 conditions. Reported and fix suggested by Guido Vranken in #3486.
2481 * Fix bug in redirection of unit test outputs on platforms where stdout is
2482 defined as a macro. First reported in #2311 and fix contributed in #3528.
2483
2484Changes
2485 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
2486 in #3478 and fix contributed in #3479 by okhowang.
2487 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
2488 previously could lead to stack overflow on constrained devices.
2489 Contributed by Doru Gucea and Simon Leet in #3464.
2490 * Undefine the ASSERT macro before defining it locally, in case it is defined
2491 in a platform header. Contributed by Abdelatif Guettouche in #3557.
2492 * Update copyright notices to use Linux Foundation guidance. As a result,
2493 the copyright of contributors other than Arm is now acknowledged, and the
2494 years of publishing are no longer tracked in the source files. This also
2495 eliminates the need for the lines declaring the files to be part of
2496 MbedTLS. Fixes #3457.
2497 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
2498 example applications which allows to provide a password for the key file
2499 specified through the existing key_file argument. This allows the use of
2500 these applications with password-protected key files. Analogously but for
2501 ssl_server2 only, add the command line parameter key_pwd2 which allows to
2502 set a password for the key file provided through the existing key_file2
2503 argument.
2504
Janos Follath13cba682020-06-26 12:40:52 +01002505= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +01002506
2507Default behavior changes
2508 * In the experimental PSA secure element interface, change the encoding of
2509 key lifetimes to encode a persistence level and the location. Although C
2510 prototypes do not effectively change, code calling
2511 psa_register_se_driver() must be modified to pass the driver's location
2512 instead of the keys' lifetime. If the library is upgraded on an existing
2513 device, keys created with the old lifetime value will not be readable or
2514 removable through Mbed TLS after the upgrade.
2515
2516Features
2517 * New functions in the error module return constant strings for
2518 high- and low-level error codes, complementing mbedtls_strerror()
2519 which constructs a string for any error code, including compound
2520 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
2521 in #3176.
2522 * The new utility programs/ssl/ssl_context_info prints a human-readable
2523 dump of an SSL context saved with mbedtls_ssl_context_save().
2524 * Add support for midipix, a POSIX layer for Microsoft Windows.
2525 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
2526 parsing unsupported certificate extensions via user provided callback.
2527 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
2528 a solution to #3241.
2529 * Pass the "certificate policies" extension to the callback supplied to
2530 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
2531 policies (#3419).
2532 * Added support to entropy_poll for the kern.arandom syscall supported on
2533 some BSD systems. Contributed by Nia Alarie in #3423.
2534 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
2535
2536Security
2537 * Fix a side channel vulnerability in modular exponentiation that could
2538 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
2539 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
2540 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
2541 Strackx (Fortanix) in #3394.
2542 * Fix side channel in mbedtls_ecp_check_pub_priv() and
2543 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
2544 private key that didn't include the uncompressed public key), as well as
2545 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
2546 f_rng argument. An attacker with access to precise enough timing and
2547 memory access information (typically an untrusted operating system
2548 attacking a secure enclave) could fully recover the ECC private key.
2549 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
2550 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
2551 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
2552 macros). This would cause the original Lucky 13 attack to be possible in
2553 those configurations, allowing an active network attacker to recover
2554 plaintext after repeated timing measurements under some conditions.
2555 Reported and fix suggested by Luc Perneel in #3246.
2556
2557Bugfix
2558 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
2559 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
2560 the example programs. Reported in #1430 and fix contributed by irwir.
2561 * Fix undefined behavior in X.509 certificate parsing if the
2562 pathLenConstraint basic constraint value is equal to INT_MAX.
2563 The actual effect with almost every compiler is the intended
2564 behavior, so this is unlikely to be exploitable anywhere. #3192
2565 * Fix issue with a detected HW accelerated record error not being exposed
2566 due to shadowed variable. Contributed by Sander Visser in #3310.
2567 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
2568 NULL pointer argument. Contributed by Sander Visser in #3312.
2569 * Fix potential linker errors on dual world platforms by inlining
2570 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
2571 from psa_crypto.c. Fixes #3300.
2572 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
2573 #2855.
2574 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
2575 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
2576 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
2577 * Remove unused macros from MSVC projects. Reported in #3297 and fix
2578 submitted in #3333 by irwir.
2579 * Add additional bounds checks in ssl_write_client_hello() preventing
2580 output buffer overflow if the configuration declared a buffer that was
2581 too small.
2582 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
2583 fix submitted in #3421 by Nia Alarie.
2584 * Fix building library/net_sockets.c and the ssl_mail_client program on
2585 NetBSD. Contributed by Nia Alarie in #3422.
2586 * Fix false positive uninitialised variable reported by cpp-check.
2587 Contributed by Sander Visser in #3311.
2588 * Update iv and len context pointers manually when reallocating buffers
2589 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
2590 when receiving a connection with CID, when these fields were shifted
2591 in ssl_parse_record_header().
2592
2593Changes
2594 * Fix warnings about signedness issues in format strings. The build is now
2595 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
2596 in #3153.
2597 * Fix minor performance issue in operations on Curve25519 caused by using a
2598 suboptimal modular reduction in one place. Found and fix contributed by
2599 Aurelien Jarno in #3209.
2600 * Combine identical cases in switch statements in md.c. Contributed
2601 by irwir in #3208.
2602 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
2603 by irwir in #3150.
2604 * Unify the example programs termination to call mbedtls_exit() instead of
2605 using a return command. This has been done to enable customization of the
2606 behavior in bare metal environments.
2607 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
2608 Contributed by Koh M. Nakagawa in #3326.
2609 * Use FindPython3 when cmake version >= 3.15.0
2610 * Abort the ClientHello writing function as soon as some extension doesn't
2611 fit into the record buffer. Previously, such extensions were silently
2612 dropped. As a consequence, the TLS handshake now fails when the output
2613 buffer is not large enough to hold the ClientHello.
2614 * The unit tests now rely on header files in tests/include/test and source
2615 files in tests/src. When building with make or cmake, the files in
2616 tests/src are compiled and the resulting object linked into each test
2617 executable.
2618 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
2619 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
2620 coutermeasures. If side channels are not a concern, this dependency can
2621 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
2622 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
2623 Martinho. #3147
2624 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
2625 in #3182 and fix submitted by irwir. #3217
2626 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
2627
Janos Follath876e0252020-04-08 17:15:18 +01002628= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00002629
2630New deprecations
2631 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
2632 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04002633 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
2634 mbedtls_ssl_get_output_max_frag_len() and
2635 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
2636 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00002637
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01002638Security
2639 * Fix issue in DTLS handling of new associations with the same parameters
2640 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
2641 the server could cause it to drop established associations with
2642 legitimate clients, resulting in a Denial of Service. This could only
2643 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
2644 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01002645 * Fix side channel in ECC code that allowed an adversary with access to
2646 precise enough timing and memory access information (typically an
2647 untrusted operating system attacking a secure enclave) to fully recover
2648 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
2649 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02002650 * Fix a potentially remotely exploitable buffer overread in a
2651 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01002652
Janos Follathee856862020-04-08 16:58:36 +01002653Features
2654 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
2655 resizes the I/O buffers before and after handshakes, reducing the memory
2656 consumption during application data transfer.
2657
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01002658Bugfix
2659 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
2660 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03002661 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
2662 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01002663 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
2664 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01002665
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002666Changes
2667 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
2668 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04002669 * Split mbedtls_ssl_get_max_frag_len() into
2670 mbedtls_ssl_get_output_max_frag_len() and
2671 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
2672 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
2673 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002674
Janos Follath138c2ea2020-02-19 14:32:24 +00002675= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00002676
Andres Amaya Garcia09634242018-11-29 09:55:41 +00002677New deprecations
2678 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
2679 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00002680 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01002681 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
2682 library which allows TLS authentication to use keys stored in a
2683 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00002684
Gilles Peskinef142d4c2020-02-11 19:05:03 +01002685Security
2686 * Fix potential memory overread when performing an ECDSA signature
2687 operation. The overread only happens with cryptographically low
2688 probability (of the order of 2^-n where n is the bitsize of the curve)
2689 unless the RNG is broken, and could result in information disclosure or
2690 denial of service (application crash or extra resource consumption).
2691 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01002692 * To avoid a side channel vulnerability when parsing an RSA private key,
2693 read all the CRT parameters from the DER structure rather than
2694 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
2695 Brumley. Reported and fix contributed by Jack Lloyd.
2696 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01002697
2698Features
2699 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
2700 support without SHA-384.
2701
2702API changes
2703 * Change the encoding of key types and curves in the PSA API. The new
2704 values are aligned with the upcoming release of the PSA Crypto API
2705 specification version 1.0.0. The main change which may break some
2706 existing code is that elliptic curve key types no longer encode the
2707 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
2708 a curve family and the key size determines the exact curve (for example,
2709 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
2710
Jaeden Amero62236d72020-01-24 18:20:22 +00002711Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01002712 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01002713 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
2714 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01002715 * Fix some false-positive uninitialized variable warnings in X.509. Fix
2716 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01002717 * Fix a possible error code mangling in psa_mac_verify_finish() when
2718 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00002719 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
2720 RSA keys that would later be rejected by functions expecting private
2721 keys. Found by Catena cyber using oss-fuzz (issue 20467).
2722 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
2723 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00002724
Jaeden Amerod56a2af2020-01-15 18:07:20 +00002725= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03002726
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002727Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002728 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002729 entropy function to obtain entropy for a nonce if the entropy size is less
2730 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002731 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002732 nonce length to 0.
2733
2734Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002735 * Enforce that mbedtls_entropy_func() gathers a total of
2736 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002737 default configuration, on a platform with a single entropy source, the
2738 entropy module formerly only grabbed 32 bytes, which is good enough for
2739 security if the source is genuinely strong, but less than the expected 64
2740 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01002741 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
2742 mbedtls_internal_aes_decrypt() before exiting the function. The value of
2743 these variables can be used to recover the last round key. To follow best
2744 practice and to limit the impact of buffer overread vulnerabilities (like
2745 Heartbleed) we need to zeroize them before exiting the function.
2746 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
2747 Grant Hernandez, and Kevin Butler (University of Florida) and
2748 Dave Tian (Purdue University).
2749 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
2750 constant time/constant trace, so side channel attacks can retrieve the
2751 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
2752 to have only large prime factors), and then, by brute force, recover the
2753 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
2754 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
2755 timings on the comparison in the key generation enabled the attacker to
2756 learn leading bits of the ephemeral key used during ECDSA signatures and to
2757 recover the private key. Reported by Jeremy Dubeuf.
2758 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
2759 failures could happen with alternative implementations of AES. Bug
2760 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
2761 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002762
2763Features
2764 * Key derivation inputs in the PSA API can now either come from a key object
2765 or from a buffer regardless of the step type.
2766 * The CTR_DRBG module can grab a nonce from the entropy source during the
2767 initial seeding. The default nonce length is chosen based on the key size
2768 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002769 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002770 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002771 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002772
2773API changes
2774 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
2775 key derivation function, use a buffer instead (this is now always
2776 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002777 * Rename psa_asymmetric_sign() to psa_sign_hash() and
2778 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002779
irwir6c0da642019-09-26 21:07:41 +03002780Bugfix
2781 * Fix an incorrect size in a debugging message. Reported and fix
2782 submitted by irwir. Fixes #2717.
2783 * Fix an unused variable warning when compiling without DTLS.
2784 Reported and fix submitted by irwir. Fixes #2800.
2785 * Remove a useless assignment. Reported and fix submitted by irwir.
2786 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002787 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01002788 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002789 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002790 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002791 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002792 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002793 * mbedtls_ctr_drbg_set_entropy_len() and
2794 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
2795 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002796
2797Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002798 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002799 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002800 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002801 before).
2802 * Variables containing error codes are now initialized to an error code
2803 rather than success, so that coding mistakes or memory corruption tends to
2804 cause functions to return this error code rather than a success. There are
2805 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01002806 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002807 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002808 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002809 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01002810 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002811 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002812 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03002813
Jaeden Amero914a5072019-09-18 13:35:57 +01002814= mbed TLS 2.19.1 branch released 2019-09-16
2815
2816Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06002817 * Declare include headers as PUBLIC to propagate to CMake project consumers
2818 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01002819 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
2820 TLS sessions with tools like Wireshark.
2821
2822API Changes
2823 * Make client_random and server_random const in
2824 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
2825 from modifying the client/server hello.
2826
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02002827Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01002828 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02002829 contributed by apple-ihack-geek in #2663.
2830
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002831= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002832
Gilles Peskine52157832018-08-11 00:51:04 +02002833Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002834 * Fix a missing error detection in ECJPAKE. This could have caused a
2835 predictable shared secret if a hardware accelerator failed and the other
2836 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02002837 * When writing a private EC key, use a constant size for the private
2838 value, as specified in RFC 5915. Previously, the value was written
2839 as an ASN.1 INTEGER, which caused the size of the key to leak
2840 about 1 bit of information on average and could cause the value to be
2841 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00002842 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
2843 implement blinding. Because of this for the same key and message the same
2844 blinding value was generated. This reduced the effectiveness of the
2845 countermeasure and leaked information about the private key through side
2846 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02002847
Jaeden Ameroc73fde72019-03-27 14:50:21 +00002848Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02002849 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02002850 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02002851 store it in non-volatile storage, and later using it for TLS session
2852 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03002853 * Add a new API function mbedtls_ssl_check_record() to allow checking that
2854 an incoming record is valid, authentic and has not been seen before. This
2855 feature can be used alongside Connection ID and SSL context serialisation.
2856 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
2857 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01002858 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
2859 (https://project-everest.github.io/). It can be enabled at compile time
2860 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
2861 verified and significantly faster, but is only supported on x86 platforms
2862 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
2863 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01002864 * Add mbedtls_net_close(), enabling the building of forking servers where
2865 the parent process closes the client socket and continue accepting, and
2866 the child process closes the listening socket and handles the client
2867 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00002868
Gilles Peskine60b29d62019-08-14 18:37:59 +02002869API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02002870 * Add DER-encoded test CRTs to library/certs.c, allowing
2871 the example programs ssl_server2 and ssl_client2 to be run
2872 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
2873 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01002874 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
2875 list all curves for which at least one of ECDH or ECDSA is supported, not
2876 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
2877 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
2878 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002879 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
2880 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
2881 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00002882
2883New deprecations
2884 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
2885 RNG function as an input.
2886 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
2887 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02002888
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002889Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01002890 * Fix missing bounds checks in X.509 parsing functions that could
2891 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
2892 * Fix multiple X.509 functions previously returning ASN.1 low-level error
2893 codes to always wrap these codes into X.509 high level error codes before
2894 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01002895 * Fix to allow building test suites with any warning that detects unused
2896 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01002897 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01002898 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01002899 * Fix build failure when building with mingw on Windows by including
2900 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01002901 * Fix Visual Studio Release x64 build configuration by inheriting
2902 PlatformToolset from the project configuration. Fixes #1430 reported by
2903 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01002904 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
2905 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02002906 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01002907 * Avoid use of statically sized stack buffers for certificate writing.
2908 This previously limited the maximum size of DER encoded certificates
2909 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04002910 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02002911 * Update test certificates that were about to expire. Reported by
2912 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02002913 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
2914 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
2915 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01002916 * Fix propagation of restart contexts in restartable EC operations.
2917 This could previously lead to segmentation faults in builds using an
2918 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01002919 * Fix memory leak in in mpi_miller_rabin(). Contributed by
2920 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06002921 * Improve code clarity in x509_crt module, removing false-positive
2922 uninitialized variable warnings on some recent toolchains (GCC8, etc).
2923 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01002924 * Fix bug in endianness conversion in bignum module. This lead to
2925 functionally incorrect code on bigendian systems which don't have
2926 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01002927
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002928Changes
Hanno Becker136512b2019-05-30 11:16:02 +01002929 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02002930 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
2931 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01002932 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06002933 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
2934 docker-env.sh) to simplify running test suites on a Linux host. Contributed
2935 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01002936 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
2937 test runs without variability. Contributed by Philippe Antoine (Catena
2938 cyber) in #2681.
2939 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02002940 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
2941 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002942 * Remove the crypto part of the library from Mbed TLS. The crypto
2943 code and tests are now only available via Mbed Crypto, which
2944 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002945
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01002946= mbed TLS 2.18.1 branch released 2019-07-12
2947
Jaeden Ameroded319d2019-05-30 13:18:24 +01002948Bugfix
2949 * Fix build failure when building with mingw on Windows by including
2950 stdarg.h where needed. Fixes #2656.
2951
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01002952Changes
2953 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
2954 Ashley Duncan in #2609.
2955
Jaeden Amerob1c72f52019-06-11 17:18:09 +01002956= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002957
Hanno Beckerac4172c2019-01-31 09:27:04 +00002958Features
2959 * Add the Any Policy certificate policy oid, as defined in
2960 rfc 5280 section 4.2.1.4.
2961 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
2962 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00002963 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
2964 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00002965 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00002966 Contributed by Jack Lloyd and Fortanix Inc.
2967 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00002968 and the used tls-prf.
2969 * Add public API for tls-prf function, according to requested enum.
2970 * Add support for parsing otherName entries in the Subject Alternative Name
2971 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00002972 as defined in RFC 4108 section 5.
2973 * Add support for parsing certificate policies extension, as defined in
2974 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
2975 supported.
2976 * List all SAN types in the subject_alt_names field of the certificate.
2977 Resolves #459.
2978 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00002979 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
2980 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00002981 lifetime of the underlying transport by adding a connection identifier
2982 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002983 incoming record with the correct connection data even after the peer has
2984 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00002985 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
2986 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
2987
Paul Bakker5121ce52009-01-03 21:22:43 +00002988
Jaeden Amero4e0db562019-08-27 11:18:28 +01002989API Changes
2990 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
2991 and the used tls-prf.
2992 * Add public API for tls-prf function, according to requested enum.
2993
Paul Bakker5121ce52009-01-03 21:22:43 +00002994Bugfix
2995 * Fix private key DER output in the key_app_writer example. File contents
2996 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
2997 Christian Walther in #2239.
2998 * Fix potential memory leak in X.509 self test. Found and fixed by
2999 Junhwan Park, #2106.
3000 * Reduce stack usage of hkdf tests. Fixes #2195.
3001 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
3002 used with negative inputs. Found by Guido Vranken in #2404. Credit to
3003 OSS-Fuzz.
3004 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
3005 either used both encrypt and decrypt key schedules, or which perform padding.
3006 GCM and CCM were not affected. Fixed by Jack Lloyd.
3007 * Fix incorrect default port number in ssl_mail_client example's usage.
3008 Found and fixed by irwir. #2337
3009 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
3010 Fixed by Peter Kolbus (Garmin). #2579
3011 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00003012 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
3013 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003014 for the parameter.
3015 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00003016 sni entry parameter. Reported by inestlerode in #560.
3017 * Set the next sequence of the subject_alt_name to NULL when deleting
3018 sequence on failure. Found and fix suggested by Philippe Antoine.
3019 Credit to OSS-Fuzz.
3020
Paul Bakker5121ce52009-01-03 21:22:43 +00003021Changes
3022 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
3023 mbedTLS configuration only SHA-2 signed certificates are accepted.
3024 This certificate is used in the demo server programs, which lead the
3025 client programs to fail at the peer's certificate verification
3026 due to an unacceptable hash signature. The certificate has been
3027 updated to one that is SHA-256 signed. Fix contributed by
3028 Illya Gerasymchuk.
3029 * Return from various debugging routines immediately if the
3030 provided SSL context is unset.
3031 * Remove dead code from bignum.c in the default configuration.
3032 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
3033 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
3034 Contributed by Peter Kolbus (Garmin).
3035 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
3036 improve clarity. Fixes #2258.
3037
3038= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00003039
3040Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003041 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
3042 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00003043 at the cost of additional lifetime constraints on the input
3044 buffer, but at the benefit of reduced RAM consumption.
3045 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
3046 named bitstring in DER as required by RFC 5280 Appendix B.
3047 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
3048 from the default list (enabled by default). See
3049 https://sweet32.info/SWEET32_CCS16.pdf.
3050
3051API Changes
3052 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003053 See the Features section for more information.
3054 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
3055 for the benefit of saving RAM, by disabling the new compile-time
3056 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
3057 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
3058 always return NULL, and removes the peer_cert field from the
3059 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01003060 certificate.
3061
3062Security
3063 * Make mbedtls_ecdh_get_params return an error if the second key
3064 belongs to a different group from the first. Before, if an application
3065 passed keys that belonged to different group, the first key's data was
3066 interpreted according to the second group, which could lead to either
3067 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003068 latter case, this could expose at most 5 bits of the private key.
3069
3070Bugfix
3071 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
3072 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
3073 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
3074 Raised as a comment in #1996.
3075 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
3076 previously lead to a stack overflow on constrained targets.
3077 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
3078 in the header files, which missed the precompilation check. #971
3079 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
3080 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00003081 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
3082 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02003083 * Fix signed-to-unsigned integer conversion warning
3084 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06003085 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
3086 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01003087 * Fix false failure in all.sh when backup files exist in include/mbedtls
3088 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
3089 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
3090 mbedtls_asn1_write_bitstring().
3091 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
3092 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00003093 correctly as trailing zeroes were not accounted for as unused bits in the
3094 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00003095
3096Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003097 * Reduce RAM consumption during session renegotiation by not storing
3098 the peer CRT chain and session ticket twice.
3099 * Include configuration file in all header files that use configuration,
3100 instead of relying on other header files that they include.
3101 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05003102 * Add support for alternative CSR headers, as used by Microsoft and defined
3103 in RFC 7468. Found by Michael Ernst. Fixes #767.
3104 * Correct many misspellings. Fixed by MisterDA #2371.
3105 * Provide an abstraction of vsnprintf to allow alternative implementations
3106 for platforms that don't provide it. Based on contributions by Joris Aerts
3107 and Nathaniel Wesley Filardo.
3108 * Fix clobber list in MIPS assembly for large integer multiplication.
3109 Previously, this could lead to functionally incorrect assembly being
3110 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01003111 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
3112 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01003113 * Reduce the complexity of the timing tests. They were assuming more than the
3114 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01003115 * Fix configuration queries in ssl-opt.h. #2030
3116 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00003117 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
3118 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003119 * Ciphersuites based on 3DES now have the lowest priority by default when
3120 they are enabled.
3121
3122= mbed TLS 2.16.0 branch released 2018-12-21
3123
3124Features
3125 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
3126 of parameters in the API. This allows detection of obvious misuses of the
3127 API, such as passing NULL pointers. The API of existing functions hasn't
3128 changed, but requirements on parameters have been made more explicit in
3129 the documentation. See the corresponding API documentation for each
3130 function to see for which parameter values it is defined. This feature is
3131 disabled by default. See its API documentation in config.h for additional
3132 steps you have to take when enabling it.
3133
3134API Changes
3135 * The following functions in the random generator modules have been
3136 deprecated and replaced as shown below. The new functions change
3137 the return type from void to int to allow returning error codes when
3138 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
3139 primitive. Fixes #1798.
3140 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
3141 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
3142 * Extend ECDH interface to enable alternative implementations.
3143 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
3144 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
3145 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
3146 * Additional parameter validation checks have been added for the following
3147 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
3148 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
3149 Where modules have had parameter validation added, existing parameter
3150 checks may have changed. Some modules, such as Chacha20 had existing
3151 parameter validation whereas other modules had little. This has now been
3152 changed so that the same level of validation is present in all modules, and
3153 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
3154 is off. That means that checks which were previously present by default
3155 will no longer be.
3156
3157New deprecations
3158 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
3159 in favor of functions that can return an error code.
3160
3161Bugfix
3162 * Fix for Clang, which was reporting a warning for the bignum.c inline
3163 assembly for AMD64 targets creating string literals greater than those
3164 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
3165 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
3166 through qemu user emulation. Reported and fix suggested by randombit
3167 in #1212. Fixes #1212.
3168 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
3169 This could lead to a buffer overflow, but only in case ticket authentication
3170 was broken. Reported and fix suggested by Guido Vranken in #659.
3171 * Add explicit integer to enumeration type casts to example program
3172 programs/pkey/gen_key which previously led to compilation failure
3173 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
3174 * Fix double initialization of ECC hardware that made some accelerators
3175 hang.
3176 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05003177 of check for certificate/key matching. Reported by Attila Molnar, #507.
3178
3179 = mbed TLS 2.15.1 branch released 2018-11-30
3180
3181 Changes
3182 * Update the Mbed Crypto submodule to version 0.1.0b2.
3183
3184 = mbed TLS 2.15.0 branch released 2018-11-23
3185
3186 Features
3187 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
3188 Mbed Crypto as the source of the cryptography implementation.
3189 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
3190 the PSA Crypto API from Mbed Crypto when additionally used with the
3191 USE_CRYPTO_SUBMODULE build option.
3192
3193 Changes
3194 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003195 from the cipher abstraction layer. Fixes #2198.
3196
3197= mbed TLS 2.14.1 branch released 2018-11-30
3198
3199Security
3200 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
3201 decryption that could lead to a Bleichenbacher-style padding oracle
3202 attack. In TLS, this affects servers that accept ciphersuites based on
3203 RSA decryption (i.e. ciphersuites whose name contains RSA but not
3204 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
3205 (University of Adelaide), Daniel Genkin (University of Michigan),
3206 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
3207 (University of Adelaide, Data61). The attack is described in more detail
3208 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
3209 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
3210 via branching and memory access patterns. An attacker who could submit
3211 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
3212 of the decryption and not its result could nonetheless decrypt RSA
3213 plaintexts and forge RSA signatures. Other asymmetric algorithms may
3214 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
3215 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
3216 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
3217 modules.
3218
3219API Changes
3220 * The new functions mbedtls_ctr_drbg_update_ret() and
3221 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
3222 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003223 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00003224 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003225
Hanno Beckerd3445da2018-11-02 09:36:45 +00003226= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00003227
Simon Butcherb35e59d2018-11-19 15:49:26 +00003228Security
Simon Butcher681edee2018-11-07 16:25:38 +00003229 * Fix overly strict DN comparison when looking for CRLs belonging to a
3230 particular CA. This previously led to ignoring CRLs when the CRL's issuer
3231 name and the CA's subject name differed in their string encoding (e.g.,
3232 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01003233 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00003234 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01003235 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00003236 incoming message buffer was placed within the first 64KiB of address
3237 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003238 to trigger a memory access up to 64KiB beyond the incoming message buffer,
3239 potentially leading to an application crash or information disclosure.
3240 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
3241 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00003242 adversary to construct non-primes that would be erroneously accepted as
3243 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003244 security of TLS, but can matter in other contexts with numbers chosen
3245 potentially by an adversary that should be prime and can be validated.
3246 For example, the number of rounds was enough to securely generate RSA key
3247 pairs or Diffie-Hellman parameters, but was insufficient to validate
3248 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00003249 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003250 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02003251
Simon Butcherb35e59d2018-11-19 15:49:26 +00003252Features
3253 * Add support for temporarily suspending expensive ECC computations after
3254 some configurable amount of operations. This is intended to be used in
3255 constrained, single-threaded systems where ECC is time consuming and can
3256 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02003257 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
3258 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
3259 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
3260 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00003261 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
3262 including client authentication).
3263 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
3264 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00003265 MPI multiplications used in ECC and RSA cryptography. Contributed by
3266 Aurelien Jarno.
3267 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
3268 signature always used a salt with the same length as the hash, and returned
3269 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00003270 shorter. This allows the library to support all hash and signature sizes
3271 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02003272 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00003273 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003274
3275API Changes
3276 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
3277 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00003278 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03003279 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003280
3281New deprecations
3282 * All module specific errors following the form
3283 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00003284 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003285 platform error.
3286 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003287 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
3288 by the equivalent plaform error.
3289 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03003290 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01003291 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00003292
3293Bugfix
3294 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
3295 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01003296 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
3297 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01003298 * Fix a bug in the update function for SSL ticket keys which previously
3299 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01003300 * Fix failure in hmac_drbg in the benchmark sample application, when
3301 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
3302 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01003303 which lead to accepting properly authenticated but improperly
3304 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00003305 * Fix memory leak and freeing without initialization in the example
3306 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01003307 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
3308 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
3309 * Zeroize memory used for buffering or reassembling handshake messages
3310 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00003311 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
3312 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
3313 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00003314 UTF8String. Previously, the use of the PrintableString format led to
3315 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01003316 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
3317 Thomas-Dee.
3318 * Fix compilation failure for configurations which use compile time
3319 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01003320 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
3321 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01003322
Simon Butcherc86993e2018-09-27 09:48:54 +01003323Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02003324 * Removed support for Yotta as a build tool.
3325 * Add tests for session resumption in DTLS.
3326 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01003327 test the handling of large packets and small packets on the client side
3328 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01003329 * Change the dtls_client and dtls_server samples to work by default over
3330 IPv6 and optionally by a build option over IPv4.
3331 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00003332 calls, rather than Win32 API calls directly. This is necessary to avoid
3333 conflict with C runtime usage. Found and fixed by irwir.
3334 * Remember the string format of X.509 DN attributes when replicating
3335 X.509 DNs. Previously, DN attributes were always written in their default
3336 string format (mostly PrintableString), which could lead to CRTs being
3337 created which used PrintableStrings in the issuer field even though the
3338 signing CA used UTF8Strings in its subject field; while X.509 compliant,
3339 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00003340 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
3341 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01003342 * Improve documentation of mbedtls_ssl_get_verify_result().
3343 Fixes #517 reported by github-monoculture.
3344 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01003345 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01003346 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01003347
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003348= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01003349
Hanno Becker921b76d2018-09-05 16:21:36 +01003350API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003351 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01003352 whose implementation should behave as a thread-safe version of gmtime().
3353 This allows users to configure such an implementation at compile time when
3354 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003355 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01003356 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01003357
3358Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01003359 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01003360 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003361
k-stachowiak21feae52018-07-09 14:42:35 +02003362= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02003363
3364Security
3365 * Fix an issue in the X.509 module which could lead to a buffer overread
3366 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02003367 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02003368 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02003369
3370Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02003371 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02003372 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02003373 with the peer, as well as by a new per-connection MTU option, set using
3374 mbedtls_ssl_set_mtu().
3375 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003376 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
3377 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01003378 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01003379 enabled by default.
3380 * Add support for buffering out-of-order handshake messages in DTLS.
3381 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003382 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
3383 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01003384
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003385API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02003386 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02003387 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01003388
3389Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02003390 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
3391 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01003392 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
3393 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03003394 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03003395 Fix contributed by Espressif Systems.
3396 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01003397 This improves compliance to RFC 4492, and as a result, solves
3398 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01003399 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01003400 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01003401 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
3402 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
3403 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
3404 with TLS versions 1.1 and earlier when the server requested authentication
3405 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01003406 check in parsing the CertificateRequest message,
3407 introduced in Mbed TLS 2.12.0. Fixes #1954.
3408 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01003409 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
3410 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01003411 * Fix undefined shifts with negative values in certificates parsing
3412 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01003413 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02003414 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01003415 * Remove redundant else statement. Raised by irwir. Fixes #1776.
3416
3417Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01003418 * Copy headers preserving timestamps when doing a "make install".
3419 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01003420 * Allow the forward declaration of public structs. Contributed by Dawid
3421 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01003422 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01003423 CCM test vectors from RAM.
3424 * Add support for buffering of out-of-order handshake messages.
3425 * Add warnings to the documentation of the HKDF module to reduce the risk
3426 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003427 functions. Fixes #1775. Reported by Brian J. Murray.
3428
Gilles Peskine104d8582018-06-27 10:57:33 +02003429= mbed TLS 2.12.0 branch released 2018-07-25
3430
3431Security
3432 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
3433 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
3434 partially recover the plaintext of messages under some conditions by
3435 exploiting timing measurements. With DTLS, the attacker could perform
3436 this recovery by sending many messages in the same connection. With TLS
3437 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
3438 worked if the same secret (for example a HTTP Cookie) has been repeatedly
3439 sent over connections manipulated by the attacker. Connections using GCM
3440 or CCM instead of CBC, using hash sizes other than SHA-384, or using
3441 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
3442 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02003443 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
3444 Shamir.
3445 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02003446 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01003447 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02003448 plaintext of messages under some conditions by using a cache attack
3449 targeting an internal MD/SHA buffer. With TLS or if
3450 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
3451 the same secret (for example a HTTP Cookie) has been repeatedly sent over
3452 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02003453 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
3454 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
3455 * Add a counter-measure against a vulnerability in TLS ciphersuites based
3456 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
3457 execute code on the local machine as well as manipulate network packets,
3458 to partially recover the plaintext of messages under some conditions (see
3459 previous entry) by using a cache attack targeting the SSL input record
3460 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02003461 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02003462 Eyal Ronen and Adi Shamir.
3463
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02003464Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003465 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02003466 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01003467 by Daniel King.
3468 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01003469 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
3470 Contributed by Augustin Cavalier.
3471 * Make the receive and transmit buffers independent sizes, for situations
3472 where the outgoing buffer can be fixed at a smaller size than the incoming
3473 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03003474 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003475 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02003476 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01003477 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
3478
3479Bugfix
niisatob7d39db2018-06-25 20:44:57 +09003480 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09003481 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01003482 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003483 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01003484 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
3485 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01003486 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
3487 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01003488 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
3489 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03003490 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
3491 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003492 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
3493 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01003494 * Added length checks to some TLS parsing functions. Found and fixed by
3495 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03003496 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03003497 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01003498 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
3499 the `#include` in the header files. Resolves #857
3500 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01003501 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
3502 Drozd. #1098
3503 * Fix decryption for zero length messages (which contain all padding) when a
3504 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
3505 such a message was wrongly reported as an invalid record and therefore lead
3506 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01003507 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
3508 contributed by Espressif Systems. Fixes #1632
3509 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003510 when the request_size argument is set to 0 as stated in the documentation.
3511 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01003512 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01003513 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003514 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003515
3516Changes
3517 * Fail when receiving a TLS alert message with an invalid length, or invalid
3518 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
3519 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003520 when calling with a NULL salt and non-zero salt_len. Contributed by
3521 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00003522 * Change the shebang line in Perl scripts to look up perl in the PATH.
3523 Contributed by fbrosson.
3524 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003525 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02003526 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
3527
3528= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01003529
3530Features
3531 * Add additional block mode, OFB (Output Feedback), to the AES module and
3532 cipher abstraction module.
3533 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01003534 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
3535 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02003536 * Add support for the XTS block cipher mode with AES (AES-XTS).
3537 Contributed by Aorimn in pull request #414.
3538 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01003539 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01003540 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01003541
3542Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01003543 * Fix the cert_write example to handle certificates signed with elliptic
3544 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01003545 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
3546 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01003547 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01003548 Reported by rahmanih in #683
3549 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
3550
Simon Butcherb6a5bff2018-06-18 11:51:36 +01003551Changes
3552 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
3553 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003554 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01003555 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003556
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01003557= mbed TLS 2.10.0 branch released 2018-06-06
3558
3559Features
3560 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02003561 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00003562
3563API Changes
3564 * Extend the platform module with a util component that contains
3565 functionality shared by multiple Mbed TLS modules. At this stage
3566 platform_util.h (and its associated platform_util.c) only contain
3567 mbedtls_platform_zeroize(), which is a critical function from a security
3568 point of view. mbedtls_platform_zeroize() needs to be regularly tested
3569 against compilers to ensure that calls to it are not removed from the
3570 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01003571 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01003572 facilitate testing and maintenance.
3573
3574Bugfix
3575 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01003576 build to fail. Found by zv-io. Fixes #1651.
3577
Moran Pekera64fba42018-02-25 13:29:03 +02003578Changes
3579 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01003580 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01003581 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02003582
Simon Butcherf85c90a2017-07-27 15:11:52 +01003583= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01003584
3585Security
3586 * Fix an issue in the X.509 module which could lead to a buffer overread
3587 during certificate validation. Additionally, the issue could also lead to
3588 unnecessary callback checks being made or to some validation checks to be
3589 omitted. The overread could be triggered remotely, while the other issues
3590 would require a non DER-compliant certificate to be correctly signed by a
3591 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
3592 luocm. Fixes #825.
3593 * Fix the buffer length assertion in the ssl_parse_certificate_request()
3594 function which led to an arbitrary overread of the message buffer. The
3595 overreads could be caused by receiving a malformed message at the point
3596 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04003597 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01003598 data is output with the debug data.
3599 * Fix a client-side bug in the validation of the server's ciphersuite choice
3600 which could potentially lead to the client accepting a ciphersuite it didn't
3601 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003602 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01003603 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01003604
3605Features
3606 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01003607 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
3608 Suggested and contributed by jkivilin in pull request #394.
3609 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01003610 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01003611 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
3612 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01003613
3614API Changes
3615 * Extend the public API with the function of mbedtls_net_poll() to allow user
3616 applications to wait for a network context to become ready before reading
3617 or writing.
3618 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02003619 a check for whether more more data is pending to be processed in the
3620 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01003621 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00003622 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01003623
Gilles Peskine08185402018-03-22 21:50:48 +01003624Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01003625 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
3626 contributed by Brian J Murray and David Brown.
3627 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01003628 in configurations that omit certain hashes or public-key algorithms.
3629 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02003630 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01003631 #1353
3632 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
3633 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
3634 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08003635 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01003636 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07003637 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01003638 unable to parse keys which had only the optional parameters field of the
3639 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
3640 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02003641 stated in the mbedtls_cipher_update() documentation. Contributed by
3642 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01003643 * Fix overriding and ignoring return values when parsing and writing to
3644 a file in pk_sign program. Found by kevlut in #1142.
3645 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
3646 where data needs to be fetched from the underlying transport in order
3647 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01003648 returned when unexpected messages were being discarded, ignoring that
3649 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02003650 in the internal buffers; these cases led to deadlocks when event-driven
3651 I/O was used. Found and reported by Hubert Mis in #772.
3652 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04003653 function which leads to a potential one byte overread of the message
3654 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01003655 * Fix invalid buffer sizes passed to zlib during record compression and
3656 decompression.
3657 * Fix the soversion of libmbedcrypto to match the soversion of the
3658 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01003659 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003660 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
3661
Simon Butcherb03120a2018-04-30 16:40:25 +01003662Changes
3663 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01003664 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
3665 independently by Matthieu Volat and Arne Schwabe.
3666 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00003667 public-key algorithms. Includes contributions by Gert van Dijk.
3668 * Improve negative testing of X.509 parsing.
3669 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01003670 configurations where the feature is disabled. Found and fixed by Gergely
3671 Budai.
3672 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
3673 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01003674 instead incorrectly manipulates the configuration structure directly.
3675 Found and fix submitted by junyeonLEE in #1220.
3676 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02003677 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
3678 without PBES2. Fixed by Marcos Del Sol Vives.
3679 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01003680 for Curve25519 (other curves had it already). Contributed by Nicholas
3681 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01003682 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
3683 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01003684 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01003685 Paul Sokolovsky in #1356.
3686 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01003687 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01003688 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01003689 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02003690 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02003691 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
3692 by Alexey Skalozub in #405.
3693 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02003694 transmitting more than the required length, return an error. Raised by
3695 Sam O'Connor in #1245.
3696 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01003697 HMAC functions with non-HMAC ciphersuites. Independently contributed
3698 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02003699 * Improve security of RSA key generation by including criteria from
3700 FIPS 186-4. Contributed by Jethro Beekman. #1380
3701 * Declare functions in header files even when an alternative implementation
3702 of the corresponding module is activated by defining the corresponding
3703 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04003704 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003705 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00003706 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01003707
Gilles Peskine04f9bd02018-02-22 15:22:44 +01003708= mbed TLS 2.8.0 branch released 2018-03-16
3709
Thomas Daubneyd596e992021-06-18 11:50:56 +01003710Default behavior changes
3711 * The truncated HMAC extension now conforms to RFC 6066. This means
3712 that when both sides of a TLS connection negotiate the truncated
3713 HMAC extension, Mbed TLS can now interoperate with other
3714 compliant implementations, but this breaks interoperability with
3715 prior versions of Mbed TLS. To restore the old behavior, enable
3716 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
3717 config.h. Found by Andreas Walz (ivESK, Offenburg University of
3718 Applied Sciences).
3719
Hanno Becker7dc832b2017-11-16 17:39:34 +00003720Security
Gilles Peskine04f9bd02018-02-22 15:22:44 +01003721 * Fix implementation of the truncated HMAC extension. The previous
3722 implementation allowed an offline 2^80 brute force attack on the
3723 HMAC key of a single, uninterrupted connection (with no
3724 resumption of the session).
Gilles Peskine553a06f2018-03-13 17:15:34 +01003725 * Verify results of RSA private key operations to defend
3726 against Bellcore glitch attack.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01003727 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
3728 a crash on invalid input.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01003729 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
3730 crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01003731 * Fix CRL parsing to reject CRLs containing unsupported critical
3732 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
Hanno Becker7dc832b2017-11-16 17:39:34 +00003733
Antonio Quartulli12ccef22017-12-20 07:03:55 +08003734Features
3735 * Extend PKCS#8 interface by introducing support for the entire SHA
3736 algorithms family when encrypting private keys using PKCS#5 v2.0.
Gilles Peskine1d80a672018-02-14 11:33:30 +01003737 This allows reading encrypted PEM files produced by software that
3738 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
3739 OpenVPN Inc. Fixes #1339
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01003740 * Add support for public keys encoded in PKCS#1 format. #1122
Antonio Quartulli12ccef22017-12-20 07:03:55 +08003741
Hanno Beckercf092b22018-03-06 14:23:38 +00003742New deprecations
3743 * Deprecate support for record compression (configuration option
3744 MBEDTLS_ZLIB_SUPPORT).
3745
Gilles Peskine27b07542018-02-14 14:07:48 +01003746Bugfix
3747 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
3748 Fixes #1358.
Gilles Peskine1e3fd692018-02-14 15:12:49 +01003749 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Ron Eldor099e61d2018-02-06 17:34:27 +02003750 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
3751 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Gilles Peskine1bf61232018-02-27 08:37:52 +01003752 In the context of SSL, this resulted in handshake failure. Reported by
3753 daniel in the Mbed TLS forum. #1351
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00003754 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
Gilles Peskineb4c571e2018-03-11 00:44:14 +01003755 * Fix setting version TLSv1 as minimal version, even if TLS 1
3756 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
3757 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
3758 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldor2f73c932017-09-26 15:06:56 +03003759 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
3760 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
Ron Eldorbc18eb32017-09-06 17:49:10 +03003761 Nick Wilson on issue #355
Gilles Peskine08af5382018-03-11 00:15:56 +01003762 * In test_suite_pk, pass valid parameters when testing for hash length
itayzafrir693a1d92018-02-26 12:02:10 +02003763 overflow. #1179
Gilles Peskinea31d8202018-03-12 23:45:08 +01003764 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
3765 by Guido Vranken. #639
Gilles Peskine3ff4a072018-03-12 23:54:20 +01003766 * Log correct number of ciphersuites used in Client Hello message. #918
Gilles Peskine5f193282018-03-13 17:18:06 +01003767 * Fix X509 CRT parsing that would potentially accept an invalid tag when
3768 parsing the subject alternative names.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01003769 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
3770 that could cause a key exchange to fail on valid data.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01003771 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
3772 could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01003773 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
3774 MBEDTLS_DEPRECATED_REMOVED. #1388
Sanne Woudacf793122017-09-07 16:33:44 +01003775 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
3776 Found through fuzz testing.
Gilles Peskine27b07542018-02-14 14:07:48 +01003777
3778Changes
3779 * Fix tag lengths and value ranges in the documentation of CCM encryption.
3780 Contributed by Mathieu Briand.
Gilles Peskine5daa7652018-02-14 14:10:24 +01003781 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
Gilles Peskinedf298682018-02-14 15:49:54 +01003782 * Remove support for the library reference configuration for picocoin.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01003783 * MD functions deprecated in 2.7.0 are no longer inline, to provide
3784 a migration path for those depending on the library's ABI.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02003785 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine6dc4a312018-03-13 00:13:06 +01003786 * Use (void) when defining functions with no parameters. Contributed by
3787 Joris Aerts. #678
Gilles Peskine27b07542018-02-14 14:07:48 +01003788
Simon Butcher55fc4e02018-02-05 01:09:13 +00003789= mbed TLS 2.7.0 branch released 2018-02-03
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003790
Gilles Peskine28a0c722017-10-17 19:01:38 +02003791Security
Simon Butcher55fc4e02018-02-05 01:09:13 +00003792 * Fix a heap corruption issue in the implementation of the truncated HMAC
3793 extension. When the truncated HMAC extension is enabled and CBC is used,
3794 sending a malicious application packet could be used to selectively corrupt
3795 6 bytes on the peer's heap, which could potentially lead to crash or remote
3796 code execution. The issue could be triggered remotely from either side in
3797 both TLS and DTLS. CVE-2018-0488
3798 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
3799 for the key size, which could potentially lead to crash or remote code
3800 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
3801 Qualcomm Technologies Inc. CVE-2018-0487
3802 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
3803 zeros.
3804 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
3805 64 KiB to the address of the SSL buffer and causing a wrap around.
3806 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
Hanno Becker930025d2017-09-18 16:07:19 +01003807 default enabled) maximum fragment length extension is disabled in the
3808 config and the application data buffer passed to mbedtls_ssl_write
3809 is larger than the internal message buffer (16384 bytes by default), the
3810 latter overflows. The exploitability of this issue depends on whether the
3811 application layer can be forced into sending such large packets. The issue
3812 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
Simon Butcher55fc4e02018-02-05 01:09:13 +00003813 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
3814 Fixes #707.
3815 * Add a provision to prevent compiler optimizations breaking the time
3816 constancy of mbedtls_ssl_safer_memcmp().
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01003817 * Ensure that buffers are cleared after use if they contain sensitive data.
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01003818 Changes were introduced in multiple places in the library.
Ron Eldor31162e42017-09-05 15:34:35 +03003819 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
3820 being leaked to memory after release.
Janos Follathb174c842017-09-20 16:26:04 +01003821 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
3822 leaking 1 bit of the private key. Reported by prashantkspatil.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003823 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
3824 data. Previously, trailing zero bytes were detected and omitted for the
3825 sake of saving memory, but potentially leading to slight timing
3826 differences. Reported by Marco Macchetti, Kudelski Group.
Hanno Becker509fef72017-10-19 10:10:18 +01003827 * Wipe stack buffer temporarily holding EC private exponent
3828 after keypair generation.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003829 * Fix a potential heap buffer over-read in ALPN extension parsing
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01003830 (server-side). Could result in application crash, but only if an ALPN
3831 name larger than 16 bytes had been configured on the server.
Hanno Becker0cd5b942017-10-13 17:17:28 +01003832 * Change default choice of DHE parameters from untrustworthy RFC 5114
3833 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
3834 manner.
Gilles Peskine28a0c722017-10-17 19:01:38 +02003835
Gilles Peskineb04e2c32017-09-29 15:45:12 +02003836Features
3837 * Allow comments in test data files.
Gilles Peskinec82fbb42017-12-15 15:01:27 +01003838 * The selftest program can execute a subset of the tests based on command
3839 line arguments.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02003840 * New unit tests for timing. Improve the self-test to be more robust
3841 when run on a heavily-loaded machine.
Gilles Peskine618d0912018-01-02 16:04:19 +01003842 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Jaeden Amero91d49e82018-01-11 16:35:44 +00003843 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Jaeden Amero15263302017-09-21 12:53:48 +01003844 * Add support for alternative implementations of GCM, selected by the
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01003845 configuration flag MBEDTLS_GCM_ALT.
Ron Eldor314adb62017-10-10 18:28:25 +03003846 * Add support for alternative implementations for ECDSA, controlled by new
3847 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
3848 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03003849 The following functions from the ECDSA module can be replaced
Ron Eldor314adb62017-10-10 18:28:25 +03003850 with alternative implementation:
Ron Eldor2981a0a2017-09-24 15:41:09 +03003851 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Hanno Becker087d5ad2018-01-24 16:06:25 +00003852 * Add support for alternative implementation of ECDH, controlled by the
3853 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
Ron Eldora84c1cb2017-10-10 19:04:27 +03003854 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
Ron Eldor8b766212017-09-24 15:44:56 +03003855 The following functions from the ECDH module can be replaced
3856 with an alternative implementation:
3857 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Hanno Becker087d5ad2018-01-24 16:06:25 +00003858 * Add support for alternative implementation of ECJPAKE, controlled by
3859 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003860 * Add mechanism to provide alternative implementation of the DHM module.
Gilles Peskine26182ed2017-09-29 15:45:12 +02003861
Hanno Beckera47023e2017-12-22 17:08:03 +00003862API Changes
3863 * Extend RSA interface by multiple functions allowing structure-
3864 independent setup and export of RSA contexts. Most notably,
Simon Butcher55fc4e02018-02-05 01:09:13 +00003865 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
Hanno Beckera47023e2017-12-22 17:08:03 +00003866 up RSA contexts from partial key material and having them completed to the
3867 needs of the implementation automatically. This allows to setup private RSA
3868 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
3869 purpose or CRT and/or blinding.
3870 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
3871 implementations of the RSA interface declared in rsa.h.
Gilles Peskine0a969102018-01-22 14:55:20 +01003872 * The following functions in the message digest modules (MD2, MD4, MD5,
3873 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
3874 The new functions change the return type from void to int to allow
3875 returning error codes when using MBEDTLS_<MODULE>_ALT.
3876 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
3877 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
3878 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01003879 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02003880
Ron Eldor73a38172017-10-03 15:58:26 +03003881New deprecations
3882 * Deprecate usage of RSA primitives with non-matching key-type
Simon Butcher55fc4e02018-02-05 01:09:13 +00003883 (e.g. signing with a public key).
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01003884 * Direct manipulation of structure fields of RSA contexts is deprecated.
3885 Users are advised to use the extended RSA API instead.
Jaeden Amero005239e2018-01-25 14:47:39 +00003886 * Deprecate usage of message digest functions that return void
3887 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
3888 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
3889 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
3890 that can return an error code.
Hanno Becker0cd5b942017-10-13 17:17:28 +01003891 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
3892 parameters from RFC 3526 or the newly added parameters from RFC 7919.
3893 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
3894 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
3895 etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003896 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
3897 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Hanno Becker0cd5b942017-10-13 17:17:28 +01003898 accepting DHM parameters in binary form, matching the new constants.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003899
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003900Bugfix
3901 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
3902 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher2c4f9462017-09-30 23:39:46 +01003903 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Simon Butcherb03120a2018-04-30 16:40:25 +01003904 Found by projectgus and Jethro Beekman, #836.
Simon Butcher16373a52017-10-02 19:12:54 +01003905 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
Ron Eldor73a38172017-10-03 15:58:26 +03003906 * Parse signature algorithm extension when renegotiating. Previously,
3907 renegotiated handshakes would only accept signatures using SHA-1
3908 regardless of the peer's preferences, or fail if SHA-1 was disabled.
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00003909 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
3910 dates on leap years with 100 and 400 intervals are handled correctly. Found
3911 by Nicholas Wilson. #694
Gilles Peskine91048a32017-10-19 17:46:14 +02003912 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
3913 accepted. Generating these signatures required the private key.
Gilles Peskinee7707222017-11-24 15:35:50 +01003914 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
3915 Found independently by Florian in the mbed TLS forum and by Mishamax.
3916 #878, #1019.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01003917 * Fix variable used before assignment compilation warnings with IAR
3918 toolchain. Found by gkerrien38.
Andres AG51a7ae12017-02-22 16:23:26 +00003919 * Fix unchecked return codes from AES, DES and 3DES functions in
3920 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
3921 If a call to one of the functions of the cryptographic primitive modules
3922 failed, the error may not be noticed by the function
3923 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
3924 Guido Vranken. #756
Gilles Peskine4b117d92017-11-28 17:23:37 +01003925 * Include configuration file in md.h, to fix compilation warnings.
3926 Reported by aaronmdjones in #1001
Hanno Becker041a6b02017-09-28 14:52:26 +01003927 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
3928 writing routines that prevented these functions to work with alternative
3929 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Hanno Becker86e52302017-10-05 09:08:53 +01003930 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
3931 non-v3 CRT's.
Gilles Peskined742b742017-11-28 17:40:56 +01003932 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00003933 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01003934 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003935 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Hanno Becker479e8e22017-10-12 15:39:45 +01003936 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003937 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Darryl Green36ba8b62017-11-21 09:55:33 +00003938 Reported by Yolan Romailler.
Gilles Peskineff01e002017-12-01 23:42:17 +01003939 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
Gilles Peskined6294112017-12-01 23:46:58 +01003940 * Fix incorrect unit in benchmark output. #850
Hanno Becker81e96dd2017-09-18 11:07:25 +01003941 * Add size-checks for record and handshake message content, securing
3942 fragile yet non-exploitable code-paths.
Ron Eldore1a9a4a2017-10-17 18:15:41 +03003943 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
3944 MilenkoMitrovic, #1104
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01003945 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003946 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Gilles Peskineec9c6262018-01-02 16:27:50 +01003947 * Fix possible memory leaks in mbedtls_gcm_self_test().
3948 * Added missing return code checks in mbedtls_aes_self_test().
Hanno Becker997e2182018-01-10 10:39:20 +00003949 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
3950 RSA test suite where the failure of CTR DRBG initialization lead to
3951 freeing an RSA context and several MPI's without proper initialization
3952 beforehand.
Gilles Peskine980d2032018-01-22 23:10:53 +01003953 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01003954 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
3955 Found and fixed by Martijn de Milliano.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003956 * Fix an issue in the cipher decryption with the mode
3957 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
3958 Note, this padding mode is not used by the TLS protocol. Found and fixed by
3959 Micha Kraus.
Gilles Peskined91f2a22018-01-19 11:25:10 +01003960 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
3961 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
3962 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
3963 mbedtls_sha512_init() is called before operating on the relevant context
Gilles Peskine0a969102018-01-22 14:55:20 +01003964 structure. Do not assume that zeroizing a context is a correct way to
3965 reset it. Found independently by ccli8 on Github.
3966 * In mbedtls_entropy_free(), properly free the message digest context.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003967 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
3968 and fixed by muddog.
Hanno Becker86e52302017-10-05 09:08:53 +01003969
3970Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00003971 * Extend cert_write example program by options to set the certificate version
Hanno Becker86e52302017-10-05 09:08:53 +01003972 and the message digest. Further, allow enabling/disabling of authority
3973 identifier, subject identifier and basic constraints extensions.
Hanno Becker32297e82017-12-22 10:24:32 +00003974 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
3975 particular, don't require P,Q if neither CRT nor blinding are
3976 used. Reported and fix proposed independently by satur9nine and sliai
3977 on GitHub.
Gilles Peskineec9c6262018-01-02 16:27:50 +01003978 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine50984002018-01-17 08:01:37 +01003979 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
3980 undeclared dependency of the RSA module on the ASN.1 module.
Gilles Peskine0a969102018-01-22 14:55:20 +01003981 * Update all internal usage of deprecated message digest functions to the
3982 new ones with return codes. In particular, this modifies the
3983 mbedtls_md_info_t structure. Propagate errors from these functions
3984 everywhere except some locations in the ssl_tls.c module.
Jaeden Amero791e08a2018-01-26 12:04:12 +00003985 * Improve CTR_DRBG error handling by propagating underlying AES errors.
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01003986 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
3987 modules where the software implementation can be replaced by a hardware
3988 implementation.
Hanno Becker2a037942017-10-06 12:29:50 +01003989 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
3990 throughout the library.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003991
Simon Butcher72ea31b2017-08-10 11:51:16 +01003992= mbed TLS 2.6.0 branch released 2017-08-10
Ron Eldord5a75f42016-12-16 16:15:56 +02003993
Simon Butcherb060cc22017-07-28 01:04:34 +01003994Security
Simon Butcher01971d02017-08-10 10:48:01 +01003995 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcherf85c90a2017-07-27 15:11:52 +01003996 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
3997 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher01971d02017-08-10 10:48:01 +01003998 (default: 8) intermediates, even when it was not trusted. This could be
3999 triggered remotely from either side. (With authmode set to 'required'
Simon Butcher3f2557e2017-08-01 18:06:12 +01004000 (the default), the handshake was correctly aborted).
4001 * Reliably wipe sensitive data after use in the AES example applications
Hanno Becker7ec83df2017-06-27 08:26:53 +01004002 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
4003 Found by Laurent Simon.
Simon Butcherf85c90a2017-07-27 15:11:52 +01004004
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01004005Features
4006 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01004007 and the context struct mbedtls_platform_context to perform
4008 platform-specific setup and teardown operations. The macro
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01004009 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
Simon Butcher3f2557e2017-08-01 18:06:12 +01004010 by the user in a platform_alt.h file. These new functions are required in
Simon Butcher01971d02017-08-10 10:48:01 +01004011 some embedded environments to provide a means of initialising underlying
4012 cryptographic acceleration hardware.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01004013
Simon Butcherab670432017-07-20 12:33:41 +02004014API Changes
4015 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
4016 API consistent with mbed TLS 2.5.0. Specifically removed the inline
4017 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcher3f2557e2017-08-01 18:06:12 +01004018 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
4019 by James Cowgill. #978
Simon Butcherf85c90a2017-07-27 15:11:52 +01004020 * Certificate verification functions now set flags to -1 in case the full
4021 chain was not verified due to an internal error (including in the verify
4022 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01004023 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherf85c90a2017-07-27 15:11:52 +01004024 verification of the peer's certificate failed due to an overlong chain or
Simon Butcher01971d02017-08-10 10:48:01 +01004025 a fatal error in the verify callback.
Simon Butcherab670432017-07-20 12:33:41 +02004026
Ron Eldore2efaea2016-12-16 16:15:56 +02004027Bugfix
Simon Butcher01971d02017-08-10 10:48:01 +01004028 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
4029 Reported by roberto. #716
4030 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Ron Eldor63140682017-01-09 19:27:59 +02004031 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
Simon Butcher3f2557e2017-08-01 18:06:12 +01004032 always be implemented by pthread support. #696
Simon Butcher01971d02017-08-10 10:48:01 +01004033 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
4034 in the case of an error. Found by redplait. #590
Ron Eldorca6ff582017-01-12 14:50:50 +02004035 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Simon Butcher3f2557e2017-08-01 18:06:12 +01004036 Reported and fix suggested by guidovranken. #740
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01004037 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
4038 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01004039 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004040 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Simon Butcher5deb5182017-07-26 17:25:55 +01004041 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
4042 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00004043 * Fix potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004044 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Andres AG2e65a542017-02-17 13:54:43 +00004045 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
4046 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01004047 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004048 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher5deb5182017-07-26 17:25:55 +01004049 constructed certificates to bypass the certificate verification check.
Simon Butchera418e822017-07-28 23:52:10 +01004050 * Fix a call to the libc function time() to call the platform abstraction
Simon Butcher3f2557e2017-08-01 18:06:12 +01004051 function mbedtls_time() instead. Found by wairua. #666
4052 * Avoid shadowing of time and index functions through mbed TLS function
4053 arguments. Found by inestlerode. #557.
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02004054
Janos Follath78b14732017-06-22 10:02:07 +01004055Changes
Janos Follathb85291c2017-06-22 10:02:07 +01004056 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Simon Butcher3f2557e2017-08-01 18:06:12 +01004057 64-bit division. This is useful on embedded platforms where 64-bit division
4058 created a dependency on external libraries. #708
Janos Follath78b14732017-06-22 10:02:07 +01004059 * Removed mutexes from ECP hardware accelerator code. Now all hardware
4060 accelerator code in the library leaves concurrency handling to the
4061 platform. Reported by Steven Cooreman. #863
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01004062 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
4063 config-no-entropy.h to reduce the RAM footprint.
Simon Butcher3f2557e2017-08-01 18:06:12 +01004064 * Added a test script that can be hooked into git that verifies commits
4065 before they are pushed.
Hanno Becker85b602e2017-05-04 11:27:39 +01004066 * Improve documentation of PKCS1 decryption functions.
Janos Follath78b14732017-06-22 10:02:07 +01004067
Simon Butcherf2a597f2017-06-20 23:08:10 +01004068= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckereccf60c2017-06-05 15:19:01 +01004069
Gilles Peskine5e79cb32017-05-04 16:17:21 +02004070Security
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01004071 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
4072 The issue could only happen client-side with renegotiation enabled.
4073 Could result in DoS (application crash) or information leak
4074 (if the application layer sent data read from mbedtls_ssl_read()
4075 back to the server or to a third party). Can be triggered remotely.
Gilles Peskine5d2511c2017-05-12 13:16:40 +02004076 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
4077 certificate verification. SHA-1 can be turned back on with a compile-time
4078 option if needed.
Gilles Peskined50177f2017-05-16 17:53:03 +02004079 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
4080 detect it sometimes. Reported by Hugo Leisink. #810
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02004081 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
4082 potential Bleichenbacher/BERserk-style attack.
Gilles Peskine5e79cb32017-05-04 16:17:21 +02004083
Hanno Beckereccf60c2017-06-05 15:19:01 +01004084Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01004085 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
4086 valid C and they prevented the test from compiling in Visual Studio 2015
4087 and with GCC using the -Wpedantic compilation option.
Hanno Becker7e5437a2017-04-28 17:15:26 +01004088 * Fix insufficient support for signature-hash-algorithm extension,
4089 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Janos Follath5a1c0e72017-06-16 09:00:07 +01004090 * Fix behaviour that hid the original cause of fatal alerts in some cases
4091 when sending the alert failed. The fix makes sure not to hide the error
Gilles Peskine3df98f52017-05-10 17:47:40 +02004092 that triggered the alert.
Janos Follath5a1c0e72017-06-16 09:00:07 +01004093 * Fix SSLv3 renegotiation behaviour and stop processing data received from
4094 peer after sending a fatal alert to refuse a renegotiation attempt.
4095 Previous behaviour was to keep processing data even after the alert has
4096 been sent.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01004097 * Accept empty trusted CA chain in authentication mode
Simon Butcherb03120a2018-04-30 16:40:25 +01004098 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
Janos Follath5a1c0e72017-06-16 09:00:07 +01004099 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
4100 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
4101 reflect bad EC curves within verification result.
4102 * Fix bug that caused the modular inversion function to accept the invalid
4103 modulus 1 and therefore to hang. Found by blaufish. #641.
4104 * Fix incorrect sign computation in modular exponentiation when the base is
4105 a negative MPI. Previously the result was always negative. Found by Guido
4106 Vranken.
4107 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
4108 that was triggered uppon reading an empty line. Found by Guido Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02004109
Gilles Peskine36091fe2017-05-03 16:55:03 +02004110Changes
Janos Follath5a1c0e72017-06-16 09:00:07 +01004111 * Send fatal alerts in more cases. The previous behaviour was to skip
4112 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00004113 * Clarify ECDSA documentation and improve the sample code to avoid
Janos Follath5a1c0e72017-06-16 09:00:07 +01004114 misunderstanding and potentially dangerous use of the API. Pointed out
Janos Follath0a5154b2017-03-10 11:31:41 +00004115 by Jean-Philippe Aumasson.
Gilles Peskine36091fe2017-05-03 16:55:03 +02004116
Simon Butcher9f770172017-05-15 15:13:59 +01004117= mbed TLS 2.5.0 branch released 2017-05-17
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004118
Janos Follath45182a02017-03-23 10:41:56 +00004119Security
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01004120 * Wipe stack buffers in RSA private key operations
Janos Follath5a1c0e72017-06-16 09:00:07 +01004121 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
4122 Simon.
Janos Follath45182a02017-03-23 10:41:56 +00004123 * Add exponent blinding to RSA private operations as a countermeasure
4124 against side-channel attacks like the cache attack described in
4125 https://arxiv.org/abs/1702.08719v2.
4126 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
4127 Clémentine Maurice and Stefan Mangard.
4128
Simon Butcher4775e832017-05-13 22:56:08 +01004129Features
Janos Follath5a1c0e72017-06-16 09:00:07 +01004130 * Add hardware acceleration support for the Elliptic Curve Point module.
4131 This involved exposing parts of the internal interface to enable
4132 replacing the core functions and adding and alternative, module level
4133 replacement support for enabling the extension of the interface.
Janos Follath7a8a0902017-04-10 16:13:06 +01004134 * Add a new configuration option to 'mbedtls_ssl_config' to enable
4135 suppressing the CA list in Certificate Request messages. The default
4136 behaviour has not changed, namely every configured CAs name is included.
4137
Andres AGf5bf7182017-03-03 14:09:56 +00004138API Changes
4139 * The following functions in the AES module have been deprecated and replaced
4140 by the functions shown below. The new functions change the return type from
4141 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
4142 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
4143 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
4144 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
4145
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004146Bugfix
4147 * Remove macros from compat-1.3.h that correspond to deleted items from most
4148 recent versions of the library. Found by Kyle Keen.
Janos Follath5a1c0e72017-06-16 09:00:07 +01004149 * Fixed issue in the Threading module that prevented mutexes from
4150 initialising. Found by sznaider. #667 #843
4151 * Add checks in the PK module for the RSA functions on 64-bit systems.
4152 The PK and RSA modules use different types for passing hash length and
4153 without these checks the type cast could lead to data loss. Found by Guido
4154 Vranken.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004155
Simon Butcherb65c2be2017-03-10 18:50:44 +00004156= mbed TLS 2.4.2 branch released 2017-03-08
Andres AG703990b2016-10-24 11:23:36 +01004157
Janos Follath182013f2016-10-25 10:50:22 +01004158Security
Simon Butcherb65c2be2017-03-10 18:50:44 +00004159 * Add checks to prevent signature forgeries for very large messages while
4160 using RSA through the PK module in 64-bit systems. The issue was caused by
4161 some data loss when casting a size_t to an unsigned int value in the
4162 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
4163 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
Andres AG939954c2016-12-08 17:08:44 +00004164 * Fixed potential livelock during the parsing of a CRL in PEM format in
4165 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
4166 characters after the footer could result in the execution of an infinite
4167 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
4168 Microsoft.
Janos Follath182013f2016-10-25 10:50:22 +01004169 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
4170 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
Simon Butcher0621b1f2017-02-05 16:48:47 +00004171 Introduced by interoperability fix for #513.
Janos Follath7dadc2f2017-01-27 16:05:20 +00004172 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
4173 when verifying the validity of a key on secp224k1. This could be
4174 triggered remotely for example with a maliciously constructed certificate
Simon Butcher71e9d582017-02-28 18:47:27 +00004175 and potentially could lead to remote code execution on some platforms.
Simon Butcher8b987502017-03-07 12:37:14 +00004176 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
4177 team. #569 CVE-2017-2784
Janos Follath7dadc2f2017-01-27 16:05:20 +00004178
Andres AG703990b2016-10-24 11:23:36 +01004179Bugfix
Andres AGd1650662016-12-09 17:26:23 +00004180 * Fix output certificate verification flags set by x509_crt_verify_top() when
4181 traversing a chain of trusted CA. The issue would cause both flags,
4182 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
4183 set when the verification conditions are not met regardless of the cause.
4184 Found by Harm Verhagen and inestlerode. #665 #561
Simon Butcherd57c8f02017-02-02 13:08:37 +00004185 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
4186 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
4187 Found by omlib-lin. #673
Andres AGc0db5112016-12-07 15:05:53 +00004188 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
4189 x509_csr.c that are reported when building mbed TLS with a config.h that
Simon Butchera333b3c2017-02-02 16:17:37 +00004190 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
Andres AG2196c7f2016-12-15 17:01:16 +00004191 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
4192 would compare 64 bits of the record counter instead of 48 bits as indicated
4193 in RFC 6347 Section 4.3.1. This could cause the execution of the
4194 renegotiation routines at unexpected times when the protocol is DTLS. Found
4195 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01004196 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres AG9c94b692016-10-24 14:31:54 +01004197 the input string in PEM format to extract the different components. Found
Andres AG703990b2016-10-24 11:23:36 +01004198 by Eyal Itkin.
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00004199 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
4200 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
4201 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
4202 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
4203 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
4204 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00004205 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
4206 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00004207 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
4208 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Andres AG5708dcb2016-12-08 17:19:21 +00004209 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
4210 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcherd02dc142017-02-28 16:36:22 +00004211 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
4212 fix proposed by Guido Vranken. #722
Simon Butcher956c58f2017-03-02 09:18:09 +00004213 * Fixed the templates used to generate project and solution files for Visual
4214 Studio 2015 as well as the files themselves, to remove a build warning
4215 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Ron Eldor12e0b802017-01-29 18:51:35 +02004216 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
4217 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
Andres AGd1cc7f62017-01-06 13:17:35 +00004218 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
4219 number to write in hexadecimal is negative and requires an odd number of
4220 digits. Found and fixed by Guido Vranken.
Simon Butcher81cf88f2017-03-07 19:35:49 +00004221 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
4222 by inestlerode. #555
Andres AG703990b2016-10-24 11:23:36 +01004223
Janos Follath4c006cd2016-12-13 14:14:03 +00004224= mbed TLS 2.4.1 branch released 2016-12-13
Janos Follath5da3a6f2016-12-13 11:51:04 +00004225
4226Changes
4227 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
4228 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
4229 Authentication – October 2016
4230
Simon Butcher19dbd412016-10-16 19:35:49 +01004231= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butchercf8c1f42016-09-02 21:29:39 +03004232
Andres AG60dbc932016-09-02 15:23:48 +01004233Security
Simon Butcheref8fa012016-10-16 00:44:08 +01004234 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
4235 with RFC-5116 and could lead to session key recovery in very long TLS
4236 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
4237 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
4238 https://eprint.iacr.org/2016/475.pdf
4239 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Andres AG60dbc932016-09-02 15:23:48 +01004240 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AGe0af9952016-09-07 11:09:44 +01004241 without checking whether there is enough space in the destination. The
Simon Butcheref8fa012016-10-16 00:44:08 +01004242 issue cannot be triggered remotely. Found by Jethro Beekman.
Andres AG60dbc932016-09-02 15:23:48 +01004243
Simon Butchercf8c1f42016-09-02 21:29:39 +03004244Features
Simon Butcher21c54812016-10-05 14:17:37 +01004245 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
4246 NIST SP 800-38B, RFC-4493 and RFC-4615.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004247 * Added hardware entropy selftest to verify that the hardware entropy source
4248 is functioning correctly.
4249 * Added a script to print build environment info for diagnostic use in test
4250 scripts, which is also now called by all.sh.
Andres AGf9113192016-09-02 14:06:04 +01004251 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
4252 configure the maximum length of a file path that can be buffered when
4253 calling mbedtls_x509_crt_parse_path().
Simon Butcheref8fa012016-10-16 00:44:08 +01004254 * Added a configuration file config-no-entropy.h that configures the subset of
Andres AGf84f8922016-09-19 15:33:30 +01004255 library features that do not require an entropy source.
Andres AG7abc9742016-09-23 17:58:49 +01004256 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
4257 to configure the minimum number of bytes for entropy sources using the
4258 mbedtls_hardware_poll() function.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004259
4260Bugfix
4261 * Fix for platform time abstraction to avoid dependency issues where a build
4262 may need time but not the standard C library abstraction, and added
4263 configuration consistency checks to check_config.h
4264 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butcheref8fa012016-10-16 00:44:08 +01004265 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
4266 when GCM is used. Found by udf2457. #441
Simon Butchercad6e932016-09-05 01:46:59 +03004267 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
4268 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcherc0d76b82016-09-07 17:25:16 +03004269 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
4270 a contribution from Tobias Tangemann. #541
Simon Butcheref8fa012016-10-16 00:44:08 +01004271 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcherd43fb952016-09-26 20:48:56 +01004272 certificates are provided.
Andres AG776a6fc2016-09-26 09:52:41 +01004273 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcher3a5e0702016-10-12 16:37:59 +01004274 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcher851ae292016-10-11 10:13:52 +01004275 * Fixed pthread implementation to avoid unintended double initialisations
Simon Butcheref8fa012016-10-16 00:44:08 +01004276 and double frees. Found by Niklas Amnebratt.
Simon Butcherf77309c2016-10-07 15:56:07 +01004277 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
4278 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
4279 by inestlerode. #559.
Andres AG4bdbe092016-09-19 16:58:45 +01004280 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
4281 data structure until after error checks are successful. Found by
Simon Butcherb81496b2016-10-13 14:03:37 +01004282 subramanyam-c. #622
Andres AG821da842016-09-26 10:09:30 +01004283 * Fix documentation and implementation missmatch for function arguments of
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01004284 mbedtls_gcm_finish(). Found by cmiatpaar. #602
Simon Butcher4d69ecd2016-10-13 00:14:37 +01004285 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG5a87c932016-09-26 14:53:05 +01004286 * Fix potential byte overread when verifying malformed SERVER_HELLO in
4287 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Andres AG4b76aec2016-09-23 13:16:02 +01004288 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
Simon Butcher2bd0fba2016-10-13 16:29:56 +01004289 Found by subramanyam-c. #626
Simon Butcher99000142016-10-13 17:21:01 +01004290 * Fix compatibility issue with Internet Explorer client authentication,
4291 where the limited hash choices prevented the client from sending its
4292 certificate. Found by teumas. #513
Janos Follath240f1852016-10-14 15:23:21 +01004293 * Fix compilation without MBEDTLS_SELF_TEST enabled.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004294
4295Changes
4296 * Extended test coverage of special cases, and added new timing test suite.
4297 * Removed self-tests from the basic-built-test.sh script, and added all
4298 missing self-tests to the test suites, to ensure self-tests are only
4299 executed once.
4300 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
4301 * Added support for a Yotta specific configuration file -
4302 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Simon Butcher5908bcc2016-09-04 15:12:09 +01004303 * Added optimization for code space for X.509/OID based on configured
Simon Butcheref8fa012016-10-16 00:44:08 +01004304 features. Contributed by Aviv Palivoda.
Andres AG788aa4a2016-09-14 14:32:09 +01004305 * Renamed source file library/net.c to library/net_sockets.c to avoid
4306 naming collision in projects which also have files with the common name
4307 net.c. For consistency, the corresponding header file, net.h, is marked as
4308 deprecated, and its contents moved to net_sockets.h.
Simon Butcher59bffa22016-10-13 15:55:56 +01004309 * Changed the strategy for X.509 certificate parsing and validation, to no
4310 longer disregard certificates with unrecognised fields.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004311
Simon Butcher46125fb2016-06-27 19:43:55 +01004312= mbed TLS 2.3.0 branch released 2016-06-28
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004313
Janos Follathcc4eba72016-02-10 16:25:55 +00004314Security
Janos Follathe43b81a2016-02-10 16:25:55 +00004315 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
Janos Follath3218b212016-02-10 16:14:10 +00004316 required by PKCS1 v2.2
Janos Follathe43b81a2016-02-10 16:25:55 +00004317 * Fix potential integer overflow to buffer overflow in
4318 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01004319 (not triggerable remotely in (D)TLS).
Hanno Becker01a0e072017-07-26 11:49:40 +01004320 * Fix a potential integer underflow to buffer overread in
Janos Follathbc247c92016-02-11 11:15:44 +00004321 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
4322 SSL/TLS.
Janos Follathcc4eba72016-02-10 16:25:55 +00004323
Simon Butcher3fe6cd32016-04-26 19:51:29 +01004324Features
4325 * Support for platform abstraction of the standard C library time()
4326 function.
4327
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004328Bugfix
4329 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
4330 arguments where the same (in-place doubling). Found and fixed by Janos
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01004331 Follath. #309
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00004332 * Fix potential build failures related to the 'apidoc' target, introduced
4333 in the previous patch release. Found by Robert Scheck. #390 #391
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01004334 * Fix issue in Makefile that prevented building using armar. #386
Antonin Décimo36e89b52019-01-23 15:24:37 +01004335 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
Janos Follath4ae5c292016-02-10 11:27:43 +00004336 ECDSA was disabled in config.h . The leak didn't occur by default.
Simon Butcherf59e66b2016-03-01 20:26:16 +00004337 * Fix an issue that caused valid certificates to be rejected whenever an
4338 expired or not yet valid certificate was parsed before a valid certificate
4339 in the trusted certificate list.
Hanno Becker01a0e072017-07-26 11:49:40 +01004340 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follathcc0e49d2016-02-17 14:34:12 +00004341 buffer after DER certificates to be included in the raw representation.
Simon Butcher3f5c8752016-04-15 19:06:59 +01004342 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath1ed9f992016-03-18 11:45:44 +00004343 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
4344 dereference possible.
Janos Follath8a317052016-04-21 23:37:09 +01004345 * Fix issue that caused a crash if invalid curves were passed to
4346 mbedtls_ssl_conf_curves. #373
Simon Butcherf8935072016-04-29 00:05:32 +01004347 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Paul Bakker8f0e4c22016-05-12 16:38:27 +01004348 * Fix memory leaks in test framework
Paul Bakkerf8e37942016-05-13 10:50:41 +01004349 * Fix test in ssl-opt.sh that does not run properly with valgrind
Simon Butcher46125fb2016-06-27 19:43:55 +01004350 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004351
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01004352Changes
4353 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
4354 don't use the optimized assembly for bignum multiplication. This removes
4355 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
Simon Butcherd7e9ad72016-04-25 16:07:12 +01004356 * Disabled SSLv3 in the default configuration.
Simon Butchera543d112016-04-26 12:51:37 +01004357 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
4358 Skalozub).
Janos Follathc6dab2b2016-05-23 14:27:02 +01004359 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
4360 ignored, as required by RFC6101.
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01004361
4362= mbed TLS 2.2.1 released 2016-01-05
4363
4364Security
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01004365 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01004366 allocate memory. Only used for certificate generation, not triggerable
Simon Butcher00923c12015-12-22 19:04:24 +00004367 remotely in SSL/TLS. Found by Rafał Przywara. #367
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01004368 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
4369 SLOTH attack on TLS 1.2 server authentication (other attacks from the
4370 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01004371 https://www.mitls.org/pages/attacks/SLOTH
Simon Butcher1285ab52016-01-01 21:42:47 +00004372
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01004373Bugfix
4374 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
4375 * Fix bug in certificate validation that caused valid chains to be rejected
4376 when the first intermediate certificate has pathLenConstraint=0. Found by
4377 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher207990d2015-12-16 01:51:30 +00004378 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Simon Butcher8254ed22015-11-04 11:04:00 +00004379 JayaraghavendranK. #372
Simon Butcher04799a42015-09-29 00:31:09 +01004380 * Fix suboptimal handling of unexpected records that caused interop issues
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004381 with some peers over unreliable links. Avoid dropping an entire DTLS
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02004382 datagram if a single record in a datagram is unexpected, instead only
4383 drop the record and look at subsequent records (if any are present) in
4384 the same datagram. Found by jeannotlapin. #345
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02004385
4386= mbed TLS 2.2.0 released 2015-11-04
Simon Butcher59a8fa72015-11-03 23:09:28 +00004387
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02004388Security
4389 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
4390 once and some allocation fails. Cannot be forced remotely. Found by Guido
Simon Butcher59a8fa72015-11-03 23:09:28 +00004391 Vranken, Intelworks.
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004392 * Fix potential heap corruption on Windows when
4393 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
4394 triggered remotely. Found by Guido Vranken, Intelworks.
4395 * Fix potential buffer overflow in some asn1_write_xxx() functions.
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02004396 Cannot be triggered remotely unless you create X.509 certificates based
4397 on untrusted input or write keys of untrusted origin. Found by Guido
4398 Vranken, Intelworks.
4399 * The X509 max_pathlen constraint was not enforced on intermediate
4400 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02004401 Janos Follath. #280 and #319
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004402
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004403Features
4404 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
4405 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004406 * Added a key extraction callback to accees the master secret and key
4407 block. (Potential uses include EAP-TLS and Thread.)
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02004408
4409Bugfix
Simon Butcher62aab152015-10-27 16:05:34 +00004410 * Self-signed certificates were not excluded from pathlen counting,
4411 resulting in some valid X.509 being incorrectly rejected. Found and fix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02004412 provided by Janos Follath. #319
4413 * Fix build error with configurations where ECDHE-PSK is the only key
4414 exchange. Found and fix provided by Chris Hammond. #270
Simon Butcher5f7c34b2015-10-27 15:14:55 +00004415 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02004416 ECHD-ECDSA if the only key exchange. Multiple reports. #310
4417 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02004418 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09004419 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
4420 size/curve against the profile. Before that, there was no way to set a
4421 minimum key size for end-entity certificates with RSA keys. Found by
Simon Butcher5f7c34b2015-10-27 15:14:55 +00004422 Matthew Page of Scannex Electronics Ltd.
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01004423 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
4424 Found by Kurt Danielson. #292
4425 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004426 * Fix bug in ASN.1 encoding of booleans that caused generated CA
4427 certificates to be rejected by some applications, including OS X
4428 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcher04799a42015-09-29 00:31:09 +01004429
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01004430Changes
Simon Butcherc48b66b2015-10-05 10:18:17 +01004431 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
4432 or -1.
Simon Butcher5b8d1d62015-10-04 22:06:51 +01004433
4434= mbed TLS 2.1.2 released 2015-10-06
Simon Butcherc48b66b2015-10-05 10:18:17 +01004435
4436Security
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02004437 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
4438 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01004439 Intelworks.
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02004440 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
Simon Butcherc48b66b2015-10-05 10:18:17 +01004441 once in the same handhake and mbedtls_ssl_conf_psk() was used.
4442 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
4443 remotely.
4444 * Fix stack buffer overflow in pkcs12 decryption (used by
Simon Butchera45aa132015-10-05 00:26:36 +01004445 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
Simon Butcherc48b66b2015-10-05 10:18:17 +01004446 Found by Guido Vranken, Intelworks. Not triggerable remotely.
4447 * Fix potential buffer overflow in mbedtls_mpi_read_string().
4448 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
4449 of TLS, but might be in other uses. On 32 bit machines, requires reading a
4450 string of close to or larger than 1GB to exploit; on 64 bit machines, would
4451 require reading a string of close to or larger than 2^62 bytes.
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02004452 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Simon Butcherfec73a82015-10-05 10:40:31 +01004453 on crafted PEM input data. Found and fix provided by Guido Vranken,
4454 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02004455 accept PEM data from an untrusted source.
4456 * Fix possible heap buffer overflow in base64_encoded() when the input
4457 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Simon Butcher475cf0a2015-10-05 11:57:54 +01004458 Intelworks. Not trigerrable remotely in TLS.
Simon Butcher04799a42015-09-29 00:31:09 +01004459 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01004460 the same mbedtls_ssl_config object and memory allocation fails. Found by
4461 Guido Vranken, Intelworks. Cannot be forced remotely.
4462 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher7776fc32015-10-05 15:44:18 +01004463 authentication against a crafted CA cert. Cannot be triggered remotely
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01004464 unless you allow third parties to pick trust CAs for client auth.
Simon Butcher04799a42015-09-29 00:31:09 +01004465 Found by Guido Vranken, Intelworks.
4466
4467Bugfix
Simon Butchera12e3c02015-10-01 01:59:33 +01004468 * Fix compile error in net.c with musl libc. Found and patch provided by
4469 zhasha (#278).
Simon Butcher04799a42015-09-29 00:31:09 +01004470 * Fix macroization of 'inline' keyword when building as C++. (#279)
Simon Butcher5624ec82015-09-29 01:06:06 +01004471
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004472Changes
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02004473 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
4474 domain names are compliant with RFC 1035.
4475 * Fixed paths for check_config.h in example config files. (Found by bachp)
4476 (#291)
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004477
4478= mbed TLS 2.1.1 released 2015-09-17
Simon Butcher5b8d1d62015-10-04 22:06:51 +01004479
4480Security
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004481 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Simon Butchera1a11282015-09-14 21:30:40 +01004482 signatures. (Found by Florian Weimer, Red Hat.)
4483 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02004484 * Fix possible client-side NULL pointer dereference (read) when the client
4485 tries to continue the handshake after it failed (a misuse of the API).
4486 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
Simon Butcherd69f14b2015-09-11 20:00:20 +01004487 afl-fuzz.)
4488
4489Bugfix
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02004490 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
4491 * Fix off-by-one error in parsing Supported Point Format extension that
4492 caused some handshakes to fail.
4493
4494Changes
4495 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
4496 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Simon Butcherd69f14b2015-09-11 20:00:20 +01004497 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004498 connection, if cookie verification is available
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02004499 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004500 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02004501 detected and mbedtls_ssl_read() will return
4502 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004503 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004504
4505= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02004506
4507Features
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02004508 * Added support for yotta as a build system.
4509 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004510
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02004511Bugfix
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004512 * Fix segfault in the benchmark program when benchmarking DHM.
4513 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02004514 Leisink).
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02004515 * Fix bug when parsing a ServerHello without extensions (found by David
4516 Sears).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02004517 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
4518 (found by Benoit Lecocq).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02004519 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
4520 installed (found by Rawi666).
4521 * Fix compile error with armcc 5 with --gnu option.
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02004522 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02004523 (found by robotanarchy) (#232).
4524 * Fix bug in Makefile that prevented from installing without building the
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02004525 tests (found by robotanarchy) (#232).
4526 * Fix missing -static-libgcc when building shared libraries for Windows
4527 with make.
Simon Butcher52754592015-09-03 13:06:01 +01004528 * Fix link error when building shared libraries for Windows with make.
4529 * Fix error when loading libmbedtls.so.
4530 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
4531 be always used (found by dcb314) (#235)
4532 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
4533 result trying to unlock an unlocked mutex on invalid input (found by
4534 Fredrik Axelsson) (#257)
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004535 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02004536 * Fix memory corruption on client with overlong PSK identity, around
4537 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004538 Aleksandrs Saveljevs) (#238)
4539 * Fix unused function warning when using MBEDTLS_MDx_ALT or
4540 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02004541 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
4542
4543Changes
Simon Butcher52754592015-09-03 13:06:01 +01004544 * The PEM parser now accepts a trailing space at end of lines (#226).
4545 * It is now possible to #include a user-provided configuration file at the
4546 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
4547 compiler's command line.
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004548 * When verifying a certificate chain, if an intermediate certificate is
Paul Bakker4cb87f42015-07-10 14:09:43 +01004549 trusted, no later cert is checked. (suggested by hannes-landeholm)
Paul Bakker9c5898f2015-02-16 16:18:33 +01004550 (#220).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004551 * Prepend a "thread identifier" to debug messages (issue pointed out by
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02004552 Hugo Leisink) (#210).
4553 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
4554 length.
4555
4556= mbed TLS 2.0.0 released 2015-07-13
4557
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004558Features
4559 * Support for DTLS 1.0 and 1.2 (RFC 6347).
4560 * Ability to override core functions from MDx, SHAx, AES and DES modules
4561 with custom implementation (eg hardware accelerated), complementing the
4562 ability to override the whole module.
4563 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02004564 preserve forward secrecy, and allows sharing across multiple contexts.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004565 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02004566 which algorithms and key sizes (curves for ECDSA) are acceptable.
4567 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004568 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01004569 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004570 parameters.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01004571
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02004572API Changes
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02004573 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
4574 You now need to link to all of them if you use TLS for example.
4575 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004576 Some names have been further changed to make them more consistent.
Antonin Décimo36e89b52019-01-23 15:24:37 +01004577 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004578 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02004579 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02004580 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02004581 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02004582 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02004583 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02004584 * The following _init() functions that could return errors have
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02004585 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02004586 should generally be the first function called on this context after init:
4587 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02004588 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
4589 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004590 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004591 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
Tillmann Karras588ad502015-09-25 04:27:22 +02004592 Note that for mbedtls_ssl_setup(), you need to be done setting up the
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004593 ssl_config structure before calling it.
4594 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
4595 ssl_set_session() and ssl_set_client_transport_id(), plus
4596 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02004597 (see rename.pl and compat-1.3.h above) and their first argument's type
4598 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004599 * ssl_set_bio() changed signature (contexts merged, order switched, one
4600 additional callback for read-with-timeout).
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02004601 * The following functions have been introduced and must be used in callback
4602 implementations (SNI, PSK) instead of their *conf counterparts:
4603 mbedtls_ssl_set_hs_own_cert()
4604 mbedtls_ssl_set_hs_ca_chain()
4605 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004606 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01004607 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004608 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01004609 pointer, parameters reordered).
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02004610 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
4611 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02004612 * The SSL debug callback gained two new arguments (file name, line number).
4613 * Debug modes were removed.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004614 * mbedtls_ssl_conf_truncated_hmac() now returns void.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004615 * mbedtls_memory_buffer_alloc_init() now returns void.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02004616 * X.509 verification flags are now an uint32_t. Affect the signature of:
4617 mbedtls_ssl_get_verify_result()
4618 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004619 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02004620 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01004621 * The following functions changed prototype to avoid an in-out length
4622 parameter:
4623 mbedtls_base64_encode()
4624 mbedtls_base64_decode()
4625 mbedtls_mpi_write_string()
4626 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02004627 * In the NET module, all "int" and "int *" arguments for file descriptors
4628 changed type to "mbedtls_net_context *".
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02004629 * net_accept() gained new arguments for the size of the client_ip buffer.
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02004630 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
4631 return void.
Antonin Décimo36e89b52019-01-23 15:24:37 +01004632 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02004633 ecdsa_write_signature_det() was deprecated.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02004634 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02004635 * Last argument of x509_crt_check_key_usage() and
4636 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01004637 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
4638 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
4639 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01004640 strings; use the new *_len variables instead of strlen().
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02004641 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
4642 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
4643 length parameter to include the terminating null byte for PEM input.
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00004644 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02004645 * calloc() is now used instead of malloc() everywhere. API of platform
4646 layer and the memory_buffer_alloc module changed accordingly.
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02004647 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004648 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
4649 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02004650 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
4651 in config.h
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004652 * net_connect() and net_bind() have a new 'proto' argument to choose
4653 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02004654 Their 'port' argument type is changed to a string.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004655 * Some constness fixes
4656
4657Removals
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02004658 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02004659 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
4660 mbedtls_ecp_muladd().
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02004661 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
4662 (use generic functions from md.h)
4663 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02004664 waiting function.
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02004665 * Removed test DHM parameters from the test certs module.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004666 * Removed the PBKDF2 module (use PKCS5).
4667 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
4668 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
4669 * Removed openssl.h (very partial OpenSSL compatibility layer).
4670 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
4671 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
4672 been removed (compiler is required to support 32-bit operations).
4673 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
4674 * Removed test program o_p_test, the script compat.sh does more.
4675 * Removed test program ssl_test, superseded by ssl-opt.sh.
4676 * Removed helper script active-config.pl
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004677
4678New deprecations
4679 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
4680 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004681
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004682Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004683 * Renamed a few headers to include _internal in the name. Those headers are
4684 not supposed to be included by users.
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02004685 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
4686 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004687 * Changed cipher_base_t into an opaque structure.
4688 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01004689 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004690 * Removed r and s from ecdsa_context
4691 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004692
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004693Default behavior changes
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02004694 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004695 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
4696 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004697 * Support for receiving SSLv2 ClientHello is now disabled by default at
4698 compile time.
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01004699 * The default authmode for SSL/TLS clients is now REQUIRED.
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02004700 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
4701 enabled in the default configuration, this is only noticeable if using a
4702 custom config.h
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01004703 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004704 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
4705 chain verification.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01004706 * Negotiation of truncated HMAC is now disabled by default on server too.
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02004707 * The following functions are now case-sensitive:
4708 mbedtls_cipher_info_from_string()
4709 mbedtls_ecp_curve_info_from_name()
4710 mbedtls_md_info_from_string()
4711 mbedtls_ssl_ciphersuite_from_string()
4712 mbedtls_version_check_feature()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004713
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02004714Requirement changes
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02004715 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02004716 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01004717 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004718
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004719API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01004720 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
4721 new prototype, and mbedtls_ssl_set_read_timeout().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004722 * The following functions now return void:
4723 mbedtls_ssl_conf_transport()
4724 mbedtls_ssl_conf_max_version()
4725 mbedtls_ssl_conf_min_version()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02004726 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
4727 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
4728 an example implementation, see mbedtls_timing_delay_context and
4729 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02004730 * With UDP sockets, it is no longer necessary to call net_bind() again
4731 after a successful net_accept().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01004732
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01004733Changes
4734 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
4735 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004736 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
4737 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01004738
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004739= mbed TLS 1.3 branch
4740
4741Security
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02004742 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01004743 extendedKeyUsage on the leaf certificate was lost (results not accessible
4744 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02004745 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
4746 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004747
4748Features
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02004749 * Improve ECC performance by using more efficient doubling formulas
4750 (contributed by Peter Dettman).
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02004751 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02004752 * Add support for reading DH parameters with privateValueLength included
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02004753 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01004754 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
4755 * Add support for id-at-uniqueIdentifier in X.509 names.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00004756 * Add support for overriding snprintf() (except on Windows) and exit() in
4757 the platform layer.
4758 * Add an option to use macros instead of function pointers in the platform
4759 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00004760 * Improved Makefiles for Windows targets by fixing library targets and making
4761 cross-compilation easier (thanks to Alon Bar-Lev).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00004762 * The benchmark program also prints heap usage for public-key primitives
4763 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
4764 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
4765 speed and RAM (heap only for now) usage.
4766 * New script memory.sh helps measuring the ROM and RAM requirements of two
4767 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004768 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01004769 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004770 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01004771 errors on use of deprecated functions.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004772
4773Bugfix
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01004774 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01004775 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01004776 * Fix bug in entropy.c when THREADING_C is also enabled that caused
4777 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02004778 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
4779 once on the same context.
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02004780 * Fix bug in ssl_mail_client when password is longer that username (found
4781 by Bruno Pape).
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02004782 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
4783 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02004784 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
4785 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02004786 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
4787 doing it at runtime (using uname) rather that compile time.
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02004788 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02004789 * Fix potential NULL pointer dereference (not trigerrable remotely) when
4790 ssl_write() is called before the handshake is finished (introduced in
4791 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02004792 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
4793 rejected.
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01004794 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01004795 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00004796 * Fix hardclock() (only used in the benchmarking program) with some
4797 versions of mingw64 (found by kxjhlele).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00004798 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00004799 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
4800 platforms.
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00004801 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00004802 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
4803 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
4804 in 1.3.10).
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00004805 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02004806 * Add missing dependency on SHA-256 in some x509 programs (reported by
4807 Gergely Budai).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02004808 * Fix bug related to ssl_set_curves(): the client didn't check that the
4809 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004810
4811Changes
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02004812 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
4813 * Remove potential sources of timing variations (some contributed by Pascal
4814 Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02004815 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02004816 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004817 * compat-1.2.h and openssl.h are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02004818 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00004819 more flexible (warning: OFLAGS is not used any more) (see the README)
4820 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02004821 * ssl_set_own_cert() no longer calls pk_check_pair() since the
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00004822 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00004823 * Move from SHA-1 to SHA-256 in example programs using signatures
4824 (suggested by Thorsten Mühlfelder).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00004825 * Remove some unneeded inclusions of header files from the standard library
4826 "minimize" others (eg use stddef.h if only size_t is needed).
4827 * Change #include lines in test files to use double quotes instead of angle
4828 brackets for uniformity with the rest of the code.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00004829 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02004830
Paul Bakkerdaae3b72015-02-08 15:49:54 +01004831= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004832Security
4833 * NULL pointer dereference in the buffer-based allocator when the buffer is
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00004834 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004835 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
4836 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004837 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01004838 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004839 client certificate) (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01004840 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01004841 (TLS server is not affected if it doesn't ask for a client certificate)
4842 (found using Codenomicon Defensics).
4843 * Fix potential stack overflow while parsing crafted X.509 certificates
4844 (TLS server is not affected if it doesn't ask for a client certificate)
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01004845 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00004846 * Fix timing difference that could theoretically lead to a
4847 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
4848 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004849
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004850Features
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004851 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
4852 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
4853 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004854 * Add function pk_check_pair() to test if public and private keys match.
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01004855 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01004856 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
4857 length of an X.509 verification chain.
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01004858 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01004859 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Paul Bakker6152b022015-04-14 15:00:09 +02004860 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01004861 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01004862 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
4863 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004864 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01004865 while using the default ciphersuite list.
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00004866 * Added new error codes and debug messages about selection of
4867 ciphersuite/certificate.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004868
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01004869Bugfix
4870 * Stack buffer overflow if ctr_drbg_update() is called with too large
4871 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01004872 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
4873 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004874 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
4875 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01004876 by Julian Ospald).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01004877 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01004878 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
4879 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00004880 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
4881 Peter Vaskovic).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00004882 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00004883 * ssl_get_verify_result() now works even if the handshake was aborted due
4884 to a failed verification (found by Fredrik Axelsson).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00004885 * Skip writing and parsing signature_algorithm extension if none of the
4886 key exchanges enabled needs certificates. This fixes a possible interop
4887 issue with some servers when a zero-length extension was sent. (Reported
4888 by Peter Dettman.)
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00004889 * On a 0-length input, base64_encode() did not correctly set output length
4890 (found by Hendrik van den Boogaard).
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01004891
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01004892Changes
4893 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
4894 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01004895 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004896 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01004897 * Forbid repeated extensions in X.509 certificates.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01004898 * debug_print_buf() now prints a text view in addition to hexadecimal.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01004899 * A specific error is now returned when there are ciphersuites in common
4900 but none of them is usable due to external factors such as no certificate
Paul Bakkere522d0f2015-01-14 16:12:48 +01004901 with a suitable (extended)KeyUsage or curve or no PSK set.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004902 * It is now possible to disable negotiation of truncated HMAC server-side
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01004903 at runtime with ssl_set_truncated_hmac().
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01004904 * Example programs for SSL client and server now disable SSLv3 by default.
4905 * Example programs for SSL client and server now disable RC4 by default.
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00004906 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01004907
Paul Bakker9eac4f72014-10-20 13:56:15 +02004908= PolarSSL 1.3.9 released 2014-10-20
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02004909Security
4910 * Lowest common hash was selected from signature_algorithms extension in
4911 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02004912 * Remotely-triggerable memory leak when parsing some X.509 certificates
Paul Bakkerb082bb52014-10-20 13:37:51 +02004913 (server is not affected if it doesn't ask for a client certificate)
4914 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02004915 * Remotely-triggerable memory leak when parsing crafted ClientHello
Paul Bakkerb082bb52014-10-20 13:37:51 +02004916 (not affected if ECC support was compiled out) (found using Codenomicon
4917 Defensics).
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02004918
Paul Bakker8dcb2d72014-08-08 12:22:30 +02004919Bugfix
4920 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02004921 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02004922 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02004923 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02004924 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02004925 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
4926 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02004927 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02004928 * ssl_read() could return non-application data records on server while
4929 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02004930 * Server-initiated renegotiation would fail with non-blocking I/O if the
4931 write callback returned WANT_WRITE when requesting renegotiation.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02004932 * ssl_close_notify() could send more than one message in some circumstances
4933 with non-blocking I/O.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02004934 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Paul Bakker5a5fa922014-09-26 14:53:04 +02004935 * x509_crt_parse() did not increase total_failed on PEM error
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02004936 * Fix compile error with armcc in mpi_is_prime()
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02004937 * Fix potential bad read in parsing ServerHello (found by Adrien
4938 Vialletelle).
Paul Bakker8dcb2d72014-08-08 12:22:30 +02004939
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02004940Changes
4941 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
4942 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02004943 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
4944 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02004945 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
4946 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02004947 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
4948 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02004949 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
4950 RSA keys.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02004951 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02004952 * X.509 certificates with more than one AttributeTypeAndValue per
4953 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02004954
Paul Bakker1910aa72014-07-11 11:28:56 +02004955= PolarSSL 1.3.8 released 2014-07-11
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02004956Security
4957 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
4958 It was possible to crash the server (and client) using crafted messages
4959 when a GCM suite was chosen.
4960
Paul Bakkerc6ece492014-05-22 15:45:03 +02004961Features
4962 * Add CCM module and cipher mode to Cipher Layer
4963 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02004964 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
4965 modules (certificates, CRLs and CSRs).
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02004966 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02004967 * Add example config.h for PSK with CCM, optimized for low RAM usage.
4968 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02004969 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
4970 from the default list (inactive by default).
Paul Bakker23647b42014-07-04 15:00:12 +02004971 * Add server-side enforcement of sent renegotiation requests
4972 (ssl_set_renegotiation_enforced())
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02004973 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
4974 ciphersuites to use and save some memory if the list is small.
Paul Bakkerc6ece492014-05-22 15:45:03 +02004975
Paul Bakker863989b2014-06-12 21:49:01 +02004976Changes
4977 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
4978 required on some platforms (e.g. OpenBSD)
Paul Bakker34617722014-06-13 17:20:13 +02004979 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
4980 against unwanted compiler optimizations
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02004981 * md_list() now returns hashes strongest first
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02004982 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
4983 strongest offered by client.
Paul Bakker28476e22014-07-01 15:59:04 +02004984 * All public contexts have _init() and _free() functions now for simpler
4985 usage pattern
Paul Bakker863989b2014-06-12 21:49:01 +02004986
Paul Bakker5593f7c2014-05-06 10:29:28 +02004987Bugfix
4988 * Fix in debug_print_msg()
Paul Bakker1ebc0c52014-05-22 15:47:58 +02004989 * Enforce alignment in the buffer allocator even if buffer is not aligned
Paul Bakkerdff31392014-05-22 15:06:41 +02004990 * Remove less-than-zero checks on unsigned numbers
Paul Bakker0f651c72014-05-22 15:12:19 +02004991 * Stricter check on SSL ClientHello internal sizes compared to actual packet
4992 size (found by TrustInSoft)
Paul Bakker49033ba2014-06-12 21:46:13 +02004993 * Fix WSAStartup() return value check (found by Peter Vaskovic)
4994 * Other minor issues (found by Peter Vaskovic)
4995 * Fix symlink command for cross compiling with CMake (found by Andre
4996 Heinecke)
Paul Bakker3c38f292014-06-13 17:37:46 +02004997 * Fix DER output of gen_key app (found by Gergely Budai)
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02004998 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02004999 use with some ciphersuites and versions (RC4 in all versions, CBC with
5000 versions < TLS 1.1).
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02005001 * Very large records using more than 224 bytes of padding were incorrectly
5002 rejected with CBC-based ciphersuites and TLS >= 1.1
5003 * Very large records using less padding could cause a buffer overread of up
5004 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02005005 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
5006 been removed in 1.3.6.)
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02005007 * Restore ability to locally trust a self-signed cert that is not a proper
5008 CA for use as an end entity certificate. (This had been removed in
5009 1.3.6.)
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07005010 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02005011 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
5012 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02005013 * Fix off-by-one error in parsing Supported Point Format extension that
5014 caused some handshakes to fail.
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02005015 * Fix possible miscomputation of the premaster secret with DHE-PSK key
5016 exchange that caused some handshakes to fail with other implementations.
5017 (Failure rate <= 1/255 with common DHM moduli.)
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02005018 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakkerd5983182014-07-04 13:50:31 +02005019 * Fix base64_decode() to return and check length correctly (in case of
5020 tight buffers)
Paul Bakker6c343d72014-07-10 14:36:19 +02005021 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
5022 by Hui Dong)
Paul Bakker5593f7c2014-05-06 10:29:28 +02005023
Paul Bakker47431b62014-05-02 13:27:13 +02005024= PolarSSL 1.3.7 released on 2014-05-02
Paul Bakkereaebbd52014-04-25 15:04:14 +02005025Features
Paul Bakkerc73079a2014-04-25 16:34:30 +02005026 * debug_set_log_mode() added to determine raw or full logging
5027 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker0f90d7d2014-04-30 11:49:44 +02005028 * version_check_feature() added to check for compile-time options at
5029 run-time
Paul Bakker92478c32014-04-25 15:18:34 +02005030
Paul Bakker088c5c52014-04-25 11:11:10 +02005031Changes
5032 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
5033 checked and filled in the relevant module headers
Paul Bakker92478c32014-04-25 15:18:34 +02005034 * Debug module only outputs full lines instead of parts
Paul Bakker63844402014-04-30 15:34:12 +02005035 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02005036 * AES-NI now compiles with "old" assemblers too
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02005037 * Ciphersuites based on RC4 now have the lowest priority by default
Paul Bakker088c5c52014-04-25 11:11:10 +02005038
Paul Bakkere92f73d2014-04-18 14:08:26 +02005039Bugfix
5040 * Only iterate over actual certificates in ssl_write_certificate_request()
5041 (found by Matthew Page)
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02005042 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
5043 Karger)
Paul Bakkerfdba4682014-04-25 11:48:35 +02005044 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakker61885c72014-04-25 12:59:03 +02005045 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
5046 ciphersuites, for full SSL frames of data.
Paul Bakkera7036632014-04-30 10:15:38 +02005047 * Improve interoperability by not writing extension length in ClientHello /
5048 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker24f37cc2014-04-30 13:33:35 +02005049 * rsa_check_pubkey() now allows an E up to N
Paul Bakkerf96f7b62014-04-30 16:02:38 +02005050 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Paul Bakker33dc46b2014-04-30 16:11:39 +02005051 * mpi_fill_random() was creating numbers larger than requested on
5052 big-endian platform when size was not an integer number of limbs
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02005053 * Fix dependencies issues in X.509 test suite.
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02005054 * Some parts of ssl_tls.c were compiled even when the module was disabled.
Markus Pfeiffera26a0052014-04-22 20:16:15 +00005055 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Barry K. Nathancf975f52014-04-23 17:40:25 -07005056 * Fix detection of Clang on some Apple platforms with CMake
5057 (found by Barry K. Nathan)
Paul Bakkere92f73d2014-04-18 14:08:26 +02005058
Paul Bakker784b04f2014-04-11 15:33:59 +02005059= PolarSSL 1.3.6 released on 2014-04-11
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005060
Paul Bakker27e36d32014-04-08 12:33:37 +02005061Features
5062 * Support for the ALPN SSL extension
Paul Bakker1cfc4582014-04-09 15:25:13 +02005063 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02005064 * Enable verification of the keyUsage extension for CA and leaf
Paul Bakker59366212014-04-09 15:55:20 +02005065 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02005066 * Enable verification of the extendedKeyUsage extension
5067 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02005068
Paul Bakker4984d3c2014-04-04 15:39:37 +02005069Changes
5070 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02005071 * pk_verify() now returns a specific error code when the signature is valid
5072 but shorter than the supplied length.
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02005073 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02005074 * Reject certificates with times not in UTC, per RFC 5280.
Paul Bakker4984d3c2014-04-04 15:39:37 +02005075
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02005076Security
5077 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
5078 (Found by Watson Ladd.)
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02005079 * The notAfter date of some certificates was no longer checked since 1.3.5.
5080 This affects certificates in the user-supplied chain except the top
5081 certificate. If the user-supplied chain contains only one certificates,
5082 it is not affected (ie, its notAfter date is properly checked).
Paul Bakker4224bc02014-04-08 14:36:50 +02005083 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
5084 TrustInSoft)
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02005085
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005086Bugfix
5087 * The length of various ClientKeyExchange messages was not properly checked.
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01005088 * Some example server programs were not sending the close_notify alert.
Paul Bakker75a28602014-03-31 12:08:17 +02005089 * Potential memory leak in mpi_exp_mod() when error occurs during
5090 calculation of RR.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02005091 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02005092 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
5093 Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02005094 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
5095 (found by Gergely Budai)
Shuo Chen95a0d112014-04-04 21:04:40 -07005096 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
5097 Shuo Chen).
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01005098 * oid_get_numeric_string() used to truncate the output without returning an
5099 error if the output buffer was just 1 byte too small.
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01005100 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02005101 * Calling pk_debug() on an RSA-alt key would segfault.
5102 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
Paul Bakker16300582014-04-11 13:28:43 +02005103 * Potential buffer overwrite in pem_write_buffer() because of low length
5104 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard78848372014-04-10 17:45:07 +02005105 * EC curves constants, which should be only in ROM since 1.3.3, were also
5106 stored in RAM due to missing 'const's (found by Gergely Budai).
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005107
Paul Bakker96d52652014-03-26 16:55:50 +01005108= PolarSSL 1.3.5 released on 2014-03-26
Paul Bakker5fb8efe2014-02-05 15:54:34 +01005109Features
5110 * HMAC-DRBG as a separate module
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005111 * Option to set the Curve preference order (disabled by default)
Paul Bakker6a28e722014-02-06 13:41:55 +01005112 * Single Platform compatilibity layer (for memory / printf / fprintf)
Paul Bakkerf2561b32014-02-06 15:11:55 +01005113 * Ability to provide alternate timing implementation
Paul Bakker2ceda572014-02-06 15:55:25 +01005114 * Ability to force the entropy module to use SHA-256 as its basis
5115 (POLARSSL_ENTROPY_FORCE_SHA256)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01005116 * Testing script ssl-opt.sh added for testing 'live' ssl option
5117 interoperability against OpenSSL and PolarSSL
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01005118 * Support for reading EC keys that use SpecifiedECDomain in some cases.
Paul Bakker66ff70d2014-03-26 11:54:05 +01005119 * Entropy module now supports seed writing and reading
Paul Bakker6a28e722014-02-06 13:41:55 +01005120
5121Changes
5122 * Deprecated the Memory layer
Paul Bakker47703a02014-02-06 15:01:20 +01005123 * entropy_add_source(), entropy_update_manual() and entropy_gather()
5124 now thread-safe if POLARSSL_THREADING_C defined
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01005125 * Improvements to the CMake build system, contributed by Julian Ospald.
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01005126 * Work around a bug of the version of Clang shipped by Apple with Mavericks
5127 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01005128 * Revamped the compat.sh interoperatibility script to include support for
5129 testing against GnuTLS
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005130 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Paul Bakker674e0b02014-03-26 13:26:52 +01005131 * Improvements to tests/Makefile, contributed by Oden Eriksson.
Paul Bakker5fb8efe2014-02-05 15:54:34 +01005132
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005133Security
5134 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01005135 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005136 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01005137 * Check notBefore timestamp of certificates and CRLs from the future.
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01005138 * Forbid sequence number wrapping
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005139 * Fixed possible buffer overflow with overlong PSK
Paul Bakker91c61bc2014-03-26 14:06:55 +01005140 * Possible remotely-triggered out-of-bounds memory access fixed (found by
5141 TrustInSoft)
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005142
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01005143Bugfix
5144 * ecp_gen_keypair() does more tries to prevent failure because of
5145 statistics
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005146 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakkercd6d69a2014-02-06 15:43:21 +01005147 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01005148 * Fixed version-major intolerance in server
Paul Bakker3d52ab72014-03-07 10:33:55 +01005149 * Fixed CMake symlinking on out-of-source builds
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01005150 * Fixed dependency issues in test suite
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01005151 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Alex Wilson73491422014-03-06 00:04:09 +10005152 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
5153 Alex Wilson.)
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005154 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
5155 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01005156 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005157 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005158 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005159 client certificate.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01005160 * ssl_srv was leaking memory when client presented a timed out ticket
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005161 containing a client certificate
Paul Bakker3d6504a2014-03-17 13:41:51 +01005162 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
5163 out_ctr failed
Paul Bakker77f4f392014-03-26 15:28:55 +01005164 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
5165 of one of them failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01005166 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker5fff23b2014-03-26 15:34:54 +01005167 * x509_get_current_time() uses localtime_r() to prevent thread issues
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01005168
Paul Bakker2aca2412014-01-27 11:49:46 +01005169= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker3eb96732014-01-22 13:08:19 +01005170Features
Paul Bakker0ac99ca2014-01-22 13:08:44 +01005171 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakker5862eee2014-01-22 14:18:03 +01005172 * Support for RIPEMD-160
Paul Bakker556efba2014-01-24 15:38:12 +01005173 * Support for AES CFB8 mode
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01005174 * Support for deterministic ECDSA (RFC 6979)
Paul Bakker3eb96732014-01-22 13:08:19 +01005175
5176Bugfix
5177 * Potential memory leak in bignum_selftest()
5178 * Replaced expired test certificate
Paul Bakkerd75ba402014-01-24 16:11:17 +01005179 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakkerb84582b2014-01-27 12:23:43 +01005180 * net module handles timeouts on blocking sockets better (found by Tilman
5181 Sauerbeck)
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01005182 * Assembly format fixes in bn_mul.h
5183
5184Security
Paul Bakkerb84582b2014-01-27 12:23:43 +01005185 * Missing MPI_CHK calls added around unguarded mpi calls (found by
5186 TrustInSoft)
Paul Bakker3eb96732014-01-22 13:08:19 +01005187
Paul Bakker5bc07a32013-12-31 10:57:44 +01005188= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker014f1432013-12-02 14:54:01 +01005189Features
5190 * EC key generation support in gen_key app
Paul Bakker9dc53a92013-12-02 14:55:28 +01005191 * Support for adhering to client ciphersuite order preference
5192 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker48d78a52013-12-05 16:11:38 +01005193 * Support for Curve25519
Paul Bakkerfdf94692013-12-17 13:09:31 +01005194 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakker5a607d22013-12-17 14:33:42 +01005195 * Support for IPv6 in the NET module
Paul Bakker23116fd2013-12-30 14:09:47 +01005196 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakkerf9c49532013-12-19 15:40:58 +01005197 * SSL Pthread-based server example added (ssl_pthread_server)
Paul Bakker014f1432013-12-02 14:54:01 +01005198
Paul Bakker7aa03752013-11-26 17:37:31 +01005199Changes
5200 * gen_prime() speedup
5201 * Speedup of ECP multiplication operation
5202 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerc3d0d072013-12-02 14:50:49 +01005203 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker4040d7e2013-12-02 14:52:57 +01005204 * More constant-time checks in the RSA module
Paul Bakkerb14817d2013-12-02 22:03:23 +01005205 * Split off curves from ecp.c into ecp_curves.c
Paul Bakker5ab68ba2013-12-17 13:10:48 +01005206 * Curves are now stored fully in ROM
Paul Bakkerc7387912013-12-31 10:32:50 +01005207 * Memory usage optimizations in ECP module
Paul Bakkera8fd3e32013-12-31 11:54:08 +01005208 * Removed POLARSSL_THREADING_DUMMY
Paul Bakker7aa03752013-11-26 17:37:31 +01005209
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005210Bugfix
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01005211 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005212 * Fixed X.509 hostname comparison (with non-regular characters)
Paul Bakkera9a028e2013-11-21 17:31:06 +01005213 * SSL now gracefully handles missing RNG
Paul Bakker7aa03752013-11-26 17:37:31 +01005214 * Missing defines / cases for RSA_PSK key exchange
5215 * crypt_and_hash app checks MAC before final decryption
Paul Bakker6f0636a2013-12-16 15:24:05 +01005216 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakkerf70fe812013-12-16 16:43:10 +01005217 * Memory leak in benchmark application
Paul Bakker1a56fc92013-12-19 13:51:24 +01005218 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6ea1a952013-12-31 11:16:03 +01005219 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
5220 TrustInSoft)
Paul Bakker6992eb72013-12-31 11:35:16 +01005221 * Fixed potential overflow in certificate size verification in
5222 ssl_write_certificate() (found by TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005223
Paul Bakker956c9e02013-12-19 14:42:28 +01005224Security
5225 * Possible remotely-triggered out-of-bounds memory access fixed (found by
5226 TrustInSoft)
5227
Paul Bakkerf4dc1862013-11-04 17:29:42 +01005228= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker08bb1872013-10-28 14:03:26 +01005229Features
5230 * PK tests added to test framework
Paul Bakker3f917e22013-10-28 14:16:59 +01005231 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker16421222013-10-28 14:37:09 +01005232 * Support for Camellia-GCM mode and ciphersuites
Paul Bakker08bb1872013-10-28 14:03:26 +01005233
Paul Bakker7bc745b2013-10-28 14:39:49 +01005234Changes
5235 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01005236 * Value comparisons in SSL layer are now constant-time
Paul Bakker7b0be682013-10-29 14:24:37 +01005237 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakkere1121b62013-10-31 14:37:37 +01005238 * SSL Renegotiation was refactored
Paul Bakker7bc745b2013-10-28 14:39:49 +01005239
Paul Bakker677377f2013-10-28 12:54:26 +01005240Bugfix
Paul Bakker16421222013-10-28 14:37:09 +01005241 * More stringent checks in cipher layer
Paul Bakker677377f2013-10-28 12:54:26 +01005242 * Server does not send out extensions not advertised by client
Paul Bakker45a2c8d2013-10-28 12:57:08 +01005243 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker68037da2013-10-28 14:02:40 +01005244 * Misc fixes and additions to dependency checks
Paul Bakker50dc8502013-10-28 21:19:10 +01005245 * Const correctness
Paul Bakker93c6aa42013-10-28 22:28:09 +01005246 * cert_write with selfsign should use issuer_name as subject_name
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01005247 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakkerfa6a6202013-10-28 18:48:30 +01005248 * Defines to handle UEFI environment under MSVC
Paul Bakkere1121b62013-10-31 14:37:37 +01005249 * Server-side initiated renegotiations send HelloRequest
Paul Bakker677377f2013-10-28 12:54:26 +01005250
Paul Bakker5c17ccd2013-10-15 13:12:41 +02005251= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakkerb799dec2013-10-11 10:03:27 +02005252Features
5253 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakker376e8152013-10-15 12:44:23 +02005254 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerf34673e2013-10-15 12:46:17 +02005255 * Support for RSA-PSK key-exchange and ciphersuites
Paul Bakkerb799dec2013-10-11 10:03:27 +02005256
Paul Bakkerddba8822013-10-11 09:21:56 +02005257Changes
5258 * RSA blinding locks for a smaller amount of time
Paul Bakker16770332013-10-11 09:59:44 +02005259 * TLS compression only allocates working buffer once
Paul Bakkerbe089b02013-10-14 15:51:50 +02005260 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
Paul Bakkera7ea6a52013-10-15 11:55:10 +02005261 * config.h is more script-friendly
Paul Bakkerddba8822013-10-11 09:21:56 +02005262
5263Bugfix
5264 * Missing MSVC defines added
5265 * Compile errors with POLARSSL_RSA_NO_CRT
5266 * Header files with 'polarssl/'
Paul Bakkerfcc17212013-10-11 09:36:52 +02005267 * Const correctness
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02005268 * Possible naming collision in dhm_context
Paul Bakker4aa40d42013-10-11 10:49:24 +02005269 * Better support for MSVC
Paul Bakkerb7c13122013-10-11 10:51:32 +02005270 * threading_set_alt() name
Paul Bakker5191e922013-10-11 10:54:28 +02005271 * Added missing x509write_crt_set_version()
Paul Bakkerddba8822013-10-11 09:21:56 +02005272
Paul Bakker5c17ccd2013-10-15 13:12:41 +02005273= PolarSSL 1.3.0 released on 2013-10-01
Paul Bakker41c83d32013-03-20 14:39:14 +01005274Features
5275 * Elliptic Curve Cryptography module added
5276 * Elliptic Curve Diffie Hellman module added
5277 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
5278 (ECDHE-based ciphersuites)
Paul Bakkerc8676782013-08-28 12:15:11 +02005279 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
5280 (ECDSA-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02005281 * Ability to specify allowed ciphersuites based on the protocol version.
Paul Bakkerb91c2b52013-04-19 16:05:16 +02005282 * PSK and DHE-PSK based ciphersuites added
Paul Bakker6e339b52013-07-03 13:37:05 +02005283 * Memory allocation abstraction layer added
5284 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakker2466d932013-09-28 14:40:38 +02005285 * Threading abstraction layer added (dummy / pthread / alternate)
Paul Bakker5ad403f2013-09-18 21:21:30 +02005286 * Public Key abstraction layer added
Paul Bakkerf85778e2013-07-19 14:55:25 +02005287 * Parsing Elliptic Curve keys
5288 * Parsing Elliptic Curve certificates
5289 * Support for max_fragment_length extension (RFC 6066)
5290 * Support for truncated_hmac extension (RFC 6066)
Paul Bakkerda4d1c32013-08-14 12:24:34 +02005291 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
5292 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
Paul Bakker936539a2013-08-14 13:49:20 +02005293 * Support for session tickets (RFC 5077)
Paul Bakkerca174fe2013-08-28 16:31:30 +02005294 * Certificate Request (CSR) generation with extensions (key_usage,
5295 ns_cert_type)
Paul Bakker7fb4a792013-09-12 12:00:52 +02005296 * X509 Certificate writing with extensions (basic_constraints,
5297 issuer_key_identifier, etc)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02005298 * Optional blinding for RSA, DHM and EC
Paul Bakker8b817dc2013-09-25 18:03:58 +02005299 * Support for multiple active certificate / key pairs in SSL servers for
Darryl Green11999bb2018-03-13 15:22:58 +00005300 the same host (Not to be confused with SNI!)
Paul Bakker41c83d32013-03-20 14:39:14 +01005301
Paul Bakker9b5798d2013-03-13 13:53:00 +01005302Changes
Paul Bakkerd2f068e2013-08-27 21:19:20 +02005303 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
5304 individually
Paul Bakker68884e32013-01-07 18:20:04 +01005305 * Introduced separate SSL Ciphersuites module that is based on
5306 Cipher and MD information
Paul Bakker9b5798d2013-03-13 13:53:00 +01005307 * Internals for SSL module adapted to have separate IV pointer that is
5308 dynamically set (Better support for hardware acceleration)
Paul Bakkerc70b9822013-04-07 22:00:46 +02005309 * Moved all OID functionality to a separate module. RSA function
5310 prototypes for the RSA sign and verify functions changed as a result
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02005311 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker2fbefde2013-06-29 16:01:15 +02005312 * Client and server now filter sent and accepted ciphersuites on minimum
5313 and maximum protocol version
Paul Bakker0be444a2013-08-27 21:55:01 +02005314 * Ability to disable server_name extension (RFC 6066)
Paul Bakkere2ab84f2013-06-29 18:24:32 +02005315 * Renamed error_strerror() to the less conflicting polarssl_strerror()
5316 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker9e36f042013-06-30 14:34:05 +02005317 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
Paul Bakker548957d2013-08-30 10:30:02 +02005318 * All RSA operations require a random generator for blinding purposes
Paul Bakker45f21c72013-09-18 15:33:49 +02005319 * X509 core refactored
5320 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
Paul Bakker5ad403f2013-09-18 21:21:30 +02005321 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakkerc27c4e22013-09-23 15:01:36 +02005322 * Support faulty X509 v1 certificates with extensions
5323 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker9b5798d2013-03-13 13:53:00 +01005324
Paul Bakkereff2e6d2013-04-11 17:13:22 +02005325Bugfix
Paul Bakker73d44312013-05-22 13:56:26 +02005326 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02005327 * zlib compression/decompression skipped on empty blocks
Paul Bakker1e6a1752013-07-26 14:10:22 +02005328 * Support for AIX header locations in net.c module
Paul Bakker003dbad2013-09-09 17:26:14 +02005329 * Fixed file descriptor leaks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02005330
Paul Bakkeraab30c12013-08-30 11:00:25 +02005331Security
5332 * RSA blinding on CRT operations to counter timing attacks
5333 (found by Cyril Arnaud and Pierre-Alain Fouque)
5334
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02005335
5336= Version 1.2.14 released 2015-05-??
5337
5338Security
5339 * Fix potential invalid memory read in the server, that allows a client to
5340 crash it remotely (found by Caj Larsson).
5341 * Fix potential invalid memory read in certificate parsing, that allows a
5342 client to crash the server remotely if client authentication is enabled
5343 (found using Codenomicon Defensics).
5344 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
5345 https://dl.acm.org/citation.cfm?id=2714625
5346
5347Bugfix
5348 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
5349 * Fix hardclock() (only used in the benchmarking program) with some
5350 versions of mingw64 (found by kxjhlele).
5351 * Fix warnings from mingw64 in timing.c (found by kxjklele).
5352 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
5353 platforms (found with Coverity Scan).
5354
5355= Version 1.2.13 released 2015-02-16
5356Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
5357 this will be made in the 1.2 branch at this point.
5358
5359Security
5360 * Fix remotely-triggerable uninitialised pointer dereference caused by
5361 crafted X.509 certificate (TLS server is not affected if it doesn't ask
5362 for a client certificate) (found using Codenomicon Defensics).
5363 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
5364 (TLS server is not affected if it doesn't ask for a client certificate)
5365 (found using Codenomicon Defensics).
5366 * Fix potential stack overflow while parsing crafted X.509 certificates
5367 (TLS server is not affected if it doesn't ask for a client certificate)
5368 found using Codenomicon Defensics).
5369 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
5370 (TLS server is not affected if it doesn't ask for a client certificate).
5371
5372Bugfix
5373 * Fix potential undefined behaviour in Camellia.
5374 * Fix memory leaks in PKCS#5 and PKCS#12.
5375 * Stack buffer overflow if ctr_drbg_update() is called with too large
5376 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
5377 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
5378 in 1.2.12).
5379 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
5380 Peter Vaskovic).
5381 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
5382 * ssl_get_verify_result() now works even if the handshake was aborted due
5383 to a failed verification (found by Fredrik Axelsson).
5384 * Skip writing and parsing signature_algorithm extension if none of the
5385 key exchanges enabled needs certificates. This fixes a possible interop
5386 issue with some servers when a zero-length extension was sent. (Reported
5387 by Peter Dettman.)
5388 * On a 0-length input, base64_encode() did not correctly set output length
5389 (found by Hendrik van den Boogaard).
5390
5391Changes
5392 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
5393 * Forbid repeated extensions in X.509 certificates.
5394 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
5395 length of an X.509 verification chain (default = 8).
Paul Bakkera6c5ea22014-10-24 16:26:29 +02005396= Version 1.2.12 released 2014-10-24
5397
5398Security
5399 * Remotely-triggerable memory leak when parsing some X.509 certificates
5400 (server is not affected if it doesn't ask for a client certificate).
5401 (Found using Codenomicon Defensics.)
5402
5403Bugfix
5404 * Fix potential bad read in parsing ServerHello (found by Adrien
5405 Vialletelle).
5406 * ssl_close_notify() could send more than one message in some circumstances
5407 with non-blocking I/O.
5408 * x509_crt_parse() did not increase total_failed on PEM error
5409 * Fix compiler warnings on iOS (found by Sander Niemeijer).
5410 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
5411 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
5412 * ssl_read() could return non-application data records on server while
5413 renegotation was pending, and on client when a HelloRequest was received.
5414 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
5415
5416Changes
5417 * X.509 certificates with more than one AttributeTypeAndValue per
5418 RelativeDistinguishedName are not accepted any more.
5419 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
5420 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
5421 * Accept spaces at end of line or end of buffer in base64_decode().
5422
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02005423= Version 1.2.11 released 2014-07-11
5424Features
5425 * Entropy module now supports seed writing and reading
5426
5427Changes
5428 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
5429 * Improvements to the CMake build system, contributed by Julian Ospald.
5430 * Work around a bug of the version of Clang shipped by Apple with Mavericks
5431 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
5432 * Improvements to tests/Makefile, contributed by Oden Eriksson.
5433 * Use UTC time to check certificate validity.
5434 * Reject certificates with times not in UTC, per RFC 5280.
5435 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
5436 against unwanted compiler optimizations
5437
5438Security
5439 * Forbid change of server certificate during renegotiation to prevent
5440 "triple handshake" attack when authentication mode is optional (the
5441 attack was already impossible when authentication is required).
5442 * Check notBefore timestamp of certificates and CRLs from the future.
5443 * Forbid sequence number wrapping
5444 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
5445 TrustInSoft)
5446 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
5447 It was possible to crash the server (and client) using crafted messages
5448 when a GCM suite was chosen.
5449
5450Bugfix
5451 * Fixed X.509 hostname comparison (with non-regular characters)
5452 * SSL now gracefully handles missing RNG
5453 * crypt_and_hash app checks MAC before final decryption
5454 * Fixed x509_crt_parse_path() bug on Windows platforms
5455 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
5456 TrustInSoft)
5457 * Fixed potential overflow in certificate size verification in
5458 ssl_write_certificate() (found by TrustInSoft)
5459 * Fix ASM format in bn_mul.h
5460 * Potential memory leak in bignum_selftest()
5461 * Replaced expired test certificate
5462 * ssl_mail_client now terminates lines with CRLF, instead of LF
5463 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
5464 * Fixed testing with out-of-source builds using cmake
5465 * Fixed version-major intolerance in server
5466 * Fixed CMake symlinking on out-of-source builds
5467 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
5468 Alex Wilson.)
5469 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
5470 out_ctr failed
5471 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
5472 of one of them failed
5473 * x509_get_current_time() uses localtime_r() to prevent thread issues
5474 * Some example server programs were not sending the close_notify alert.
5475 * Potential memory leak in mpi_exp_mod() when error occurs during
5476 calculation of RR.
5477 * Improve interoperability by not writing extension length in ClientHello
5478 when no extensions are present (found by Matthew Page)
5479 * rsa_check_pubkey() now allows an E up to N
5480 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
5481 * mpi_fill_random() was creating numbers larger than requested on
5482 big-endian platform when size was not an integer number of limbs
5483 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
5484 * Stricter check on SSL ClientHello internal sizes compared to actual packet
5485 size (found by TrustInSoft)
5486 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
5487 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
5488 interpret semicolons as comment delimiters (found by Barry K. Nathan).
5489 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
5490 * Fix base64_decode() to return and check length correctly (in case of
5491 tight buffers)
5492
Paul Bakker3a2c0562013-10-07 16:22:05 +02005493= Version 1.2.10 released 2013-10-07
5494Changes
5495 * Changed RSA blinding to a slower but thread-safe version
5496
5497Bugfix
5498 * Fixed memory leak in RSA as a result of introduction of blinding
5499 * Fixed ssl_pkcs11_decrypt() prototype
5500 * Fixed MSVC project files
5501
Paul Bakkerd93d28e2013-10-01 10:12:42 +02005502= Version 1.2.9 released 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02005503Changes
5504 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
5505
5506Bugfix
5507 * Fixed potential memory leak when failing to resume a session
5508 * Fixed potential file descriptor leaks (found by Remi Gacogne)
5509 * Minor fixes
5510
5511Security
5512 * Fixed potential heap buffer overflow on large hostname setting
5513 * Fixed potential negative value misinterpretation in load_file()
5514 * RSA blinding on CRT operations to counter timing attacks
5515 (found by Cyril Arnaud and Pierre-Alain Fouque)
5516
Paul Bakkerde656232013-06-24 19:07:34 +02005517= Version 1.2.8 released 2013-06-19
5518Features
5519 * Parsing of PKCS#8 encrypted private key files
5520 * PKCS#12 PBE and derivation functions
5521 * Centralized module option values in config.h to allow user-defined
5522 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
5523
5524Changes
5525 * HAVEGE random generator disabled by default
5526 * Internally split up x509parse_key() into a (PEM) handler function
5527 and specific DER parser functions for the PKCS#1 and unencrypted
5528 PKCS#8 private key formats
5529 * Added mechanism to provide alternative implementations for all
5530 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
Darryl Green11999bb2018-03-13 15:22:58 +00005531 config.h)
Paul Bakkerde656232013-06-24 19:07:34 +02005532 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
5533 old PBKDF2 module
5534
5535Bugfix
5536 * Secure renegotiation extension should only be sent in case client
5537 supports secure renegotiation
5538 * Fixed offset for cert_type list in ssl_parse_certificate_request()
5539 * Fixed const correctness issues that have no impact on the ABI
5540 * x509parse_crt() now better handles PEM error situations
5541 * ssl_parse_certificate() now calls x509parse_crt_der() directly
5542 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00005543 certificates
Paul Bakkerde656232013-06-24 19:07:34 +02005544 * x509parse_crtpath() is now reentrant and uses more portable stat()
5545 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
5546 * Fixed values for 2-key Triple DES in cipher layer
5547 * ssl_write_certificate_request() can handle empty ca_chain
5548
5549Security
5550 * A possible DoS during the SSL Handshake, due to faulty parsing of
5551 PEM-encoded certificates has been fixed (found by Jack Lloyd)
5552
5553= Version 1.2.7 released 2013-04-13
5554Features
5555 * Ability to specify allowed ciphersuites based on the protocol version.
5556
5557Changes
5558 * Default Blowfish keysize is now 128-bits
5559 * Test suites made smaller to accommodate Raspberry Pi
5560
5561Bugfix
5562 * Fix for MPI assembly for ARM
5563 * GCM adapted to support sizes > 2^29
5564
Paul Bakker90f042d2013-03-11 11:38:44 +01005565= Version 1.2.6 released 2013-03-11
Paul Bakkerc0463502013-02-14 11:19:38 +01005566Bugfix
5567 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01005568 * Corrected GCM counter incrementation to use only 32-bits instead of
5569 128-bits (found by Yawning Angel)
Paul Bakkere3e4a592013-02-28 10:20:53 +01005570 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakker37286a52013-03-06 16:55:11 +01005571 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01005572 * Fixed assembly code for ARM (Thumb and regular) for some compilers
Paul Bakkerc0463502013-02-14 11:19:38 +01005573
Paul Bakkerb3869132013-02-28 17:21:01 +01005574Changes
5575 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
5576 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
5577 PKCS#1 v2.1 functions
Paul Bakkera43231c2013-02-28 17:33:49 +01005578 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
5579 or rsa_rsaes_oaep_decrypt()
Paul Bakker78a8c712013-03-06 17:01:52 +01005580 * Re-added handling for SSLv2 Client Hello when the define
5581 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkere81beda2013-03-06 17:40:46 +01005582 * The SSL session cache module (ssl_cache) now also retains peer_cert
5583 information (not the entire chain)
Paul Bakkerb3869132013-02-28 17:21:01 +01005584
Paul Bakkere47b34b2013-02-27 14:48:00 +01005585Security
5586 * Removed further timing differences during SSL message decryption in
5587 ssl_decrypt_buf()
Paul Bakker8804f692013-02-28 18:06:26 +01005588 * Removed timing differences due to bad padding from
5589 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
5590 operations
Paul Bakkere47b34b2013-02-27 14:48:00 +01005591
Paul Bakkerc7a2da42013-02-02 19:23:57 +01005592= Version 1.2.5 released 2013-02-02
Paul Bakker8fe40dc2013-02-02 12:43:08 +01005593Changes
5594 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakkerd66f0702013-01-31 16:57:45 +01005595 * Debug messages about padding errors during SSL message decryption are
Hanno Becker01a0e072017-07-26 11:49:40 +01005596 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakker40865c82013-01-31 17:13:13 +01005597 * Sending of security-relevant alert messages that do not break
5598 interoperability can be switched on/off with the flag
Paul Bakkera35aa542013-03-06 17:06:21 +01005599 POLARSSL_SSL_ALL_ALERT_MESSAGES
Paul Bakker8fe40dc2013-02-02 12:43:08 +01005600
Paul Bakker45829992013-01-03 14:52:21 +01005601Security
5602 * Removed timing differences during SSL message decryption in
5603 ssl_decrypt_buf() due to badly formatted padding
5604
Paul Bakker14c56a32013-01-25 17:11:37 +01005605= Version 1.2.4 released 2013-01-25
Paul Bakker1961b702013-01-25 14:49:24 +01005606Changes
Paul Bakker68884e32013-01-07 18:20:04 +01005607 * More advanced SSL ciphersuite representation and moved to more dynamic
5608 SSL core
Paul Bakker1961b702013-01-25 14:49:24 +01005609 * Added ssl_handshake_step() to allow single stepping the handshake process
5610
Paul Bakker40628ba2013-01-03 10:50:31 +01005611Bugfix
5612 * Memory leak when using RSA_PKCS_V21 operations fixed
Paul Bakker21dca692013-01-03 11:41:08 +01005613 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker9c94cdd2013-01-22 13:45:33 +01005614 * Correctly handle CertificateRequest message in client for <= TLS 1.1
5615 without DN list
Paul Bakker40628ba2013-01-03 10:50:31 +01005616
Paul Bakkerfb1ba782012-11-26 16:28:25 +01005617= Version 1.2.3 released 2012-11-26
5618Bugfix
5619 * Server not always sending correct CertificateRequest message
5620
Paul Bakkerdf5069c2012-11-24 12:20:19 +01005621= Version 1.2.2 released 2012-11-24
Paul Bakkere667c982012-11-20 13:50:22 +01005622Changes
5623 * Added p_hw_data to ssl_context for context specific hardware acceleration
5624 data
Hanno Becker01a0e072017-07-26 11:49:40 +01005625 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkere667c982012-11-20 13:50:22 +01005626
Paul Bakker7c90da92012-11-23 14:02:40 +01005627Bugfixes
Paul Bakkerdf5069c2012-11-24 12:20:19 +01005628 * Fixed client authentication compatibility
5629 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker7c90da92012-11-23 14:02:40 +01005630
Paul Bakker14926332012-11-20 10:58:09 +01005631= Version 1.2.1 released 2012-11-20
Paul Bakker34d8dbc2012-11-14 12:11:38 +00005632Changes
5633 * Depth that the certificate verify callback receives is now numbered
5634 bottom-up (Peer cert depth is 0)
5635
Paul Bakker7a2538e2012-11-02 10:59:36 +00005636Bugfixes
5637 * Fixes for MSVC6
Paul Bakkerd9374b02012-11-02 11:02:58 +00005638 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Paul Bakkerf02c5642012-11-13 10:25:21 +00005639 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
5640 Pégourié-Gonnard)
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01005641 * Fixed possible segfault in mpi_shift_r() (found by Manuel
5642 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00005643 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakker7a2538e2012-11-02 10:59:36 +00005644
Paul Bakkerc9c5df92012-10-31 13:55:27 +00005645= Version 1.2.0 released 2012-10-31
Paul Bakkerfab5c822012-02-06 16:45:10 +00005646Features
5647 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
5648 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
5649 default!
Paul Bakkera8cd2392012-02-11 16:09:32 +00005650 * Added support for wildcard certificates
5651 * Added support for multi-domain certificates through the X509 Subject
5652 Alternative Name extension
Paul Bakkerbdb912d2012-02-13 23:11:30 +00005653 * Added preliminary ASN.1 buffer writing support
5654 * Added preliminary X509 Certificate Request writing support
5655 * Added key_app_writer example application
5656 * Added cert_req example application
Paul Bakker89e80c92012-03-20 13:50:09 +00005657 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker48916f92012-09-16 19:57:18 +00005658 * Added TLS 1.2 support (RFC 5246)
Paul Bakkerca4ab492012-04-18 14:23:57 +00005659 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakker01cc3942012-05-08 08:36:15 +00005660 * Added commandline error code convertor (util/strerror)
Paul Bakker05ef8352012-05-08 09:17:57 +00005661 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakkere6ee41f2012-05-19 08:43:48 +00005662 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakkerc9c5df92012-10-31 13:55:27 +00005663 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker8d914582012-06-04 12:46:42 +00005664 * Added X509 CA Path support
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00005665 * Added Thumb assembly optimizations
Paul Bakker2770fbd2012-07-03 13:30:23 +00005666 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker6132d0a2012-07-04 17:10:40 +00005667 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakkerf518b162012-08-23 13:03:18 +00005668 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker48916f92012-09-16 19:57:18 +00005669 * Added Secure Renegotiation (RFC 5746)
Paul Bakker29b64762012-09-25 09:36:44 +00005670 * Added predefined DHM groups from RFC 5114
Paul Bakker0a597072012-09-25 21:55:46 +00005671 * Added simple SSL session cache implementation
Paul Bakker5701cdc2012-09-27 21:49:42 +00005672 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1d29fb52012-09-28 13:28:45 +00005673 * Added option to add minimum accepted SSL/TLS protocol version
Paul Bakkerfab5c822012-02-06 16:45:10 +00005674
Paul Bakker1504af52012-02-11 16:17:43 +00005675Changes
5676 * Removed redundant POLARSSL_DEBUG_MSG define
Paul Bakker048d04e2012-02-12 17:31:04 +00005677 * AES code only check for Padlock once
Paul Bakker6b906e52012-05-08 12:01:43 +00005678 * Fixed const-correctness mpi_get_bit()
5679 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker186751d2012-05-08 13:16:14 +00005680 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker4d2c1242012-05-10 14:12:46 +00005681 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
Paul Bakker5b377842012-05-16 07:57:36 +00005682 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakker6132d0a2012-07-04 17:10:40 +00005683 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
5684 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkerec636f32012-09-09 19:17:02 +00005685 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
Paul Bakker0a597072012-09-25 21:55:46 +00005686 * Revamped session resumption handling
Paul Bakkereb2c6582012-09-27 19:15:01 +00005687 * Generalized external private key implementation handling (like PKCS#11)
5688 in SSL/TLS
Paul Bakker915275b2012-09-28 07:10:55 +00005689 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker5c2364c2012-10-01 14:41:15 +00005690 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker645ce3a2012-10-31 12:32:41 +00005691 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker1504af52012-02-11 16:17:43 +00005692
Paul Bakker37824582012-03-22 14:10:22 +00005693Bugfix
Paul Bakker7beceb22012-03-22 14:19:49 +00005694 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
5695 Hui Dong)
Paul Bakker430ffbe2012-05-01 08:14:20 +00005696 * Fixed potential heap corruption in x509_name allocation
Paul Bakker5b377842012-05-16 07:57:36 +00005697 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkerf6198c12012-05-16 08:02:29 +00005698 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
5699 #52)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00005700 * Handle encryption with private key and decryption with public key as per
Darryl Green11999bb2018-03-13 15:22:58 +00005701 RFC 2313
Paul Bakkercefb3962012-06-27 11:51:09 +00005702 * Handle empty certificate subject names
Paul Bakker535e97d2012-08-23 10:49:55 +00005703 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00005704 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker995a2152012-09-25 08:19:56 +00005705 with carry rollover (found by Ruslan Yushchenko)
Paul Bakkerb00ca422012-09-25 12:10:00 +00005706 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker4f024b72012-10-30 07:29:57 +00005707 * Fixed MPI assembly for SPARC64 platform
Paul Bakker37824582012-03-22 14:10:22 +00005708
Paul Bakker452d5322012-04-05 12:07:34 +00005709Security
Paul Bakker3c16db92012-07-05 13:58:08 +00005710 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
5711 Vanderbeken)
Paul Bakker452d5322012-04-05 12:07:34 +00005712
Paul Bakkerd93d28e2013-10-01 10:12:42 +02005713= Version 1.1.8 released on 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02005714Bugfix
5715 * Fixed potential memory leak when failing to resume a session
5716 * Fixed potential file descriptor leaks
5717
5718Security
5719 * Potential buffer-overflow for ssl_read_record() (independently found by
5720 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
5721 * Potential negative value misinterpretation in load_file()
5722 * Potential heap buffer overflow on large hostname setting
5723
Paul Bakker248fff52013-06-24 19:08:50 +02005724= Version 1.1.7 released on 2013-06-19
5725Changes
5726 * HAVEGE random generator disabled by default
5727
5728Bugfix
5729 * x509parse_crt() now better handles PEM error situations
5730 * ssl_parse_certificate() now calls x509parse_crt_der() directly
5731 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00005732 certificates
Paul Bakker248fff52013-06-24 19:08:50 +02005733 * Fixed values for 2-key Triple DES in cipher layer
5734 * ssl_write_certificate_request() can handle empty ca_chain
5735
5736Security
5737 * A possible DoS during the SSL Handshake, due to faulty parsing of
5738 PEM-encoded certificates has been fixed (found by Jack Lloyd)
5739
5740= Version 1.1.6 released on 2013-03-11
5741Bugfix
5742 * Fixed net_bind() for specified IP addresses on little endian systems
5743
5744Changes
5745 * Allow enabling of dummy error_strerror() to support some use-cases
5746 * Debug messages about padding errors during SSL message decryption are
5747 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
5748
5749Security
5750 * Removed timing differences during SSL message decryption in
5751 ssl_decrypt_buf()
5752 * Removed timing differences due to bad padding from
5753 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
5754 operations
5755
Paul Bakker9d2bb652013-01-25 16:07:49 +01005756= Version 1.1.5 released on 2013-01-16
5757Bugfix
5758 * Fixed MPI assembly for SPARC64 platform
5759 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
5760 * mpi_add_abs() now correctly handles adding short numbers to long numbers
5761 with carry rollover
5762 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
5763 * Prevent reading over buffer boundaries on X509 certificate parsing
5764 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
5765 #52)
5766 * Fixed possible segfault in mpi_shift_r() (found by Manuel
5767 Pégourié-Gonnard)
5768 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
5769 Pégourié-Gonnard)
5770 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
5771 * Memory leak when using RSA_PKCS_V21 operations fixed
5772 * Handle encryption with private key and decryption with public key as per
5773 RFC 2313
5774 * Fixes for MSVC6
5775
5776Security
5777 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
5778 Vanderbeken)
5779
Paul Bakkerd5834bb2012-10-02 14:38:56 +00005780= Version 1.1.4 released on 2012-05-31
5781Bugfix
5782 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
5783 * Fixed potential heap corruption in x509_name allocation
5784 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
5785
Paul Bakkerfad38932012-05-08 09:04:04 +00005786= Version 1.1.3 released on 2012-04-29
5787Bugfix
5788 * Fixed random MPI generation to not generate more size than requested.
5789
5790= Version 1.1.2 released on 2012-04-26
5791Bugfix
5792 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
5793 Hui Dong)
5794
5795Security
5796 * Fixed potential memory corruption on miscrafted client messages (found by
5797 Frama-C team at CEA LIST)
5798 * Fixed generation of DHM parameters to correct length (found by Ruslan
5799 Yushchenko)
5800
Paul Bakker99955bf2012-01-23 09:31:41 +00005801= Version 1.1.1 released on 2012-01-23
Paul Bakkerb15b8512012-01-13 13:44:06 +00005802Bugfix
5803 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
5804 (Closes ticket #47, found by Hugo Leisink)
Paul Bakker2ec0a562012-01-21 05:41:23 +00005805 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakker99955bf2012-01-23 09:31:41 +00005806 * Fixed multiple compiler warnings for VS6 and armcc
5807 * Fixed bug in CTR_CRBG selftest
Paul Bakkerb15b8512012-01-13 13:44:06 +00005808
Paul Bakker08a50882011-12-22 09:43:57 +00005809= Version 1.1.0 released on 2011-12-22
Paul Bakker7eb013f2011-10-06 12:37:39 +00005810Features
5811 * Added ssl_session_reset() to allow better multi-connection pools of
5812 SSL contexts without needing to set all non-connection-specific
Darryl Green11999bb2018-03-13 15:22:58 +00005813 data and pointers again. Adapted ssl_server to use this functionality.
Paul Bakker490ecc82011-10-06 13:04:09 +00005814 * Added ssl_set_max_version() to allow clients to offer a lower maximum
5815 supported version to a server to help buggy server implementations.
Darryl Green11999bb2018-03-13 15:22:58 +00005816 (Closes ticket #36)
Paul Bakker03a30d32011-11-11 10:55:02 +00005817 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
5818 introspection functions (Closes ticket #40)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00005819 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Paul Bakker6083fd22011-12-03 21:45:14 +00005820 * Added a generic entropy accumulator that provides support for adding
5821 custom entropy sources and added some generic and platform dependent
Darryl Green11999bb2018-03-13 15:22:58 +00005822 entropy sources
Paul Bakker7eb013f2011-10-06 12:37:39 +00005823
Paul Bakkerca6f3e22011-10-06 13:11:08 +00005824Changes
5825 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerd246ed32011-10-06 13:18:27 +00005826 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
5827 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerc4909d92011-10-12 09:52:22 +00005828 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerfbc09f32011-10-12 09:56:41 +00005829 * Added an EXPLICIT tag number parameter to x509_get_ext()
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00005830 * Added a separate CRL entry extension parsing function
Paul Bakkerefc30292011-11-10 14:43:23 +00005831 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
5832 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakker5e18aed2011-11-15 15:38:45 +00005833 * Changed the defined key-length of DES ciphers in cipher.h to include the
5834 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkercce9d772011-11-18 14:26:47 +00005835 * Loads of minimal changes to better support WINCE as a build target
Paul Bakker2e6d5322011-11-18 14:34:17 +00005836 (Credits go to Marco Lizza)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00005837 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
5838 trade-off
Paul Bakkerfe3256e2011-11-25 12:11:43 +00005839 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
5840 management (Closes ticket #44)
Paul Bakkera3d195c2011-11-27 21:07:34 +00005841 * Changed the used random function pointer to more flexible format. Renamed
5842 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakkera35aa542013-03-06 17:06:21 +01005843 a consequence in library code and programs
Paul Bakker508ad5a2011-12-04 17:09:26 +00005844 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakker6c0ceb32011-12-04 12:24:18 +00005845 * Added permissive certificate parsing to x509parse_crt() and
5846 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakkera35aa542013-03-06 17:06:21 +01005847 encountering a parse-error. Beware that the meaning of return values has
5848 changed!
Paul Bakker69e095c2011-12-10 21:55:01 +00005849 * All error codes are now negative. Even on mermory failures and IO errors.
Paul Bakkerca6f3e22011-10-06 13:11:08 +00005850
Paul Bakkerfa1c5922011-10-06 14:18:49 +00005851Bugfix
5852 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
5853 ticket #37)
Paul Bakker3329d1f2011-10-12 09:55:01 +00005854 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
5855 before version numbers
Paul Bakkercebdf172011-11-11 15:01:31 +00005856 * Allowed X509 key usage parsing to accept 4 byte values instead of the
5857 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00005858 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
5859 smaller than the hash length. (Closes ticket #41)
Paul Bakker03c7c252011-11-25 12:37:37 +00005860 * If certificate serial is longer than 32 octets, serial number is now
5861 appended with '....' after first 28 octets
Paul Bakker44637402011-11-26 09:23:07 +00005862 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakker4f5ae802011-12-04 22:10:28 +00005863 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerc50132d2011-12-05 14:38:36 +00005864 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00005865 certificates and CRLs
Paul Bakkerfa1c5922011-10-06 14:18:49 +00005866
Paul Bakker968bc982011-07-27 17:03:00 +00005867= Version 1.0.0 released on 2011-07-27
Paul Bakker343a8702011-06-09 14:27:58 +00005868Features
5869 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker7bc05ff2011-08-09 10:30:36 +00005870 * Added rsa_encrypt and rsa_decrypt simple example programs.
Paul Bakker343a8702011-06-09 14:27:58 +00005871
Paul Bakker42e59812011-06-09 15:55:41 +00005872Changes
5873 * The generic cipher and message digest layer now have normal error
5874 codes instead of integers
5875
Paul Bakker887bd502011-06-08 13:10:54 +00005876Bugfix
5877 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
5878 #18)
5879
Paul Bakker828acb22011-05-27 09:25:42 +00005880= Version 0.99-pre5 released on 2011-05-26
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00005881Features
5882 * Added additional Cipher Block Modes to symmetric ciphers
5883 (AES CTR, Camellia CTR, XTEA CBC) including the option to
Paul Bakkera35aa542013-03-06 17:06:21 +01005884 enable and disable individual modes when needed
Paul Bakker335db3f2011-04-25 15:28:35 +00005885 * Functions requiring File System functions can now be disabled
5886 by undefining POLARSSL_FS_IO
Paul Bakker9d781402011-05-09 16:17:09 +00005887 * A error_strerror function() has been added to translate between
5888 error codes and their description.
Paul Bakker2f5947e2011-05-18 15:47:11 +00005889 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
5890 functions.
Paul Bakker1496d382011-05-23 12:07:29 +00005891 * Added ssl_mail_client and ssl_fork_server as example programs.
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00005892
Paul Bakker23986e52011-04-24 08:57:21 +00005893Changes
5894 * Major argument / variable rewrite. Introduced use of size_t
5895 instead of int for buffer lengths and loop variables for
Paul Bakkera35aa542013-03-06 17:06:21 +01005896 better unsigned / signed use. Renamed internal bigint types
5897 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker6c591fa2011-05-05 11:49:20 +00005898 * mpi_init() and mpi_free() now only accept a single MPI
5899 argument and do not accept variable argument lists anymore.
Paul Bakker9d781402011-05-09 16:17:09 +00005900 * The error codes have been remapped and combining error codes
5901 is now done with a PLUS instead of an OR as error codes
Paul Bakkera35aa542013-03-06 17:06:21 +01005902 used are negative.
Paul Bakker831a7552011-05-18 13:32:51 +00005903 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
5904 net_recv() now returns 0 on EOF instead of
Paul Bakkera35aa542013-03-06 17:06:21 +01005905 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
5906 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
5907 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
5908 after the handshake.
Paul Bakker831a7552011-05-18 13:32:51 +00005909 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
5910 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakkera35aa542013-03-06 17:06:21 +01005911 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker23986e52011-04-24 08:57:21 +00005912
Paul Bakker3efa5752011-04-01 12:23:26 +00005913= Version 0.99-pre4 released on 2011-04-01
Paul Bakker9dcc3222011-03-08 14:16:06 +00005914Features
5915 * Added support for PKCS#1 v2.1 encoding and thus support
5916 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakkere77db2e2011-03-25 14:01:32 +00005917 * Reading of Public Key files incorporated into default x509
5918 functionality as well.
Paul Bakker287781a2011-03-26 13:18:49 +00005919 * Added mpi_fill_random() for centralized filling of big numbers
5920 with random data (Fixed ticket #10)
Paul Bakker9dcc3222011-03-08 14:16:06 +00005921
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005922Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01005923 * Debug print of MPI now removes leading zero octets and
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005924 displays actual bit size of the value.
Hanno Becker01a0e072017-07-26 11:49:40 +01005925 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakker98675492011-03-26 13:17:12 +00005926 does not zeroize memory in advance anymore. Use rsa_init()
Paul Bakkera35aa542013-03-06 17:06:21 +01005927 before parsing a key or keyfile!
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005928
5929Bugfix
5930 * Debug output of MPI's now the same independent of underlying
5931 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
Paul Bakkera35aa542013-03-06 17:06:21 +01005932 Kiilerich and Mihai Militaru)
Paul Bakker1fd00bf2011-03-14 20:50:15 +00005933 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
5934 #18, found by Nikolay Epifanov)
Paul Bakkere77db2e2011-03-25 14:01:32 +00005935 * Fixed proper handling of RSASSA-PSS verification with variable
5936 length salt lengths
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005937
Paul Bakker345a6fe2011-02-28 21:20:02 +00005938= Version 0.99-pre3 released on 2011-02-28
5939This release replaces version 0.99-pre2 which had possible copyright issues.
Paul Bakker96743fc2011-02-12 14:30:57 +00005940Features
5941 * Parsing PEM private keys encrypted with DES and AES
5942 are now supported as well (Fixes ticket #5)
Paul Bakkera9507c02011-02-12 15:27:28 +00005943 * Added crl_app program to allow easy reading and
5944 printing of X509 CRLs from file
Paul Bakker96743fc2011-02-12 14:30:57 +00005945
5946Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01005947 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00005948 ticket #13). Also possible to remove PEM support for
Paul Bakkera35aa542013-03-06 17:06:21 +01005949 systems only using DER encoding
Paul Bakker96743fc2011-02-12 14:30:57 +00005950
Paul Bakker400ff6f2011-02-20 10:40:16 +00005951Bugfixes
5952 * Corrected parsing of UTCTime dates before 1990 and
5953 after 1950
5954 * Support more exotic OID's when parsing certificates
Darryl Green11999bb2018-03-13 15:22:58 +00005955 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005956 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00005957 certificates (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005958 * Replaced the expired test certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00005959 * Do not bail out if no client certificate specified. Try
5960 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakkera35aa542013-03-06 17:06:21 +01005961 found by Boris Krasnovskiy)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005962
Paul Bakker345a6fe2011-02-28 21:20:02 +00005963Security fixes
5964 * Fixed a possible Man-in-the-Middle attack on the
5965 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakkera35aa542013-03-06 17:06:21 +01005966 Subreption LLC)
Paul Bakker345a6fe2011-02-28 21:20:02 +00005967
Paul Bakker9fc46592011-01-30 16:59:02 +00005968= Version 0.99-pre1 released on 2011-01-30
Paul Bakker37ca75d2011-01-06 12:28:03 +00005969Features
Paul Bakkerb63b0af2011-01-13 17:54:59 +00005970Note: Most of these features have been donated by Fox-IT
5971 * Added Doxygen source code documentation parts
Paul Bakker1b57b062011-01-06 15:48:19 +00005972 * Added reading of DHM context from memory and file
Paul Bakker74111d32011-01-15 16:57:55 +00005973 * Improved X509 certificate parsing to include extended
Paul Bakker76fd75a2011-01-16 21:12:10 +00005974 certificate fields, including Key Usage
5975 * Improved certificate verification and verification
5976 against the available CRLs
Paul Bakker1f87fb62011-01-15 17:32:24 +00005977 * Detection for DES weak keys and parity bits added
Paul Bakker72f62662011-01-16 21:27:44 +00005978 * Improvements to support integration in other
5979 applications:
5980 + Added generic message digest and cipher wrapper
5981 + Improved information about current capabilities,
5982 status, objects and configuration
5983 + Added verification callback on certificate chain
5984 verification to allow external blacklisting
Darryl Green11999bb2018-03-13 15:22:58 +00005985 + Additional example programs to show usage
Paul Bakker43b7e352011-01-18 15:27:19 +00005986 * Added support for PKCS#11 through the use of the
5987 libpkcs11-helper library
Paul Bakker37ca75d2011-01-06 12:28:03 +00005988
Paul Bakkerb6194992011-01-16 21:40:22 +00005989Changes
5990 * x509parse_time_expired() checks time in addition to
5991 the existing date check
Paul Bakkere3166ce2011-01-27 17:40:50 +00005992 * The ciphers member of ssl_context and the cipher member
5993 of ssl_session have been renamed to ciphersuites and
Paul Bakkera35aa542013-03-06 17:06:21 +01005994 ciphersuite respectively. This clarifies the difference
5995 with the generic cipher layer and is better naming
5996 altogether
Paul Bakkerb6194992011-01-16 21:40:22 +00005997
Paul Bakker99ed6782011-01-05 14:48:42 +00005998= Version 0.14.0 released on 2010-08-16
5999Features
6000 * Added support for SSL_EDH_RSA_AES_128_SHA and
6001 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
6002 * Added compile-time and run-time version information
6003 * Expanded ssl_client2 arguments for more flexibility
6004 * Added support for TLS v1.1
6005
6006Changes
6007 * Made Makefile cleaner
6008 * Removed dependency on rand() in rsa_pkcs1_encrypt().
6009 Now using random fuction provided to function and
Paul Bakkera35aa542013-03-06 17:06:21 +01006010 changed the prototype of rsa_pkcs1_encrypt(),
6011 rsa_init() and rsa_gen_key().
Paul Bakker99ed6782011-01-05 14:48:42 +00006012 * Some SSL defines were renamed in order to avoid
6013 future confusion
6014
6015Bug fixes
6016 * Fixed CMake out of source build for tests (found by
6017 kkert)
6018 * rsa_check_private() now supports PKCS1v2 keys as well
6019 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
6020 generator
6021
6022= Version 0.13.1 released on 2010-03-24
6023Bug fixes
6024 * Fixed Makefile in library that was mistakenly merged
6025 * Added missing const string fixes
6026
6027= Version 0.13.0 released on 2010-03-21
6028Features
6029 * Added option parsing for host and port selection to
6030 ssl_client2
6031 * Added support for GeneralizedTime in X509 parsing
6032 * Added cert_app program to allow easy reading and
6033 printing of X509 certificates from file or SSL
6034 connection.
6035
6036Changes
6037 * Added const correctness for main code base
6038 * X509 signature algorithm determination is now
6039 in a function to allow easy future expansion
6040 * Changed symmetric cipher functions to
6041 identical interface (returning int result values)
Paul Bakker60b1d102013-10-29 10:02:51 +01006042 * Changed ARC4 to use separate input/output buffer
Paul Bakker99ed6782011-01-05 14:48:42 +00006043 * Added reset function for HMAC context as speed-up
6044 for specific use-cases
6045
6046Bug fixes
6047 * Fixed bug resulting in failure to send the last
6048 certificate in the chain in ssl_write_certificate() and
6049 ssl_write_certificate_request() (found by fatbob)
6050 * Added small fixes for compiler warnings on a Mac
6051 (found by Frank de Brabander)
6052 * Fixed algorithmic bug in mpi_is_prime() (found by
6053 Smbat Tonoyan)
6054
6055= Version 0.12.1 released on 2009-10-04
6056Changes
6057 * Coverage test definitions now support 'depends_on'
6058 tagging system.
6059 * Tests requiring specific hashing algorithms now honor
6060 the defines.
6061
6062Bug fixes
6063 * Changed typo in #ifdef in x509parse.c (found
6064 by Eduardo)
6065
6066= Version 0.12.0 released on 2009-07-28
6067Features
6068 * Added CMake makefiles as alternative to regular Makefiles.
6069 * Added preliminary Code Coverage tests for AES, ARC4,
6070 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
6071 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
6072 and X509parse.
6073
6074Changes
6075 * Error codes are not (necessarily) negative. Keep
6076 this is mind when checking for errors.
6077 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
6078 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
6079 * Changed interface for AES and Camellia setkey functions
6080 to indicate invalid key lengths.
6081
6082Bug fixes
6083 * Fixed include location of endian.h on FreeBSD (found by
6084 Gabriel)
6085 * Fixed include location of endian.h and name clash on
6086 Apples (found by Martin van Hensbergen)
6087 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
6088 required HMAC ipad and opad variables are not cleared.
6089 (found by code coverage tests)
Hanno Becker01a0e072017-07-26 11:49:40 +01006090 * Prevented use of long long in bignum if
Paul Bakker99ed6782011-01-05 14:48:42 +00006091 POLARSSL_HAVE_LONGLONG not defined (found by Giles
6092 Bathgate).
6093 * Fixed incorrect handling of negative strings in
6094 mpi_read_string() (found by code coverage tests).
6095 * Fixed segfault on handling empty rsa_context in
6096 rsa_check_pubkey() and rsa_check_privkey() (found by
6097 code coverage tests).
6098 * Fixed incorrect handling of one single negative input
6099 value in mpi_add_abs() (found by code coverage tests).
6100 * Fixed incorrect handling of negative first input
6101 value in mpi_sub_abs() (found by code coverage tests).
6102 * Fixed incorrect handling of negative first input
6103 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
6104 change also affects mpi_write_string() (found by code
6105 coverage tests).
6106 * Corrected is_prime() results for 0, 1 and 2 (found by
6107 code coverage tests).
6108 * Fixed Camellia and XTEA for 64-bit Windows systems.
6109
6110= Version 0.11.1 released on 2009-05-17
6111 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
6112 SHA-512 in rsa_pkcs1_sign()
6113
6114= Version 0.11.0 released on 2009-05-03
6115 * Fixed a bug in mpi_gcd() so that it also works when both
6116 input numbers are even and added testcases to check
6117 (found by Pierre Habouzit).
6118 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
6119 one way hash functions with the PKCS#1 v1.5 signing and
6120 verification.
6121 * Fixed minor bug regarding mpi_gcd located within the
6122 POLARSSL_GENPRIME block.
6123 * Fixed minor memory leak in x509parse_crt() and added better
6124 handling of 'full' certificate chains (found by Mathias
6125 Olsson).
6126 * Centralized file opening and reading for x509 files into
6127 load_file()
6128 * Made definition of net_htons() endian-clean for big endian
6129 systems (Found by Gernot).
6130 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
Hanno Becker01a0e072017-07-26 11:49:40 +01006131 padlock and timing code.
Paul Bakker99ed6782011-01-05 14:48:42 +00006132 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
6133 responsible for crashes and unwanted behaviour.
6134 * Added support for Certificate Revocation List (CRL) parsing.
6135 * Added support for CRL revocation to x509parse_verify() and
6136 SSL/TLS code.
6137 * Fixed compatibility of XTEA and Camellia on a 64-bit system
6138 (found by Felix von Leitner).
6139
6140= Version 0.10.0 released on 2009-01-12
6141 * Migrated XySSL to PolarSSL
6142 * Added XTEA symmetric cipher
6143 * Added Camellia symmetric cipher
6144 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
6145 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
6146 * Fixed dangerous bug that can cause a heap overflow in
6147 rsa_pkcs1_decrypt (found by Christophe Devine)
6148
6149================================================================
6150XySSL ChangeLog
6151
6152= Version 0.9 released on 2008-03-16
6153
6154 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
6155 * Enabled support for large files by default in aescrypt2.c
6156 * Preliminary openssl wrapper contributed by David Barrett
6157 * Fixed a bug in ssl_write() that caused the same payload to
6158 be sent twice in non-blocking mode when send returns EAGAIN
6159 * Fixed ssl_parse_client_hello(): session id and challenge must
6160 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
6161 * Added user-defined callback debug function (Krystian Kolodziej)
6162 * Before freeing a certificate, properly zero out all cert. data
6163 * Fixed the "mode" parameter so that encryption/decryption are
6164 not swapped on PadLock; also fixed compilation on older versions
6165 of gcc (bug reported by David Barrett)
6166 * Correctly handle the case in padlock_xcryptcbc() when input or
Antonin Décimo36e89b52019-01-23 15:24:37 +01006167 output data is non-aligned by falling back to the software
Paul Bakker99ed6782011-01-05 14:48:42 +00006168 implementation, as VIA Nehemiah cannot handle non-aligned buffers
6169 * Fixed a memory leak in x509parse_crt() which was reported by Greg
6170 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
6171 Matthew Page who reported several bugs
6172 * Fixed x509_get_ext() to accept some rare certificates which have
6173 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
6174 * Added support on the client side for the TLS "hostname" extension
6175 (patch contributed by David Patino)
6176 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
6177 string is passed as the CN (bug reported by spoofy)
6178 * Added an option to enable/disable the BN assembly code
6179 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
6180 * Disabled obsolete hash functions by default (MD2, MD4); updated
6181 selftest and benchmark to not test ciphers that have been disabled
6182 * Updated x509parse_cert_info() to correctly display byte 0 of the
6183 serial number, setup correct server port in the ssl client example
6184 * Fixed a critical denial-of-service with X.509 cert. verification:
6185 peer may cause xyssl to loop indefinitely by sending a certificate
6186 for which the RSA signature check fails (bug reported by Benoit)
6187 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
6188 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
6189 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
6190 * Modified ssl_parse_client_key_exchange() to protect against
6191 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
6192 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
6193 * Updated rsa_gen_key() so that ctx->N is always nbits in size
6194 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
6195 David Barrett and Dusan Semen
6196
6197= Version 0.8 released on 2007-10-20
6198
6199 * Modified the HMAC functions to handle keys larger
6200 than 64 bytes, thanks to Stephane Desneux and gary ng
6201 * Fixed ssl_read_record() to properly update the handshake
6202 message digests, which fixes IE6/IE7 client authentication
6203 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
6204 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
6205 * Added user-defined callbacks for handling I/O and sessions
6206 * Added lots of debugging output in the SSL/TLS functions
6207 * Added preliminary X.509 cert. writing by Pascal Vizeli
6208 * Added preliminary support for the VIA PadLock routines
6209 * Added AES-CFB mode of operation, contributed by chmike
6210 * Added an SSL/TLS stress testing program (ssl_test.c)
6211 * Updated the RSA PKCS#1 code to allow choosing between
6212 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
6213 * Updated ssl_read() to skip 0-length records from OpenSSL
6214 * Fixed the make install target to comply with *BSD make
6215 * Fixed a bug in mpi_read_binary() on 64-bit platforms
6216 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
6217 * Fixed a long standing memory leak in mpi_is_prime()
6218 * Replaced realloc with malloc in mpi_grow(), and set
6219 the sign of zero as positive in mpi_init() (reported
6220 by Jonathan M. McCune)
6221
6222= Version 0.7 released on 2007-07-07
6223
6224 * Added support for the MicroBlaze soft-core processor
6225 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
6226 connections from being established with non-blocking I/O
6227 * Fixed a couple bugs in the VS6 and UNIX Makefiles
6228 * Fixed the "PIC register ebx clobbered in asm" bug
6229 * Added HMAC starts/update/finish support functions
6230 * Added the SHA-224, SHA-384 and SHA-512 hash functions
6231 * Fixed the net_set_*block routines, thanks to Andreas
6232 * Added a few demonstration programs: md5sum, sha1sum,
6233 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
6234 * Added new bignum import and export helper functions
6235 * Rewrote README.txt in program/ssl/ca to better explain
6236 how to create a test PKI
6237
6238= Version 0.6 released on 2007-04-01
6239
6240 * Ciphers used in SSL/TLS can now be disabled at compile
6241 time, to reduce the memory footprint on embedded systems
6242 * Added multiply assembly code for the TriCore and modified
6243 havege_struct for this processor, thanks to David Patiño
6244 * Added multiply assembly code for 64-bit PowerPCs,
6245 thanks to Peking University and the OSU Open Source Lab
6246 * Added experimental support of Quantum Cryptography
6247 * Added support for autoconf, contributed by Arnaud Cornet
6248 * Fixed "long long" compilation issues on IA-64 and PPC64
6249 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
6250 was not being correctly defined on ARM and MIPS
6251
6252= Version 0.5 released on 2007-03-01
6253
6254 * Added multiply assembly code for SPARC and Alpha
6255 * Added (beta) support for non-blocking I/O operations
6256 * Implemented session resuming and client authentication
6257 * Fixed some portability issues on WinCE, MINIX 3, Plan9
6258 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
6259 * Improved the performance of the EDH key exchange
6260 * Fixed a bug that caused valid packets with a payload
6261 size of 16384 bytes to be rejected
6262
6263= Version 0.4 released on 2007-02-01
6264
6265 * Added support for Ephemeral Diffie-Hellman key exchange
6266 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
6267 * Various improvement to the modular exponentiation code
6268 * Rewrote the headers to generate the API docs with doxygen
6269 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
6270 generated) and in ssl_parse_client_hello (max. client
6271 version was not properly set), thanks to Didier Rebeix
6272 * Fixed another bug in ssl_parse_client_hello: clients with
6273 cipherlists larger than 96 bytes were incorrectly rejected
6274 * Fixed a couple memory leak in x509_read.c
6275
6276= Version 0.3 released on 2007-01-01
6277
6278 * Added server-side SSLv3 and TLSv1.0 support
6279 * Multiple fixes to enhance the compatibility with g++,
6280 thanks to Xosé Antón Otero Ferreira
6281 * Fixed a bug in the CBC code, thanks to dowst; also,
Paul Bakker60b1d102013-10-29 10:02:51 +01006282 the bignum code is no longer dependent on long long
Paul Bakker99ed6782011-01-05 14:48:42 +00006283 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
6284 * Updated timing.c for improved compatibility with i386
6285 and 486 processors, thanks to Arnaud Cornet
6286
6287= Version 0.2 released on 2006-12-01
6288
6289 * Updated timing.c to support ARM and MIPS arch
6290 * Updated the MPI code to support 8086 on MSVC 1.5
6291 * Added the copyright notice at the top of havege.h
6292 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
6293 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
6294 * Fixed a bug reported by Torsten Lauter in ssl_read_record
6295 * Fixed a bug in rsa_check_privkey that would wrongly cause
6296 valid RSA keys to be dismissed (thanks to oldwolf)
6297 * Fixed a bug in mpi_is_prime that caused some primes to fail
6298 the Miller-Rabin primality test
6299
6300 I'd also like to thank Younès Hafri for the CRUX linux port,
6301 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
6302 who maintains the Debian package :-)
6303
6304= Version 0.1 released on 2006-11-01