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Paul Elliott2238eed2022-07-08 18:19:12 +01001Mbed TLS ChangeLog (Sorted per branch, date)
2
Dave Rodgman69591e92022-12-08 14:59:54 +00003= Mbed TLS 3.3.0 branch released 2022-12-14
4
5API changes
6 * Add an ad-hoc key derivation function handling EC J-PAKE to PMS
7 calculation that can be used to derive the session secret in TLS 1.2,
8 as described in draft-cragie-tls-ecjpake-01. This can be achieved by
9 using PSA_ALG_TLS12_ECJPAKE_TO_PMS as the key derivation algorithm.
10
11Default behavior changes
12 * Previously the macro MBEDTLS_SSL_DTLS_CONNECTION_ID implemented version 05
13 of the IETF draft, and was marked experimental and disabled by default.
14 It is now no longer experimental, and implements the final version from
15 RFC 9146, which is not interoperable with the draft-05 version.
16 If you need to communicate with peers that use earlier versions of
17 Mbed TLS, then you need to define MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT
18 to 1, but then you won't be able to communicate with peers that use the
19 standard (non-draft) version.
20 If you need to interoperate with both classes of peers with the
21 same build of Mbed TLS, please let us know about your situation on the
22 mailing list or GitHub.
23
24Requirement changes
25 * When building with PSA drivers using generate_driver_wrappers.py, or
26 when building the library from the development branch rather than
27 from a release, the Python module jsonschema is now necessary, in
28 addition to jinja2. The official list of required Python modules is
29 maintained in scripts/basic.requirements.txt and may change again
30 in the future.
31
32New deprecations
33 * Deprecate mbedtls_asn1_free_named_data().
34 Use mbedtls_asn1_free_named_data_list()
35 or mbedtls_asn1_free_named_data_list_shallow().
36
37Features
38 * Support rsa_pss_rsae_* signature algorithms in TLS 1.2.
39 * make: enable building unversioned shared library, with e.g.:
40 "SHARED=1 SOEXT_TLS=so SOEXT_X509=so SOEXT_CRYPTO=so make lib"
41 resulting in library names like "libmbedtls.so" rather than
42 "libmbedcrypto.so.11".
43 * Expose the EC J-PAKE functionality through the Draft PSA PAKE Crypto API.
44 Only the ECC primitive with secp256r1 curve and SHA-256 hash algorithm
45 are supported in this implementation.
46 * Some modules can now use PSA drivers for hashes, including with no
47 built-in implementation present, but only in some configurations.
48 - RSA OAEP and PSS (PKCS#1 v2.1), PKCS5, PKCS12 and EC J-PAKE now use
49 hashes from PSA when (and only when) MBEDTLS_MD_C is disabled.
50 - PEM parsing of encrypted files now uses MD-5 from PSA when (and only
51 when) MBEDTLS_MD5_C is disabled.
52 See the documentation of the corresponding macros in mbedtls_config.h for
53 details.
54 Note that some modules are not able to use hashes from PSA yet, including
55 the entropy module. As a consequence, for now the only way to build with
56 all hashes only provided by drivers (no built-in hash) is to use
57 MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG.
58 * When MBEDTLS_USE_PSA_CRYPTO is enabled, X.509, TLS 1.2 and TLS 1.3 now
59 properly negotiate/accept hashes based on their availability in PSA.
60 As a consequence, they now work in configurations where the built-in
61 implementations of (some) hashes are excluded and those hashes are only
62 provided by PSA drivers. (See previous entry for limitation on RSA-PSS
63 though: that module only use hashes from PSA when MBEDTLS_MD_C is off).
64 * Add support for opaque keys as the private keys associated to certificates
65 for authentication in TLS 1.3.
66 * Add the LMS post-quantum-safe stateful-hash asymmetric signature scheme.
67 Signature verification is production-ready, but generation is for testing
68 purposes only. This currently only supports one parameter set
69 (LMS_SHA256_M32_H10), meaning that each private key can be used to sign
70 1024 messages. As such, it is not intended for use in TLS, but instead
71 for verification of assets transmitted over an insecure channel,
72 particularly firmware images.
73 * Add the LM-OTS post-quantum-safe one-time signature scheme, which is
74 required for LMS. This can be used independently, but each key can only
75 be used to sign one message so is impractical for most circumstances.
76 * Mbed TLS now supports TLS 1.3 key establishment via pre-shared keys.
77 The pre-shared keys can be provisioned externally or via the ticket
78 mechanism (session resumption).
79 The ticket mechanism is supported when the configuration option
80 MBEDTLS_SSL_SESSION_TICKETS is enabled.
81 New options MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_xxx_ENABLED
82 control the support for the three possible TLS 1.3 key exchange modes.
83 * cert_write: support for setting extended key usage attributes. A
84 corresponding new public API call has been added in the library,
85 mbedtls_x509write_crt_set_ext_key_usage().
86 * cert_write: support for writing certificate files in either PEM
87 or DER format.
88 * The PSA driver wrapper generator generate_driver_wrappers.py now
89 supports a subset of the driver description language, including
90 the following entry points: import_key, export_key, export_public_key,
91 get_builtin_key, copy_key.
92 * The new functions mbedtls_asn1_free_named_data_list() and
93 mbedtls_asn1_free_named_data_list_shallow() simplify the management
94 of memory in named data lists in X.509 structures.
95 * The TLS 1.2 EC J-PAKE key exchange can now use the PSA Crypto API.
96 Additional PSA key slots will be allocated in the process of such key
97 exchange for builds that enable MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED and
98 MBEDTLS_USE_PSA_CRYPTO.
99 * Add support for DTLS Connection ID as defined by RFC 9146, controlled by
100 MBEDTLS_SSL_DTLS_CONNECTION_ID (enabled by default) and configured with
101 mbedtls_ssl_set_cid().
102 * Add a driver dispatch layer for raw key agreement, enabling alternative
103 implementations of raw key agreement through the key_agreement driver
104 entry point. This entry point is specified in the proposed PSA driver
105 interface, but had not yet been implemented.
106
107Security
108 * Fix potential heap buffer overread and overwrite in DTLS if
109 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
110 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
111 * An adversary with access to precise enough information about memory
112 accesses (typically, an untrusted operating system attacking a secure
113 enclave) could recover an RSA private key after observing the victim
114 performing a single private-key operation if the window size used for the
115 exponentiation was 3 or smaller. Found and reported by Zili KOU,
116 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
117 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
118 and Test in Europe 2023.
119
120Bugfix
121 * Refactor mbedtls_aes_context to support shallow-copying. Fixes #2147.
122 * Fix an issue with in-tree CMake builds in releases with GEN_FILES
123 turned off: if a shipped file was missing from the working directory,
124 it could be turned into a symbolic link to itself.
125 * Fix a long-standing build failure when building x86 PIC code with old
126 gcc (4.x). The code will be slower, but will compile. We do however
127 recommend upgrading to a more recent compiler instead. Fixes #1910.
128 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
129 Contributed by Kazuyuki Kimura to fix #2020.
130 * Use double quotes to include private header file psa_crypto_cipher.h.
131 Fixes 'file not found with <angled> include' error
132 when building with Xcode.
133 * Fix handling of broken symlinks when loading certificates using
134 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
135 broken link is encountered, skip the broken link and continue parsing
136 other certificate files. Contributed by Eduardo Silva in #2602.
137 * Fix an interoperability failure between an Mbed TLS client with both
138 TLS 1.2 and TLS 1.3 support, and a TLS 1.2 server that supports
139 rsa_pss_rsae_* signature algorithms. This failed because Mbed TLS
140 advertised support for PSS in both TLS 1.2 and 1.3, but only
141 actually supported PSS in TLS 1.3.
142 * Fix a compilation error when using CMake with an IAR toolchain.
143 Fixes #5964.
144 * Fix a build error due to a missing prototype warning when
145 MBEDTLS_DEPRECATED_REMOVED is enabled.
146 * Fix mbedtls_ctr_drbg_free() on an initialized but unseeded context. When
147 MBEDTLS_AES_ALT is enabled, it could call mbedtls_aes_free() on an
148 uninitialized context.
149 * Fix a build issue on Windows using CMake where the source and build
150 directories could not be on different drives. Fixes #5751.
151 * Fix bugs and missing dependencies when building and testing
152 configurations with only one encryption type enabled in TLS 1.2.
153 * Provide the missing definition of mbedtls_setbuf() in some configurations
154 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
155 * Fix compilation errors when trying to build with
156 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
157 * Fix memory leak in ssl_parse_certificate_request() caused by
158 mbedtls_x509_get_name() not freeing allocated objects in case of error.
159 Change mbedtls_x509_get_name() to clean up allocated objects on error.
160 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
161 MBEDTLS_USE_PSA_CRYPTO or MBEDTLS_PK_WRITE_C. Fixes #6408.
162 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
163 MBEDTLS_PK_PARSE_C. Fixes #6409.
164 * Fix ECDSA verification, where it was not always validating the
165 public key. This bug meant that it was possible to verify a
166 signature with an invalid public key, in some cases. Reported by
167 Guido Vranken using Cryptofuzz in #4420.
168 * Fix a possible null pointer dereference if a memory allocation fails
169 in TLS PRF code. Reported by Michael Madsen in #6516.
170 * Fix TLS 1.3 session resumption. Fixes #6488.
171 * Add a configuration check to exclude optional client authentication
172 in TLS 1.3 (where it is forbidden).
173 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
174 bytes when parsing certificates containing a binary RFC 4108
175 HardwareModuleName as a Subject Alternative Name extension. Hardware
176 serial numbers are now rendered in hex format. Fixes #6262.
177 * Fix bug in error reporting in dh_genprime.c where upon failure,
178 the error code returned by mbedtls_mpi_write_file() is overwritten
179 and therefore not printed.
180 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
181 with A > 0 created an unintended representation of the value 0 which was
182 not processed correctly by some bignum operations. Fix this. This had no
183 consequence on cryptography code, but might affect applications that call
184 bignum directly and use negative numbers.
185 * Fix a bug whereby the list of signature algorithms sent as part of
186 the TLS 1.2 server certificate request would get corrupted, meaning the
187 first algorithm would not get sent and an entry consisting of two random
188 bytes would be sent instead. Found by Serban Bejan and Dudek Sebastian.
189 * Fix undefined behavior (typically harmless in practice) of
190 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
191 when both operands are 0 and the left operand is represented with 0 limbs.
192 * Fix undefined behavior (typically harmless in practice) when some bignum
193 functions receive the most negative value of mbedtls_mpi_sint. Credit
194 to OSS-Fuzz. Fixes #6597.
195 * Fix undefined behavior (typically harmless in practice) in PSA ECB
196 encryption and decryption.
197 * Move some SSL-specific code out of libmbedcrypto where it had been placed
198 accidentally.
199 * Fix a build error when compiling the bignum module for some Arm platforms.
200 Fixes #6089, #6124, #6217.
201
202Changes
203 * Add the ability to query PSA_WANT_xxx macros to query_compile_time_config.
204 * Calling AEAD tag-specific functions for non-AEAD algorithms (which
205 should not be done - they are documented for use only by AES-GCM and
206 ChaCha20+Poly1305) now returns MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
207 instead of success (0).
208
Paul Elliott869298b2022-07-12 10:39:42 +0100209= Mbed TLS 3.2.1 branch released 2022-07-12
210
211Bugfix
212 * Re-add missing generated file library/ssl_debug_helpers_generated.c
213
Paul Elliott2238eed2022-07-08 18:19:12 +0100214= Mbed TLS 3.2.0 branch released 2022-07-11
215
216Default behavior changes
217 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
218 for IV lengths other than 12. The library was silently overwriting this
219 length with 12, but did not inform the caller about it. Fixes #4301.
220
221Requirement changes
222 * The library will no longer compile out of the box on a platform without
223 setbuf(). If your platform does not have setbuf(), you can configure an
224 alternative function by enabling MBEDTLS_PLATFORM_SETBUF_ALT or
225 MBEDTLS_PLATFORM_SETBUF_MACRO.
226
227New deprecations
228 * Deprecate mbedtls_ssl_conf_max_version() and
229 mbedtls_ssl_conf_min_version() in favor of
230 mbedtls_ssl_conf_max_tls_version() and
231 mbedtls_ssl_conf_min_tls_version().
232 * Deprecate mbedtls_cipher_setup_psa(). Use psa_aead_xxx() or
233 psa_cipher_xxx() directly instead.
234 * Secure element drivers enabled by MBEDTLS_PSA_CRYPTO_SE_C are deprecated.
235 This was intended as an experimental feature, but had not been explicitly
236 documented as such. Use opaque drivers with the interface enabled by
237 MBEDTLS_PSA_CRYPTO_DRIVERS instead.
238 * Deprecate mbedtls_ssl_conf_sig_hashes() in favor of the more generic
239 mbedtls_ssl_conf_sig_algs(). Signature algorithms for the TLS 1.2 and
240 TLS 1.3 handshake should now be configured with
241 mbedtls_ssl_conf_sig_algs().
242
243Features
244 * Add accessor to obtain ciphersuite id from ssl context.
245 * Add accessors to get members from ciphersuite info.
246 * Add mbedtls_ssl_ticket_rotate() for external ticket rotation.
247 * Add accessor to get the raw buffer pointer from a PEM context.
248 * The structures mbedtls_ssl_config and mbedtls_ssl_context now store
249 a piece of user data which is reserved for the application. The user
250 data can be either a pointer or an integer.
251 * Add an accessor function to get the configuration associated with
252 an SSL context.
253 * Add a function to access the protocol version from an SSL context in a
254 form that's easy to compare. Fixes #5407.
255 * Add function mbedtls_md_info_from_ctx() to recall the message digest
256 information that was used to set up a message digest context.
257 * Add ALPN support in TLS 1.3 clients.
258 * Add server certificate selection callback near end of Client Hello.
259 Register callback with mbedtls_ssl_conf_cert_cb().
260 * Provide mechanism to reset handshake cert list by calling
261 mbedtls_ssl_set_hs_own_cert() with NULL value for own_cert param.
262 * Add accessor mbedtls_ssl_get_hs_sni() to retrieve SNI from within
263 cert callback (mbedtls_ssl_conf_cert_cb()) during handshake.
264 * The X.509 module now uses PSA hash acceleration if present.
265 * Add support for psa crypto key derivation for elliptic curve
266 keys. Fixes #3260.
267 * Add function mbedtls_timing_get_final_delay() to access the private
268 final delay field in an mbedtls_timing_delay_context, as requested in
269 #5183.
270 * Add mbedtls_pk_sign_ext() which allows generating RSA-PSS signatures when
271 PSA Crypto is enabled.
272 * Add function mbedtls_ecp_export() to export ECP key pair parameters.
273 Fixes #4838.
274 * Add function mbedtls_ssl_is_handshake_over() to enable querying if the SSL
275 Handshake has completed or not, and thus whether to continue calling
276 mbedtls_ssl_handshake_step(), requested in #4383.
277 * Add the function mbedtls_ssl_get_own_cid() to access our own connection id
278 within mbedtls_ssl_context, as requested in #5184.
279 * Introduce mbedtls_ssl_hs_cb_t typedef for use with
280 mbedtls_ssl_conf_cert_cb() and perhaps future callbacks
281 during TLS handshake.
282 * Add functions mbedtls_ssl_conf_max_tls_version() and
283 mbedtls_ssl_conf_min_tls_version() that use a single value to specify
284 the protocol version.
285 * Extend the existing PSA_ALG_TLS12_PSK_TO_MS() algorithm to support
286 mixed-PSK. Add an optional input PSA_KEY_DERIVATION_INPUT_OTHER_SECRET
287 holding the other secret.
288 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
289 feature requirements in the file named by the new macro
290 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
291 Furthermore you may name an additional file to include after the main
292 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
293 * Add the function mbedtls_x509_crt_has_ext_type() to access the ext types
294 field within mbedtls_x509_crt context, as requested in #5585.
295 * Add HKDF-Expand and HKDF-Extract as separate algorithms in the PSA API.
296 * Add support for the ARMv8 SHA-2 acceleration instructions when building
297 for Aarch64.
298 * Add support for authentication of TLS 1.3 clients by TLS 1.3 servers.
299 * Add support for server HelloRetryRequest message. The TLS 1.3 client is
300 now capable of negotiating another shared secret if the one sent in its
301 first ClientHello was not suitable to the server.
302 * Add support for client-side TLS version negotiation. If both TLS 1.2 and
303 TLS 1.3 protocols are enabled in the build of Mbed TLS, the TLS client now
304 negotiates TLS 1.3 or TLS 1.2 with TLS servers.
305 * Enable building of Mbed TLS with TLS 1.3 protocol support but without TLS
306 1.2 protocol support.
307 * Mbed TLS provides an implementation of a TLS 1.3 server (ephemeral key
308 establishment only). See docs/architecture/tls13-support.md for a
309 description of the support. The MBEDTLS_SSL_PROTO_TLS1_3 and
310 MBEDTLS_SSL_SRV_C configuration options control this.
311 * Add accessors to configure DN hints for certificate request:
312 mbedtls_ssl_conf_dn_hints() and mbedtls_ssl_set_hs_dn_hints()
313 * The configuration option MBEDTLS_USE_PSA_CRYPTO, which previously
314 affected only a limited subset of crypto operations in TLS, X.509 and PK,
315 now causes most of them to be done using PSA Crypto; see
316 docs/use-psa-crypto.md for the list of exceptions.
317 * The function mbedtls_pk_setup_opaque() now supports RSA key pairs as well.
318 Opaque keys can now be used everywhere a private key is expected in the
319 TLS and X.509 modules.
320 * Opaque pre-shared keys for TLS, provisioned with
321 mbedtls_ssl_conf_psk_opaque() or mbedtls_ssl_set_hs_psk_opaque(), which
322 previously only worked for "pure" PSK key exchange, now can also be used
323 for the "mixed" PSK key exchanges as well: ECDHE-PSK, DHE-PSK, RSA-PSK.
324 * cmake now detects if it is being built as a sub-project, and in that case
325 disables the target export/installation and package configuration.
326 * Make USE_PSA_CRYPTO compatible with KEY_ID_ENCODES_OWNER. Fixes #5259.
327 * Add example programs cipher_aead_demo.c, md_hmac_demo.c, aead_demo.c
328 and hmac_demo.c, which use PSA and the md/cipher interfaces side
329 by side in order to illustrate how the operation is performed in PSA.
330 Addresses #5208.
331
332Security
333 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
334 module before freeing them. These buffers contain secret key material, and
335 could thus potentially leak the key through freed heap.
336 * Fix potential memory leak inside mbedtls_ssl_cache_set() with
337 an invalid session id length.
338 * Add the platform function mbedtls_setbuf() to allow buffering to be
339 disabled on stdio files, to stop secrets loaded from said files being
340 potentially left in memory after file operations. Reported by
341 Glenn Strauss.
342 * Fix a potential heap buffer overread in TLS 1.2 server-side when
343 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
344 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
345 is selected. This may result in an application crash or potentially an
346 information leak.
347 * Fix a buffer overread in DTLS ClientHello parsing in servers with
348 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
349 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
350 after the end of the SSL input buffer. The buffer overread only happens
351 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
352 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
353 and possibly up to 571 bytes with a custom cookie check function.
354 Reported by the Cybeats PSI Team.
355 * Fix a buffer overread in TLS 1.3 Certificate parsing. An unauthenticated
356 client or server could cause an MbedTLS server or client to overread up
357 to 64 kBytes of data and potentially overread the input buffer by that
358 amount minus the size of the input buffer. As overread data undergoes
359 various checks, the likelihood of reaching the boundary of the input
360 buffer is rather small but increases as its size
361 MBEDTLS_SSL_IN_CONTENT_LEN decreases.
362 * Fix check of certificate key usage in TLS 1.3. The usage of the public key
363 provided by a client or server certificate for authentication was not
364 checked properly when validating the certificate. This could cause a
365 client or server to be able to authenticate itself through a certificate
366 to an Mbed TLS TLS 1.3 server or client while it does not own a proper
367 certificate to do so.
368
369Bugfix
370 * Declare or use PSA_WANT_ALG_CCM_STAR_NO_TAG following the general
371 pattern for PSA_WANT_xxx symbols. Previously you had to specify
372 PSA_WANT_ALG_CCM for PSA_ALG_CCM_STAR_NO_TAG.
373 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
374 * Fixed swap of client and server random bytes when exporting them alongside
375 TLS 1.3 handshake and application traffic secret.
376 * Fix several bugs (warnings, compiler and linker errors, test failures)
377 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
378 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
379 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
380 client would fail to check that the curve selected by the server for
381 ECDHE was indeed one that was offered. As a result, the client would
382 accept any curve that it supported, even if that curve was not allowed
383 according to its configuration. Fixes #5291.
384 * The TLS 1.3 implementation is now compatible with the
385 MBEDTLS_USE_PSA_CRYPTO configuration option.
386 * Fix unit tests that used 0 as the file UID. This failed on some
387 implementations of PSA ITS. Fixes #3838.
388 * Fix mbedtls_ssl_get_version() not reporting TLSv1.3. Fixes #5406.
389 * Fix API violation in mbedtls_md_process() test by adding a call to
390 mbedtls_md_starts(). Fixes #2227.
391 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
392 to catch bad uses of time.h.
393 * Fix a race condition in out-of-source builds with CMake when generated data
394 files are already present. Fixes #5374.
395 * Fix the library search path when building a shared library with CMake
396 on Windows.
397 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
398 potentially leading to corrupted alert messages being sent in case
399 the function needs to be re-called after initially returning
400 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
401 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but not
402 MBEDTLS_DEBUG_C, DTLS handshakes using CID would crash due to a null
403 pointer dereference. Fix this. Fixes #3998.
404 The fix was released, but not announced, in Mbed TLS 3.1.0.
405 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
406 documentation stated that the `allowed_pks` field applies to signatures
407 only, but in fact it does apply to the public key type of the end entity
408 certificate, too. Fixes #1992.
409 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
410 not NULL and val_len is zero.
411 * Fix compilation error with mingw32. Fixed by Cameron Cawley in #4211.
412 * Fix compilation error when using C++ Builder on Windows. Reported by
413 Miroslav Mastny in #4015.
414 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
415 applicable. Fixes #5735.
416 * Fix a bug in the x25519 example program where the removal of
417 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
418 #3191.
419 * Fix a TLS 1.3 handshake failure when the peer Finished message has not
420 been received yet when we first try to fetch it.
421 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
422 GeneralizedTime. Fixes #5465.
423 * Add mbedtls_x509_dn_get_next function to return the next relative DN in
424 an X509 name, to allow walking the name list. Fixes #5431.
425 * Fix order value of curve x448.
426 * Fix string representation of DNs when outputting values containing commas
427 and other special characters, conforming to RFC 1779. Fixes #769.
428 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
429 * Fix check_config.h to check that we have MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
430 when MBEDTLS_SSL_PROTO_TLS1_3 is specified, and make this and other
431 dependencies explicit in the documentation. Fixes #5610.
432 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
433 * Fix a TLS 1.3 handshake failure when the first attempt to send the client
434 Finished message on the network cannot be satisfied. Fixes #5499.
435 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
436 memory conditions.
437 * Fix server connection identifier setting for outgoing encrypted records
438 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
439 connection identifier, the Mbed TLS client now properly sends the server
440 connection identifier in encrypted record headers. Fix #5872.
441 * Fix a null pointer dereference when performing some operations on zero
442 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
443 by 2, and mbedtls_mpi_write_string() in base 2).
444 * Fix record sizes larger than 16384 being sometimes accepted despite being
445 non-compliant. This could not lead to a buffer overflow. In particular,
446 application data size was already checked correctly.
447 * Fix MBEDTLS_SVC_KEY_ID_GET_KEY_ID() and MBEDTLS_SVC_KEY_ID_GET_OWNER_ID()
448 which have been broken, resulting in compilation errors, since Mbed TLS
449 3.0.
450 * Ensure that TLS 1.2 ciphersuite/certificate and key selection takes into
451 account not just the type of the key (RSA vs EC) but also what it can
452 actually do. Resolves #5831.
453 * Fix CMake windows host detection, especially when cross compiling.
454 * Fix an error in make where the absence of a generated file caused
455 make to break on a clean checkout. Fixes #5340.
456 * Work around an MSVC ARM64 compiler bug causing incorrect behaviour
457 in mbedtls_mpi_exp_mod(). Reported by Tautvydas Žilys in #5467.
458 * Removed the prompt to exit from all windows build programs that was causing
459 issues in CI/CD environments.
460
461Changes
462 * The file library/psa_crypto_driver_wrappers.c is now generated
463 from a template. In the future, the generation will support
464 driver descriptions. For the time being, to customize this file,
465 see docs/proposed/psa-driver-wrappers-codegen-migration-guide.md
466 * Return PSA_ERROR_INVALID_ARGUMENT if the algorithm passed to one-shot
467 AEAD functions is not an AEAD algorithm. This aligns them with the
468 multipart functions, and the PSA Crypto API 1.1 specification.
469 * In mbedtls_pk_parse_key(), if no password is provided, don't allocate a
470 temporary variable on the heap. Suggested by Sergey Kanatov in #5304.
471 * Assume source files are in UTF-8 when using MSVC with CMake.
472 * Fix runtime library install location when building with CMake and MinGW.
473 DLLs are now installed in the bin directory instead of lib.
474 * cmake: Use GnuInstallDirs to customize install directories
475 Replace custom LIB_INSTALL_DIR variable with standard CMAKE_INSTALL_LIBDIR
476 variable. For backward compatibility, set CMAKE_INSTALL_LIBDIR if
477 LIB_INSTALL_DIR is set.
478 * Add a CMake option that enables static linking of the runtime library
479 in Microsoft Visual C++ compiler. Contributed by Microplankton.
480 * In CMake builds, add aliases for libraries so that the normal MbedTLS::*
481 targets work when MbedTLS is built as a subdirectory. This allows the
482 use of FetchContent, as requested in #5688.
Paul Bakker99ed6782011-01-05 14:48:42 +0000483
Ronald Cron1ffa6a52021-12-14 15:57:17 +0100484= mbed TLS 3.1.0 branch released 2021-12-17
Ronald Cron831cf482021-12-15 09:02:38 +0100485
486API changes
487 * New error code for GCM: MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL.
488 Alternative GCM implementations are expected to verify
489 the length of the provided output buffers and to return the
490 MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL in case the buffer length is too small.
491 * You can configure groups for a TLS key exchange with the new function
492 mbedtls_ssl_conf_groups(). It extends mbedtls_ssl_conf_curves().
493 * Declare a number of structure fields as public: the fields of
494 mbedtls_ecp_curve_info, the fields describing the result of ASN.1 and
495 X.509 parsing, and finally the field fd of mbedtls_net_context on
496 POSIX/Unix-like platforms.
497
498Requirement changes
499 * Sign-magnitude and one's complement representations for signed integers are
500 not supported. Two's complement is the only supported representation.
501
502New deprecations
503 * Deprecate mbedtls_ssl_conf_curves() in favor of the more generic
504 mbedtls_ssl_conf_groups().
505
506Removals
507 * Remove the partial support for running unit tests via Greentea on Mbed OS,
508 which had been unmaintained since 2018.
509
510Features
511 * Enable support for Curve448 via the PSA API. Contributed by
512 Archana Madhavan in #4626. Fixes #3399 and #4249.
513 * The identifier of the CID TLS extension can be configured by defining
514 MBEDTLS_TLS_EXT_CID at compile time.
515 * Implement the PSA multipart AEAD interface, currently supporting
516 ChaChaPoly and GCM.
517 * Warn if errors from certain functions are ignored. This is currently
518 supported on GCC-like compilers and on MSVC and can be configured through
519 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
520 (where supported) for critical functions where ignoring the return
521 value is almost always a bug. Enable the new configuration option
522 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
523 is currently implemented in the AES, DES and md modules, and will be
524 extended to other modules in the future.
525 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
526 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
527 * Add support for CCM*-no-tag cipher to the PSA.
528 Currently only 13-byte long IV's are supported.
529 For decryption a minimum of 16-byte long input is expected.
530 These restrictions may be subject to change.
Ronald Cron1ffa6a52021-12-14 15:57:17 +0100531 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Ronald Cron831cf482021-12-15 09:02:38 +0100532 * Add functions to get the IV and block size from cipher_info structs.
533 * Add functions to check if a cipher supports variable IV or key size.
534 * Add the internal implementation of and support for CCM to the PSA multipart
535 AEAD interface.
536 * Mbed TLS provides a minimum viable implementation of the TLS 1.3
537 protocol. See docs/architecture/tls13-support.md for the definition of
538 the TLS 1.3 Minimum Viable Product (MVP). The MBEDTLS_SSL_PROTO_TLS1_3
539 configuration option controls the enablement of the support. The APIs
540 mbedtls_ssl_conf_min_version() and mbedtls_ssl_conf_max_version() allow
541 to select the 1.3 version of the protocol to establish a TLS connection.
542 * Add PSA API definition for ARIA.
543
544Security
545 * Zeroize several intermediate variables used to calculate the expected
546 value when verifying a MAC or AEAD tag. This hardens the library in
547 case the value leaks through a memory disclosure vulnerability. For
548 example, a memory disclosure vulnerability could have allowed a
549 man-in-the-middle to inject fake ciphertext into a DTLS connection.
550 * In psa_aead_generate_nonce(), do not read back from the output buffer.
551 This fixes a potential policy bypass or decryption oracle vulnerability
552 if the output buffer is in memory that is shared with an untrusted
553 application.
554 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
555 from the output buffer. This fixes a potential policy bypass or decryption
556 oracle vulnerability if the output buffer is in memory that is shared with
557 an untrusted application.
558 * Fix a double-free that happened after mbedtls_ssl_set_session() or
559 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
560 (out of memory). After that, calling mbedtls_ssl_session_free()
561 and mbedtls_ssl_free() would cause an internal session buffer to
562 be free()'d twice.
563
564Bugfix
565 * Stop using reserved identifiers as local variables. Fixes #4630.
566 * The GNU makefiles invoke python3 in preference to python except on Windows.
567 The check was accidentally not performed when cross-compiling for Windows
568 on Linux. Fix this. Fixes #4774.
569 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
570 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
571 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
572 * Don't use the obsolete header path sys/fcntl.h in unit tests.
573 These header files cause compilation errors in musl.
574 Fixes #4969.
575 * Fix missing constraints on x86_64 and aarch64 assembly code
576 for bignum multiplication that broke some bignum operations with
577 (at least) Clang 12.
578 Fixes #4116, #4786, #4917, #4962.
579 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
580 * Failures of alternative implementations of AES or DES single-block
581 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
582 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
583 This does not concern the implementation provided with Mbed TLS,
584 where this function cannot fail, or full-module replacements with
585 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
586 * Some failures of HMAC operations were ignored. These failures could only
587 happen with an alternative implementation of the underlying hash module.
588 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
589 * Fix compile-time or run-time errors in PSA
590 AEAD functions when ChachaPoly is disabled. Fixes #5065.
591 * Remove PSA'a AEAD finish/verify output buffer limitation for GCM.
592 The requirement of minimum 15 bytes for output buffer in
593 psa_aead_finish() and psa_aead_verify() does not apply to the built-in
594 implementation of GCM.
595 * Move GCM's update output buffer length verification from PSA AEAD to
596 the built-in implementation of the GCM.
597 The requirement for output buffer size to be equal or greater then
598 input buffer size is valid only for the built-in implementation of GCM.
599 Alternative GCM implementations can process whole blocks only.
600 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
601 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
602 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
603 This algorithm now accepts only the same salt length for verification
604 that it produces when signing, as documented. Use the new algorithm
605 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
606 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
607 for algorithm values that fully encode the hashing step, as per the PSA
608 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
609 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
610 all algorithms that can be used with psa_{sign,verify}_hash(), including
611 these two.
612 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
613 not to list other shared libraries they need.
Ronald Cron1ffa6a52021-12-14 15:57:17 +0100614 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
615 exceeds 2^32. Fixes #4884.
Ronald Cron831cf482021-12-15 09:02:38 +0100616 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
617 version 11.
618 * Fix the build when no SHA2 module is included. Fixes #4930.
619 * Fix the build when only the bignum module is included. Fixes #4929.
620 * Fix a potential invalid pointer dereference and infinite loop bugs in
621 pkcs12 functions when the password is empty. Fix the documentation to
622 better describe the inputs to these functions and their possible values.
623 Fixes #5136.
624 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
625 operations psa_mac_compute() and psa_mac_sign_setup().
626 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
627 operations psa_mac_verify() and psa_mac_verify_setup().
628
629Changes
630 * Explicitly mark the fields mbedtls_ssl_session.exported and
631 mbedtls_ssl_config.respect_cli_pref as private. This was an
632 oversight during the run-up to the release of Mbed TLS 3.0.
633 The fields were never intended to be public.
634 * Implement multi-part CCM API.
635 The multi-part functions: mbedtls_ccm_starts(), mbedtls_ccm_set_lengths(),
636 mbedtls_ccm_update_ad(), mbedtls_ccm_update(), mbedtls_ccm_finish()
637 were introduced in mbedTLS 3.0 release, however their implementation was
638 postponed until now.
639 Implemented functions support chunked data input for both CCM and CCM*
640 algorithms.
641 * Remove MBEDTLS_SSL_EXPORT_KEYS, making it always on and increasing the
642 code size by about 80B on an M0 build. This option only gated an ability
643 to set a callback, but was deemed unnecessary as it was yet another define
644 to remember when writing tests, or test configurations. Fixes #4653.
645 * Improve the performance of base64 constant-flow code. The result is still
646 slower than the original non-constant-flow implementation, but much faster
647 than the previous constant-flow implementation. Fixes #4814.
648 * Ignore plaintext/ciphertext lengths for CCM*-no-tag operations.
649 For CCM* encryption/decryption without authentication, input
650 length will be ignored.
651 * Indicate in the error returned if the nonce length used with
652 ChaCha20-Poly1305 is invalid, and not just unsupported.
Ronald Cron1ffa6a52021-12-14 15:57:17 +0100653 * The mbedcrypto library includes a new source code module constant_time.c,
654 containing various functions meant to resist timing side channel attacks.
655 This module does not have a separate configuration option, and functions
656 from this module will be included in the build as required. Currently
657 most of the interface of this module is private and may change at any
658 time.
659 * The generated configuration-independent files are now automatically
660 generated by the CMake build system on Unix-like systems. This is not
661 yet supported when cross-compiling.
Ronald Cron831cf482021-12-15 09:02:38 +0100662
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100663= Mbed TLS 3.0.0 branch released 2021-07-07
Dave Rodgman10ba5532021-04-26 14:58:26 +0100664
665API changes
666 * Remove HAVEGE module.
667 The design of HAVEGE makes it unsuitable for microcontrollers. Platforms
668 with a more complex CPU usually have an operating system interface that
669 provides better randomness. Instead of HAVEGE, declare OS or hardware RNG
670 interfaces with mbedtls_entropy_add_source() and/or use an entropy seed
671 file created securely during device provisioning. See
Dave Rodgmanb3196842022-10-12 16:47:08 +0100672 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/add-entropy-sources-to-entropy-pool/ for
Dave Rodgman10ba5532021-04-26 14:58:26 +0100673 more information.
674 * Add missing const attributes to API functions.
675 * Remove helpers for the transition from Mbed TLS 1.3 to Mbed TLS 2.0: the
676 header compat-1.3.h and the script rename.pl.
677 * Remove certs module from the API.
678 Transfer keys and certificates embedded in the library to the test
679 component. This contributes to minimizing library API and discourages
680 users from using unsafe keys in production.
681 * Move alt helpers and definitions.
682 Various helpers and definitions available for use in alt implementations
683 have been moved out of the include/ directory and into the library/
684 directory. The files concerned are ecp_internal.h and rsa_internal.h
Gilles Peskine6a2fb612021-05-24 22:25:04 +0200685 which have also been renamed to ecp_internal_alt.h and rsa_alt_helpers.h
Dave Rodgman10ba5532021-04-26 14:58:26 +0100686 respectively.
687 * Move internal headers.
688 Header files that were only meant for the library's internal use and
689 were not meant to be used in application code have been moved out of
690 the include/ directory. The headers concerned are bn_mul.h, aesni.h,
691 padlock.h, entropy_poll.h and *_internal.h.
692 * Drop support for parsing SSLv2 ClientHello
693 (MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO).
694 * Drop support for SSLv3 (MBEDTLS_SSL_PROTO_SSL3).
Dave Rodgman10ba5532021-04-26 14:58:26 +0100695 * Drop support for TLS record-level compression (MBEDTLS_ZLIB_SUPPORT).
696 * Drop support for RC4 TLS ciphersuites.
697 * Drop support for single-DES ciphersuites.
698 * Drop support for MBEDTLS_SSL_HW_RECORD_ACCEL.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100699 * Update AEAD output size macros to bring them in line with the PSA Crypto
700 API version 1.0 spec. This version of the spec parameterizes them on the
701 key type used, as well as the key bit-size in the case of
702 PSA_AEAD_TAG_LENGTH.
703 * Add configuration option MBEDTLS_X509_REMOVE_INFO which
704 removes the mbedtls_x509_*_info(), mbedtls_debug_print_crt()
705 as well as other functions and constants only used by
706 those functions. This reduces the code footprint by
707 several kB.
708 * Remove SSL error codes `MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED`
709 and `MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH` which are never
710 returned from the public SSL API.
711 * Remove `MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE` and return
712 `MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL` instead.
Dave Rodgman814b0992021-07-02 12:11:14 +0100713 * The output parameter of mbedtls_sha512_finish, mbedtls_sha512,
714 mbedtls_sha256_finish and mbedtls_sha256 now has a pointer type
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100715 rather than array type. This removes spurious warnings in some compilers
716 when outputting a SHA-384 or SHA-224 hash into a buffer of exactly
717 the hash size.
718 * Remove the MBEDTLS_TEST_NULL_ENTROPY config option. Fixes #4388.
719 * The interface of the GCM module has changed to remove restrictions on
720 how the input to multipart operations is broken down. mbedtls_gcm_finish()
Dave Rodgmaneaef0b72021-07-01 16:59:13 +0100721 now takes extra output parameters for the last partial output block.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100722 mbedtls_gcm_update() now takes extra parameters for the output length.
723 The software implementation always produces the full output at each
724 call to mbedtls_gcm_update(), but alternative implementations activated
725 by MBEDTLS_GCM_ALT may delay partial blocks to the next call to
726 mbedtls_gcm_update() or mbedtls_gcm_finish(). Furthermore, applications
727 no longer pass the associated data to mbedtls_gcm_starts(), but to the
728 new function mbedtls_gcm_update_ad().
729 These changes are backward compatible for users of the cipher API.
730 * Replace MBEDTLS_SHA512_NO_SHA384 config option with MBEDTLS_SHA384_C.
731 This separates config option enabling the SHA384 algorithm from option
732 enabling the SHA512 algorithm. Fixes #4034.
733 * Introduce MBEDTLS_SHA224_C.
734 This separates config option enabling the SHA224 algorithm from option
735 enabling SHA256.
Dave Rodgman745e3582021-07-05 18:53:31 +0100736 * The getter and setter API of the SSL session cache (used for
737 session-ID based session resumption) has changed to that of
738 a key-value store with keys being session IDs and values
739 being opaque instances of `mbedtls_ssl_session`.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100740 * Remove the mode parameter from RSA operation functions. Signature and
741 decryption functions now always use the private key and verification and
742 encryption use the public key. Verification functions also no longer have
743 RNG parameters.
Dave Rodgman745e3582021-07-05 18:53:31 +0100744 * Modify semantics of `mbedtls_ssl_conf_[opaque_]psk()`:
745 In Mbed TLS 2.X, the API prescribes that later calls overwrite
746 the effect of earlier calls. In Mbed TLS 3.0, calling
747 `mbedtls_ssl_conf_[opaque_]psk()` more than once will fail,
748 leaving the PSK that was configured first intact.
749 Support for more than one PSK may be added in 3.X.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100750 * The function mbedtls_x509write_csr_set_extension() has an extra parameter
751 which allows to mark an extension as critical. Fixes #4055.
752 * For multi-part AEAD operations with the cipher module, calling
753 mbedtls_cipher_finish() is now mandatory. Previously the documentation
754 was unclear on this point, and this function happened to never do
755 anything with the currently implemented AEADs, so in practice it was
756 possible to skip calling it, which is no longer supported.
757 * The option MBEDTLS_ECP_FIXED_POINT_OPTIM use pre-computed comb tables
758 instead of computing tables in runtime. Thus, this option now increase
759 code size, and it does not increase RAM usage in runtime anymore.
760 * Remove the SSL APIs mbedtls_ssl_get_input_max_frag_len() and
761 mbedtls_ssl_get_output_max_frag_len(), and add a new API
762 mbedtls_ssl_get_max_in_record_payload(), complementing the existing
763 mbedtls_ssl_get_max_out_record_payload().
764 Uses of mbedtls_ssl_get_input_max_frag_len() and
765 mbedtls_ssl_get_input_max_frag_len() should be replaced by
766 mbedtls_ssl_get_max_in_record_payload() and
767 mbedtls_ssl_get_max_out_record_payload(), respectively.
768 * mbedtls_rsa_init() now always selects the PKCS#1v1.5 encoding for an RSA
769 key. To use an RSA key with PSS or OAEP, call mbedtls_rsa_set_padding()
770 after initializing the context. mbedtls_rsa_set_padding() now returns an
771 error if its parameters are invalid.
Dave Rodgman745e3582021-07-05 18:53:31 +0100772 * Replace MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE by a runtime
773 configuration function mbedtls_ssl_conf_preference_order(). Fixes #4398.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100774 * Instead of accessing the len field of a DHM context, which is no longer
775 supported, use the new function mbedtls_dhm_get_len() .
776 * In modules that implement cryptographic hash functions, many functions
777 mbedtls_xxx() now return int instead of void, and the corresponding
778 function mbedtls_xxx_ret() which was identical except for returning int
779 has been removed. This also concerns mbedtls_xxx_drbg_update(). See the
780 migration guide for more information. Fixes #4212.
781 * For all functions that take a random number generator (RNG) as a
782 parameter, this parameter is now mandatory (that is, NULL is not an
783 acceptable value). Functions which previously accepted NULL and now
784 reject it are: the X.509 CRT and CSR writing functions; the PK and RSA
785 sign and decrypt function; mbedtls_rsa_private(); the functions
786 in DHM and ECDH that compute the shared secret; the scalar multiplication
787 functions in ECP.
788 * The following functions now require an RNG parameter:
789 mbedtls_ecp_check_pub_priv(), mbedtls_pk_check_pair(),
790 mbedtls_pk_parse_key(), mbedtls_pk_parse_keyfile().
791 * mbedtls_ssl_conf_export_keys_ext_cb() and
792 mbedtls_ssl_conf_export_keys_cb() have been removed and
793 replaced by a new API mbedtls_ssl_set_export_keys_cb().
794 Raw keys and IVs are no longer passed to the callback.
795 Further, callbacks now receive an additional parameter
796 indicating the type of secret that's being exported,
797 paving the way for the larger number of secrets
798 in TLS 1.3. Finally, the key export callback and
799 context are now connection-specific.
800 * Signature functions in the RSA and PK modules now require the hash
801 length parameter to be the size of the hash input. For RSA signatures
802 other than raw PKCS#1 v1.5, this must match the output size of the
803 specified hash algorithm.
804 * The functions mbedtls_pk_sign(), mbedtls_pk_sign_restartable(),
805 mbedtls_ecdsa_write_signature() and
806 mbedtls_ecdsa_write_signature_restartable() now take an extra parameter
807 indicating the size of the output buffer for the signature.
808 * Implement one-shot cipher functions, psa_cipher_encrypt and
809 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
810 specification.
811 * Direct access to fields of structures declared in public headers is no
812 longer supported except for fields that are documented public. Use accessor
813 functions instead. For more information, see the migration guide entry
814 "Most structure fields are now private".
Dave Rodgman9bd03892021-07-01 16:59:49 +0100815 * mbedtls_ssl_get_session_pointer() has been removed, and
816 mbedtls_ssl_{set,get}_session() may now only be called once for any given
817 SSL context.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100818
819Default behavior changes
820 * Enable by default the functionalities which have no reason to be disabled.
821 They are: ARIA block cipher, CMAC mode, elliptic curve J-PAKE library and
822 Key Wrapping mode as defined in NIST SP 800-38F. Fixes #4036.
823 * Some default policies for X.509 certificate verification and TLS have
824 changed: curves and hashes weaker than 255 bits are no longer accepted
825 by default. The default order in TLS now favors faster curves over larger
826 curves.
Dave Rodgman10ba5532021-04-26 14:58:26 +0100827
828Requirement changes
829 * The library now uses the %zu format specifier with the printf() family of
830 functions, so requires a toolchain that supports it. This change does not
831 affect the maintained LTS branches, so when contributing changes please
832 bear this in mind and do not add them to backported code.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100833 * If you build the development version of Mbed TLS, rather than an official
834 release, some configuration-independent files are now generated at build
835 time rather than checked into source control. This includes some library
836 source files as well as the Visual Studio solution. Perl, Python 3 and a
837 C compiler for the host platform are required. See “Generated source files
838 in the development branch” in README.md for more information.
839 * Refresh the minimum supported versions of tools to build the
840 library. CMake versions older than 3.10.2 and Python older
841 than 3.6 are no longer supported.
Dave Rodgman10ba5532021-04-26 14:58:26 +0100842
843Removals
844 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
845 compile-time option, which was off by default. Users should not trust
846 certificates signed with SHA-1 due to the known attacks against SHA-1.
Manuel Pégourié-Gonnard143b1e32021-05-05 09:46:01 +0200847 If needed, SHA-1 certificates can still be verified by using a custom
Manuel Pégourié-Gonnarde7563062021-04-26 10:08:29 +0200848 verification profile.
Dave Rodgman10ba5532021-04-26 14:58:26 +0100849 * Removed deprecated things in psa/crypto_compat.h. Fixes #4284
850 * Removed deprecated functions from hashing modules. Fixes #4280.
851 * Remove PKCS#11 library wrapper. PKCS#11 has limited functionality,
852 lacks automated tests and has scarce documentation. Also, PSA Crypto
853 provides a more flexible private key management.
854 More details on PCKS#11 wrapper removal can be found in the mailing list
855 https://lists.trustedfirmware.org/pipermail/mbed-tls/2020-April/000024.html
856 * Remove deprecated error codes. Fix #4283
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100857 * Remove MBEDTLS_ENABLE_WEAK_CIPHERSUITES configuration option. Fixes #4416.
858 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
859 compile-time option. This option has been inactive for a long time.
860 Please use the `lifetime` parameter of `mbedtls_ssl_ticket_setup()`
861 instead.
862 * Remove the following deprecated functions and constants of hex-encoded
863 primes based on RFC 5114 and RFC 3526 from library code and tests:
864 mbedtls_aes_encrypt(), mbedtls_aes_decrypt(), mbedtls_mpi_is_prime(),
865 mbedtls_cipher_auth_encrypt(), mbedtls_cipher_auth_decrypt(),
866 mbedtls_ctr_drbg_update(), mbedtls_hmac_drbg_update(),
867 mbedtls_ecdsa_write_signature_det(), mbedtls_ecdsa_sign_det(),
868 mbedtls_ssl_conf_dh_param(), mbedtls_ssl_get_max_frag_len(),
869 MBEDTLS_DHM_RFC5114_MODP_2048_P, MBEDTLS_DHM_RFC5114_MODP_2048_G,
870 MBEDTLS_DHM_RFC3526_MODP_2048_P, MBEDTLS_DHM_RFC3526_MODP_2048_G,
871 MBEDTLS_DHM_RFC3526_MODP_3072_P, MBEDTLS_DHM_RFC3526_MODP_3072_G,
872 MBEDTLS_DHM_RFC3526_MODP_4096_P, MBEDTLS_DHM_RFC3526_MODP_4096_G.
873 Remove the deprecated file: include/mbedtls/net.h. Fixes #4282.
874 * Remove MBEDTLS_SSL_MAX_CONTENT_LEN configuration option, since
875 MBEDTLS_SSL_IN_CONTENT_LEN and MBEDTLS_SSL_OUT_CONTENT_LEN replace
876 it. Fixes #4362.
877 * Remove the MBEDTLS_SSL_RECORD_CHECKING option and enable by default its
878 previous action. Fixes #4361.
879 * Remove support for TLS 1.0, TLS 1.1 and DTLS 1.0, as well as support for
880 CBC record splitting, fallback SCSV, and the ability to configure
881 ciphersuites per version, which are no longer relevant. This removes the
882 configuration options MBEDTLS_SSL_PROTO_TLS1,
883 MBEDTLS_SSL_PROTO_TLS1_1, MBEDTLS_SSL_CBC_RECORD_SPLITTING and
884 MBEDTLS_SSL_FALLBACK_SCSV as well as the functions
885 mbedtls_ssl_conf_cbc_record_splitting(),
886 mbedtls_ssl_get_key_exchange_md_ssl_tls(), mbedtls_ssl_conf_fallback(),
887 and mbedtls_ssl_conf_ciphersuites_for_version(). Fixes #4286.
888 * The RSA module no longer supports private-key operations with the public
889 key and vice versa.
890 * Remove the MBEDTLS_SSL_DTLS_BADMAC_LIMIT config.h option. Fixes #4403.
891 * Remove all the 3DES ciphersuites:
892 MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
893 MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
894 MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
895 MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
896 MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
897 MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
898 MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA,
899 MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
900 MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA. Remove the
901 MBEDTLS_REMOVE_3DES_CIPHERSUITES option which is no longer relevant.
902 Fixes #4367.
903 * Remove the MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 option and let the code
904 behave as if it was always disabled. Fixes #4386.
905 * Remove MBEDTLS_ECDH_LEGACY_CONTEXT config option since this was purely for
906 backward compatibility which is no longer supported. Addresses #4404.
907 * Remove the following macros: MBEDTLS_CHECK_PARAMS,
908 MBEDTLS_CHECK_PARAMS_ASSERT, MBEDTLS_PARAM_FAILED,
909 MBEDTLS_PARAM_FAILED_ALT. Fixes #4313.
910 * Remove the MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION config.h
911 option. The mbedtls_x509_crt_parse_der_with_ext_cb() is the way to go for
912 migration path. Fixes #4378.
Dave Rodgman745e3582021-07-05 18:53:31 +0100913 * Remove the MBEDTLS_X509_CHECK_KEY_USAGE and
914 MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE config.h options and let the code
915 behave as if they were always enabled. Fixes #4405.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100916 * MBEDTLS_ECP_MAX_BITS is no longer a configuration option because it is
917 now determined automatically based on supported curves.
Dave Rodgman745e3582021-07-05 18:53:31 +0100918 * Remove the following functions: mbedtls_timing_self_test(),
919 mbedtls_hardclock_poll(), mbedtls_timing_hardclock() and
920 mbedtls_set_alarm(). Fixes #4083.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100921 * The configuration option MBEDTLS_ECP_NO_INTERNAL_RNG has been removed as
922 it no longer had any effect.
Dave Rodgman745e3582021-07-05 18:53:31 +0100923 * Remove all support for MD2, MD4, RC4, Blowfish and XTEA. This removes the
924 corresponding modules and all their APIs and related configuration
925 options. Fixes #4084.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100926 * Remove MBEDTLS_SSL_TRUNCATED_HMAC and also remove
927 MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT config option. Users are better served by
928 using a CCM-8 ciphersuite than a CBC ciphersuite with truncated HMAC.
929 See issue #4341 for more details.
930 * Remove the compile-time option
931 MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE.
Dave Rodgman10ba5532021-04-26 14:58:26 +0100932
933Features
934 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
935 signature with a specific salt length. This function allows to validate
936 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
937 Meuter in PR #3183.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100938 * Added support for built-in driver keys through the PSA opaque crypto
939 driver interface. Refer to the documentation of
940 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
941 * Implement psa_sign_message() and psa_verify_message().
942 * The multi-part GCM interface (mbedtls_gcm_update() or
943 mbedtls_cipher_update()) no longer requires the size of partial inputs to
944 be a multiple of 16.
945 * The multi-part GCM interface now supports chunked associated data through
946 multiple calls to mbedtls_gcm_update_ad().
947 * The new function mbedtls_mpi_random() generates a random value in a
948 given range uniformly.
949 * Alternative implementations of the AES, DHM, ECJPAKE, ECP, RSA and timing
950 modules had undocumented constraints on their context types. These
951 constraints have been relaxed.
952 See docs/architecture/alternative-implementations.md for the remaining
953 constraints.
954 * The new functions mbedtls_dhm_get_len() and mbedtls_dhm_get_bitlen()
955 query the size of the modulus in a Diffie-Hellman context.
956 * The new function mbedtls_dhm_get_value() copy a field out of a
957 Diffie-Hellman context.
958 * Use the new function mbedtls_ecjpake_set_point_format() to select the
959 point format for ECJPAKE instead of accessing the point_format field
960 directly, which is no longer supported.
961 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
962 PSA Cryptograpy API 1.0.0 specification.
963
964Security
Dave Rodgman5b13f602021-07-05 18:09:16 +0100965 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
966 private keys and of blinding values for DHM and elliptic curves (ECP)
967 computations. Reported by FlorianF89 in #4245.
968 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
969 An adversary who is capable of very precise timing measurements could
970 learn partial information about the leading bits of the nonce used for the
971 signature, allowing the recovery of the private key after observing a
972 large number of signature operations. This completes a partial fix in
973 Mbed TLS 2.20.0.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +0100974 * An adversary with access to precise enough information about memory
975 accesses (typically, an untrusted operating system attacking a secure
976 enclave) could recover an RSA private key after observing the victim
977 performing a single private-key operation. Found and reported by
978 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
979 * An adversary with access to precise enough timing information (typically, a
980 co-located process) could recover a Curve25519 or Curve448 static ECDH key
981 after inputting a chosen public key and observing the victim performing the
982 corresponding private-key operation. Found and reported by Leila Batina,
983 Lukas Chmielewski, Björn Haase, Niels Samwel and Peter Schwabe.
Dave Rodgman10ba5532021-04-26 14:58:26 +0100984
985Bugfix
986 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
987 lead to the seed file corruption in case if the path to the seed file is
988 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
989 Krasnoshchok in #3616.
990 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
991 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
992 to create is not valid, bringing them in line with version 1.0.0 of the
993 specification. Fix #4271.
994 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
995 get printf format specifier warnings.
996 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
997 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
998 in line with version 1.0.0 of the specification. Fix #4162.
999 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
1000 zero. Fixes #1792
Gilles Peskinef4998b02021-06-10 15:51:54 +02001001 * Fix some cases in the bignum module where the library constructed an
1002 unintended representation of the value 0 which was not processed
1003 correctly by some bignum operations. This could happen when
1004 mbedtls_mpi_read_string() was called on "-0", or when
1005 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
1006 the arguments being negative and the other being 0. Fixes #4643.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001007 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
1008 defined. Fixes #4217.
1009 * Fix an incorrect error code when parsing a PKCS#8 private key.
1010 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
1011 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
1012 minimum size was rounded down to the nearest multiple of 8.
1013 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
1014 defined to specific values. If the code is used in a context
1015 where these are already defined, this can result in a compilation
1016 error. Instead, assume that if they are defined, the values will
1017 be adequate to build Mbed TLS.
1018 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
1019 nonetheless, resulting in undefined reference errors when building a
1020 shared library. Reported by Guillermo Garcia M. in #4411.
1021 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
1022 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
1023 was disabled. Fix the dependency. Fixes #4472.
1024 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
1025 * Fix test suite code on platforms where int32_t is not int, such as
1026 Arm Cortex-M. Fixes #4530.
1027 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
1028 directive in a header and a missing initialization in the self-test.
1029 * Fix a missing initialization in the Camellia self-test, affecting
1030 MBEDTLS_CAMELLIA_ALT implementations.
1031 * Restore the ability to configure PSA via Mbed TLS options to support RSA
1032 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
1033 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
1034 Fixes #4512.
1035 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
1036 (when the encrypt-then-MAC extension is not in use) with some ALT
1037 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
1038 the affected side to wrongly reject valid messages. Fixes #4118.
1039 * Remove outdated check-config.h check that prevented implementing the
1040 timing module on Mbed OS. Fixes #4633.
1041 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
1042 about missing inputs.
1043 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
1044 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
1045 * Fix a resource leak in a test suite with an alternative AES
1046 implementation. Fixes #4176.
1047 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
1048 could notably be triggered by setting the TLS debug level to 3 or above
1049 and using a Montgomery curve for the key exchange. Reported by lhuang04
1050 in #4578. Fixes #4608.
1051 * psa_verify_hash() was relying on implementation-specific behavior of
1052 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
1053 implementations. This reliance is now removed. Fixes #3990.
1054 * Disallow inputs of length different from the corresponding hash when
1055 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
1056 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
1057 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
1058 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
1059 could not be triggered by code that constructed A with one of the
1060 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
1061 those always built an mpi object with at least one limb.
1062 Credit to OSS-Fuzz. Fixes #4641.
1063 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
1064 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
1065 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
1066 * The PSA API no longer allows the creation or destruction of keys with a
1067 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
1068 can now only be used as intended, for keys that cannot be modified through
1069 normal use of the API.
1070 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
1071 in all the right places. Include it from crypto_platform.h, which is
1072 the natural place. Fixes #4649.
1073 * Fix which alert is sent in some cases to conform to the
1074 applicable RFC: on an invalid Finished message value, an
1075 invalid max_fragment_length extension, or an
1076 unsupported extension used by the server.
Dave Rodgmana84a8eb2021-07-01 17:01:04 +01001077 * Correct (change from 12 to 13 bytes) the value of the macro describing the
1078 maximum nonce length returned by psa_aead_generate_nonce().
Dave Rodgman10ba5532021-04-26 14:58:26 +01001079
1080Changes
1081 * Fix the setting of the read timeout in the DTLS sample programs.
1082 * Add extra printf compiler warning flags to builds.
1083 * Fix memsan build false positive in x509_crt.c with clang 11
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001084 * Alternative implementations of CMAC may now opt to not support 3DES as a
1085 CMAC block cipher, and still pass the CMAC self test.
1086 * Remove the AES sample application programs/aes/aescrypt2 which shows
1087 bad cryptographic practice. Fix #1906.
1088 * Remove configs/config-psa-crypto.h, which no longer had any intended
1089 differences from the default configuration, but had accidentally diverged.
1090 * When building the test suites with GNU make, invoke python3 or python, not
1091 python2, which is no longer supported upstream.
1092 * fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
1093 When that flag is on, standard GNU C printf format specifiers
1094 should be used.
1095 * Replace MBEDTLS_SSL_CID_PADDING_GRANULARITY and
1096 MBEDTLS_SSL_TLS1_3_PADDING_GRANULARITY with a new single unified option
1097 MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY. Fixes #4335.
1098 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
1099 during ECC operations at a negligible performance cost.
1100 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
1101 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
1102 when their input has length 0. Note that this is an implementation detail
1103 and can change at any time, so this change should be transparent, but it
1104 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
1105 now writing an empty string where it previously wrote one or more
1106 zero digits when operating from values constructed with an mpi_read
1107 function and some mpi operations.
1108 * Add CMake package config generation for CMake projects consuming Mbed TLS.
1109 * config.h has been split into build_info.h and mbedtls_config.h
1110 build_info.h is intended to be included from C code directly, while
1111 mbedtls_config.h is intended to be edited by end users wishing to
1112 change the build configuration, and should generally only be included from
1113 build_info.h.
1114 * The handling of MBEDTLS_CONFIG_FILE has been moved into build_info.h.
1115 * A config file version symbol, MBEDTLS_CONFIG_VERSION was introduced.
1116 Defining it to a particular value will ensure that Mbed TLS interprets
1117 the config file in a way that's compatible with the config file format
1118 used by the Mbed TLS release whose MBEDTLS_VERSION_NUMBER has the same
1119 value.
1120 The only value supported by Mbed TLS 3.0.0 is 0x03000000.
1121 * Various changes to which alert and/or error code may be returned
1122 * during the TLS handshake.
1123 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
1124 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
1125 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
1126 is also applied when loading a key from storage.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001127
Dave Rodgman74755e42021-03-08 18:35:44 +00001128= mbed TLS 2.26.0 branch released 2021-03-08
1129
1130API changes
1131 * Renamed the PSA Crypto API output buffer size macros to bring them in line
1132 with version 1.0.0 of the specification.
1133 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
1134 in bits rather than bytes, with an additional flag to indicate if the
1135 size may have been rounded up to a whole number of bytes.
1136 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
1137 with version 1.0.0 of the specification.
1138
1139Default behavior changes
1140 * In mbedtls_rsa_context objects, the ver field was formerly documented
1141 as always 0. It is now reserved for internal purposes and may take
1142 different values.
1143
1144New deprecations
1145 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
1146 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
1147 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
1148 deprecated.
1149 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
1150 have been renamed, and the old names deprecated.
1151
1152Features
1153 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
1154 CTR_DRBG is used by default if it is available, but you can override
1155 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
1156 Fix #3354.
1157 * Automatic fallback to a software implementation of ECP when
1158 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
1159 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
1160 * The PSA crypto subsystem can now be configured to use less static RAM by
1161 tweaking the setting for the maximum amount of keys simultaneously in RAM.
1162 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
1163 can exist simultaneously. It has a sensible default if not overridden.
1164 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
1165 now use an external random generator instead of the library's own
1166 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
1167 and see the documentation of mbedtls_psa_external_get_random() for details.
1168 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
1169 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
1170 random generator with mbedtls_xxx functions. See the documentation of
1171 mbedtls_psa_get_random() for details.
1172 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
1173 minimum MAC or tag length thanks to the new wildcards
1174 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
1175 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
1176
1177Security
1178 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
1179 nonce from entropy. Applications were affected if they called
1180 mbedtls_ctr_drbg_set_nonce_len(), if they called
1181 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
1182 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
1183 In such cases, a random nonce was necessary to achieve the advertised
1184 security strength, but the code incorrectly used a constant instead of
1185 entropy from the nonce.
1186 Found by John Stroebel in #3819 and fixed in #3973.
1187 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
1188 |A| - |B| where |B| is larger than |A| and has more limbs (so the
1189 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
1190 applications calling mbedtls_mpi_sub_abs() directly are affected:
1191 all calls inside the library were safe since this function is
1192 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
1193 * Fix an errorneous estimation for an internal buffer in
1194 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
1195 value the function might fail to write a private RSA keys of the largest
1196 supported size.
1197 Found by Daniel Otte, reported in #4093 and fixed in #4094.
1198 * Fix a stack buffer overflow with mbedtls_net_poll() and
1199 mbedtls_net_recv_timeout() when given a file descriptor that is
1200 beyond FD_SETSIZE. Reported by FigBug in #4169.
1201 * Guard against strong local side channel attack against base64 tables by
1202 making access aceess to them use constant flow code.
1203
1204Bugfix
1205 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
1206 * Fix memory leak that occured when calling psa_close_key() on a
1207 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
1208 * Fix an incorrect error code if an RSA private operation glitched.
1209 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
1210 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
1211 is enabled, on platforms where initializing a mutex allocates resources.
1212 This was a regression introduced in the previous release. Reported in
1213 #4017, #4045 and #4071.
1214 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
1215 twice is safe. This happens for RSA when some Mbed TLS library functions
1216 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
1217 enabled on platforms where freeing a mutex twice is not safe.
1218 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
1219 when MBEDTLS_THREADING_C is enabled on platforms where initializing
1220 a mutex allocates resources.
1221 * Fixes a bug where, if the library was configured to include support for
1222 both the old SE interface and the new PSA driver interface, external keys were
1223 not loaded from storage. This was fixed by #3996.
1224 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
1225 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
1226 include this extension in all CA certificates that contain public keys
1227 used to validate digital signatures on certificates and MUST mark the
1228 extension as critical in such certificates." Previous to this change,
1229 the extension was always marked as non-critical. This was fixed by
1230 #3698.
1231
1232Changes
1233 * A new library C file psa_crypto_client.c has been created to contain
1234 the PSA code needed by a PSA crypto client when the PSA crypto
1235 implementation is not included into the library.
1236 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
1237 now uses the getrandom syscall instead of reading from /dev/urandom.
1238
Janos Follath56b38c22020-12-09 01:34:21 +00001239= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +00001240
1241API changes
1242 * The numerical values of the PSA Crypto API macros have been updated to
1243 conform to version 1.0.0 of the specification.
1244 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
1245 The underlying stream cipher is determined by the key type
1246 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
1247 * The functions mbedtls_cipher_auth_encrypt() and
1248 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
1249 as they have no way to check if the output buffer is large enough.
1250 Please use mbedtls_cipher_auth_encrypt_ext() and
1251 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
1252 Cryptofuzz. Fixes #3665.
1253
1254Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +00001255 * Update the minimum required CMake version to 2.8.12. This silences a
1256 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +00001257
1258New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +01001259 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +00001260 Use PSA_ALG_STREAM_CIPHER instead.
1261 * The functions mbedtls_cipher_auth_encrypt() and
1262 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
1263 functions mbedtls_cipher_auth_encrypt_ext() and
1264 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
1265 these new functions always append the tag to the ciphertext, and include
1266 the tag in the ciphertext length.
1267
1268Features
Janos Follathd6ce1162020-12-09 16:32:01 +00001269 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
1270 ciphers, asymmetric signing/verification and key generation, validate_key
1271 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +00001272 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +00001273 * In PSA, allow using a key declared with a base key agreement algorithm
1274 in combined key agreement and derivation operations, as long as the key
1275 agreement algorithm in use matches the algorithm the key was declared with.
1276 This is currently non-standard behaviour, but expected to make it into a
1277 future revision of the PSA Crypto standard.
1278 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
1279 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
1280 external CMake projects that include this one to avoid CMake target name
1281 clashes. The default value of this variable is "", so default target names
1282 are unchanged.
1283 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
1284 Pascal, improved by Ron Eldor.
1285 * In the PSA API, it is no longer necessary to open persistent keys:
1286 operations now accept the key identifier. The type psa_key_handle_t is now
1287 identical to psa_key_id_t instead of being platform-defined. This bridges
1288 the last major gap to compliance with the PSA Cryptography specification
1289 version 1.0.0. Opening persistent keys is still supported for backward
1290 compatibility, but will be deprecated and later removed in future
1291 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +00001292 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
1293 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
1294 1.0.0 of the PSA Crypto API specification.
1295
1296Security
1297 * The functions mbedtls_cipher_auth_encrypt() and
1298 mbedtls_cipher_auth_decrypt() would write past the minimum documented
1299 size of the output buffer when used with NIST_KW. As a result, code using
1300 those functions as documented with NIST_KW could have a buffer overwrite
1301 of up to 15 bytes, with consequences ranging up to arbitrary code
1302 execution depending on the location of the output buffer.
1303 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
1304 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
1305 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
1306 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
1307 which is how most uses of randomization in asymmetric cryptography
1308 (including key generation, intermediate value randomization and blinding)
1309 are implemented. This could cause failures or the silent use of non-random
1310 values. A random generator can fail if it needs reseeding and cannot not
1311 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
1312 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
1313 * Fix a compliance issue whereby we were not checking the tag on the
1314 algorithm parameters (only the size) when comparing the signature in the
1315 description part of the cert to the real signature. This meant that a
1316 NULL algorithm parameters entry would look identical to an array of REAL
1317 (size zero) to the library and thus the certificate would be considered
1318 valid. However, if the parameters do not match in *any* way then the
1319 certificate should be considered invalid, and indeed OpenSSL marks these
1320 certs as invalid when mbedtls did not.
1321 Many thanks to guidovranken who found this issue via differential fuzzing
1322 and reported it in #3629.
1323 * Zeroising of local buffers and variables which are used for calculations
1324 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
1325 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
1326 functions to erase sensitive data from memory. Reported by
1327 Johan Malmgren and Johan Uppman Bruce from Sectra.
1328
1329Bugfix
Janos Follath76027f62020-12-09 16:28:35 +00001330 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
1331 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +00001332 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
1333 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
1334 * Include the psa_constant_names generated source code in the source tree
1335 instead of generating it at build time. Fixes #3524.
1336 * Fix rsa_prepare_blinding() to retry when the blinding value is not
1337 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
1338 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
1339 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
1340 Fixes #3647.
1341 * Use socklen_t on Android and other POSIX-compliant system
1342 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
1343 Fix #3432.
1344 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
1345 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
1346 psa_cipher_* functions compliant with the PSA Crypto API specification.
1347 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
1348 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
1349 only the curves that support ECDSA, filter the list with
1350 mbedtls_ecdsa_can_do().
1351 * Fix psa_generate_key() returning an error when asked to generate
1352 an ECC key pair on Curve25519 or secp244k1.
1353 * Fix psa_key_derivation_output_key() to allow the output of a combined key
1354 agreement and subsequent key derivation operation to be used as a key
1355 inside of the PSA Crypto core.
1356 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
1357 chars. Fixes a build failure on platforms where char is unsigned. Fixes
1358 #3794.
1359 * Fix an off-by-one error in the additional data length check for
1360 CCM, which allowed encryption with a non-standard length field.
1361 Fixes #3719.
1362 * Correct the default IV size for mbedtls_cipher_info_t structures using
1363 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
1364 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
1365 defined. Fix contributed in #3571.
1366 * Fix conditions for including string.h in error.c. Fixes #3866.
1367 * psa_set_key_id() now also sets the lifetime to persistent for keys located
1368 in a secure element.
1369 * Attempting to create a volatile key with a non-zero key identifier now
1370 fails. Previously the key identifier was just ignored when creating a
1371 volatile key.
1372 * Attempting to create or register a key with a key identifier in the vendor
1373 range now fails.
1374 * Fix build failures on GCC 11. Fixes #3782.
1375 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
1376 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
1377 (an error condition) and the second operand was aliased to the result.
1378 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
1379 could go undetected, resulting in an incorrect result.
1380 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
1381 Fixes #2927.
1382 * In PEM writing functions, fill the trailing part of the buffer with null
1383 bytes. This guarantees that the corresponding parsing function can read
1384 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
1385 until this property was inadvertently broken in Mbed TLS 2.19.0.
1386 Fixes #3682.
1387 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
1388 option on. In this configuration key management methods that are required
1389 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
1390 Fixes #3818. Reported by John Stroebel.
1391
1392Changes
1393 * Reduce stack usage significantly during sliding window exponentiation.
1394 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
1395 * The PSA persistent storage format is updated to always store the key bits
1396 attribute. No automatic upgrade path is provided. Previously stored keys
1397 must be erased, or manually upgraded based on the key storage format
1398 specification (docs/architecture/mbed-crypto-storage-specification.md).
1399 Fixes #3740.
1400 * Remove the zeroization of a pointer variable in AES rounds. It was valid
1401 but spurious and misleading since it looked like a mistaken attempt to
1402 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
1403 Leti, France.
1404
Janos Follath6012f0e2020-08-26 15:32:10 +01001405= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +01001406
1407API changes
Janos Follath6012f0e2020-08-26 15:32:10 +01001408 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
1409 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
1410 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +01001411 Rename associated macros as well:
1412 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
1413 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
1414 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
1415 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
1416
1417Default behavior changes
1418 * Stop storing persistent information about externally stored keys created
1419 through PSA Crypto with a volatile lifetime. Reported in #3288 and
1420 contributed by Steven Cooreman in #3382.
1421
1422Features
1423 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
1424 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
1425 * Support building on e2k (Elbrus) architecture: correctly enable
1426 -Wformat-signedness, and fix the code that causes signed-one-bit-field
1427 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
1428 <akemi_homura@kurisa.ch>.
1429
1430Security
1431 * Fix a vulnerability in the verification of X.509 certificates when
1432 matching the expected common name (the cn argument of
1433 mbedtls_x509_crt_verify()) with the actual certificate name: when the
1434 subjecAltName extension is present, the expected name was compared to any
1435 name in that extension regardless of its type. This means that an
1436 attacker could for example impersonate a 4-bytes or 16-byte domain by
1437 getting a certificate for the corresponding IPv4 or IPv6 (this would
1438 require the attacker to control that IP address, though). Similar attacks
1439 using other subjectAltName name types might be possible. Found and
1440 reported by kFYatek in #3498.
1441 * When checking X.509 CRLs, a certificate was only considered as revoked if
1442 its revocationDate was in the past according to the local clock if
1443 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
1444 certificates were never considered as revoked. On builds with
1445 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
1446 example, an untrusted OS attacking a secure enclave) could prevent
1447 revocation of certificates via CRLs. Fixed by no longer checking the
1448 revocationDate field, in accordance with RFC 5280. Reported by
1449 yuemonangong in #3340. Reported independently and fixed by
1450 Raoul Strackx and Jethro Beekman in #3433.
1451 * In (D)TLS record decryption, when using a CBC ciphersuites without the
1452 Encrypt-then-Mac extension, use constant code flow memory access patterns
1453 to extract and check the MAC. This is an improvement to the existing
1454 countermeasure against Lucky 13 attacks. The previous countermeasure was
1455 effective against network-based attackers, but less so against local
1456 attackers. The new countermeasure defends against local attackers, even
1457 if they have access to fine-grained measurements. In particular, this
1458 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
1459 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
1460 (University of Florida) and Dave Tian (Purdue University).
1461 * Fix side channel in RSA private key operations and static (finite-field)
1462 Diffie-Hellman. An adversary with precise enough timing and memory access
1463 information (typically an untrusted operating system attacking a secure
1464 enclave) could bypass an existing counter-measure (base blinding) and
1465 potentially fully recover the private key.
1466 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
1467 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
1468 for pinpointing the problematic code.
1469 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
1470 application data from memory. Reported in #689 by
1471 Johan Uppman Bruce of Sectra.
1472
1473Bugfix
1474 * Library files installed after a CMake build no longer have execute
1475 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +01001476 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
1477 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +01001478 Reported in #3451 and fix contributed in #3452 by okhowang.
1479 * Fix the endianness of Curve25519 keys imported/exported through the PSA
1480 APIs. psa_import_key and psa_export_key will now correctly expect/output
1481 Montgomery keys in little-endian as defined by RFC7748. Contributed by
1482 Steven Cooreman in #3425.
1483 * Fix build errors when the only enabled elliptic curves are Montgomery
1484 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
1485 also fixes missing declarations reported by Steven Cooreman in #1147.
1486 * Fix self-test failure when the only enabled short Weierstrass elliptic
1487 curve is secp192k1. Fixes #2017.
1488 * PSA key import will now correctly import a Curve25519/Curve448 public key
1489 instead of erroring out. Contributed by Steven Cooreman in #3492.
1490 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
1491 lower bits. Fix contributed in #3540.
1492 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
1493 conditions. Reported and fix suggested by Guido Vranken in #3486.
1494 * Fix bug in redirection of unit test outputs on platforms where stdout is
1495 defined as a macro. First reported in #2311 and fix contributed in #3528.
1496
1497Changes
1498 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
1499 in #3478 and fix contributed in #3479 by okhowang.
1500 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
1501 previously could lead to stack overflow on constrained devices.
1502 Contributed by Doru Gucea and Simon Leet in #3464.
1503 * Undefine the ASSERT macro before defining it locally, in case it is defined
1504 in a platform header. Contributed by Abdelatif Guettouche in #3557.
1505 * Update copyright notices to use Linux Foundation guidance. As a result,
1506 the copyright of contributors other than Arm is now acknowledged, and the
1507 years of publishing are no longer tracked in the source files. This also
1508 eliminates the need for the lines declaring the files to be part of
1509 MbedTLS. Fixes #3457.
1510 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
1511 example applications which allows to provide a password for the key file
1512 specified through the existing key_file argument. This allows the use of
1513 these applications with password-protected key files. Analogously but for
1514 ssl_server2 only, add the command line parameter key_pwd2 which allows to
1515 set a password for the key file provided through the existing key_file2
1516 argument.
1517
Janos Follath13cba682020-06-26 12:40:52 +01001518= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +01001519
1520Default behavior changes
1521 * In the experimental PSA secure element interface, change the encoding of
1522 key lifetimes to encode a persistence level and the location. Although C
1523 prototypes do not effectively change, code calling
1524 psa_register_se_driver() must be modified to pass the driver's location
1525 instead of the keys' lifetime. If the library is upgraded on an existing
1526 device, keys created with the old lifetime value will not be readable or
1527 removable through Mbed TLS after the upgrade.
1528
1529Features
1530 * New functions in the error module return constant strings for
1531 high- and low-level error codes, complementing mbedtls_strerror()
1532 which constructs a string for any error code, including compound
1533 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
1534 in #3176.
1535 * The new utility programs/ssl/ssl_context_info prints a human-readable
1536 dump of an SSL context saved with mbedtls_ssl_context_save().
1537 * Add support for midipix, a POSIX layer for Microsoft Windows.
1538 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
1539 parsing unsupported certificate extensions via user provided callback.
1540 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
1541 a solution to #3241.
1542 * Pass the "certificate policies" extension to the callback supplied to
1543 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
1544 policies (#3419).
1545 * Added support to entropy_poll for the kern.arandom syscall supported on
1546 some BSD systems. Contributed by Nia Alarie in #3423.
1547 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
1548
1549Security
1550 * Fix a side channel vulnerability in modular exponentiation that could
1551 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
1552 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
1553 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
1554 Strackx (Fortanix) in #3394.
1555 * Fix side channel in mbedtls_ecp_check_pub_priv() and
1556 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
1557 private key that didn't include the uncompressed public key), as well as
1558 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
1559 f_rng argument. An attacker with access to precise enough timing and
1560 memory access information (typically an untrusted operating system
1561 attacking a secure enclave) could fully recover the ECC private key.
1562 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
1563 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
1564 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
1565 macros). This would cause the original Lucky 13 attack to be possible in
1566 those configurations, allowing an active network attacker to recover
1567 plaintext after repeated timing measurements under some conditions.
1568 Reported and fix suggested by Luc Perneel in #3246.
1569
1570Bugfix
1571 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
1572 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
1573 the example programs. Reported in #1430 and fix contributed by irwir.
1574 * Fix undefined behavior in X.509 certificate parsing if the
1575 pathLenConstraint basic constraint value is equal to INT_MAX.
1576 The actual effect with almost every compiler is the intended
1577 behavior, so this is unlikely to be exploitable anywhere. #3192
1578 * Fix issue with a detected HW accelerated record error not being exposed
1579 due to shadowed variable. Contributed by Sander Visser in #3310.
1580 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
1581 NULL pointer argument. Contributed by Sander Visser in #3312.
1582 * Fix potential linker errors on dual world platforms by inlining
1583 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
1584 from psa_crypto.c. Fixes #3300.
1585 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
1586 #2855.
1587 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
1588 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
1589 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
1590 * Remove unused macros from MSVC projects. Reported in #3297 and fix
1591 submitted in #3333 by irwir.
1592 * Add additional bounds checks in ssl_write_client_hello() preventing
1593 output buffer overflow if the configuration declared a buffer that was
1594 too small.
1595 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
1596 fix submitted in #3421 by Nia Alarie.
1597 * Fix building library/net_sockets.c and the ssl_mail_client program on
1598 NetBSD. Contributed by Nia Alarie in #3422.
1599 * Fix false positive uninitialised variable reported by cpp-check.
1600 Contributed by Sander Visser in #3311.
1601 * Update iv and len context pointers manually when reallocating buffers
1602 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
1603 when receiving a connection with CID, when these fields were shifted
1604 in ssl_parse_record_header().
1605
1606Changes
1607 * Fix warnings about signedness issues in format strings. The build is now
1608 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
1609 in #3153.
1610 * Fix minor performance issue in operations on Curve25519 caused by using a
1611 suboptimal modular reduction in one place. Found and fix contributed by
1612 Aurelien Jarno in #3209.
1613 * Combine identical cases in switch statements in md.c. Contributed
1614 by irwir in #3208.
1615 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
1616 by irwir in #3150.
1617 * Unify the example programs termination to call mbedtls_exit() instead of
1618 using a return command. This has been done to enable customization of the
1619 behavior in bare metal environments.
1620 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
1621 Contributed by Koh M. Nakagawa in #3326.
1622 * Use FindPython3 when cmake version >= 3.15.0
1623 * Abort the ClientHello writing function as soon as some extension doesn't
1624 fit into the record buffer. Previously, such extensions were silently
1625 dropped. As a consequence, the TLS handshake now fails when the output
1626 buffer is not large enough to hold the ClientHello.
1627 * The unit tests now rely on header files in tests/include/test and source
1628 files in tests/src. When building with make or cmake, the files in
1629 tests/src are compiled and the resulting object linked into each test
1630 executable.
1631 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
1632 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
1633 coutermeasures. If side channels are not a concern, this dependency can
1634 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
1635 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
1636 Martinho. #3147
1637 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
1638 in #3182 and fix submitted by irwir. #3217
1639 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
1640
Janos Follath876e0252020-04-08 17:15:18 +01001641= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001642
1643New deprecations
1644 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
1645 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001646 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
1647 mbedtls_ssl_get_output_max_frag_len() and
1648 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
1649 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001650
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001651Security
1652 * Fix issue in DTLS handling of new associations with the same parameters
1653 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
1654 the server could cause it to drop established associations with
1655 legitimate clients, resulting in a Denial of Service. This could only
1656 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
1657 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01001658 * Fix side channel in ECC code that allowed an adversary with access to
1659 precise enough timing and memory access information (typically an
1660 untrusted operating system attacking a secure enclave) to fully recover
1661 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
1662 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02001663 * Fix a potentially remotely exploitable buffer overread in a
1664 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001665
Janos Follathee856862020-04-08 16:58:36 +01001666Features
1667 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
1668 resizes the I/O buffers before and after handshakes, reducing the memory
1669 consumption during application data transfer.
1670
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001671Bugfix
1672 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
1673 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03001674 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
1675 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01001676 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
1677 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001678
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001679Changes
1680 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
1681 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001682 * Split mbedtls_ssl_get_max_frag_len() into
1683 mbedtls_ssl_get_output_max_frag_len() and
1684 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
1685 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1686 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001687
Janos Follath138c2ea2020-02-19 14:32:24 +00001688= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00001689
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001690New deprecations
1691 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
1692 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00001693 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01001694 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
1695 library which allows TLS authentication to use keys stored in a
1696 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001697
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001698Security
1699 * Fix potential memory overread when performing an ECDSA signature
1700 operation. The overread only happens with cryptographically low
1701 probability (of the order of 2^-n where n is the bitsize of the curve)
1702 unless the RNG is broken, and could result in information disclosure or
1703 denial of service (application crash or extra resource consumption).
1704 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001705 * To avoid a side channel vulnerability when parsing an RSA private key,
1706 read all the CRT parameters from the DER structure rather than
1707 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
1708 Brumley. Reported and fix contributed by Jack Lloyd.
1709 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001710
1711Features
1712 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
1713 support without SHA-384.
1714
1715API changes
1716 * Change the encoding of key types and curves in the PSA API. The new
1717 values are aligned with the upcoming release of the PSA Crypto API
1718 specification version 1.0.0. The main change which may break some
1719 existing code is that elliptic curve key types no longer encode the
1720 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
1721 a curve family and the key size determines the exact curve (for example,
1722 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
1723
Jaeden Amero62236d72020-01-24 18:20:22 +00001724Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01001725 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01001726 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
1727 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01001728 * Fix some false-positive uninitialized variable warnings in X.509. Fix
1729 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001730 * Fix a possible error code mangling in psa_mac_verify_finish() when
1731 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00001732 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
1733 RSA keys that would later be rejected by functions expecting private
1734 keys. Found by Catena cyber using oss-fuzz (issue 20467).
1735 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
1736 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00001737
Jaeden Amerod56a2af2020-01-15 18:07:20 +00001738= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03001739
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001740Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001741 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001742 entropy function to obtain entropy for a nonce if the entropy size is less
1743 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001744 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001745 nonce length to 0.
1746
1747Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001748 * Enforce that mbedtls_entropy_func() gathers a total of
1749 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001750 default configuration, on a platform with a single entropy source, the
1751 entropy module formerly only grabbed 32 bytes, which is good enough for
1752 security if the source is genuinely strong, but less than the expected 64
1753 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01001754 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
1755 mbedtls_internal_aes_decrypt() before exiting the function. The value of
1756 these variables can be used to recover the last round key. To follow best
1757 practice and to limit the impact of buffer overread vulnerabilities (like
1758 Heartbleed) we need to zeroize them before exiting the function.
1759 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
1760 Grant Hernandez, and Kevin Butler (University of Florida) and
1761 Dave Tian (Purdue University).
1762 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
1763 constant time/constant trace, so side channel attacks can retrieve the
1764 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
1765 to have only large prime factors), and then, by brute force, recover the
1766 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
1767 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
1768 timings on the comparison in the key generation enabled the attacker to
1769 learn leading bits of the ephemeral key used during ECDSA signatures and to
1770 recover the private key. Reported by Jeremy Dubeuf.
1771 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
1772 failures could happen with alternative implementations of AES. Bug
1773 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
1774 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001775
1776Features
1777 * Key derivation inputs in the PSA API can now either come from a key object
1778 or from a buffer regardless of the step type.
1779 * The CTR_DRBG module can grab a nonce from the entropy source during the
1780 initial seeding. The default nonce length is chosen based on the key size
1781 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001782 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001783 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001784 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001785
1786API changes
1787 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
1788 key derivation function, use a buffer instead (this is now always
1789 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001790 * Rename psa_asymmetric_sign() to psa_sign_hash() and
1791 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001792
irwir6c0da642019-09-26 21:07:41 +03001793Bugfix
1794 * Fix an incorrect size in a debugging message. Reported and fix
1795 submitted by irwir. Fixes #2717.
1796 * Fix an unused variable warning when compiling without DTLS.
1797 Reported and fix submitted by irwir. Fixes #2800.
1798 * Remove a useless assignment. Reported and fix submitted by irwir.
1799 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001800 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01001801 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001802 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001803 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001804 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001805 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001806 * mbedtls_ctr_drbg_set_entropy_len() and
1807 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
1808 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001809
1810Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001811 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001812 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001813 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001814 before).
1815 * Variables containing error codes are now initialized to an error code
1816 rather than success, so that coding mistakes or memory corruption tends to
1817 cause functions to return this error code rather than a success. There are
1818 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01001819 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001820 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001821 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001822 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01001823 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001824 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001825 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03001826
Jaeden Amero914a5072019-09-18 13:35:57 +01001827= mbed TLS 2.19.1 branch released 2019-09-16
1828
1829Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06001830 * Declare include headers as PUBLIC to propagate to CMake project consumers
1831 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01001832 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
1833 TLS sessions with tools like Wireshark.
1834
1835API Changes
1836 * Make client_random and server_random const in
1837 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
1838 from modifying the client/server hello.
1839
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001840Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01001841 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001842 contributed by apple-ihack-geek in #2663.
1843
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001844= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001845
Gilles Peskine52157832018-08-11 00:51:04 +02001846Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001847 * Fix a missing error detection in ECJPAKE. This could have caused a
1848 predictable shared secret if a hardware accelerator failed and the other
1849 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02001850 * When writing a private EC key, use a constant size for the private
1851 value, as specified in RFC 5915. Previously, the value was written
1852 as an ASN.1 INTEGER, which caused the size of the key to leak
1853 about 1 bit of information on average and could cause the value to be
1854 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00001855 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
1856 implement blinding. Because of this for the same key and message the same
1857 blinding value was generated. This reduced the effectiveness of the
1858 countermeasure and leaked information about the private key through side
1859 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02001860
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001861Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001862 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02001863 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001864 store it in non-volatile storage, and later using it for TLS session
1865 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03001866 * Add a new API function mbedtls_ssl_check_record() to allow checking that
1867 an incoming record is valid, authentic and has not been seen before. This
1868 feature can be used alongside Connection ID and SSL context serialisation.
1869 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
1870 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001871 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
1872 (https://project-everest.github.io/). It can be enabled at compile time
1873 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
1874 verified and significantly faster, but is only supported on x86 platforms
1875 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
1876 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01001877 * Add mbedtls_net_close(), enabling the building of forking servers where
1878 the parent process closes the client socket and continue accepting, and
1879 the child process closes the listening socket and handles the client
1880 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001881
Gilles Peskine60b29d62019-08-14 18:37:59 +02001882API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02001883 * Add DER-encoded test CRTs to library/certs.c, allowing
1884 the example programs ssl_server2 and ssl_client2 to be run
1885 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
1886 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001887 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
1888 list all curves for which at least one of ECDH or ECDSA is supported, not
1889 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
1890 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
1891 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001892 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
1893 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
1894 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00001895
1896New deprecations
1897 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
1898 RNG function as an input.
1899 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
1900 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02001901
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001902Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01001903 * Fix missing bounds checks in X.509 parsing functions that could
1904 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
1905 * Fix multiple X.509 functions previously returning ASN.1 low-level error
1906 codes to always wrap these codes into X.509 high level error codes before
1907 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01001908 * Fix to allow building test suites with any warning that detects unused
1909 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01001910 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01001911 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01001912 * Fix build failure when building with mingw on Windows by including
1913 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01001914 * Fix Visual Studio Release x64 build configuration by inheriting
1915 PlatformToolset from the project configuration. Fixes #1430 reported by
1916 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01001917 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
1918 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02001919 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01001920 * Avoid use of statically sized stack buffers for certificate writing.
1921 This previously limited the maximum size of DER encoded certificates
1922 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04001923 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02001924 * Update test certificates that were about to expire. Reported by
1925 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02001926 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
1927 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
1928 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01001929 * Fix propagation of restart contexts in restartable EC operations.
1930 This could previously lead to segmentation faults in builds using an
1931 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01001932 * Fix memory leak in in mpi_miller_rabin(). Contributed by
1933 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06001934 * Improve code clarity in x509_crt module, removing false-positive
1935 uninitialized variable warnings on some recent toolchains (GCC8, etc).
1936 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01001937 * Fix bug in endianness conversion in bignum module. This lead to
1938 functionally incorrect code on bigendian systems which don't have
1939 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01001940
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001941Changes
Hanno Becker136512b2019-05-30 11:16:02 +01001942 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02001943 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
1944 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01001945 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06001946 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
1947 docker-env.sh) to simplify running test suites on a Linux host. Contributed
1948 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01001949 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
1950 test runs without variability. Contributed by Philippe Antoine (Catena
1951 cyber) in #2681.
1952 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02001953 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
1954 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001955 * Remove the crypto part of the library from Mbed TLS. The crypto
1956 code and tests are now only available via Mbed Crypto, which
1957 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001958
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001959= mbed TLS 2.18.1 branch released 2019-07-12
1960
Jaeden Ameroded319d2019-05-30 13:18:24 +01001961Bugfix
1962 * Fix build failure when building with mingw on Windows by including
1963 stdarg.h where needed. Fixes #2656.
1964
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001965Changes
1966 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
1967 Ashley Duncan in #2609.
1968
Jaeden Amerob1c72f52019-06-11 17:18:09 +01001969= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001970
Hanno Beckerac4172c2019-01-31 09:27:04 +00001971Features
1972 * Add the Any Policy certificate policy oid, as defined in
1973 rfc 5280 section 4.2.1.4.
1974 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
1975 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00001976 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
1977 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00001978 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00001979 Contributed by Jack Lloyd and Fortanix Inc.
1980 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001981 and the used tls-prf.
1982 * Add public API for tls-prf function, according to requested enum.
1983 * Add support for parsing otherName entries in the Subject Alternative Name
1984 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00001985 as defined in RFC 4108 section 5.
1986 * Add support for parsing certificate policies extension, as defined in
1987 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
1988 supported.
1989 * List all SAN types in the subject_alt_names field of the certificate.
1990 Resolves #459.
1991 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00001992 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
1993 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00001994 lifetime of the underlying transport by adding a connection identifier
1995 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001996 incoming record with the correct connection data even after the peer has
1997 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00001998 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
1999 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
2000
Paul Bakker5121ce52009-01-03 21:22:43 +00002001
Jaeden Amero4e0db562019-08-27 11:18:28 +01002002API Changes
2003 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
2004 and the used tls-prf.
2005 * Add public API for tls-prf function, according to requested enum.
2006
Paul Bakker5121ce52009-01-03 21:22:43 +00002007Bugfix
2008 * Fix private key DER output in the key_app_writer example. File contents
2009 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
2010 Christian Walther in #2239.
2011 * Fix potential memory leak in X.509 self test. Found and fixed by
2012 Junhwan Park, #2106.
2013 * Reduce stack usage of hkdf tests. Fixes #2195.
2014 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
2015 used with negative inputs. Found by Guido Vranken in #2404. Credit to
2016 OSS-Fuzz.
2017 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
2018 either used both encrypt and decrypt key schedules, or which perform padding.
2019 GCM and CCM were not affected. Fixed by Jack Lloyd.
2020 * Fix incorrect default port number in ssl_mail_client example's usage.
2021 Found and fixed by irwir. #2337
2022 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
2023 Fixed by Peter Kolbus (Garmin). #2579
2024 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00002025 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
2026 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002027 for the parameter.
2028 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00002029 sni entry parameter. Reported by inestlerode in #560.
2030 * Set the next sequence of the subject_alt_name to NULL when deleting
2031 sequence on failure. Found and fix suggested by Philippe Antoine.
2032 Credit to OSS-Fuzz.
2033
Paul Bakker5121ce52009-01-03 21:22:43 +00002034Changes
2035 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
2036 mbedTLS configuration only SHA-2 signed certificates are accepted.
2037 This certificate is used in the demo server programs, which lead the
2038 client programs to fail at the peer's certificate verification
2039 due to an unacceptable hash signature. The certificate has been
2040 updated to one that is SHA-256 signed. Fix contributed by
2041 Illya Gerasymchuk.
2042 * Return from various debugging routines immediately if the
2043 provided SSL context is unset.
2044 * Remove dead code from bignum.c in the default configuration.
2045 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
2046 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
2047 Contributed by Peter Kolbus (Garmin).
2048 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
2049 improve clarity. Fixes #2258.
2050
2051= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00002052
2053Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002054 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
2055 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00002056 at the cost of additional lifetime constraints on the input
2057 buffer, but at the benefit of reduced RAM consumption.
2058 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
2059 named bitstring in DER as required by RFC 5280 Appendix B.
2060 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
2061 from the default list (enabled by default). See
2062 https://sweet32.info/SWEET32_CCS16.pdf.
2063
2064API Changes
2065 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002066 See the Features section for more information.
2067 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
2068 for the benefit of saving RAM, by disabling the new compile-time
2069 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
2070 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
2071 always return NULL, and removes the peer_cert field from the
2072 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01002073 certificate.
2074
2075Security
2076 * Make mbedtls_ecdh_get_params return an error if the second key
2077 belongs to a different group from the first. Before, if an application
2078 passed keys that belonged to different group, the first key's data was
2079 interpreted according to the second group, which could lead to either
2080 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002081 latter case, this could expose at most 5 bits of the private key.
2082
2083Bugfix
2084 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
2085 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
2086 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
2087 Raised as a comment in #1996.
2088 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
2089 previously lead to a stack overflow on constrained targets.
2090 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
2091 in the header files, which missed the precompilation check. #971
2092 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
2093 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00002094 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
2095 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02002096 * Fix signed-to-unsigned integer conversion warning
2097 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06002098 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
2099 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01002100 * Fix false failure in all.sh when backup files exist in include/mbedtls
2101 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
2102 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
2103 mbedtls_asn1_write_bitstring().
2104 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
2105 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00002106 correctly as trailing zeroes were not accounted for as unused bits in the
2107 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00002108
2109Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002110 * Reduce RAM consumption during session renegotiation by not storing
2111 the peer CRT chain and session ticket twice.
2112 * Include configuration file in all header files that use configuration,
2113 instead of relying on other header files that they include.
2114 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05002115 * Add support for alternative CSR headers, as used by Microsoft and defined
2116 in RFC 7468. Found by Michael Ernst. Fixes #767.
2117 * Correct many misspellings. Fixed by MisterDA #2371.
2118 * Provide an abstraction of vsnprintf to allow alternative implementations
2119 for platforms that don't provide it. Based on contributions by Joris Aerts
2120 and Nathaniel Wesley Filardo.
2121 * Fix clobber list in MIPS assembly for large integer multiplication.
2122 Previously, this could lead to functionally incorrect assembly being
2123 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01002124 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
2125 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01002126 * Reduce the complexity of the timing tests. They were assuming more than the
2127 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01002128 * Fix configuration queries in ssl-opt.h. #2030
2129 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00002130 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
2131 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002132 * Ciphersuites based on 3DES now have the lowest priority by default when
2133 they are enabled.
2134
2135= mbed TLS 2.16.0 branch released 2018-12-21
2136
2137Features
2138 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
2139 of parameters in the API. This allows detection of obvious misuses of the
2140 API, such as passing NULL pointers. The API of existing functions hasn't
2141 changed, but requirements on parameters have been made more explicit in
2142 the documentation. See the corresponding API documentation for each
2143 function to see for which parameter values it is defined. This feature is
2144 disabled by default. See its API documentation in config.h for additional
2145 steps you have to take when enabling it.
2146
2147API Changes
2148 * The following functions in the random generator modules have been
2149 deprecated and replaced as shown below. The new functions change
2150 the return type from void to int to allow returning error codes when
2151 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
2152 primitive. Fixes #1798.
2153 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
2154 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
2155 * Extend ECDH interface to enable alternative implementations.
2156 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
2157 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
2158 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
2159 * Additional parameter validation checks have been added for the following
2160 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
2161 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
2162 Where modules have had parameter validation added, existing parameter
2163 checks may have changed. Some modules, such as Chacha20 had existing
2164 parameter validation whereas other modules had little. This has now been
2165 changed so that the same level of validation is present in all modules, and
2166 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
2167 is off. That means that checks which were previously present by default
2168 will no longer be.
2169
2170New deprecations
2171 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
2172 in favor of functions that can return an error code.
2173
2174Bugfix
2175 * Fix for Clang, which was reporting a warning for the bignum.c inline
2176 assembly for AMD64 targets creating string literals greater than those
2177 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
2178 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
2179 through qemu user emulation. Reported and fix suggested by randombit
2180 in #1212. Fixes #1212.
2181 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
2182 This could lead to a buffer overflow, but only in case ticket authentication
2183 was broken. Reported and fix suggested by Guido Vranken in #659.
2184 * Add explicit integer to enumeration type casts to example program
2185 programs/pkey/gen_key which previously led to compilation failure
2186 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
2187 * Fix double initialization of ECC hardware that made some accelerators
2188 hang.
2189 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05002190 of check for certificate/key matching. Reported by Attila Molnar, #507.
2191
2192 = mbed TLS 2.15.1 branch released 2018-11-30
2193
2194 Changes
2195 * Update the Mbed Crypto submodule to version 0.1.0b2.
2196
2197 = mbed TLS 2.15.0 branch released 2018-11-23
2198
2199 Features
2200 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
2201 Mbed Crypto as the source of the cryptography implementation.
2202 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
2203 the PSA Crypto API from Mbed Crypto when additionally used with the
2204 USE_CRYPTO_SUBMODULE build option.
2205
2206 Changes
2207 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002208 from the cipher abstraction layer. Fixes #2198.
2209
2210= mbed TLS 2.14.1 branch released 2018-11-30
2211
2212Security
2213 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
2214 decryption that could lead to a Bleichenbacher-style padding oracle
2215 attack. In TLS, this affects servers that accept ciphersuites based on
2216 RSA decryption (i.e. ciphersuites whose name contains RSA but not
2217 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
2218 (University of Adelaide), Daniel Genkin (University of Michigan),
2219 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
2220 (University of Adelaide, Data61). The attack is described in more detail
2221 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
2222 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
2223 via branching and memory access patterns. An attacker who could submit
2224 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
2225 of the decryption and not its result could nonetheless decrypt RSA
2226 plaintexts and forge RSA signatures. Other asymmetric algorithms may
2227 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
2228 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
2229 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
2230 modules.
2231
2232API Changes
2233 * The new functions mbedtls_ctr_drbg_update_ret() and
2234 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
2235 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002236 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00002237 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02002238
Hanno Beckerd3445da2018-11-02 09:36:45 +00002239= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00002240
Simon Butcherb35e59d2018-11-19 15:49:26 +00002241Security
Simon Butcher681edee2018-11-07 16:25:38 +00002242 * Fix overly strict DN comparison when looking for CRLs belonging to a
2243 particular CA. This previously led to ignoring CRLs when the CRL's issuer
2244 name and the CA's subject name differed in their string encoding (e.g.,
2245 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01002246 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00002247 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01002248 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00002249 incoming message buffer was placed within the first 64KiB of address
2250 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01002251 to trigger a memory access up to 64KiB beyond the incoming message buffer,
2252 potentially leading to an application crash or information disclosure.
2253 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
2254 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00002255 adversary to construct non-primes that would be erroneously accepted as
2256 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01002257 security of TLS, but can matter in other contexts with numbers chosen
2258 potentially by an adversary that should be prime and can be validated.
2259 For example, the number of rounds was enough to securely generate RSA key
2260 pairs or Diffie-Hellman parameters, but was insufficient to validate
2261 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00002262 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02002263 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02002264
Simon Butcherb35e59d2018-11-19 15:49:26 +00002265Features
2266 * Add support for temporarily suspending expensive ECC computations after
2267 some configurable amount of operations. This is intended to be used in
2268 constrained, single-threaded systems where ECC is time consuming and can
2269 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02002270 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
2271 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
2272 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
2273 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00002274 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
2275 including client authentication).
2276 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
2277 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00002278 MPI multiplications used in ECC and RSA cryptography. Contributed by
2279 Aurelien Jarno.
2280 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
2281 signature always used a salt with the same length as the hash, and returned
2282 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00002283 shorter. This allows the library to support all hash and signature sizes
2284 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02002285 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00002286 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00002287
2288API Changes
2289 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
2290 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00002291 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03002292 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00002293
2294New deprecations
2295 * All module specific errors following the form
2296 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00002297 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00002298 platform error.
2299 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01002300 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
2301 by the equivalent plaform error.
2302 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03002303 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01002304 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00002305
2306Bugfix
2307 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
2308 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01002309 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
2310 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01002311 * Fix a bug in the update function for SSL ticket keys which previously
2312 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01002313 * Fix failure in hmac_drbg in the benchmark sample application, when
2314 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
2315 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01002316 which lead to accepting properly authenticated but improperly
2317 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00002318 * Fix memory leak and freeing without initialization in the example
2319 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01002320 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
2321 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
2322 * Zeroize memory used for buffering or reassembling handshake messages
2323 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00002324 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
2325 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
2326 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00002327 UTF8String. Previously, the use of the PrintableString format led to
2328 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01002329 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
2330 Thomas-Dee.
2331 * Fix compilation failure for configurations which use compile time
2332 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01002333 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
2334 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01002335
Simon Butcherc86993e2018-09-27 09:48:54 +01002336Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02002337 * Removed support for Yotta as a build tool.
2338 * Add tests for session resumption in DTLS.
2339 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01002340 test the handling of large packets and small packets on the client side
2341 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01002342 * Change the dtls_client and dtls_server samples to work by default over
2343 IPv6 and optionally by a build option over IPv4.
2344 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00002345 calls, rather than Win32 API calls directly. This is necessary to avoid
2346 conflict with C runtime usage. Found and fixed by irwir.
2347 * Remember the string format of X.509 DN attributes when replicating
2348 X.509 DNs. Previously, DN attributes were always written in their default
2349 string format (mostly PrintableString), which could lead to CRTs being
2350 created which used PrintableStrings in the issuer field even though the
2351 signing CA used UTF8Strings in its subject field; while X.509 compliant,
2352 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00002353 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
2354 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01002355 * Improve documentation of mbedtls_ssl_get_verify_result().
2356 Fixes #517 reported by github-monoculture.
2357 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01002358 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01002359 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01002360
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01002361= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01002362
Hanno Becker921b76d2018-09-05 16:21:36 +01002363API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01002364 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01002365 whose implementation should behave as a thread-safe version of gmtime().
2366 This allows users to configure such an implementation at compile time when
2367 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01002368 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01002369 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01002370
2371Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01002372 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01002373 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002374
k-stachowiak21feae52018-07-09 14:42:35 +02002375= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02002376
2377Security
2378 * Fix an issue in the X.509 module which could lead to a buffer overread
2379 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02002380 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02002381 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02002382
2383Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02002384 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02002385 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02002386 with the peer, as well as by a new per-connection MTU option, set using
2387 mbedtls_ssl_set_mtu().
2388 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01002389 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
2390 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01002391 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01002392 enabled by default.
2393 * Add support for buffering out-of-order handshake messages in DTLS.
2394 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01002395 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
2396 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01002397
Hanno Beckerd87a59c2018-08-14 16:34:55 +01002398API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02002399 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02002400 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01002401
2402Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02002403 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
2404 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01002405 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
2406 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03002407 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03002408 Fix contributed by Espressif Systems.
2409 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01002410 This improves compliance to RFC 4492, and as a result, solves
2411 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01002412 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01002413 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01002414 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
2415 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
2416 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
2417 with TLS versions 1.1 and earlier when the server requested authentication
2418 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01002419 check in parsing the CertificateRequest message,
2420 introduced in Mbed TLS 2.12.0. Fixes #1954.
2421 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01002422 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
2423 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01002424 * Fix undefined shifts with negative values in certificates parsing
2425 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01002426 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02002427 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01002428 * Remove redundant else statement. Raised by irwir. Fixes #1776.
2429
2430Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01002431 * Copy headers preserving timestamps when doing a "make install".
2432 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01002433 * Allow the forward declaration of public structs. Contributed by Dawid
2434 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01002435 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01002436 CCM test vectors from RAM.
2437 * Add support for buffering of out-of-order handshake messages.
2438 * Add warnings to the documentation of the HKDF module to reduce the risk
2439 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002440 functions. Fixes #1775. Reported by Brian J. Murray.
2441
Gilles Peskine104d8582018-06-27 10:57:33 +02002442= mbed TLS 2.12.0 branch released 2018-07-25
2443
2444Security
2445 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
2446 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
2447 partially recover the plaintext of messages under some conditions by
2448 exploiting timing measurements. With DTLS, the attacker could perform
2449 this recovery by sending many messages in the same connection. With TLS
2450 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
2451 worked if the same secret (for example a HTTP Cookie) has been repeatedly
2452 sent over connections manipulated by the attacker. Connections using GCM
2453 or CCM instead of CBC, using hash sizes other than SHA-384, or using
2454 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
2455 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02002456 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
2457 Shamir.
2458 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02002459 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01002460 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02002461 plaintext of messages under some conditions by using a cache attack
2462 targeting an internal MD/SHA buffer. With TLS or if
2463 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
2464 the same secret (for example a HTTP Cookie) has been repeatedly sent over
2465 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02002466 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
2467 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
2468 * Add a counter-measure against a vulnerability in TLS ciphersuites based
2469 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
2470 execute code on the local machine as well as manipulate network packets,
2471 to partially recover the plaintext of messages under some conditions (see
2472 previous entry) by using a cache attack targeting the SSL input record
2473 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02002474 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02002475 Eyal Ronen and Adi Shamir.
2476
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02002477Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002478 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02002479 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01002480 by Daniel King.
2481 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01002482 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
2483 Contributed by Augustin Cavalier.
2484 * Make the receive and transmit buffers independent sizes, for situations
2485 where the outgoing buffer can be fixed at a smaller size than the incoming
2486 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03002487 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002488 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02002489 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01002490 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
2491
2492Bugfix
niisatob7d39db2018-06-25 20:44:57 +09002493 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09002494 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01002495 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002496 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01002497 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
2498 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01002499 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
2500 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01002501 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
2502 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03002503 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
2504 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002505 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
2506 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01002507 * Added length checks to some TLS parsing functions. Found and fixed by
2508 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03002509 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03002510 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01002511 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
2512 the `#include` in the header files. Resolves #857
2513 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01002514 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
2515 Drozd. #1098
2516 * Fix decryption for zero length messages (which contain all padding) when a
2517 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
2518 such a message was wrongly reported as an invalid record and therefore lead
2519 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01002520 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
2521 contributed by Espressif Systems. Fixes #1632
2522 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002523 when the request_size argument is set to 0 as stated in the documentation.
2524 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01002525 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01002526 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002527 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002528
2529Changes
2530 * Fail when receiving a TLS alert message with an invalid length, or invalid
2531 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
2532 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002533 when calling with a NULL salt and non-zero salt_len. Contributed by
2534 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00002535 * Change the shebang line in Perl scripts to look up perl in the PATH.
2536 Contributed by fbrosson.
2537 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002538 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02002539 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
2540
2541= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01002542
2543Features
2544 * Add additional block mode, OFB (Output Feedback), to the AES module and
2545 cipher abstraction module.
2546 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01002547 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
2548 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02002549 * Add support for the XTS block cipher mode with AES (AES-XTS).
2550 Contributed by Aorimn in pull request #414.
2551 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01002552 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01002553 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01002554
2555Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01002556 * Fix the cert_write example to handle certificates signed with elliptic
2557 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01002558 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
2559 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01002560 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01002561 Reported by rahmanih in #683
2562 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
2563
Simon Butcherb6a5bff2018-06-18 11:51:36 +01002564Changes
2565 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
2566 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02002567 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01002568 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002569
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01002570= mbed TLS 2.10.0 branch released 2018-06-06
2571
2572Features
2573 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02002574 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00002575
2576API Changes
2577 * Extend the platform module with a util component that contains
2578 functionality shared by multiple Mbed TLS modules. At this stage
2579 platform_util.h (and its associated platform_util.c) only contain
2580 mbedtls_platform_zeroize(), which is a critical function from a security
2581 point of view. mbedtls_platform_zeroize() needs to be regularly tested
2582 against compilers to ensure that calls to it are not removed from the
2583 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01002584 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01002585 facilitate testing and maintenance.
2586
2587Bugfix
2588 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002589 build to fail. Found by zv-io. Fixes #1651.
2590
Moran Pekera64fba42018-02-25 13:29:03 +02002591Changes
2592 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002593 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01002594 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02002595
Simon Butcherf85c90a2017-07-27 15:11:52 +01002596= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01002597
2598Security
2599 * Fix an issue in the X.509 module which could lead to a buffer overread
2600 during certificate validation. Additionally, the issue could also lead to
2601 unnecessary callback checks being made or to some validation checks to be
2602 omitted. The overread could be triggered remotely, while the other issues
2603 would require a non DER-compliant certificate to be correctly signed by a
2604 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
2605 luocm. Fixes #825.
2606 * Fix the buffer length assertion in the ssl_parse_certificate_request()
2607 function which led to an arbitrary overread of the message buffer. The
2608 overreads could be caused by receiving a malformed message at the point
2609 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04002610 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01002611 data is output with the debug data.
2612 * Fix a client-side bug in the validation of the server's ciphersuite choice
2613 which could potentially lead to the client accepting a ciphersuite it didn't
2614 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002615 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01002616 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01002617
2618Features
2619 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01002620 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
2621 Suggested and contributed by jkivilin in pull request #394.
2622 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002623 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01002624 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
2625 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01002626
2627API Changes
2628 * Extend the public API with the function of mbedtls_net_poll() to allow user
2629 applications to wait for a network context to become ready before reading
2630 or writing.
2631 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02002632 a check for whether more more data is pending to be processed in the
2633 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01002634 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00002635 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01002636
Gilles Peskine08185402018-03-22 21:50:48 +01002637Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01002638 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
2639 contributed by Brian J Murray and David Brown.
2640 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01002641 in configurations that omit certain hashes or public-key algorithms.
2642 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02002643 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01002644 #1353
2645 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
2646 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
2647 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08002648 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01002649 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07002650 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01002651 unable to parse keys which had only the optional parameters field of the
2652 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
2653 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02002654 stated in the mbedtls_cipher_update() documentation. Contributed by
2655 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01002656 * Fix overriding and ignoring return values when parsing and writing to
2657 a file in pk_sign program. Found by kevlut in #1142.
2658 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
2659 where data needs to be fetched from the underlying transport in order
2660 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01002661 returned when unexpected messages were being discarded, ignoring that
2662 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02002663 in the internal buffers; these cases led to deadlocks when event-driven
2664 I/O was used. Found and reported by Hubert Mis in #772.
2665 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04002666 function which leads to a potential one byte overread of the message
2667 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002668 * Fix invalid buffer sizes passed to zlib during record compression and
2669 decompression.
2670 * Fix the soversion of libmbedcrypto to match the soversion of the
2671 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01002672 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002673 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
2674
Simon Butcherb03120a2018-04-30 16:40:25 +01002675Changes
2676 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01002677 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
2678 independently by Matthieu Volat and Arne Schwabe.
2679 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00002680 public-key algorithms. Includes contributions by Gert van Dijk.
2681 * Improve negative testing of X.509 parsing.
2682 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01002683 configurations where the feature is disabled. Found and fixed by Gergely
2684 Budai.
2685 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
2686 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01002687 instead incorrectly manipulates the configuration structure directly.
2688 Found and fix submitted by junyeonLEE in #1220.
2689 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02002690 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
2691 without PBES2. Fixed by Marcos Del Sol Vives.
2692 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01002693 for Curve25519 (other curves had it already). Contributed by Nicholas
2694 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01002695 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
2696 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01002697 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002698 Paul Sokolovsky in #1356.
2699 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01002700 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002701 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01002702 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02002703 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02002704 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
2705 by Alexey Skalozub in #405.
2706 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02002707 transmitting more than the required length, return an error. Raised by
2708 Sam O'Connor in #1245.
2709 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01002710 HMAC functions with non-HMAC ciphersuites. Independently contributed
2711 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02002712 * Improve security of RSA key generation by including criteria from
2713 FIPS 186-4. Contributed by Jethro Beekman. #1380
2714 * Declare functions in header files even when an alternative implementation
2715 of the corresponding module is activated by defining the corresponding
2716 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04002717 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002718 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00002719 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01002720
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002721= mbed TLS 2.8.0 branch released 2018-03-16
2722
Thomas Daubneyd596e992021-06-18 11:50:56 +01002723Default behavior changes
2724 * The truncated HMAC extension now conforms to RFC 6066. This means
2725 that when both sides of a TLS connection negotiate the truncated
2726 HMAC extension, Mbed TLS can now interoperate with other
2727 compliant implementations, but this breaks interoperability with
2728 prior versions of Mbed TLS. To restore the old behavior, enable
2729 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
2730 config.h. Found by Andreas Walz (ivESK, Offenburg University of
2731 Applied Sciences).
2732
Hanno Becker7dc832b2017-11-16 17:39:34 +00002733Security
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002734 * Fix implementation of the truncated HMAC extension. The previous
2735 implementation allowed an offline 2^80 brute force attack on the
2736 HMAC key of a single, uninterrupted connection (with no
2737 resumption of the session).
Gilles Peskine553a06f2018-03-13 17:15:34 +01002738 * Verify results of RSA private key operations to defend
2739 against Bellcore glitch attack.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002740 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
2741 a crash on invalid input.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002742 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
2743 crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01002744 * Fix CRL parsing to reject CRLs containing unsupported critical
2745 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
Hanno Becker7dc832b2017-11-16 17:39:34 +00002746
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002747Features
2748 * Extend PKCS#8 interface by introducing support for the entire SHA
2749 algorithms family when encrypting private keys using PKCS#5 v2.0.
Gilles Peskine1d80a672018-02-14 11:33:30 +01002750 This allows reading encrypted PEM files produced by software that
2751 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
2752 OpenVPN Inc. Fixes #1339
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01002753 * Add support for public keys encoded in PKCS#1 format. #1122
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002754
Hanno Beckercf092b22018-03-06 14:23:38 +00002755New deprecations
2756 * Deprecate support for record compression (configuration option
2757 MBEDTLS_ZLIB_SUPPORT).
2758
Gilles Peskine27b07542018-02-14 14:07:48 +01002759Bugfix
2760 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
2761 Fixes #1358.
Gilles Peskine1e3fd692018-02-14 15:12:49 +01002762 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Ron Eldor099e61d2018-02-06 17:34:27 +02002763 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
2764 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Gilles Peskine1bf61232018-02-27 08:37:52 +01002765 In the context of SSL, this resulted in handshake failure. Reported by
2766 daniel in the Mbed TLS forum. #1351
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00002767 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
Gilles Peskineb4c571e2018-03-11 00:44:14 +01002768 * Fix setting version TLSv1 as minimal version, even if TLS 1
2769 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
2770 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
2771 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldor2f73c932017-09-26 15:06:56 +03002772 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
2773 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
Ron Eldorbc18eb32017-09-06 17:49:10 +03002774 Nick Wilson on issue #355
Gilles Peskine08af5382018-03-11 00:15:56 +01002775 * In test_suite_pk, pass valid parameters when testing for hash length
itayzafrir693a1d92018-02-26 12:02:10 +02002776 overflow. #1179
Gilles Peskinea31d8202018-03-12 23:45:08 +01002777 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
2778 by Guido Vranken. #639
Gilles Peskine3ff4a072018-03-12 23:54:20 +01002779 * Log correct number of ciphersuites used in Client Hello message. #918
Gilles Peskine5f193282018-03-13 17:18:06 +01002780 * Fix X509 CRT parsing that would potentially accept an invalid tag when
2781 parsing the subject alternative names.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002782 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
2783 that could cause a key exchange to fail on valid data.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002784 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
2785 could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01002786 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
2787 MBEDTLS_DEPRECATED_REMOVED. #1388
Sanne Woudacf793122017-09-07 16:33:44 +01002788 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
2789 Found through fuzz testing.
Gilles Peskine27b07542018-02-14 14:07:48 +01002790
2791Changes
2792 * Fix tag lengths and value ranges in the documentation of CCM encryption.
2793 Contributed by Mathieu Briand.
Gilles Peskine5daa7652018-02-14 14:10:24 +01002794 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
Gilles Peskinedf298682018-02-14 15:49:54 +01002795 * Remove support for the library reference configuration for picocoin.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01002796 * MD functions deprecated in 2.7.0 are no longer inline, to provide
2797 a migration path for those depending on the library's ABI.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02002798 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine6dc4a312018-03-13 00:13:06 +01002799 * Use (void) when defining functions with no parameters. Contributed by
2800 Joris Aerts. #678
Gilles Peskine27b07542018-02-14 14:07:48 +01002801
Simon Butcher55fc4e02018-02-05 01:09:13 +00002802= mbed TLS 2.7.0 branch released 2018-02-03
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002803
Gilles Peskine28a0c722017-10-17 19:01:38 +02002804Security
Simon Butcher55fc4e02018-02-05 01:09:13 +00002805 * Fix a heap corruption issue in the implementation of the truncated HMAC
2806 extension. When the truncated HMAC extension is enabled and CBC is used,
2807 sending a malicious application packet could be used to selectively corrupt
2808 6 bytes on the peer's heap, which could potentially lead to crash or remote
2809 code execution. The issue could be triggered remotely from either side in
2810 both TLS and DTLS. CVE-2018-0488
2811 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
2812 for the key size, which could potentially lead to crash or remote code
2813 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
2814 Qualcomm Technologies Inc. CVE-2018-0487
2815 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
2816 zeros.
2817 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
2818 64 KiB to the address of the SSL buffer and causing a wrap around.
2819 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
Hanno Becker930025d2017-09-18 16:07:19 +01002820 default enabled) maximum fragment length extension is disabled in the
2821 config and the application data buffer passed to mbedtls_ssl_write
2822 is larger than the internal message buffer (16384 bytes by default), the
2823 latter overflows. The exploitability of this issue depends on whether the
2824 application layer can be forced into sending such large packets. The issue
2825 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
Simon Butcher55fc4e02018-02-05 01:09:13 +00002826 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
2827 Fixes #707.
2828 * Add a provision to prevent compiler optimizations breaking the time
2829 constancy of mbedtls_ssl_safer_memcmp().
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01002830 * Ensure that buffers are cleared after use if they contain sensitive data.
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01002831 Changes were introduced in multiple places in the library.
Ron Eldor31162e42017-09-05 15:34:35 +03002832 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
2833 being leaked to memory after release.
Janos Follathb174c842017-09-20 16:26:04 +01002834 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
2835 leaking 1 bit of the private key. Reported by prashantkspatil.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002836 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
2837 data. Previously, trailing zero bytes were detected and omitted for the
2838 sake of saving memory, but potentially leading to slight timing
2839 differences. Reported by Marco Macchetti, Kudelski Group.
Hanno Becker509fef72017-10-19 10:10:18 +01002840 * Wipe stack buffer temporarily holding EC private exponent
2841 after keypair generation.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002842 * Fix a potential heap buffer over-read in ALPN extension parsing
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01002843 (server-side). Could result in application crash, but only if an ALPN
2844 name larger than 16 bytes had been configured on the server.
Hanno Becker0cd5b942017-10-13 17:17:28 +01002845 * Change default choice of DHE parameters from untrustworthy RFC 5114
2846 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
2847 manner.
Gilles Peskine28a0c722017-10-17 19:01:38 +02002848
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002849Features
2850 * Allow comments in test data files.
Gilles Peskinec82fbb42017-12-15 15:01:27 +01002851 * The selftest program can execute a subset of the tests based on command
2852 line arguments.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02002853 * New unit tests for timing. Improve the self-test to be more robust
2854 when run on a heavily-loaded machine.
Gilles Peskine618d0912018-01-02 16:04:19 +01002855 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Jaeden Amero91d49e82018-01-11 16:35:44 +00002856 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Jaeden Amero15263302017-09-21 12:53:48 +01002857 * Add support for alternative implementations of GCM, selected by the
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01002858 configuration flag MBEDTLS_GCM_ALT.
Ron Eldor314adb62017-10-10 18:28:25 +03002859 * Add support for alternative implementations for ECDSA, controlled by new
2860 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
2861 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03002862 The following functions from the ECDSA module can be replaced
Ron Eldor314adb62017-10-10 18:28:25 +03002863 with alternative implementation:
Ron Eldor2981a0a2017-09-24 15:41:09 +03002864 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Hanno Becker087d5ad2018-01-24 16:06:25 +00002865 * Add support for alternative implementation of ECDH, controlled by the
2866 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
Ron Eldora84c1cb2017-10-10 19:04:27 +03002867 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
Ron Eldor8b766212017-09-24 15:44:56 +03002868 The following functions from the ECDH module can be replaced
2869 with an alternative implementation:
2870 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Hanno Becker087d5ad2018-01-24 16:06:25 +00002871 * Add support for alternative implementation of ECJPAKE, controlled by
2872 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002873 * Add mechanism to provide alternative implementation of the DHM module.
Gilles Peskine26182ed2017-09-29 15:45:12 +02002874
Hanno Beckera47023e2017-12-22 17:08:03 +00002875API Changes
2876 * Extend RSA interface by multiple functions allowing structure-
2877 independent setup and export of RSA contexts. Most notably,
Simon Butcher55fc4e02018-02-05 01:09:13 +00002878 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
Hanno Beckera47023e2017-12-22 17:08:03 +00002879 up RSA contexts from partial key material and having them completed to the
2880 needs of the implementation automatically. This allows to setup private RSA
2881 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
2882 purpose or CRT and/or blinding.
2883 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
2884 implementations of the RSA interface declared in rsa.h.
Gilles Peskine0a969102018-01-22 14:55:20 +01002885 * The following functions in the message digest modules (MD2, MD4, MD5,
2886 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
2887 The new functions change the return type from void to int to allow
2888 returning error codes when using MBEDTLS_<MODULE>_ALT.
2889 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
2890 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
2891 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01002892 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002893
Ron Eldor73a38172017-10-03 15:58:26 +03002894New deprecations
2895 * Deprecate usage of RSA primitives with non-matching key-type
Simon Butcher55fc4e02018-02-05 01:09:13 +00002896 (e.g. signing with a public key).
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01002897 * Direct manipulation of structure fields of RSA contexts is deprecated.
2898 Users are advised to use the extended RSA API instead.
Jaeden Amero005239e2018-01-25 14:47:39 +00002899 * Deprecate usage of message digest functions that return void
2900 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
2901 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
2902 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
2903 that can return an error code.
Hanno Becker0cd5b942017-10-13 17:17:28 +01002904 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
2905 parameters from RFC 3526 or the newly added parameters from RFC 7919.
2906 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
2907 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
2908 etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002909 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
2910 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Hanno Becker0cd5b942017-10-13 17:17:28 +01002911 accepting DHM parameters in binary form, matching the new constants.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002912
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002913Bugfix
2914 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
2915 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher2c4f9462017-09-30 23:39:46 +01002916 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Simon Butcherb03120a2018-04-30 16:40:25 +01002917 Found by projectgus and Jethro Beekman, #836.
Simon Butcher16373a52017-10-02 19:12:54 +01002918 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
Ron Eldor73a38172017-10-03 15:58:26 +03002919 * Parse signature algorithm extension when renegotiating. Previously,
2920 renegotiated handshakes would only accept signatures using SHA-1
2921 regardless of the peer's preferences, or fail if SHA-1 was disabled.
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00002922 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
2923 dates on leap years with 100 and 400 intervals are handled correctly. Found
2924 by Nicholas Wilson. #694
Gilles Peskine91048a32017-10-19 17:46:14 +02002925 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
2926 accepted. Generating these signatures required the private key.
Gilles Peskinee7707222017-11-24 15:35:50 +01002927 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
2928 Found independently by Florian in the mbed TLS forum and by Mishamax.
2929 #878, #1019.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01002930 * Fix variable used before assignment compilation warnings with IAR
2931 toolchain. Found by gkerrien38.
Andres AG51a7ae12017-02-22 16:23:26 +00002932 * Fix unchecked return codes from AES, DES and 3DES functions in
2933 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
2934 If a call to one of the functions of the cryptographic primitive modules
2935 failed, the error may not be noticed by the function
2936 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
2937 Guido Vranken. #756
Gilles Peskine4b117d92017-11-28 17:23:37 +01002938 * Include configuration file in md.h, to fix compilation warnings.
2939 Reported by aaronmdjones in #1001
Hanno Becker041a6b02017-09-28 14:52:26 +01002940 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
2941 writing routines that prevented these functions to work with alternative
2942 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Hanno Becker86e52302017-10-05 09:08:53 +01002943 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
2944 non-v3 CRT's.
Gilles Peskined742b742017-11-28 17:40:56 +01002945 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00002946 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01002947 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002948 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Hanno Becker479e8e22017-10-12 15:39:45 +01002949 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002950 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Darryl Green36ba8b62017-11-21 09:55:33 +00002951 Reported by Yolan Romailler.
Gilles Peskineff01e002017-12-01 23:42:17 +01002952 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
Gilles Peskined6294112017-12-01 23:46:58 +01002953 * Fix incorrect unit in benchmark output. #850
Hanno Becker81e96dd2017-09-18 11:07:25 +01002954 * Add size-checks for record and handshake message content, securing
2955 fragile yet non-exploitable code-paths.
Ron Eldore1a9a4a2017-10-17 18:15:41 +03002956 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
2957 MilenkoMitrovic, #1104
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01002958 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002959 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Gilles Peskineec9c6262018-01-02 16:27:50 +01002960 * Fix possible memory leaks in mbedtls_gcm_self_test().
2961 * Added missing return code checks in mbedtls_aes_self_test().
Hanno Becker997e2182018-01-10 10:39:20 +00002962 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
2963 RSA test suite where the failure of CTR DRBG initialization lead to
2964 freeing an RSA context and several MPI's without proper initialization
2965 beforehand.
Gilles Peskine980d2032018-01-22 23:10:53 +01002966 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01002967 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
2968 Found and fixed by Martijn de Milliano.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002969 * Fix an issue in the cipher decryption with the mode
2970 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
2971 Note, this padding mode is not used by the TLS protocol. Found and fixed by
2972 Micha Kraus.
Gilles Peskined91f2a22018-01-19 11:25:10 +01002973 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
2974 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
2975 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
2976 mbedtls_sha512_init() is called before operating on the relevant context
Gilles Peskine0a969102018-01-22 14:55:20 +01002977 structure. Do not assume that zeroizing a context is a correct way to
2978 reset it. Found independently by ccli8 on Github.
2979 * In mbedtls_entropy_free(), properly free the message digest context.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002980 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
2981 and fixed by muddog.
Hanno Becker86e52302017-10-05 09:08:53 +01002982
2983Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00002984 * Extend cert_write example program by options to set the certificate version
Hanno Becker86e52302017-10-05 09:08:53 +01002985 and the message digest. Further, allow enabling/disabling of authority
2986 identifier, subject identifier and basic constraints extensions.
Hanno Becker32297e82017-12-22 10:24:32 +00002987 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
2988 particular, don't require P,Q if neither CRT nor blinding are
2989 used. Reported and fix proposed independently by satur9nine and sliai
2990 on GitHub.
Gilles Peskineec9c6262018-01-02 16:27:50 +01002991 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine50984002018-01-17 08:01:37 +01002992 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
2993 undeclared dependency of the RSA module on the ASN.1 module.
Gilles Peskine0a969102018-01-22 14:55:20 +01002994 * Update all internal usage of deprecated message digest functions to the
2995 new ones with return codes. In particular, this modifies the
2996 mbedtls_md_info_t structure. Propagate errors from these functions
2997 everywhere except some locations in the ssl_tls.c module.
Jaeden Amero791e08a2018-01-26 12:04:12 +00002998 * Improve CTR_DRBG error handling by propagating underlying AES errors.
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01002999 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
3000 modules where the software implementation can be replaced by a hardware
3001 implementation.
Hanno Becker2a037942017-10-06 12:29:50 +01003002 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
3003 throughout the library.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003004
Simon Butcher72ea31b2017-08-10 11:51:16 +01003005= mbed TLS 2.6.0 branch released 2017-08-10
Ron Eldord5a75f42016-12-16 16:15:56 +02003006
Simon Butcherb060cc22017-07-28 01:04:34 +01003007Security
Simon Butcher01971d02017-08-10 10:48:01 +01003008 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcherf85c90a2017-07-27 15:11:52 +01003009 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
3010 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher01971d02017-08-10 10:48:01 +01003011 (default: 8) intermediates, even when it was not trusted. This could be
3012 triggered remotely from either side. (With authmode set to 'required'
Simon Butcher3f2557e2017-08-01 18:06:12 +01003013 (the default), the handshake was correctly aborted).
3014 * Reliably wipe sensitive data after use in the AES example applications
Hanno Becker7ec83df2017-06-27 08:26:53 +01003015 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
3016 Found by Laurent Simon.
Simon Butcherf85c90a2017-07-27 15:11:52 +01003017
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01003018Features
3019 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01003020 and the context struct mbedtls_platform_context to perform
3021 platform-specific setup and teardown operations. The macro
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01003022 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
Simon Butcher3f2557e2017-08-01 18:06:12 +01003023 by the user in a platform_alt.h file. These new functions are required in
Simon Butcher01971d02017-08-10 10:48:01 +01003024 some embedded environments to provide a means of initialising underlying
3025 cryptographic acceleration hardware.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01003026
Simon Butcherab670432017-07-20 12:33:41 +02003027API Changes
3028 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
3029 API consistent with mbed TLS 2.5.0. Specifically removed the inline
3030 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcher3f2557e2017-08-01 18:06:12 +01003031 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
3032 by James Cowgill. #978
Simon Butcherf85c90a2017-07-27 15:11:52 +01003033 * Certificate verification functions now set flags to -1 in case the full
3034 chain was not verified due to an internal error (including in the verify
3035 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01003036 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherf85c90a2017-07-27 15:11:52 +01003037 verification of the peer's certificate failed due to an overlong chain or
Simon Butcher01971d02017-08-10 10:48:01 +01003038 a fatal error in the verify callback.
Simon Butcherab670432017-07-20 12:33:41 +02003039
Ron Eldore2efaea2016-12-16 16:15:56 +02003040Bugfix
Simon Butcher01971d02017-08-10 10:48:01 +01003041 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
3042 Reported by roberto. #716
3043 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Ron Eldor63140682017-01-09 19:27:59 +02003044 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
Simon Butcher3f2557e2017-08-01 18:06:12 +01003045 always be implemented by pthread support. #696
Simon Butcher01971d02017-08-10 10:48:01 +01003046 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
3047 in the case of an error. Found by redplait. #590
Ron Eldorca6ff582017-01-12 14:50:50 +02003048 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Simon Butcher3f2557e2017-08-01 18:06:12 +01003049 Reported and fix suggested by guidovranken. #740
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01003050 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
3051 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01003052 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01003053 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Simon Butcher5deb5182017-07-26 17:25:55 +01003054 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
3055 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00003056 * Fix potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01003057 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Andres AG2e65a542017-02-17 13:54:43 +00003058 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
3059 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01003060 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01003061 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher5deb5182017-07-26 17:25:55 +01003062 constructed certificates to bypass the certificate verification check.
Simon Butchera418e822017-07-28 23:52:10 +01003063 * Fix a call to the libc function time() to call the platform abstraction
Simon Butcher3f2557e2017-08-01 18:06:12 +01003064 function mbedtls_time() instead. Found by wairua. #666
3065 * Avoid shadowing of time and index functions through mbed TLS function
3066 arguments. Found by inestlerode. #557.
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02003067
Janos Follath78b14732017-06-22 10:02:07 +01003068Changes
Janos Follathb85291c2017-06-22 10:02:07 +01003069 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Simon Butcher3f2557e2017-08-01 18:06:12 +01003070 64-bit division. This is useful on embedded platforms where 64-bit division
3071 created a dependency on external libraries. #708
Janos Follath78b14732017-06-22 10:02:07 +01003072 * Removed mutexes from ECP hardware accelerator code. Now all hardware
3073 accelerator code in the library leaves concurrency handling to the
3074 platform. Reported by Steven Cooreman. #863
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01003075 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
3076 config-no-entropy.h to reduce the RAM footprint.
Simon Butcher3f2557e2017-08-01 18:06:12 +01003077 * Added a test script that can be hooked into git that verifies commits
3078 before they are pushed.
Hanno Becker85b602e2017-05-04 11:27:39 +01003079 * Improve documentation of PKCS1 decryption functions.
Janos Follath78b14732017-06-22 10:02:07 +01003080
Simon Butcherf2a597f2017-06-20 23:08:10 +01003081= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckereccf60c2017-06-05 15:19:01 +01003082
Gilles Peskine5e79cb32017-05-04 16:17:21 +02003083Security
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01003084 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
3085 The issue could only happen client-side with renegotiation enabled.
3086 Could result in DoS (application crash) or information leak
3087 (if the application layer sent data read from mbedtls_ssl_read()
3088 back to the server or to a third party). Can be triggered remotely.
Gilles Peskine5d2511c2017-05-12 13:16:40 +02003089 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
3090 certificate verification. SHA-1 can be turned back on with a compile-time
3091 option if needed.
Gilles Peskined50177f2017-05-16 17:53:03 +02003092 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
3093 detect it sometimes. Reported by Hugo Leisink. #810
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02003094 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
3095 potential Bleichenbacher/BERserk-style attack.
Gilles Peskine5e79cb32017-05-04 16:17:21 +02003096
Hanno Beckereccf60c2017-06-05 15:19:01 +01003097Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01003098 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
3099 valid C and they prevented the test from compiling in Visual Studio 2015
3100 and with GCC using the -Wpedantic compilation option.
Hanno Becker7e5437a2017-04-28 17:15:26 +01003101 * Fix insufficient support for signature-hash-algorithm extension,
3102 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Janos Follath5a1c0e72017-06-16 09:00:07 +01003103 * Fix behaviour that hid the original cause of fatal alerts in some cases
3104 when sending the alert failed. The fix makes sure not to hide the error
Gilles Peskine3df98f52017-05-10 17:47:40 +02003105 that triggered the alert.
Janos Follath5a1c0e72017-06-16 09:00:07 +01003106 * Fix SSLv3 renegotiation behaviour and stop processing data received from
3107 peer after sending a fatal alert to refuse a renegotiation attempt.
3108 Previous behaviour was to keep processing data even after the alert has
3109 been sent.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01003110 * Accept empty trusted CA chain in authentication mode
Simon Butcherb03120a2018-04-30 16:40:25 +01003111 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
Janos Follath5a1c0e72017-06-16 09:00:07 +01003112 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
3113 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
3114 reflect bad EC curves within verification result.
3115 * Fix bug that caused the modular inversion function to accept the invalid
3116 modulus 1 and therefore to hang. Found by blaufish. #641.
3117 * Fix incorrect sign computation in modular exponentiation when the base is
3118 a negative MPI. Previously the result was always negative. Found by Guido
3119 Vranken.
3120 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
3121 that was triggered uppon reading an empty line. Found by Guido Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02003122
Gilles Peskine36091fe2017-05-03 16:55:03 +02003123Changes
Janos Follath5a1c0e72017-06-16 09:00:07 +01003124 * Send fatal alerts in more cases. The previous behaviour was to skip
3125 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00003126 * Clarify ECDSA documentation and improve the sample code to avoid
Janos Follath5a1c0e72017-06-16 09:00:07 +01003127 misunderstanding and potentially dangerous use of the API. Pointed out
Janos Follath0a5154b2017-03-10 11:31:41 +00003128 by Jean-Philippe Aumasson.
Gilles Peskine36091fe2017-05-03 16:55:03 +02003129
Simon Butcher9f770172017-05-15 15:13:59 +01003130= mbed TLS 2.5.0 branch released 2017-05-17
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01003131
Janos Follath45182a02017-03-23 10:41:56 +00003132Security
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01003133 * Wipe stack buffers in RSA private key operations
Janos Follath5a1c0e72017-06-16 09:00:07 +01003134 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
3135 Simon.
Janos Follath45182a02017-03-23 10:41:56 +00003136 * Add exponent blinding to RSA private operations as a countermeasure
3137 against side-channel attacks like the cache attack described in
3138 https://arxiv.org/abs/1702.08719v2.
3139 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
3140 Clémentine Maurice and Stefan Mangard.
3141
Simon Butcher4775e832017-05-13 22:56:08 +01003142Features
Janos Follath5a1c0e72017-06-16 09:00:07 +01003143 * Add hardware acceleration support for the Elliptic Curve Point module.
3144 This involved exposing parts of the internal interface to enable
3145 replacing the core functions and adding and alternative, module level
3146 replacement support for enabling the extension of the interface.
Janos Follath7a8a0902017-04-10 16:13:06 +01003147 * Add a new configuration option to 'mbedtls_ssl_config' to enable
3148 suppressing the CA list in Certificate Request messages. The default
3149 behaviour has not changed, namely every configured CAs name is included.
3150
Andres AGf5bf7182017-03-03 14:09:56 +00003151API Changes
3152 * The following functions in the AES module have been deprecated and replaced
3153 by the functions shown below. The new functions change the return type from
3154 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
3155 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
3156 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
3157 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
3158
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01003159Bugfix
3160 * Remove macros from compat-1.3.h that correspond to deleted items from most
3161 recent versions of the library. Found by Kyle Keen.
Janos Follath5a1c0e72017-06-16 09:00:07 +01003162 * Fixed issue in the Threading module that prevented mutexes from
3163 initialising. Found by sznaider. #667 #843
3164 * Add checks in the PK module for the RSA functions on 64-bit systems.
3165 The PK and RSA modules use different types for passing hash length and
3166 without these checks the type cast could lead to data loss. Found by Guido
3167 Vranken.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01003168
Simon Butcherb65c2be2017-03-10 18:50:44 +00003169= mbed TLS 2.4.2 branch released 2017-03-08
Andres AG703990b2016-10-24 11:23:36 +01003170
Janos Follath182013f2016-10-25 10:50:22 +01003171Security
Simon Butcherb65c2be2017-03-10 18:50:44 +00003172 * Add checks to prevent signature forgeries for very large messages while
3173 using RSA through the PK module in 64-bit systems. The issue was caused by
3174 some data loss when casting a size_t to an unsigned int value in the
3175 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
3176 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
Andres AG939954c2016-12-08 17:08:44 +00003177 * Fixed potential livelock during the parsing of a CRL in PEM format in
3178 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
3179 characters after the footer could result in the execution of an infinite
3180 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
3181 Microsoft.
Janos Follath182013f2016-10-25 10:50:22 +01003182 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
3183 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
Simon Butcher0621b1f2017-02-05 16:48:47 +00003184 Introduced by interoperability fix for #513.
Janos Follath7dadc2f2017-01-27 16:05:20 +00003185 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
3186 when verifying the validity of a key on secp224k1. This could be
3187 triggered remotely for example with a maliciously constructed certificate
Simon Butcher71e9d582017-02-28 18:47:27 +00003188 and potentially could lead to remote code execution on some platforms.
Simon Butcher8b987502017-03-07 12:37:14 +00003189 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
3190 team. #569 CVE-2017-2784
Janos Follath7dadc2f2017-01-27 16:05:20 +00003191
Andres AG703990b2016-10-24 11:23:36 +01003192Bugfix
Andres AGd1650662016-12-09 17:26:23 +00003193 * Fix output certificate verification flags set by x509_crt_verify_top() when
3194 traversing a chain of trusted CA. The issue would cause both flags,
3195 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
3196 set when the verification conditions are not met regardless of the cause.
3197 Found by Harm Verhagen and inestlerode. #665 #561
Simon Butcherd57c8f02017-02-02 13:08:37 +00003198 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
3199 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
3200 Found by omlib-lin. #673
Andres AGc0db5112016-12-07 15:05:53 +00003201 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
3202 x509_csr.c that are reported when building mbed TLS with a config.h that
Simon Butchera333b3c2017-02-02 16:17:37 +00003203 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
Andres AG2196c7f2016-12-15 17:01:16 +00003204 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
3205 would compare 64 bits of the record counter instead of 48 bits as indicated
3206 in RFC 6347 Section 4.3.1. This could cause the execution of the
3207 renegotiation routines at unexpected times when the protocol is DTLS. Found
3208 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01003209 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres AG9c94b692016-10-24 14:31:54 +01003210 the input string in PEM format to extract the different components. Found
Andres AG703990b2016-10-24 11:23:36 +01003211 by Eyal Itkin.
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00003212 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
3213 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
3214 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
3215 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
3216 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
3217 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00003218 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
3219 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00003220 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
3221 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Andres AG5708dcb2016-12-08 17:19:21 +00003222 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
3223 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcherd02dc142017-02-28 16:36:22 +00003224 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
3225 fix proposed by Guido Vranken. #722
Simon Butcher956c58f2017-03-02 09:18:09 +00003226 * Fixed the templates used to generate project and solution files for Visual
3227 Studio 2015 as well as the files themselves, to remove a build warning
3228 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Ron Eldor12e0b802017-01-29 18:51:35 +02003229 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
3230 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
Andres AGd1cc7f62017-01-06 13:17:35 +00003231 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
3232 number to write in hexadecimal is negative and requires an odd number of
3233 digits. Found and fixed by Guido Vranken.
Simon Butcher81cf88f2017-03-07 19:35:49 +00003234 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
3235 by inestlerode. #555
Andres AG703990b2016-10-24 11:23:36 +01003236
Janos Follath4c006cd2016-12-13 14:14:03 +00003237= mbed TLS 2.4.1 branch released 2016-12-13
Janos Follath5da3a6f2016-12-13 11:51:04 +00003238
3239Changes
3240 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
3241 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
3242 Authentication – October 2016
3243
Simon Butcher19dbd412016-10-16 19:35:49 +01003244= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butchercf8c1f42016-09-02 21:29:39 +03003245
Andres AG60dbc932016-09-02 15:23:48 +01003246Security
Simon Butcheref8fa012016-10-16 00:44:08 +01003247 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
3248 with RFC-5116 and could lead to session key recovery in very long TLS
3249 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
3250 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
3251 https://eprint.iacr.org/2016/475.pdf
3252 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Andres AG60dbc932016-09-02 15:23:48 +01003253 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AGe0af9952016-09-07 11:09:44 +01003254 without checking whether there is enough space in the destination. The
Simon Butcheref8fa012016-10-16 00:44:08 +01003255 issue cannot be triggered remotely. Found by Jethro Beekman.
Andres AG60dbc932016-09-02 15:23:48 +01003256
Simon Butchercf8c1f42016-09-02 21:29:39 +03003257Features
Simon Butcher21c54812016-10-05 14:17:37 +01003258 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
3259 NIST SP 800-38B, RFC-4493 and RFC-4615.
Simon Butchercf8c1f42016-09-02 21:29:39 +03003260 * Added hardware entropy selftest to verify that the hardware entropy source
3261 is functioning correctly.
3262 * Added a script to print build environment info for diagnostic use in test
3263 scripts, which is also now called by all.sh.
Andres AGf9113192016-09-02 14:06:04 +01003264 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
3265 configure the maximum length of a file path that can be buffered when
3266 calling mbedtls_x509_crt_parse_path().
Simon Butcheref8fa012016-10-16 00:44:08 +01003267 * Added a configuration file config-no-entropy.h that configures the subset of
Andres AGf84f8922016-09-19 15:33:30 +01003268 library features that do not require an entropy source.
Andres AG7abc9742016-09-23 17:58:49 +01003269 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
3270 to configure the minimum number of bytes for entropy sources using the
3271 mbedtls_hardware_poll() function.
Simon Butchercf8c1f42016-09-02 21:29:39 +03003272
3273Bugfix
3274 * Fix for platform time abstraction to avoid dependency issues where a build
3275 may need time but not the standard C library abstraction, and added
3276 configuration consistency checks to check_config.h
3277 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butcheref8fa012016-10-16 00:44:08 +01003278 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
3279 when GCM is used. Found by udf2457. #441
Simon Butchercad6e932016-09-05 01:46:59 +03003280 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
3281 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcherc0d76b82016-09-07 17:25:16 +03003282 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
3283 a contribution from Tobias Tangemann. #541
Simon Butcheref8fa012016-10-16 00:44:08 +01003284 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcherd43fb952016-09-26 20:48:56 +01003285 certificates are provided.
Andres AG776a6fc2016-09-26 09:52:41 +01003286 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcher3a5e0702016-10-12 16:37:59 +01003287 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcher851ae292016-10-11 10:13:52 +01003288 * Fixed pthread implementation to avoid unintended double initialisations
Simon Butcheref8fa012016-10-16 00:44:08 +01003289 and double frees. Found by Niklas Amnebratt.
Simon Butcherf77309c2016-10-07 15:56:07 +01003290 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
3291 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
3292 by inestlerode. #559.
Andres AG4bdbe092016-09-19 16:58:45 +01003293 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
3294 data structure until after error checks are successful. Found by
Simon Butcherb81496b2016-10-13 14:03:37 +01003295 subramanyam-c. #622
Andres AG821da842016-09-26 10:09:30 +01003296 * Fix documentation and implementation missmatch for function arguments of
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01003297 mbedtls_gcm_finish(). Found by cmiatpaar. #602
Simon Butcher4d69ecd2016-10-13 00:14:37 +01003298 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG5a87c932016-09-26 14:53:05 +01003299 * Fix potential byte overread when verifying malformed SERVER_HELLO in
3300 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Andres AG4b76aec2016-09-23 13:16:02 +01003301 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
Simon Butcher2bd0fba2016-10-13 16:29:56 +01003302 Found by subramanyam-c. #626
Simon Butcher99000142016-10-13 17:21:01 +01003303 * Fix compatibility issue with Internet Explorer client authentication,
3304 where the limited hash choices prevented the client from sending its
3305 certificate. Found by teumas. #513
Janos Follath240f1852016-10-14 15:23:21 +01003306 * Fix compilation without MBEDTLS_SELF_TEST enabled.
Simon Butchercf8c1f42016-09-02 21:29:39 +03003307
3308Changes
3309 * Extended test coverage of special cases, and added new timing test suite.
3310 * Removed self-tests from the basic-built-test.sh script, and added all
3311 missing self-tests to the test suites, to ensure self-tests are only
3312 executed once.
3313 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
3314 * Added support for a Yotta specific configuration file -
3315 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Simon Butcher5908bcc2016-09-04 15:12:09 +01003316 * Added optimization for code space for X.509/OID based on configured
Simon Butcheref8fa012016-10-16 00:44:08 +01003317 features. Contributed by Aviv Palivoda.
Andres AG788aa4a2016-09-14 14:32:09 +01003318 * Renamed source file library/net.c to library/net_sockets.c to avoid
3319 naming collision in projects which also have files with the common name
3320 net.c. For consistency, the corresponding header file, net.h, is marked as
3321 deprecated, and its contents moved to net_sockets.h.
Simon Butcher59bffa22016-10-13 15:55:56 +01003322 * Changed the strategy for X.509 certificate parsing and validation, to no
3323 longer disregard certificates with unrecognised fields.
Simon Butchercf8c1f42016-09-02 21:29:39 +03003324
Simon Butcher46125fb2016-06-27 19:43:55 +01003325= mbed TLS 2.3.0 branch released 2016-06-28
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01003326
Janos Follathcc4eba72016-02-10 16:25:55 +00003327Security
Janos Follathe43b81a2016-02-10 16:25:55 +00003328 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
Janos Follath3218b212016-02-10 16:14:10 +00003329 required by PKCS1 v2.2
Janos Follathe43b81a2016-02-10 16:25:55 +00003330 * Fix potential integer overflow to buffer overflow in
3331 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01003332 (not triggerable remotely in (D)TLS).
Hanno Becker01a0e072017-07-26 11:49:40 +01003333 * Fix a potential integer underflow to buffer overread in
Janos Follathbc247c92016-02-11 11:15:44 +00003334 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
3335 SSL/TLS.
Janos Follathcc4eba72016-02-10 16:25:55 +00003336
Simon Butcher3fe6cd32016-04-26 19:51:29 +01003337Features
3338 * Support for platform abstraction of the standard C library time()
3339 function.
3340
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01003341Bugfix
3342 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
3343 arguments where the same (in-place doubling). Found and fixed by Janos
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01003344 Follath. #309
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00003345 * Fix potential build failures related to the 'apidoc' target, introduced
3346 in the previous patch release. Found by Robert Scheck. #390 #391
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01003347 * Fix issue in Makefile that prevented building using armar. #386
Antonin Décimo36e89b52019-01-23 15:24:37 +01003348 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
Janos Follath4ae5c292016-02-10 11:27:43 +00003349 ECDSA was disabled in config.h . The leak didn't occur by default.
Simon Butcherf59e66b2016-03-01 20:26:16 +00003350 * Fix an issue that caused valid certificates to be rejected whenever an
3351 expired or not yet valid certificate was parsed before a valid certificate
3352 in the trusted certificate list.
Hanno Becker01a0e072017-07-26 11:49:40 +01003353 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follathcc0e49d2016-02-17 14:34:12 +00003354 buffer after DER certificates to be included in the raw representation.
Simon Butcher3f5c8752016-04-15 19:06:59 +01003355 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath1ed9f992016-03-18 11:45:44 +00003356 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
3357 dereference possible.
Janos Follath8a317052016-04-21 23:37:09 +01003358 * Fix issue that caused a crash if invalid curves were passed to
3359 mbedtls_ssl_conf_curves. #373
Simon Butcherf8935072016-04-29 00:05:32 +01003360 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Paul Bakker8f0e4c22016-05-12 16:38:27 +01003361 * Fix memory leaks in test framework
Paul Bakkerf8e37942016-05-13 10:50:41 +01003362 * Fix test in ssl-opt.sh that does not run properly with valgrind
Simon Butcher46125fb2016-06-27 19:43:55 +01003363 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01003364
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01003365Changes
3366 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
3367 don't use the optimized assembly for bignum multiplication. This removes
3368 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
Simon Butcherd7e9ad72016-04-25 16:07:12 +01003369 * Disabled SSLv3 in the default configuration.
Simon Butchera543d112016-04-26 12:51:37 +01003370 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
3371 Skalozub).
Janos Follathc6dab2b2016-05-23 14:27:02 +01003372 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
3373 ignored, as required by RFC6101.
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01003374
3375= mbed TLS 2.2.1 released 2016-01-05
3376
3377Security
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01003378 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01003379 allocate memory. Only used for certificate generation, not triggerable
Simon Butcher00923c12015-12-22 19:04:24 +00003380 remotely in SSL/TLS. Found by Rafał Przywara. #367
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01003381 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
3382 SLOTH attack on TLS 1.2 server authentication (other attacks from the
3383 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01003384 https://www.mitls.org/pages/attacks/SLOTH
Simon Butcher1285ab52016-01-01 21:42:47 +00003385
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01003386Bugfix
3387 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
3388 * Fix bug in certificate validation that caused valid chains to be rejected
3389 when the first intermediate certificate has pathLenConstraint=0. Found by
3390 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher207990d2015-12-16 01:51:30 +00003391 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Simon Butcher8254ed22015-11-04 11:04:00 +00003392 JayaraghavendranK. #372
Simon Butcher04799a42015-09-29 00:31:09 +01003393 * Fix suboptimal handling of unexpected records that caused interop issues
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01003394 with some peers over unreliable links. Avoid dropping an entire DTLS
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02003395 datagram if a single record in a datagram is unexpected, instead only
3396 drop the record and look at subsequent records (if any are present) in
3397 the same datagram. Found by jeannotlapin. #345
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02003398
3399= mbed TLS 2.2.0 released 2015-11-04
Simon Butcher59a8fa72015-11-03 23:09:28 +00003400
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02003401Security
3402 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
3403 once and some allocation fails. Cannot be forced remotely. Found by Guido
Simon Butcher59a8fa72015-11-03 23:09:28 +00003404 Vranken, Intelworks.
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01003405 * Fix potential heap corruption on Windows when
3406 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
3407 triggered remotely. Found by Guido Vranken, Intelworks.
3408 * Fix potential buffer overflow in some asn1_write_xxx() functions.
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02003409 Cannot be triggered remotely unless you create X.509 certificates based
3410 on untrusted input or write keys of untrusted origin. Found by Guido
3411 Vranken, Intelworks.
3412 * The X509 max_pathlen constraint was not enforced on intermediate
3413 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02003414 Janos Follath. #280 and #319
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01003415
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01003416Features
3417 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
3418 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01003419 * Added a key extraction callback to accees the master secret and key
3420 block. (Potential uses include EAP-TLS and Thread.)
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02003421
3422Bugfix
Simon Butcher62aab152015-10-27 16:05:34 +00003423 * Self-signed certificates were not excluded from pathlen counting,
3424 resulting in some valid X.509 being incorrectly rejected. Found and fix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02003425 provided by Janos Follath. #319
3426 * Fix build error with configurations where ECDHE-PSK is the only key
3427 exchange. Found and fix provided by Chris Hammond. #270
Simon Butcher5f7c34b2015-10-27 15:14:55 +00003428 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02003429 ECHD-ECDSA if the only key exchange. Multiple reports. #310
3430 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02003431 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09003432 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
3433 size/curve against the profile. Before that, there was no way to set a
3434 minimum key size for end-entity certificates with RSA keys. Found by
Simon Butcher5f7c34b2015-10-27 15:14:55 +00003435 Matthew Page of Scannex Electronics Ltd.
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01003436 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
3437 Found by Kurt Danielson. #292
3438 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01003439 * Fix bug in ASN.1 encoding of booleans that caused generated CA
3440 certificates to be rejected by some applications, including OS X
3441 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcher04799a42015-09-29 00:31:09 +01003442
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01003443Changes
Simon Butcherc48b66b2015-10-05 10:18:17 +01003444 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
3445 or -1.
Simon Butcher5b8d1d62015-10-04 22:06:51 +01003446
3447= mbed TLS 2.1.2 released 2015-10-06
Simon Butcherc48b66b2015-10-05 10:18:17 +01003448
3449Security
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02003450 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
3451 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01003452 Intelworks.
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02003453 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
Simon Butcherc48b66b2015-10-05 10:18:17 +01003454 once in the same handhake and mbedtls_ssl_conf_psk() was used.
3455 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
3456 remotely.
3457 * Fix stack buffer overflow in pkcs12 decryption (used by
Simon Butchera45aa132015-10-05 00:26:36 +01003458 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
Simon Butcherc48b66b2015-10-05 10:18:17 +01003459 Found by Guido Vranken, Intelworks. Not triggerable remotely.
3460 * Fix potential buffer overflow in mbedtls_mpi_read_string().
3461 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
3462 of TLS, but might be in other uses. On 32 bit machines, requires reading a
3463 string of close to or larger than 1GB to exploit; on 64 bit machines, would
3464 require reading a string of close to or larger than 2^62 bytes.
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02003465 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Simon Butcherfec73a82015-10-05 10:40:31 +01003466 on crafted PEM input data. Found and fix provided by Guido Vranken,
3467 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02003468 accept PEM data from an untrusted source.
3469 * Fix possible heap buffer overflow in base64_encoded() when the input
3470 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Simon Butcher475cf0a2015-10-05 11:57:54 +01003471 Intelworks. Not trigerrable remotely in TLS.
Simon Butcher04799a42015-09-29 00:31:09 +01003472 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01003473 the same mbedtls_ssl_config object and memory allocation fails. Found by
3474 Guido Vranken, Intelworks. Cannot be forced remotely.
3475 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher7776fc32015-10-05 15:44:18 +01003476 authentication against a crafted CA cert. Cannot be triggered remotely
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01003477 unless you allow third parties to pick trust CAs for client auth.
Simon Butcher04799a42015-09-29 00:31:09 +01003478 Found by Guido Vranken, Intelworks.
3479
3480Bugfix
Simon Butchera12e3c02015-10-01 01:59:33 +01003481 * Fix compile error in net.c with musl libc. Found and patch provided by
3482 zhasha (#278).
Simon Butcher04799a42015-09-29 00:31:09 +01003483 * Fix macroization of 'inline' keyword when building as C++. (#279)
Simon Butcher5624ec82015-09-29 01:06:06 +01003484
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003485Changes
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02003486 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
3487 domain names are compliant with RFC 1035.
3488 * Fixed paths for check_config.h in example config files. (Found by bachp)
3489 (#291)
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003490
3491= mbed TLS 2.1.1 released 2015-09-17
Simon Butcher5b8d1d62015-10-04 22:06:51 +01003492
3493Security
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003494 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Simon Butchera1a11282015-09-14 21:30:40 +01003495 signatures. (Found by Florian Weimer, Red Hat.)
3496 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02003497 * Fix possible client-side NULL pointer dereference (read) when the client
3498 tries to continue the handshake after it failed (a misuse of the API).
3499 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
Simon Butcherd69f14b2015-09-11 20:00:20 +01003500 afl-fuzz.)
3501
3502Bugfix
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02003503 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
3504 * Fix off-by-one error in parsing Supported Point Format extension that
3505 caused some handshakes to fail.
3506
3507Changes
3508 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
3509 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Simon Butcherd69f14b2015-09-11 20:00:20 +01003510 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003511 connection, if cookie verification is available
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02003512 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003513 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02003514 detected and mbedtls_ssl_read() will return
3515 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003516 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003517
3518= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02003519
3520Features
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02003521 * Added support for yotta as a build system.
3522 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003523
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02003524Bugfix
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003525 * Fix segfault in the benchmark program when benchmarking DHM.
3526 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02003527 Leisink).
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02003528 * Fix bug when parsing a ServerHello without extensions (found by David
3529 Sears).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02003530 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
3531 (found by Benoit Lecocq).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02003532 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
3533 installed (found by Rawi666).
3534 * Fix compile error with armcc 5 with --gnu option.
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02003535 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02003536 (found by robotanarchy) (#232).
3537 * Fix bug in Makefile that prevented from installing without building the
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02003538 tests (found by robotanarchy) (#232).
3539 * Fix missing -static-libgcc when building shared libraries for Windows
3540 with make.
Simon Butcher52754592015-09-03 13:06:01 +01003541 * Fix link error when building shared libraries for Windows with make.
3542 * Fix error when loading libmbedtls.so.
3543 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
3544 be always used (found by dcb314) (#235)
3545 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
3546 result trying to unlock an unlocked mutex on invalid input (found by
3547 Fredrik Axelsson) (#257)
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003548 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02003549 * Fix memory corruption on client with overlong PSK identity, around
3550 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003551 Aleksandrs Saveljevs) (#238)
3552 * Fix unused function warning when using MBEDTLS_MDx_ALT or
3553 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02003554 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
3555
3556Changes
Simon Butcher52754592015-09-03 13:06:01 +01003557 * The PEM parser now accepts a trailing space at end of lines (#226).
3558 * It is now possible to #include a user-provided configuration file at the
3559 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
3560 compiler's command line.
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003561 * When verifying a certificate chain, if an intermediate certificate is
Paul Bakker4cb87f42015-07-10 14:09:43 +01003562 trusted, no later cert is checked. (suggested by hannes-landeholm)
Paul Bakker9c5898f2015-02-16 16:18:33 +01003563 (#220).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003564 * Prepend a "thread identifier" to debug messages (issue pointed out by
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003565 Hugo Leisink) (#210).
3566 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
3567 length.
3568
3569= mbed TLS 2.0.0 released 2015-07-13
3570
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003571Features
3572 * Support for DTLS 1.0 and 1.2 (RFC 6347).
3573 * Ability to override core functions from MDx, SHAx, AES and DES modules
3574 with custom implementation (eg hardware accelerated), complementing the
3575 ability to override the whole module.
3576 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02003577 preserve forward secrecy, and allows sharing across multiple contexts.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003578 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02003579 which algorithms and key sizes (curves for ECDSA) are acceptable.
3580 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003581 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003582 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003583 parameters.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003584
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02003585API Changes
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02003586 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
3587 You now need to link to all of them if you use TLS for example.
3588 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003589 Some names have been further changed to make them more consistent.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003590 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003591 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02003592 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003593 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003594 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003595 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02003596 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003597 * The following _init() functions that could return errors have
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02003598 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003599 should generally be the first function called on this context after init:
3600 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003601 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
3602 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003603 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003604 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
Tillmann Karras588ad502015-09-25 04:27:22 +02003605 Note that for mbedtls_ssl_setup(), you need to be done setting up the
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003606 ssl_config structure before calling it.
3607 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
3608 ssl_set_session() and ssl_set_client_transport_id(), plus
3609 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003610 (see rename.pl and compat-1.3.h above) and their first argument's type
3611 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003612 * ssl_set_bio() changed signature (contexts merged, order switched, one
3613 additional callback for read-with-timeout).
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003614 * The following functions have been introduced and must be used in callback
3615 implementations (SNI, PSK) instead of their *conf counterparts:
3616 mbedtls_ssl_set_hs_own_cert()
3617 mbedtls_ssl_set_hs_ca_chain()
3618 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003619 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01003620 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003621 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01003622 pointer, parameters reordered).
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003623 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
3624 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02003625 * The SSL debug callback gained two new arguments (file name, line number).
3626 * Debug modes were removed.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003627 * mbedtls_ssl_conf_truncated_hmac() now returns void.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003628 * mbedtls_memory_buffer_alloc_init() now returns void.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003629 * X.509 verification flags are now an uint32_t. Affect the signature of:
3630 mbedtls_ssl_get_verify_result()
3631 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003632 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003633 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01003634 * The following functions changed prototype to avoid an in-out length
3635 parameter:
3636 mbedtls_base64_encode()
3637 mbedtls_base64_decode()
3638 mbedtls_mpi_write_string()
3639 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02003640 * In the NET module, all "int" and "int *" arguments for file descriptors
3641 changed type to "mbedtls_net_context *".
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02003642 * net_accept() gained new arguments for the size of the client_ip buffer.
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02003643 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
3644 return void.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003645 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02003646 ecdsa_write_signature_det() was deprecated.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02003647 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02003648 * Last argument of x509_crt_check_key_usage() and
3649 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01003650 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
3651 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
3652 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01003653 strings; use the new *_len variables instead of strlen().
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02003654 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
3655 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
3656 length parameter to include the terminating null byte for PEM input.
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00003657 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02003658 * calloc() is now used instead of malloc() everywhere. API of platform
3659 layer and the memory_buffer_alloc module changed accordingly.
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02003660 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003661 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
3662 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02003663 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
3664 in config.h
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003665 * net_connect() and net_bind() have a new 'proto' argument to choose
3666 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02003667 Their 'port' argument type is changed to a string.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003668 * Some constness fixes
3669
3670Removals
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003671 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02003672 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
3673 mbedtls_ecp_muladd().
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02003674 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
3675 (use generic functions from md.h)
3676 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02003677 waiting function.
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02003678 * Removed test DHM parameters from the test certs module.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003679 * Removed the PBKDF2 module (use PKCS5).
3680 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
3681 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
3682 * Removed openssl.h (very partial OpenSSL compatibility layer).
3683 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
3684 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
3685 been removed (compiler is required to support 32-bit operations).
3686 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
3687 * Removed test program o_p_test, the script compat.sh does more.
3688 * Removed test program ssl_test, superseded by ssl-opt.sh.
3689 * Removed helper script active-config.pl
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003690
3691New deprecations
3692 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
3693 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003694
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003695Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003696 * Renamed a few headers to include _internal in the name. Those headers are
3697 not supposed to be included by users.
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02003698 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
3699 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003700 * Changed cipher_base_t into an opaque structure.
3701 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01003702 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003703 * Removed r and s from ecdsa_context
3704 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003705
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003706Default behavior changes
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02003707 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003708 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
3709 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003710 * Support for receiving SSLv2 ClientHello is now disabled by default at
3711 compile time.
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01003712 * The default authmode for SSL/TLS clients is now REQUIRED.
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02003713 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
3714 enabled in the default configuration, this is only noticeable if using a
3715 custom config.h
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01003716 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003717 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
3718 chain verification.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01003719 * Negotiation of truncated HMAC is now disabled by default on server too.
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02003720 * The following functions are now case-sensitive:
3721 mbedtls_cipher_info_from_string()
3722 mbedtls_ecp_curve_info_from_name()
3723 mbedtls_md_info_from_string()
3724 mbedtls_ssl_ciphersuite_from_string()
3725 mbedtls_version_check_feature()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003726
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003727Requirement changes
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02003728 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02003729 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01003730 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003731
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003732API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003733 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
3734 new prototype, and mbedtls_ssl_set_read_timeout().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003735 * The following functions now return void:
3736 mbedtls_ssl_conf_transport()
3737 mbedtls_ssl_conf_max_version()
3738 mbedtls_ssl_conf_min_version()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02003739 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
3740 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
3741 an example implementation, see mbedtls_timing_delay_context and
3742 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02003743 * With UDP sockets, it is no longer necessary to call net_bind() again
3744 after a successful net_accept().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003745
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003746Changes
3747 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
3748 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003749 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
3750 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003751
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003752= mbed TLS 1.3 branch
3753
3754Security
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02003755 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01003756 extendedKeyUsage on the leaf certificate was lost (results not accessible
3757 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02003758 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3759 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003760
3761Features
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02003762 * Improve ECC performance by using more efficient doubling formulas
3763 (contributed by Peter Dettman).
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02003764 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02003765 * Add support for reading DH parameters with privateValueLength included
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02003766 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01003767 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
3768 * Add support for id-at-uniqueIdentifier in X.509 names.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003769 * Add support for overriding snprintf() (except on Windows) and exit() in
3770 the platform layer.
3771 * Add an option to use macros instead of function pointers in the platform
3772 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00003773 * Improved Makefiles for Windows targets by fixing library targets and making
3774 cross-compilation easier (thanks to Alon Bar-Lev).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00003775 * The benchmark program also prints heap usage for public-key primitives
3776 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
3777 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
3778 speed and RAM (heap only for now) usage.
3779 * New script memory.sh helps measuring the ROM and RAM requirements of two
3780 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003781 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003782 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003783 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003784 errors on use of deprecated functions.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003785
3786Bugfix
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01003787 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01003788 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01003789 * Fix bug in entropy.c when THREADING_C is also enabled that caused
3790 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02003791 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
3792 once on the same context.
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02003793 * Fix bug in ssl_mail_client when password is longer that username (found
3794 by Bruno Pape).
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02003795 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
3796 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02003797 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
3798 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02003799 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
3800 doing it at runtime (using uname) rather that compile time.
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02003801 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02003802 * Fix potential NULL pointer dereference (not trigerrable remotely) when
3803 ssl_write() is called before the handshake is finished (introduced in
3804 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02003805 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
3806 rejected.
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01003807 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01003808 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00003809 * Fix hardclock() (only used in the benchmarking program) with some
3810 versions of mingw64 (found by kxjhlele).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00003811 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00003812 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3813 platforms.
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00003814 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00003815 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
3816 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
3817 in 1.3.10).
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00003818 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02003819 * Add missing dependency on SHA-256 in some x509 programs (reported by
3820 Gergely Budai).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02003821 * Fix bug related to ssl_set_curves(): the client didn't check that the
3822 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003823
3824Changes
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02003825 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
3826 * Remove potential sources of timing variations (some contributed by Pascal
3827 Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02003828 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02003829 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003830 * compat-1.2.h and openssl.h are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003831 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00003832 more flexible (warning: OFLAGS is not used any more) (see the README)
3833 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003834 * ssl_set_own_cert() no longer calls pk_check_pair() since the
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00003835 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00003836 * Move from SHA-1 to SHA-256 in example programs using signatures
3837 (suggested by Thorsten Mühlfelder).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00003838 * Remove some unneeded inclusions of header files from the standard library
3839 "minimize" others (eg use stddef.h if only size_t is needed).
3840 * Change #include lines in test files to use double quotes instead of angle
3841 brackets for uniformity with the rest of the code.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003842 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02003843
Paul Bakkerdaae3b72015-02-08 15:49:54 +01003844= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003845Security
3846 * NULL pointer dereference in the buffer-based allocator when the buffer is
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00003847 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003848 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
3849 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003850 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003851 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003852 client certificate) (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003853 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003854 (TLS server is not affected if it doesn't ask for a client certificate)
3855 (found using Codenomicon Defensics).
3856 * Fix potential stack overflow while parsing crafted X.509 certificates
3857 (TLS server is not affected if it doesn't ask for a client certificate)
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003858 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00003859 * Fix timing difference that could theoretically lead to a
3860 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
3861 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003862
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003863Features
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003864 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
3865 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
3866 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003867 * Add function pk_check_pair() to test if public and private keys match.
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01003868 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01003869 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3870 length of an X.509 verification chain.
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01003871 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01003872 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Paul Bakker6152b022015-04-14 15:00:09 +02003873 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01003874 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01003875 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
3876 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003877 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01003878 while using the default ciphersuite list.
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00003879 * Added new error codes and debug messages about selection of
3880 ciphersuite/certificate.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003881
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003882Bugfix
3883 * Stack buffer overflow if ctr_drbg_update() is called with too large
3884 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01003885 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
3886 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003887 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
3888 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003889 by Julian Ospald).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01003890 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01003891 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
3892 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00003893 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3894 Peter Vaskovic).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00003895 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00003896 * ssl_get_verify_result() now works even if the handshake was aborted due
3897 to a failed verification (found by Fredrik Axelsson).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00003898 * Skip writing and parsing signature_algorithm extension if none of the
3899 key exchanges enabled needs certificates. This fixes a possible interop
3900 issue with some servers when a zero-length extension was sent. (Reported
3901 by Peter Dettman.)
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00003902 * On a 0-length input, base64_encode() did not correctly set output length
3903 (found by Hendrik van den Boogaard).
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003904
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01003905Changes
3906 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
3907 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01003908 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003909 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01003910 * Forbid repeated extensions in X.509 certificates.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01003911 * debug_print_buf() now prints a text view in addition to hexadecimal.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01003912 * A specific error is now returned when there are ciphersuites in common
3913 but none of them is usable due to external factors such as no certificate
Paul Bakkere522d0f2015-01-14 16:12:48 +01003914 with a suitable (extended)KeyUsage or curve or no PSK set.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003915 * It is now possible to disable negotiation of truncated HMAC server-side
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01003916 at runtime with ssl_set_truncated_hmac().
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01003917 * Example programs for SSL client and server now disable SSLv3 by default.
3918 * Example programs for SSL client and server now disable RC4 by default.
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00003919 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003920
Paul Bakker9eac4f72014-10-20 13:56:15 +02003921= PolarSSL 1.3.9 released 2014-10-20
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003922Security
3923 * Lowest common hash was selected from signature_algorithms extension in
3924 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003925 * Remotely-triggerable memory leak when parsing some X.509 certificates
Paul Bakkerb082bb52014-10-20 13:37:51 +02003926 (server is not affected if it doesn't ask for a client certificate)
3927 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02003928 * Remotely-triggerable memory leak when parsing crafted ClientHello
Paul Bakkerb082bb52014-10-20 13:37:51 +02003929 (not affected if ECC support was compiled out) (found using Codenomicon
3930 Defensics).
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003931
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003932Bugfix
3933 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02003934 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02003935 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02003936 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02003937 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02003938 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
3939 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02003940 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003941 * ssl_read() could return non-application data records on server while
3942 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02003943 * Server-initiated renegotiation would fail with non-blocking I/O if the
3944 write callback returned WANT_WRITE when requesting renegotiation.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02003945 * ssl_close_notify() could send more than one message in some circumstances
3946 with non-blocking I/O.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02003947 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Paul Bakker5a5fa922014-09-26 14:53:04 +02003948 * x509_crt_parse() did not increase total_failed on PEM error
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02003949 * Fix compile error with armcc in mpi_is_prime()
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02003950 * Fix potential bad read in parsing ServerHello (found by Adrien
3951 Vialletelle).
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003952
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003953Changes
3954 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
3955 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02003956 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
3957 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02003958 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
3959 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003960 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3961 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02003962 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
3963 RSA keys.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02003964 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003965 * X.509 certificates with more than one AttributeTypeAndValue per
3966 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003967
Paul Bakker1910aa72014-07-11 11:28:56 +02003968= PolarSSL 1.3.8 released 2014-07-11
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02003969Security
3970 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3971 It was possible to crash the server (and client) using crafted messages
3972 when a GCM suite was chosen.
3973
Paul Bakkerc6ece492014-05-22 15:45:03 +02003974Features
3975 * Add CCM module and cipher mode to Cipher Layer
3976 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02003977 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
3978 modules (certificates, CRLs and CSRs).
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02003979 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02003980 * Add example config.h for PSK with CCM, optimized for low RAM usage.
3981 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02003982 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
3983 from the default list (inactive by default).
Paul Bakker23647b42014-07-04 15:00:12 +02003984 * Add server-side enforcement of sent renegotiation requests
3985 (ssl_set_renegotiation_enforced())
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02003986 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
3987 ciphersuites to use and save some memory if the list is small.
Paul Bakkerc6ece492014-05-22 15:45:03 +02003988
Paul Bakker863989b2014-06-12 21:49:01 +02003989Changes
3990 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
3991 required on some platforms (e.g. OpenBSD)
Paul Bakker34617722014-06-13 17:20:13 +02003992 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3993 against unwanted compiler optimizations
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02003994 * md_list() now returns hashes strongest first
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02003995 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
3996 strongest offered by client.
Paul Bakker28476e22014-07-01 15:59:04 +02003997 * All public contexts have _init() and _free() functions now for simpler
3998 usage pattern
Paul Bakker863989b2014-06-12 21:49:01 +02003999
Paul Bakker5593f7c2014-05-06 10:29:28 +02004000Bugfix
4001 * Fix in debug_print_msg()
Paul Bakker1ebc0c52014-05-22 15:47:58 +02004002 * Enforce alignment in the buffer allocator even if buffer is not aligned
Paul Bakkerdff31392014-05-22 15:06:41 +02004003 * Remove less-than-zero checks on unsigned numbers
Paul Bakker0f651c72014-05-22 15:12:19 +02004004 * Stricter check on SSL ClientHello internal sizes compared to actual packet
4005 size (found by TrustInSoft)
Paul Bakker49033ba2014-06-12 21:46:13 +02004006 * Fix WSAStartup() return value check (found by Peter Vaskovic)
4007 * Other minor issues (found by Peter Vaskovic)
4008 * Fix symlink command for cross compiling with CMake (found by Andre
4009 Heinecke)
Paul Bakker3c38f292014-06-13 17:37:46 +02004010 * Fix DER output of gen_key app (found by Gergely Budai)
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02004011 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02004012 use with some ciphersuites and versions (RC4 in all versions, CBC with
4013 versions < TLS 1.1).
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02004014 * Very large records using more than 224 bytes of padding were incorrectly
4015 rejected with CBC-based ciphersuites and TLS >= 1.1
4016 * Very large records using less padding could cause a buffer overread of up
4017 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02004018 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
4019 been removed in 1.3.6.)
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02004020 * Restore ability to locally trust a self-signed cert that is not a proper
4021 CA for use as an end entity certificate. (This had been removed in
4022 1.3.6.)
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07004023 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02004024 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
4025 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02004026 * Fix off-by-one error in parsing Supported Point Format extension that
4027 caused some handshakes to fail.
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02004028 * Fix possible miscomputation of the premaster secret with DHE-PSK key
4029 exchange that caused some handshakes to fail with other implementations.
4030 (Failure rate <= 1/255 with common DHM moduli.)
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02004031 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakkerd5983182014-07-04 13:50:31 +02004032 * Fix base64_decode() to return and check length correctly (in case of
4033 tight buffers)
Paul Bakker6c343d72014-07-10 14:36:19 +02004034 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
4035 by Hui Dong)
Paul Bakker5593f7c2014-05-06 10:29:28 +02004036
Paul Bakker47431b62014-05-02 13:27:13 +02004037= PolarSSL 1.3.7 released on 2014-05-02
Paul Bakkereaebbd52014-04-25 15:04:14 +02004038Features
Paul Bakkerc73079a2014-04-25 16:34:30 +02004039 * debug_set_log_mode() added to determine raw or full logging
4040 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker0f90d7d2014-04-30 11:49:44 +02004041 * version_check_feature() added to check for compile-time options at
4042 run-time
Paul Bakker92478c32014-04-25 15:18:34 +02004043
Paul Bakker088c5c52014-04-25 11:11:10 +02004044Changes
4045 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
4046 checked and filled in the relevant module headers
Paul Bakker92478c32014-04-25 15:18:34 +02004047 * Debug module only outputs full lines instead of parts
Paul Bakker63844402014-04-30 15:34:12 +02004048 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02004049 * AES-NI now compiles with "old" assemblers too
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02004050 * Ciphersuites based on RC4 now have the lowest priority by default
Paul Bakker088c5c52014-04-25 11:11:10 +02004051
Paul Bakkere92f73d2014-04-18 14:08:26 +02004052Bugfix
4053 * Only iterate over actual certificates in ssl_write_certificate_request()
4054 (found by Matthew Page)
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02004055 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
4056 Karger)
Paul Bakkerfdba4682014-04-25 11:48:35 +02004057 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakker61885c72014-04-25 12:59:03 +02004058 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
4059 ciphersuites, for full SSL frames of data.
Paul Bakkera7036632014-04-30 10:15:38 +02004060 * Improve interoperability by not writing extension length in ClientHello /
4061 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker24f37cc2014-04-30 13:33:35 +02004062 * rsa_check_pubkey() now allows an E up to N
Paul Bakkerf96f7b62014-04-30 16:02:38 +02004063 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Paul Bakker33dc46b2014-04-30 16:11:39 +02004064 * mpi_fill_random() was creating numbers larger than requested on
4065 big-endian platform when size was not an integer number of limbs
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02004066 * Fix dependencies issues in X.509 test suite.
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02004067 * Some parts of ssl_tls.c were compiled even when the module was disabled.
Markus Pfeiffera26a0052014-04-22 20:16:15 +00004068 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Barry K. Nathancf975f52014-04-23 17:40:25 -07004069 * Fix detection of Clang on some Apple platforms with CMake
4070 (found by Barry K. Nathan)
Paul Bakkere92f73d2014-04-18 14:08:26 +02004071
Paul Bakker784b04f2014-04-11 15:33:59 +02004072= PolarSSL 1.3.6 released on 2014-04-11
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01004073
Paul Bakker27e36d32014-04-08 12:33:37 +02004074Features
4075 * Support for the ALPN SSL extension
Paul Bakker1cfc4582014-04-09 15:25:13 +02004076 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02004077 * Enable verification of the keyUsage extension for CA and leaf
Paul Bakker59366212014-04-09 15:55:20 +02004078 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02004079 * Enable verification of the extendedKeyUsage extension
4080 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02004081
Paul Bakker4984d3c2014-04-04 15:39:37 +02004082Changes
4083 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02004084 * pk_verify() now returns a specific error code when the signature is valid
4085 but shorter than the supplied length.
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02004086 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02004087 * Reject certificates with times not in UTC, per RFC 5280.
Paul Bakker4984d3c2014-04-04 15:39:37 +02004088
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02004089Security
4090 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
4091 (Found by Watson Ladd.)
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02004092 * The notAfter date of some certificates was no longer checked since 1.3.5.
4093 This affects certificates in the user-supplied chain except the top
4094 certificate. If the user-supplied chain contains only one certificates,
4095 it is not affected (ie, its notAfter date is properly checked).
Paul Bakker4224bc02014-04-08 14:36:50 +02004096 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
4097 TrustInSoft)
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02004098
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01004099Bugfix
4100 * The length of various ClientKeyExchange messages was not properly checked.
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01004101 * Some example server programs were not sending the close_notify alert.
Paul Bakker75a28602014-03-31 12:08:17 +02004102 * Potential memory leak in mpi_exp_mod() when error occurs during
4103 calculation of RR.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02004104 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02004105 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
4106 Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02004107 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
4108 (found by Gergely Budai)
Shuo Chen95a0d112014-04-04 21:04:40 -07004109 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
4110 Shuo Chen).
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01004111 * oid_get_numeric_string() used to truncate the output without returning an
4112 error if the output buffer was just 1 byte too small.
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01004113 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02004114 * Calling pk_debug() on an RSA-alt key would segfault.
4115 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
Paul Bakker16300582014-04-11 13:28:43 +02004116 * Potential buffer overwrite in pem_write_buffer() because of low length
4117 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard78848372014-04-10 17:45:07 +02004118 * EC curves constants, which should be only in ROM since 1.3.3, were also
4119 stored in RAM due to missing 'const's (found by Gergely Budai).
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01004120
Paul Bakker96d52652014-03-26 16:55:50 +01004121= PolarSSL 1.3.5 released on 2014-03-26
Paul Bakker5fb8efe2014-02-05 15:54:34 +01004122Features
4123 * HMAC-DRBG as a separate module
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01004124 * Option to set the Curve preference order (disabled by default)
Paul Bakker6a28e722014-02-06 13:41:55 +01004125 * Single Platform compatilibity layer (for memory / printf / fprintf)
Paul Bakkerf2561b32014-02-06 15:11:55 +01004126 * Ability to provide alternate timing implementation
Paul Bakker2ceda572014-02-06 15:55:25 +01004127 * Ability to force the entropy module to use SHA-256 as its basis
4128 (POLARSSL_ENTROPY_FORCE_SHA256)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01004129 * Testing script ssl-opt.sh added for testing 'live' ssl option
4130 interoperability against OpenSSL and PolarSSL
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01004131 * Support for reading EC keys that use SpecifiedECDomain in some cases.
Paul Bakker66ff70d2014-03-26 11:54:05 +01004132 * Entropy module now supports seed writing and reading
Paul Bakker6a28e722014-02-06 13:41:55 +01004133
4134Changes
4135 * Deprecated the Memory layer
Paul Bakker47703a02014-02-06 15:01:20 +01004136 * entropy_add_source(), entropy_update_manual() and entropy_gather()
4137 now thread-safe if POLARSSL_THREADING_C defined
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01004138 * Improvements to the CMake build system, contributed by Julian Ospald.
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01004139 * Work around a bug of the version of Clang shipped by Apple with Mavericks
4140 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01004141 * Revamped the compat.sh interoperatibility script to include support for
4142 testing against GnuTLS
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01004143 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Paul Bakker674e0b02014-03-26 13:26:52 +01004144 * Improvements to tests/Makefile, contributed by Oden Eriksson.
Paul Bakker5fb8efe2014-02-05 15:54:34 +01004145
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01004146Security
4147 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01004148 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01004149 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01004150 * Check notBefore timestamp of certificates and CRLs from the future.
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01004151 * Forbid sequence number wrapping
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01004152 * Fixed possible buffer overflow with overlong PSK
Paul Bakker91c61bc2014-03-26 14:06:55 +01004153 * Possible remotely-triggered out-of-bounds memory access fixed (found by
4154 TrustInSoft)
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01004155
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01004156Bugfix
4157 * ecp_gen_keypair() does more tries to prevent failure because of
4158 statistics
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01004159 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakkercd6d69a2014-02-06 15:43:21 +01004160 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01004161 * Fixed version-major intolerance in server
Paul Bakker3d52ab72014-03-07 10:33:55 +01004162 * Fixed CMake symlinking on out-of-source builds
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01004163 * Fixed dependency issues in test suite
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01004164 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Alex Wilson73491422014-03-06 00:04:09 +10004165 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
4166 Alex Wilson.)
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01004167 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
4168 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01004169 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01004170 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01004171 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01004172 client certificate.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01004173 * ssl_srv was leaking memory when client presented a timed out ticket
Paul Bakkerb0695ce2014-03-17 13:42:23 +01004174 containing a client certificate
Paul Bakker3d6504a2014-03-17 13:41:51 +01004175 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
4176 out_ctr failed
Paul Bakker77f4f392014-03-26 15:28:55 +01004177 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
4178 of one of them failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01004179 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker5fff23b2014-03-26 15:34:54 +01004180 * x509_get_current_time() uses localtime_r() to prevent thread issues
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01004181
Paul Bakker2aca2412014-01-27 11:49:46 +01004182= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker3eb96732014-01-22 13:08:19 +01004183Features
Paul Bakker0ac99ca2014-01-22 13:08:44 +01004184 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakker5862eee2014-01-22 14:18:03 +01004185 * Support for RIPEMD-160
Paul Bakker556efba2014-01-24 15:38:12 +01004186 * Support for AES CFB8 mode
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01004187 * Support for deterministic ECDSA (RFC 6979)
Paul Bakker3eb96732014-01-22 13:08:19 +01004188
4189Bugfix
4190 * Potential memory leak in bignum_selftest()
4191 * Replaced expired test certificate
Paul Bakkerd75ba402014-01-24 16:11:17 +01004192 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakkerb84582b2014-01-27 12:23:43 +01004193 * net module handles timeouts on blocking sockets better (found by Tilman
4194 Sauerbeck)
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01004195 * Assembly format fixes in bn_mul.h
4196
4197Security
Paul Bakkerb84582b2014-01-27 12:23:43 +01004198 * Missing MPI_CHK calls added around unguarded mpi calls (found by
4199 TrustInSoft)
Paul Bakker3eb96732014-01-22 13:08:19 +01004200
Paul Bakker5bc07a32013-12-31 10:57:44 +01004201= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker014f1432013-12-02 14:54:01 +01004202Features
4203 * EC key generation support in gen_key app
Paul Bakker9dc53a92013-12-02 14:55:28 +01004204 * Support for adhering to client ciphersuite order preference
4205 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker48d78a52013-12-05 16:11:38 +01004206 * Support for Curve25519
Paul Bakkerfdf94692013-12-17 13:09:31 +01004207 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakker5a607d22013-12-17 14:33:42 +01004208 * Support for IPv6 in the NET module
Paul Bakker23116fd2013-12-30 14:09:47 +01004209 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakkerf9c49532013-12-19 15:40:58 +01004210 * SSL Pthread-based server example added (ssl_pthread_server)
Paul Bakker014f1432013-12-02 14:54:01 +01004211
Paul Bakker7aa03752013-11-26 17:37:31 +01004212Changes
4213 * gen_prime() speedup
4214 * Speedup of ECP multiplication operation
4215 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerc3d0d072013-12-02 14:50:49 +01004216 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker4040d7e2013-12-02 14:52:57 +01004217 * More constant-time checks in the RSA module
Paul Bakkerb14817d2013-12-02 22:03:23 +01004218 * Split off curves from ecp.c into ecp_curves.c
Paul Bakker5ab68ba2013-12-17 13:10:48 +01004219 * Curves are now stored fully in ROM
Paul Bakkerc7387912013-12-31 10:32:50 +01004220 * Memory usage optimizations in ECP module
Paul Bakkera8fd3e32013-12-31 11:54:08 +01004221 * Removed POLARSSL_THREADING_DUMMY
Paul Bakker7aa03752013-11-26 17:37:31 +01004222
Paul Bakkerf2b4d862013-11-20 17:23:53 +01004223Bugfix
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01004224 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakkerf2b4d862013-11-20 17:23:53 +01004225 * Fixed X.509 hostname comparison (with non-regular characters)
Paul Bakkera9a028e2013-11-21 17:31:06 +01004226 * SSL now gracefully handles missing RNG
Paul Bakker7aa03752013-11-26 17:37:31 +01004227 * Missing defines / cases for RSA_PSK key exchange
4228 * crypt_and_hash app checks MAC before final decryption
Paul Bakker6f0636a2013-12-16 15:24:05 +01004229 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakkerf70fe812013-12-16 16:43:10 +01004230 * Memory leak in benchmark application
Paul Bakker1a56fc92013-12-19 13:51:24 +01004231 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6ea1a952013-12-31 11:16:03 +01004232 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
4233 TrustInSoft)
Paul Bakker6992eb72013-12-31 11:35:16 +01004234 * Fixed potential overflow in certificate size verification in
4235 ssl_write_certificate() (found by TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01004236
Paul Bakker956c9e02013-12-19 14:42:28 +01004237Security
4238 * Possible remotely-triggered out-of-bounds memory access fixed (found by
4239 TrustInSoft)
4240
Paul Bakkerf4dc1862013-11-04 17:29:42 +01004241= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker08bb1872013-10-28 14:03:26 +01004242Features
4243 * PK tests added to test framework
Paul Bakker3f917e22013-10-28 14:16:59 +01004244 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker16421222013-10-28 14:37:09 +01004245 * Support for Camellia-GCM mode and ciphersuites
Paul Bakker08bb1872013-10-28 14:03:26 +01004246
Paul Bakker7bc745b2013-10-28 14:39:49 +01004247Changes
4248 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01004249 * Value comparisons in SSL layer are now constant-time
Paul Bakker7b0be682013-10-29 14:24:37 +01004250 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakkere1121b62013-10-31 14:37:37 +01004251 * SSL Renegotiation was refactored
Paul Bakker7bc745b2013-10-28 14:39:49 +01004252
Paul Bakker677377f2013-10-28 12:54:26 +01004253Bugfix
Paul Bakker16421222013-10-28 14:37:09 +01004254 * More stringent checks in cipher layer
Paul Bakker677377f2013-10-28 12:54:26 +01004255 * Server does not send out extensions not advertised by client
Paul Bakker45a2c8d2013-10-28 12:57:08 +01004256 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker68037da2013-10-28 14:02:40 +01004257 * Misc fixes and additions to dependency checks
Paul Bakker50dc8502013-10-28 21:19:10 +01004258 * Const correctness
Paul Bakker93c6aa42013-10-28 22:28:09 +01004259 * cert_write with selfsign should use issuer_name as subject_name
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01004260 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakkerfa6a6202013-10-28 18:48:30 +01004261 * Defines to handle UEFI environment under MSVC
Paul Bakkere1121b62013-10-31 14:37:37 +01004262 * Server-side initiated renegotiations send HelloRequest
Paul Bakker677377f2013-10-28 12:54:26 +01004263
Paul Bakker5c17ccd2013-10-15 13:12:41 +02004264= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakkerb799dec2013-10-11 10:03:27 +02004265Features
4266 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakker376e8152013-10-15 12:44:23 +02004267 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerf34673e2013-10-15 12:46:17 +02004268 * Support for RSA-PSK key-exchange and ciphersuites
Paul Bakkerb799dec2013-10-11 10:03:27 +02004269
Paul Bakkerddba8822013-10-11 09:21:56 +02004270Changes
4271 * RSA blinding locks for a smaller amount of time
Paul Bakker16770332013-10-11 09:59:44 +02004272 * TLS compression only allocates working buffer once
Paul Bakkerbe089b02013-10-14 15:51:50 +02004273 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
Paul Bakkera7ea6a52013-10-15 11:55:10 +02004274 * config.h is more script-friendly
Paul Bakkerddba8822013-10-11 09:21:56 +02004275
4276Bugfix
4277 * Missing MSVC defines added
4278 * Compile errors with POLARSSL_RSA_NO_CRT
4279 * Header files with 'polarssl/'
Paul Bakkerfcc17212013-10-11 09:36:52 +02004280 * Const correctness
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02004281 * Possible naming collision in dhm_context
Paul Bakker4aa40d42013-10-11 10:49:24 +02004282 * Better support for MSVC
Paul Bakkerb7c13122013-10-11 10:51:32 +02004283 * threading_set_alt() name
Paul Bakker5191e922013-10-11 10:54:28 +02004284 * Added missing x509write_crt_set_version()
Paul Bakkerddba8822013-10-11 09:21:56 +02004285
Paul Bakker5c17ccd2013-10-15 13:12:41 +02004286= PolarSSL 1.3.0 released on 2013-10-01
Paul Bakker41c83d32013-03-20 14:39:14 +01004287Features
4288 * Elliptic Curve Cryptography module added
4289 * Elliptic Curve Diffie Hellman module added
4290 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
4291 (ECDHE-based ciphersuites)
Paul Bakkerc8676782013-08-28 12:15:11 +02004292 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
4293 (ECDSA-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02004294 * Ability to specify allowed ciphersuites based on the protocol version.
Paul Bakkerb91c2b52013-04-19 16:05:16 +02004295 * PSK and DHE-PSK based ciphersuites added
Paul Bakker6e339b52013-07-03 13:37:05 +02004296 * Memory allocation abstraction layer added
4297 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakker2466d932013-09-28 14:40:38 +02004298 * Threading abstraction layer added (dummy / pthread / alternate)
Paul Bakker5ad403f2013-09-18 21:21:30 +02004299 * Public Key abstraction layer added
Paul Bakkerf85778e2013-07-19 14:55:25 +02004300 * Parsing Elliptic Curve keys
4301 * Parsing Elliptic Curve certificates
4302 * Support for max_fragment_length extension (RFC 6066)
4303 * Support for truncated_hmac extension (RFC 6066)
Paul Bakkerda4d1c32013-08-14 12:24:34 +02004304 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
4305 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
Paul Bakker936539a2013-08-14 13:49:20 +02004306 * Support for session tickets (RFC 5077)
Paul Bakkerca174fe2013-08-28 16:31:30 +02004307 * Certificate Request (CSR) generation with extensions (key_usage,
4308 ns_cert_type)
Paul Bakker7fb4a792013-09-12 12:00:52 +02004309 * X509 Certificate writing with extensions (basic_constraints,
4310 issuer_key_identifier, etc)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02004311 * Optional blinding for RSA, DHM and EC
Paul Bakker8b817dc2013-09-25 18:03:58 +02004312 * Support for multiple active certificate / key pairs in SSL servers for
Darryl Green11999bb2018-03-13 15:22:58 +00004313 the same host (Not to be confused with SNI!)
Paul Bakker41c83d32013-03-20 14:39:14 +01004314
Paul Bakker9b5798d2013-03-13 13:53:00 +01004315Changes
Paul Bakkerd2f068e2013-08-27 21:19:20 +02004316 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
4317 individually
Paul Bakker68884e32013-01-07 18:20:04 +01004318 * Introduced separate SSL Ciphersuites module that is based on
4319 Cipher and MD information
Paul Bakker9b5798d2013-03-13 13:53:00 +01004320 * Internals for SSL module adapted to have separate IV pointer that is
4321 dynamically set (Better support for hardware acceleration)
Paul Bakkerc70b9822013-04-07 22:00:46 +02004322 * Moved all OID functionality to a separate module. RSA function
4323 prototypes for the RSA sign and verify functions changed as a result
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02004324 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker2fbefde2013-06-29 16:01:15 +02004325 * Client and server now filter sent and accepted ciphersuites on minimum
4326 and maximum protocol version
Paul Bakker0be444a2013-08-27 21:55:01 +02004327 * Ability to disable server_name extension (RFC 6066)
Paul Bakkere2ab84f2013-06-29 18:24:32 +02004328 * Renamed error_strerror() to the less conflicting polarssl_strerror()
4329 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker9e36f042013-06-30 14:34:05 +02004330 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
Paul Bakker548957d2013-08-30 10:30:02 +02004331 * All RSA operations require a random generator for blinding purposes
Paul Bakker45f21c72013-09-18 15:33:49 +02004332 * X509 core refactored
4333 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
Paul Bakker5ad403f2013-09-18 21:21:30 +02004334 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakkerc27c4e22013-09-23 15:01:36 +02004335 * Support faulty X509 v1 certificates with extensions
4336 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker9b5798d2013-03-13 13:53:00 +01004337
Paul Bakkereff2e6d2013-04-11 17:13:22 +02004338Bugfix
Paul Bakker73d44312013-05-22 13:56:26 +02004339 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02004340 * zlib compression/decompression skipped on empty blocks
Paul Bakker1e6a1752013-07-26 14:10:22 +02004341 * Support for AIX header locations in net.c module
Paul Bakker003dbad2013-09-09 17:26:14 +02004342 * Fixed file descriptor leaks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02004343
Paul Bakkeraab30c12013-08-30 11:00:25 +02004344Security
4345 * RSA blinding on CRT operations to counter timing attacks
4346 (found by Cyril Arnaud and Pierre-Alain Fouque)
4347
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02004348
4349= Version 1.2.14 released 2015-05-??
4350
4351Security
4352 * Fix potential invalid memory read in the server, that allows a client to
4353 crash it remotely (found by Caj Larsson).
4354 * Fix potential invalid memory read in certificate parsing, that allows a
4355 client to crash the server remotely if client authentication is enabled
4356 (found using Codenomicon Defensics).
4357 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
4358 https://dl.acm.org/citation.cfm?id=2714625
4359
4360Bugfix
4361 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
4362 * Fix hardclock() (only used in the benchmarking program) with some
4363 versions of mingw64 (found by kxjhlele).
4364 * Fix warnings from mingw64 in timing.c (found by kxjklele).
4365 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
4366 platforms (found with Coverity Scan).
4367
4368= Version 1.2.13 released 2015-02-16
4369Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
4370 this will be made in the 1.2 branch at this point.
4371
4372Security
4373 * Fix remotely-triggerable uninitialised pointer dereference caused by
4374 crafted X.509 certificate (TLS server is not affected if it doesn't ask
4375 for a client certificate) (found using Codenomicon Defensics).
4376 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
4377 (TLS server is not affected if it doesn't ask for a client certificate)
4378 (found using Codenomicon Defensics).
4379 * Fix potential stack overflow while parsing crafted X.509 certificates
4380 (TLS server is not affected if it doesn't ask for a client certificate)
4381 found using Codenomicon Defensics).
4382 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
4383 (TLS server is not affected if it doesn't ask for a client certificate).
4384
4385Bugfix
4386 * Fix potential undefined behaviour in Camellia.
4387 * Fix memory leaks in PKCS#5 and PKCS#12.
4388 * Stack buffer overflow if ctr_drbg_update() is called with too large
4389 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
4390 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
4391 in 1.2.12).
4392 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
4393 Peter Vaskovic).
4394 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
4395 * ssl_get_verify_result() now works even if the handshake was aborted due
4396 to a failed verification (found by Fredrik Axelsson).
4397 * Skip writing and parsing signature_algorithm extension if none of the
4398 key exchanges enabled needs certificates. This fixes a possible interop
4399 issue with some servers when a zero-length extension was sent. (Reported
4400 by Peter Dettman.)
4401 * On a 0-length input, base64_encode() did not correctly set output length
4402 (found by Hendrik van den Boogaard).
4403
4404Changes
4405 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
4406 * Forbid repeated extensions in X.509 certificates.
4407 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
4408 length of an X.509 verification chain (default = 8).
Paul Bakkera6c5ea22014-10-24 16:26:29 +02004409= Version 1.2.12 released 2014-10-24
4410
4411Security
4412 * Remotely-triggerable memory leak when parsing some X.509 certificates
4413 (server is not affected if it doesn't ask for a client certificate).
4414 (Found using Codenomicon Defensics.)
4415
4416Bugfix
4417 * Fix potential bad read in parsing ServerHello (found by Adrien
4418 Vialletelle).
4419 * ssl_close_notify() could send more than one message in some circumstances
4420 with non-blocking I/O.
4421 * x509_crt_parse() did not increase total_failed on PEM error
4422 * Fix compiler warnings on iOS (found by Sander Niemeijer).
4423 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
4424 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
4425 * ssl_read() could return non-application data records on server while
4426 renegotation was pending, and on client when a HelloRequest was received.
4427 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
4428
4429Changes
4430 * X.509 certificates with more than one AttributeTypeAndValue per
4431 RelativeDistinguishedName are not accepted any more.
4432 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
4433 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
4434 * Accept spaces at end of line or end of buffer in base64_decode().
4435
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02004436= Version 1.2.11 released 2014-07-11
4437Features
4438 * Entropy module now supports seed writing and reading
4439
4440Changes
4441 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
4442 * Improvements to the CMake build system, contributed by Julian Ospald.
4443 * Work around a bug of the version of Clang shipped by Apple with Mavericks
4444 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
4445 * Improvements to tests/Makefile, contributed by Oden Eriksson.
4446 * Use UTC time to check certificate validity.
4447 * Reject certificates with times not in UTC, per RFC 5280.
4448 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
4449 against unwanted compiler optimizations
4450
4451Security
4452 * Forbid change of server certificate during renegotiation to prevent
4453 "triple handshake" attack when authentication mode is optional (the
4454 attack was already impossible when authentication is required).
4455 * Check notBefore timestamp of certificates and CRLs from the future.
4456 * Forbid sequence number wrapping
4457 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
4458 TrustInSoft)
4459 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
4460 It was possible to crash the server (and client) using crafted messages
4461 when a GCM suite was chosen.
4462
4463Bugfix
4464 * Fixed X.509 hostname comparison (with non-regular characters)
4465 * SSL now gracefully handles missing RNG
4466 * crypt_and_hash app checks MAC before final decryption
4467 * Fixed x509_crt_parse_path() bug on Windows platforms
4468 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
4469 TrustInSoft)
4470 * Fixed potential overflow in certificate size verification in
4471 ssl_write_certificate() (found by TrustInSoft)
4472 * Fix ASM format in bn_mul.h
4473 * Potential memory leak in bignum_selftest()
4474 * Replaced expired test certificate
4475 * ssl_mail_client now terminates lines with CRLF, instead of LF
4476 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
4477 * Fixed testing with out-of-source builds using cmake
4478 * Fixed version-major intolerance in server
4479 * Fixed CMake symlinking on out-of-source builds
4480 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
4481 Alex Wilson.)
4482 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
4483 out_ctr failed
4484 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
4485 of one of them failed
4486 * x509_get_current_time() uses localtime_r() to prevent thread issues
4487 * Some example server programs were not sending the close_notify alert.
4488 * Potential memory leak in mpi_exp_mod() when error occurs during
4489 calculation of RR.
4490 * Improve interoperability by not writing extension length in ClientHello
4491 when no extensions are present (found by Matthew Page)
4492 * rsa_check_pubkey() now allows an E up to N
4493 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
4494 * mpi_fill_random() was creating numbers larger than requested on
4495 big-endian platform when size was not an integer number of limbs
4496 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
4497 * Stricter check on SSL ClientHello internal sizes compared to actual packet
4498 size (found by TrustInSoft)
4499 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
4500 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
4501 interpret semicolons as comment delimiters (found by Barry K. Nathan).
4502 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
4503 * Fix base64_decode() to return and check length correctly (in case of
4504 tight buffers)
4505
Paul Bakker3a2c0562013-10-07 16:22:05 +02004506= Version 1.2.10 released 2013-10-07
4507Changes
4508 * Changed RSA blinding to a slower but thread-safe version
4509
4510Bugfix
4511 * Fixed memory leak in RSA as a result of introduction of blinding
4512 * Fixed ssl_pkcs11_decrypt() prototype
4513 * Fixed MSVC project files
4514
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004515= Version 1.2.9 released 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02004516Changes
4517 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
4518
4519Bugfix
4520 * Fixed potential memory leak when failing to resume a session
4521 * Fixed potential file descriptor leaks (found by Remi Gacogne)
4522 * Minor fixes
4523
4524Security
4525 * Fixed potential heap buffer overflow on large hostname setting
4526 * Fixed potential negative value misinterpretation in load_file()
4527 * RSA blinding on CRT operations to counter timing attacks
4528 (found by Cyril Arnaud and Pierre-Alain Fouque)
4529
Paul Bakkerde656232013-06-24 19:07:34 +02004530= Version 1.2.8 released 2013-06-19
4531Features
4532 * Parsing of PKCS#8 encrypted private key files
4533 * PKCS#12 PBE and derivation functions
4534 * Centralized module option values in config.h to allow user-defined
4535 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
4536
4537Changes
4538 * HAVEGE random generator disabled by default
4539 * Internally split up x509parse_key() into a (PEM) handler function
4540 and specific DER parser functions for the PKCS#1 and unencrypted
4541 PKCS#8 private key formats
4542 * Added mechanism to provide alternative implementations for all
4543 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
Darryl Green11999bb2018-03-13 15:22:58 +00004544 config.h)
Paul Bakkerde656232013-06-24 19:07:34 +02004545 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
4546 old PBKDF2 module
4547
4548Bugfix
4549 * Secure renegotiation extension should only be sent in case client
4550 supports secure renegotiation
4551 * Fixed offset for cert_type list in ssl_parse_certificate_request()
4552 * Fixed const correctness issues that have no impact on the ABI
4553 * x509parse_crt() now better handles PEM error situations
4554 * ssl_parse_certificate() now calls x509parse_crt_der() directly
4555 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00004556 certificates
Paul Bakkerde656232013-06-24 19:07:34 +02004557 * x509parse_crtpath() is now reentrant and uses more portable stat()
4558 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
4559 * Fixed values for 2-key Triple DES in cipher layer
4560 * ssl_write_certificate_request() can handle empty ca_chain
4561
4562Security
4563 * A possible DoS during the SSL Handshake, due to faulty parsing of
4564 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4565
4566= Version 1.2.7 released 2013-04-13
4567Features
4568 * Ability to specify allowed ciphersuites based on the protocol version.
4569
4570Changes
4571 * Default Blowfish keysize is now 128-bits
4572 * Test suites made smaller to accommodate Raspberry Pi
4573
4574Bugfix
4575 * Fix for MPI assembly for ARM
4576 * GCM adapted to support sizes > 2^29
4577
Paul Bakker90f042d2013-03-11 11:38:44 +01004578= Version 1.2.6 released 2013-03-11
Paul Bakkerc0463502013-02-14 11:19:38 +01004579Bugfix
4580 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01004581 * Corrected GCM counter incrementation to use only 32-bits instead of
4582 128-bits (found by Yawning Angel)
Paul Bakkere3e4a592013-02-28 10:20:53 +01004583 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakker37286a52013-03-06 16:55:11 +01004584 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01004585 * Fixed assembly code for ARM (Thumb and regular) for some compilers
Paul Bakkerc0463502013-02-14 11:19:38 +01004586
Paul Bakkerb3869132013-02-28 17:21:01 +01004587Changes
4588 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
4589 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
4590 PKCS#1 v2.1 functions
Paul Bakkera43231c2013-02-28 17:33:49 +01004591 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
4592 or rsa_rsaes_oaep_decrypt()
Paul Bakker78a8c712013-03-06 17:01:52 +01004593 * Re-added handling for SSLv2 Client Hello when the define
4594 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkere81beda2013-03-06 17:40:46 +01004595 * The SSL session cache module (ssl_cache) now also retains peer_cert
4596 information (not the entire chain)
Paul Bakkerb3869132013-02-28 17:21:01 +01004597
Paul Bakkere47b34b2013-02-27 14:48:00 +01004598Security
4599 * Removed further timing differences during SSL message decryption in
4600 ssl_decrypt_buf()
Paul Bakker8804f692013-02-28 18:06:26 +01004601 * Removed timing differences due to bad padding from
4602 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
4603 operations
Paul Bakkere47b34b2013-02-27 14:48:00 +01004604
Paul Bakkerc7a2da42013-02-02 19:23:57 +01004605= Version 1.2.5 released 2013-02-02
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004606Changes
4607 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakkerd66f0702013-01-31 16:57:45 +01004608 * Debug messages about padding errors during SSL message decryption are
Hanno Becker01a0e072017-07-26 11:49:40 +01004609 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakker40865c82013-01-31 17:13:13 +01004610 * Sending of security-relevant alert messages that do not break
4611 interoperability can be switched on/off with the flag
Paul Bakkera35aa542013-03-06 17:06:21 +01004612 POLARSSL_SSL_ALL_ALERT_MESSAGES
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004613
Paul Bakker45829992013-01-03 14:52:21 +01004614Security
4615 * Removed timing differences during SSL message decryption in
4616 ssl_decrypt_buf() due to badly formatted padding
4617
Paul Bakker14c56a32013-01-25 17:11:37 +01004618= Version 1.2.4 released 2013-01-25
Paul Bakker1961b702013-01-25 14:49:24 +01004619Changes
Paul Bakker68884e32013-01-07 18:20:04 +01004620 * More advanced SSL ciphersuite representation and moved to more dynamic
4621 SSL core
Paul Bakker1961b702013-01-25 14:49:24 +01004622 * Added ssl_handshake_step() to allow single stepping the handshake process
4623
Paul Bakker40628ba2013-01-03 10:50:31 +01004624Bugfix
4625 * Memory leak when using RSA_PKCS_V21 operations fixed
Paul Bakker21dca692013-01-03 11:41:08 +01004626 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker9c94cdd2013-01-22 13:45:33 +01004627 * Correctly handle CertificateRequest message in client for <= TLS 1.1
4628 without DN list
Paul Bakker40628ba2013-01-03 10:50:31 +01004629
Paul Bakkerfb1ba782012-11-26 16:28:25 +01004630= Version 1.2.3 released 2012-11-26
4631Bugfix
4632 * Server not always sending correct CertificateRequest message
4633
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004634= Version 1.2.2 released 2012-11-24
Paul Bakkere667c982012-11-20 13:50:22 +01004635Changes
4636 * Added p_hw_data to ssl_context for context specific hardware acceleration
4637 data
Hanno Becker01a0e072017-07-26 11:49:40 +01004638 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkere667c982012-11-20 13:50:22 +01004639
Paul Bakker7c90da92012-11-23 14:02:40 +01004640Bugfixes
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004641 * Fixed client authentication compatibility
4642 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker7c90da92012-11-23 14:02:40 +01004643
Paul Bakker14926332012-11-20 10:58:09 +01004644= Version 1.2.1 released 2012-11-20
Paul Bakker34d8dbc2012-11-14 12:11:38 +00004645Changes
4646 * Depth that the certificate verify callback receives is now numbered
4647 bottom-up (Peer cert depth is 0)
4648
Paul Bakker7a2538e2012-11-02 10:59:36 +00004649Bugfixes
4650 * Fixes for MSVC6
Paul Bakkerd9374b02012-11-02 11:02:58 +00004651 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Paul Bakkerf02c5642012-11-13 10:25:21 +00004652 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4653 Pégourié-Gonnard)
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01004654 * Fixed possible segfault in mpi_shift_r() (found by Manuel
4655 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00004656 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakker7a2538e2012-11-02 10:59:36 +00004657
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004658= Version 1.2.0 released 2012-10-31
Paul Bakkerfab5c822012-02-06 16:45:10 +00004659Features
4660 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
4661 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
4662 default!
Paul Bakkera8cd2392012-02-11 16:09:32 +00004663 * Added support for wildcard certificates
4664 * Added support for multi-domain certificates through the X509 Subject
4665 Alternative Name extension
Paul Bakkerbdb912d2012-02-13 23:11:30 +00004666 * Added preliminary ASN.1 buffer writing support
4667 * Added preliminary X509 Certificate Request writing support
4668 * Added key_app_writer example application
4669 * Added cert_req example application
Paul Bakker89e80c92012-03-20 13:50:09 +00004670 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker48916f92012-09-16 19:57:18 +00004671 * Added TLS 1.2 support (RFC 5246)
Paul Bakkerca4ab492012-04-18 14:23:57 +00004672 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakker01cc3942012-05-08 08:36:15 +00004673 * Added commandline error code convertor (util/strerror)
Paul Bakker05ef8352012-05-08 09:17:57 +00004674 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004675 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004676 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker8d914582012-06-04 12:46:42 +00004677 * Added X509 CA Path support
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00004678 * Added Thumb assembly optimizations
Paul Bakker2770fbd2012-07-03 13:30:23 +00004679 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker6132d0a2012-07-04 17:10:40 +00004680 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakkerf518b162012-08-23 13:03:18 +00004681 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker48916f92012-09-16 19:57:18 +00004682 * Added Secure Renegotiation (RFC 5746)
Paul Bakker29b64762012-09-25 09:36:44 +00004683 * Added predefined DHM groups from RFC 5114
Paul Bakker0a597072012-09-25 21:55:46 +00004684 * Added simple SSL session cache implementation
Paul Bakker5701cdc2012-09-27 21:49:42 +00004685 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1d29fb52012-09-28 13:28:45 +00004686 * Added option to add minimum accepted SSL/TLS protocol version
Paul Bakkerfab5c822012-02-06 16:45:10 +00004687
Paul Bakker1504af52012-02-11 16:17:43 +00004688Changes
4689 * Removed redundant POLARSSL_DEBUG_MSG define
Paul Bakker048d04e2012-02-12 17:31:04 +00004690 * AES code only check for Padlock once
Paul Bakker6b906e52012-05-08 12:01:43 +00004691 * Fixed const-correctness mpi_get_bit()
4692 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker186751d2012-05-08 13:16:14 +00004693 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker4d2c1242012-05-10 14:12:46 +00004694 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
Paul Bakker5b377842012-05-16 07:57:36 +00004695 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakker6132d0a2012-07-04 17:10:40 +00004696 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
4697 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkerec636f32012-09-09 19:17:02 +00004698 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
Paul Bakker0a597072012-09-25 21:55:46 +00004699 * Revamped session resumption handling
Paul Bakkereb2c6582012-09-27 19:15:01 +00004700 * Generalized external private key implementation handling (like PKCS#11)
4701 in SSL/TLS
Paul Bakker915275b2012-09-28 07:10:55 +00004702 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker5c2364c2012-10-01 14:41:15 +00004703 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker645ce3a2012-10-31 12:32:41 +00004704 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker1504af52012-02-11 16:17:43 +00004705
Paul Bakker37824582012-03-22 14:10:22 +00004706Bugfix
Paul Bakker7beceb22012-03-22 14:19:49 +00004707 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
4708 Hui Dong)
Paul Bakker430ffbe2012-05-01 08:14:20 +00004709 * Fixed potential heap corruption in x509_name allocation
Paul Bakker5b377842012-05-16 07:57:36 +00004710 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkerf6198c12012-05-16 08:02:29 +00004711 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
4712 #52)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004713 * Handle encryption with private key and decryption with public key as per
Darryl Green11999bb2018-03-13 15:22:58 +00004714 RFC 2313
Paul Bakkercefb3962012-06-27 11:51:09 +00004715 * Handle empty certificate subject names
Paul Bakker535e97d2012-08-23 10:49:55 +00004716 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00004717 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker995a2152012-09-25 08:19:56 +00004718 with carry rollover (found by Ruslan Yushchenko)
Paul Bakkerb00ca422012-09-25 12:10:00 +00004719 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker4f024b72012-10-30 07:29:57 +00004720 * Fixed MPI assembly for SPARC64 platform
Paul Bakker37824582012-03-22 14:10:22 +00004721
Paul Bakker452d5322012-04-05 12:07:34 +00004722Security
Paul Bakker3c16db92012-07-05 13:58:08 +00004723 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
4724 Vanderbeken)
Paul Bakker452d5322012-04-05 12:07:34 +00004725
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004726= Version 1.1.8 released on 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02004727Bugfix
4728 * Fixed potential memory leak when failing to resume a session
4729 * Fixed potential file descriptor leaks
4730
4731Security
4732 * Potential buffer-overflow for ssl_read_record() (independently found by
4733 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
4734 * Potential negative value misinterpretation in load_file()
4735 * Potential heap buffer overflow on large hostname setting
4736
Paul Bakker248fff52013-06-24 19:08:50 +02004737= Version 1.1.7 released on 2013-06-19
4738Changes
4739 * HAVEGE random generator disabled by default
4740
4741Bugfix
4742 * x509parse_crt() now better handles PEM error situations
4743 * ssl_parse_certificate() now calls x509parse_crt_der() directly
4744 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00004745 certificates
Paul Bakker248fff52013-06-24 19:08:50 +02004746 * Fixed values for 2-key Triple DES in cipher layer
4747 * ssl_write_certificate_request() can handle empty ca_chain
4748
4749Security
4750 * A possible DoS during the SSL Handshake, due to faulty parsing of
4751 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4752
4753= Version 1.1.6 released on 2013-03-11
4754Bugfix
4755 * Fixed net_bind() for specified IP addresses on little endian systems
4756
4757Changes
4758 * Allow enabling of dummy error_strerror() to support some use-cases
4759 * Debug messages about padding errors during SSL message decryption are
4760 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
4761
4762Security
4763 * Removed timing differences during SSL message decryption in
4764 ssl_decrypt_buf()
4765 * Removed timing differences due to bad padding from
4766 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
4767 operations
4768
Paul Bakker9d2bb652013-01-25 16:07:49 +01004769= Version 1.1.5 released on 2013-01-16
4770Bugfix
4771 * Fixed MPI assembly for SPARC64 platform
4772 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
4773 * mpi_add_abs() now correctly handles adding short numbers to long numbers
4774 with carry rollover
4775 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
4776 * Prevent reading over buffer boundaries on X509 certificate parsing
4777 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
4778 #52)
4779 * Fixed possible segfault in mpi_shift_r() (found by Manuel
4780 Pégourié-Gonnard)
4781 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4782 Pégourié-Gonnard)
4783 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
4784 * Memory leak when using RSA_PKCS_V21 operations fixed
4785 * Handle encryption with private key and decryption with public key as per
4786 RFC 2313
4787 * Fixes for MSVC6
4788
4789Security
4790 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
4791 Vanderbeken)
4792
Paul Bakkerd5834bb2012-10-02 14:38:56 +00004793= Version 1.1.4 released on 2012-05-31
4794Bugfix
4795 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
4796 * Fixed potential heap corruption in x509_name allocation
4797 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
4798
Paul Bakkerfad38932012-05-08 09:04:04 +00004799= Version 1.1.3 released on 2012-04-29
4800Bugfix
4801 * Fixed random MPI generation to not generate more size than requested.
4802
4803= Version 1.1.2 released on 2012-04-26
4804Bugfix
4805 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
4806 Hui Dong)
4807
4808Security
4809 * Fixed potential memory corruption on miscrafted client messages (found by
4810 Frama-C team at CEA LIST)
4811 * Fixed generation of DHM parameters to correct length (found by Ruslan
4812 Yushchenko)
4813
Paul Bakker99955bf2012-01-23 09:31:41 +00004814= Version 1.1.1 released on 2012-01-23
Paul Bakkerb15b8512012-01-13 13:44:06 +00004815Bugfix
4816 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
4817 (Closes ticket #47, found by Hugo Leisink)
Paul Bakker2ec0a562012-01-21 05:41:23 +00004818 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakker99955bf2012-01-23 09:31:41 +00004819 * Fixed multiple compiler warnings for VS6 and armcc
4820 * Fixed bug in CTR_CRBG selftest
Paul Bakkerb15b8512012-01-13 13:44:06 +00004821
Paul Bakker08a50882011-12-22 09:43:57 +00004822= Version 1.1.0 released on 2011-12-22
Paul Bakker7eb013f2011-10-06 12:37:39 +00004823Features
4824 * Added ssl_session_reset() to allow better multi-connection pools of
4825 SSL contexts without needing to set all non-connection-specific
Darryl Green11999bb2018-03-13 15:22:58 +00004826 data and pointers again. Adapted ssl_server to use this functionality.
Paul Bakker490ecc82011-10-06 13:04:09 +00004827 * Added ssl_set_max_version() to allow clients to offer a lower maximum
4828 supported version to a server to help buggy server implementations.
Darryl Green11999bb2018-03-13 15:22:58 +00004829 (Closes ticket #36)
Paul Bakker03a30d32011-11-11 10:55:02 +00004830 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
4831 introspection functions (Closes ticket #40)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00004832 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Paul Bakker6083fd22011-12-03 21:45:14 +00004833 * Added a generic entropy accumulator that provides support for adding
4834 custom entropy sources and added some generic and platform dependent
Darryl Green11999bb2018-03-13 15:22:58 +00004835 entropy sources
Paul Bakker7eb013f2011-10-06 12:37:39 +00004836
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004837Changes
4838 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerd246ed32011-10-06 13:18:27 +00004839 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
4840 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerc4909d92011-10-12 09:52:22 +00004841 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerfbc09f32011-10-12 09:56:41 +00004842 * Added an EXPLICIT tag number parameter to x509_get_ext()
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00004843 * Added a separate CRL entry extension parsing function
Paul Bakkerefc30292011-11-10 14:43:23 +00004844 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
4845 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakker5e18aed2011-11-15 15:38:45 +00004846 * Changed the defined key-length of DES ciphers in cipher.h to include the
4847 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkercce9d772011-11-18 14:26:47 +00004848 * Loads of minimal changes to better support WINCE as a build target
Paul Bakker2e6d5322011-11-18 14:34:17 +00004849 (Credits go to Marco Lizza)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00004850 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
4851 trade-off
Paul Bakkerfe3256e2011-11-25 12:11:43 +00004852 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
4853 management (Closes ticket #44)
Paul Bakkera3d195c2011-11-27 21:07:34 +00004854 * Changed the used random function pointer to more flexible format. Renamed
4855 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakkera35aa542013-03-06 17:06:21 +01004856 a consequence in library code and programs
Paul Bakker508ad5a2011-12-04 17:09:26 +00004857 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakker6c0ceb32011-12-04 12:24:18 +00004858 * Added permissive certificate parsing to x509parse_crt() and
4859 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakkera35aa542013-03-06 17:06:21 +01004860 encountering a parse-error. Beware that the meaning of return values has
4861 changed!
Paul Bakker69e095c2011-12-10 21:55:01 +00004862 * All error codes are now negative. Even on mermory failures and IO errors.
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004863
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004864Bugfix
4865 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
4866 ticket #37)
Paul Bakker3329d1f2011-10-12 09:55:01 +00004867 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
4868 before version numbers
Paul Bakkercebdf172011-11-11 15:01:31 +00004869 * Allowed X509 key usage parsing to accept 4 byte values instead of the
4870 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00004871 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
4872 smaller than the hash length. (Closes ticket #41)
Paul Bakker03c7c252011-11-25 12:37:37 +00004873 * If certificate serial is longer than 32 octets, serial number is now
4874 appended with '....' after first 28 octets
Paul Bakker44637402011-11-26 09:23:07 +00004875 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakker4f5ae802011-12-04 22:10:28 +00004876 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerc50132d2011-12-05 14:38:36 +00004877 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00004878 certificates and CRLs
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004879
Paul Bakker968bc982011-07-27 17:03:00 +00004880= Version 1.0.0 released on 2011-07-27
Paul Bakker343a8702011-06-09 14:27:58 +00004881Features
4882 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker7bc05ff2011-08-09 10:30:36 +00004883 * Added rsa_encrypt and rsa_decrypt simple example programs.
Paul Bakker343a8702011-06-09 14:27:58 +00004884
Paul Bakker42e59812011-06-09 15:55:41 +00004885Changes
4886 * The generic cipher and message digest layer now have normal error
4887 codes instead of integers
4888
Paul Bakker887bd502011-06-08 13:10:54 +00004889Bugfix
4890 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
4891 #18)
4892
Paul Bakker828acb22011-05-27 09:25:42 +00004893= Version 0.99-pre5 released on 2011-05-26
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004894Features
4895 * Added additional Cipher Block Modes to symmetric ciphers
4896 (AES CTR, Camellia CTR, XTEA CBC) including the option to
Paul Bakkera35aa542013-03-06 17:06:21 +01004897 enable and disable individual modes when needed
Paul Bakker335db3f2011-04-25 15:28:35 +00004898 * Functions requiring File System functions can now be disabled
4899 by undefining POLARSSL_FS_IO
Paul Bakker9d781402011-05-09 16:17:09 +00004900 * A error_strerror function() has been added to translate between
4901 error codes and their description.
Paul Bakker2f5947e2011-05-18 15:47:11 +00004902 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
4903 functions.
Paul Bakker1496d382011-05-23 12:07:29 +00004904 * Added ssl_mail_client and ssl_fork_server as example programs.
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004905
Paul Bakker23986e52011-04-24 08:57:21 +00004906Changes
4907 * Major argument / variable rewrite. Introduced use of size_t
4908 instead of int for buffer lengths and loop variables for
Paul Bakkera35aa542013-03-06 17:06:21 +01004909 better unsigned / signed use. Renamed internal bigint types
4910 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker6c591fa2011-05-05 11:49:20 +00004911 * mpi_init() and mpi_free() now only accept a single MPI
4912 argument and do not accept variable argument lists anymore.
Paul Bakker9d781402011-05-09 16:17:09 +00004913 * The error codes have been remapped and combining error codes
4914 is now done with a PLUS instead of an OR as error codes
Paul Bakkera35aa542013-03-06 17:06:21 +01004915 used are negative.
Paul Bakker831a7552011-05-18 13:32:51 +00004916 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
4917 net_recv() now returns 0 on EOF instead of
Paul Bakkera35aa542013-03-06 17:06:21 +01004918 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
4919 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
4920 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
4921 after the handshake.
Paul Bakker831a7552011-05-18 13:32:51 +00004922 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
4923 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakkera35aa542013-03-06 17:06:21 +01004924 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker23986e52011-04-24 08:57:21 +00004925
Paul Bakker3efa5752011-04-01 12:23:26 +00004926= Version 0.99-pre4 released on 2011-04-01
Paul Bakker9dcc3222011-03-08 14:16:06 +00004927Features
4928 * Added support for PKCS#1 v2.1 encoding and thus support
4929 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakkere77db2e2011-03-25 14:01:32 +00004930 * Reading of Public Key files incorporated into default x509
4931 functionality as well.
Paul Bakker287781a2011-03-26 13:18:49 +00004932 * Added mpi_fill_random() for centralized filling of big numbers
4933 with random data (Fixed ticket #10)
Paul Bakker9dcc3222011-03-08 14:16:06 +00004934
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004935Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004936 * Debug print of MPI now removes leading zero octets and
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004937 displays actual bit size of the value.
Hanno Becker01a0e072017-07-26 11:49:40 +01004938 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakker98675492011-03-26 13:17:12 +00004939 does not zeroize memory in advance anymore. Use rsa_init()
Paul Bakkera35aa542013-03-06 17:06:21 +01004940 before parsing a key or keyfile!
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004941
4942Bugfix
4943 * Debug output of MPI's now the same independent of underlying
4944 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
Paul Bakkera35aa542013-03-06 17:06:21 +01004945 Kiilerich and Mihai Militaru)
Paul Bakker1fd00bf2011-03-14 20:50:15 +00004946 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
4947 #18, found by Nikolay Epifanov)
Paul Bakkere77db2e2011-03-25 14:01:32 +00004948 * Fixed proper handling of RSASSA-PSS verification with variable
4949 length salt lengths
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004950
Paul Bakker345a6fe2011-02-28 21:20:02 +00004951= Version 0.99-pre3 released on 2011-02-28
4952This release replaces version 0.99-pre2 which had possible copyright issues.
Paul Bakker96743fc2011-02-12 14:30:57 +00004953Features
4954 * Parsing PEM private keys encrypted with DES and AES
4955 are now supported as well (Fixes ticket #5)
Paul Bakkera9507c02011-02-12 15:27:28 +00004956 * Added crl_app program to allow easy reading and
4957 printing of X509 CRLs from file
Paul Bakker96743fc2011-02-12 14:30:57 +00004958
4959Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004960 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00004961 ticket #13). Also possible to remove PEM support for
Paul Bakkera35aa542013-03-06 17:06:21 +01004962 systems only using DER encoding
Paul Bakker96743fc2011-02-12 14:30:57 +00004963
Paul Bakker400ff6f2011-02-20 10:40:16 +00004964Bugfixes
4965 * Corrected parsing of UTCTime dates before 1990 and
4966 after 1950
4967 * Support more exotic OID's when parsing certificates
Darryl Green11999bb2018-03-13 15:22:58 +00004968 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004969 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004970 certificates (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004971 * Replaced the expired test certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004972 * Do not bail out if no client certificate specified. Try
4973 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakkera35aa542013-03-06 17:06:21 +01004974 found by Boris Krasnovskiy)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004975
Paul Bakker345a6fe2011-02-28 21:20:02 +00004976Security fixes
4977 * Fixed a possible Man-in-the-Middle attack on the
4978 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakkera35aa542013-03-06 17:06:21 +01004979 Subreption LLC)
Paul Bakker345a6fe2011-02-28 21:20:02 +00004980
Paul Bakker9fc46592011-01-30 16:59:02 +00004981= Version 0.99-pre1 released on 2011-01-30
Paul Bakker37ca75d2011-01-06 12:28:03 +00004982Features
Paul Bakkerb63b0af2011-01-13 17:54:59 +00004983Note: Most of these features have been donated by Fox-IT
4984 * Added Doxygen source code documentation parts
Paul Bakker1b57b062011-01-06 15:48:19 +00004985 * Added reading of DHM context from memory and file
Paul Bakker74111d32011-01-15 16:57:55 +00004986 * Improved X509 certificate parsing to include extended
Paul Bakker76fd75a2011-01-16 21:12:10 +00004987 certificate fields, including Key Usage
4988 * Improved certificate verification and verification
4989 against the available CRLs
Paul Bakker1f87fb62011-01-15 17:32:24 +00004990 * Detection for DES weak keys and parity bits added
Paul Bakker72f62662011-01-16 21:27:44 +00004991 * Improvements to support integration in other
4992 applications:
4993 + Added generic message digest and cipher wrapper
4994 + Improved information about current capabilities,
4995 status, objects and configuration
4996 + Added verification callback on certificate chain
4997 verification to allow external blacklisting
Darryl Green11999bb2018-03-13 15:22:58 +00004998 + Additional example programs to show usage
Paul Bakker43b7e352011-01-18 15:27:19 +00004999 * Added support for PKCS#11 through the use of the
5000 libpkcs11-helper library
Paul Bakker37ca75d2011-01-06 12:28:03 +00005001
Paul Bakkerb6194992011-01-16 21:40:22 +00005002Changes
5003 * x509parse_time_expired() checks time in addition to
5004 the existing date check
Paul Bakkere3166ce2011-01-27 17:40:50 +00005005 * The ciphers member of ssl_context and the cipher member
5006 of ssl_session have been renamed to ciphersuites and
Paul Bakkera35aa542013-03-06 17:06:21 +01005007 ciphersuite respectively. This clarifies the difference
5008 with the generic cipher layer and is better naming
5009 altogether
Paul Bakkerb6194992011-01-16 21:40:22 +00005010
Paul Bakker99ed6782011-01-05 14:48:42 +00005011= Version 0.14.0 released on 2010-08-16
5012Features
5013 * Added support for SSL_EDH_RSA_AES_128_SHA and
5014 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
5015 * Added compile-time and run-time version information
5016 * Expanded ssl_client2 arguments for more flexibility
5017 * Added support for TLS v1.1
5018
5019Changes
5020 * Made Makefile cleaner
5021 * Removed dependency on rand() in rsa_pkcs1_encrypt().
5022 Now using random fuction provided to function and
Paul Bakkera35aa542013-03-06 17:06:21 +01005023 changed the prototype of rsa_pkcs1_encrypt(),
5024 rsa_init() and rsa_gen_key().
Paul Bakker99ed6782011-01-05 14:48:42 +00005025 * Some SSL defines were renamed in order to avoid
5026 future confusion
5027
5028Bug fixes
5029 * Fixed CMake out of source build for tests (found by
5030 kkert)
5031 * rsa_check_private() now supports PKCS1v2 keys as well
5032 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
5033 generator
5034
5035= Version 0.13.1 released on 2010-03-24
5036Bug fixes
5037 * Fixed Makefile in library that was mistakenly merged
5038 * Added missing const string fixes
5039
5040= Version 0.13.0 released on 2010-03-21
5041Features
5042 * Added option parsing for host and port selection to
5043 ssl_client2
5044 * Added support for GeneralizedTime in X509 parsing
5045 * Added cert_app program to allow easy reading and
5046 printing of X509 certificates from file or SSL
5047 connection.
5048
5049Changes
5050 * Added const correctness for main code base
5051 * X509 signature algorithm determination is now
5052 in a function to allow easy future expansion
5053 * Changed symmetric cipher functions to
5054 identical interface (returning int result values)
Paul Bakker60b1d102013-10-29 10:02:51 +01005055 * Changed ARC4 to use separate input/output buffer
Paul Bakker99ed6782011-01-05 14:48:42 +00005056 * Added reset function for HMAC context as speed-up
5057 for specific use-cases
5058
5059Bug fixes
5060 * Fixed bug resulting in failure to send the last
5061 certificate in the chain in ssl_write_certificate() and
5062 ssl_write_certificate_request() (found by fatbob)
5063 * Added small fixes for compiler warnings on a Mac
5064 (found by Frank de Brabander)
5065 * Fixed algorithmic bug in mpi_is_prime() (found by
5066 Smbat Tonoyan)
5067
5068= Version 0.12.1 released on 2009-10-04
5069Changes
5070 * Coverage test definitions now support 'depends_on'
5071 tagging system.
5072 * Tests requiring specific hashing algorithms now honor
5073 the defines.
5074
5075Bug fixes
5076 * Changed typo in #ifdef in x509parse.c (found
5077 by Eduardo)
5078
5079= Version 0.12.0 released on 2009-07-28
5080Features
5081 * Added CMake makefiles as alternative to regular Makefiles.
5082 * Added preliminary Code Coverage tests for AES, ARC4,
5083 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
5084 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
5085 and X509parse.
5086
5087Changes
5088 * Error codes are not (necessarily) negative. Keep
5089 this is mind when checking for errors.
5090 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
5091 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
5092 * Changed interface for AES and Camellia setkey functions
5093 to indicate invalid key lengths.
5094
5095Bug fixes
5096 * Fixed include location of endian.h on FreeBSD (found by
5097 Gabriel)
5098 * Fixed include location of endian.h and name clash on
5099 Apples (found by Martin van Hensbergen)
5100 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
5101 required HMAC ipad and opad variables are not cleared.
5102 (found by code coverage tests)
Hanno Becker01a0e072017-07-26 11:49:40 +01005103 * Prevented use of long long in bignum if
Paul Bakker99ed6782011-01-05 14:48:42 +00005104 POLARSSL_HAVE_LONGLONG not defined (found by Giles
5105 Bathgate).
5106 * Fixed incorrect handling of negative strings in
5107 mpi_read_string() (found by code coverage tests).
5108 * Fixed segfault on handling empty rsa_context in
5109 rsa_check_pubkey() and rsa_check_privkey() (found by
5110 code coverage tests).
5111 * Fixed incorrect handling of one single negative input
5112 value in mpi_add_abs() (found by code coverage tests).
5113 * Fixed incorrect handling of negative first input
5114 value in mpi_sub_abs() (found by code coverage tests).
5115 * Fixed incorrect handling of negative first input
5116 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
5117 change also affects mpi_write_string() (found by code
5118 coverage tests).
5119 * Corrected is_prime() results for 0, 1 and 2 (found by
5120 code coverage tests).
5121 * Fixed Camellia and XTEA for 64-bit Windows systems.
5122
5123= Version 0.11.1 released on 2009-05-17
5124 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
5125 SHA-512 in rsa_pkcs1_sign()
5126
5127= Version 0.11.0 released on 2009-05-03
5128 * Fixed a bug in mpi_gcd() so that it also works when both
5129 input numbers are even and added testcases to check
5130 (found by Pierre Habouzit).
5131 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
5132 one way hash functions with the PKCS#1 v1.5 signing and
5133 verification.
5134 * Fixed minor bug regarding mpi_gcd located within the
5135 POLARSSL_GENPRIME block.
5136 * Fixed minor memory leak in x509parse_crt() and added better
5137 handling of 'full' certificate chains (found by Mathias
5138 Olsson).
5139 * Centralized file opening and reading for x509 files into
5140 load_file()
5141 * Made definition of net_htons() endian-clean for big endian
5142 systems (Found by Gernot).
5143 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
Hanno Becker01a0e072017-07-26 11:49:40 +01005144 padlock and timing code.
Paul Bakker99ed6782011-01-05 14:48:42 +00005145 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
5146 responsible for crashes and unwanted behaviour.
5147 * Added support for Certificate Revocation List (CRL) parsing.
5148 * Added support for CRL revocation to x509parse_verify() and
5149 SSL/TLS code.
5150 * Fixed compatibility of XTEA and Camellia on a 64-bit system
5151 (found by Felix von Leitner).
5152
5153= Version 0.10.0 released on 2009-01-12
5154 * Migrated XySSL to PolarSSL
5155 * Added XTEA symmetric cipher
5156 * Added Camellia symmetric cipher
5157 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
5158 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
5159 * Fixed dangerous bug that can cause a heap overflow in
5160 rsa_pkcs1_decrypt (found by Christophe Devine)
5161
5162================================================================
5163XySSL ChangeLog
5164
5165= Version 0.9 released on 2008-03-16
5166
5167 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
5168 * Enabled support for large files by default in aescrypt2.c
5169 * Preliminary openssl wrapper contributed by David Barrett
5170 * Fixed a bug in ssl_write() that caused the same payload to
5171 be sent twice in non-blocking mode when send returns EAGAIN
5172 * Fixed ssl_parse_client_hello(): session id and challenge must
5173 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
5174 * Added user-defined callback debug function (Krystian Kolodziej)
5175 * Before freeing a certificate, properly zero out all cert. data
5176 * Fixed the "mode" parameter so that encryption/decryption are
5177 not swapped on PadLock; also fixed compilation on older versions
5178 of gcc (bug reported by David Barrett)
5179 * Correctly handle the case in padlock_xcryptcbc() when input or
Antonin Décimo36e89b52019-01-23 15:24:37 +01005180 output data is non-aligned by falling back to the software
Paul Bakker99ed6782011-01-05 14:48:42 +00005181 implementation, as VIA Nehemiah cannot handle non-aligned buffers
5182 * Fixed a memory leak in x509parse_crt() which was reported by Greg
5183 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
5184 Matthew Page who reported several bugs
5185 * Fixed x509_get_ext() to accept some rare certificates which have
5186 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
5187 * Added support on the client side for the TLS "hostname" extension
5188 (patch contributed by David Patino)
5189 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
5190 string is passed as the CN (bug reported by spoofy)
5191 * Added an option to enable/disable the BN assembly code
5192 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
5193 * Disabled obsolete hash functions by default (MD2, MD4); updated
5194 selftest and benchmark to not test ciphers that have been disabled
5195 * Updated x509parse_cert_info() to correctly display byte 0 of the
5196 serial number, setup correct server port in the ssl client example
5197 * Fixed a critical denial-of-service with X.509 cert. verification:
5198 peer may cause xyssl to loop indefinitely by sending a certificate
5199 for which the RSA signature check fails (bug reported by Benoit)
5200 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
5201 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
5202 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
5203 * Modified ssl_parse_client_key_exchange() to protect against
5204 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
5205 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
5206 * Updated rsa_gen_key() so that ctx->N is always nbits in size
5207 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
5208 David Barrett and Dusan Semen
5209
5210= Version 0.8 released on 2007-10-20
5211
5212 * Modified the HMAC functions to handle keys larger
5213 than 64 bytes, thanks to Stephane Desneux and gary ng
5214 * Fixed ssl_read_record() to properly update the handshake
5215 message digests, which fixes IE6/IE7 client authentication
5216 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
5217 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
5218 * Added user-defined callbacks for handling I/O and sessions
5219 * Added lots of debugging output in the SSL/TLS functions
5220 * Added preliminary X.509 cert. writing by Pascal Vizeli
5221 * Added preliminary support for the VIA PadLock routines
5222 * Added AES-CFB mode of operation, contributed by chmike
5223 * Added an SSL/TLS stress testing program (ssl_test.c)
5224 * Updated the RSA PKCS#1 code to allow choosing between
5225 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
5226 * Updated ssl_read() to skip 0-length records from OpenSSL
5227 * Fixed the make install target to comply with *BSD make
5228 * Fixed a bug in mpi_read_binary() on 64-bit platforms
5229 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
5230 * Fixed a long standing memory leak in mpi_is_prime()
5231 * Replaced realloc with malloc in mpi_grow(), and set
5232 the sign of zero as positive in mpi_init() (reported
5233 by Jonathan M. McCune)
5234
5235= Version 0.7 released on 2007-07-07
5236
5237 * Added support for the MicroBlaze soft-core processor
5238 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
5239 connections from being established with non-blocking I/O
5240 * Fixed a couple bugs in the VS6 and UNIX Makefiles
5241 * Fixed the "PIC register ebx clobbered in asm" bug
5242 * Added HMAC starts/update/finish support functions
5243 * Added the SHA-224, SHA-384 and SHA-512 hash functions
5244 * Fixed the net_set_*block routines, thanks to Andreas
5245 * Added a few demonstration programs: md5sum, sha1sum,
5246 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
5247 * Added new bignum import and export helper functions
5248 * Rewrote README.txt in program/ssl/ca to better explain
5249 how to create a test PKI
5250
5251= Version 0.6 released on 2007-04-01
5252
5253 * Ciphers used in SSL/TLS can now be disabled at compile
5254 time, to reduce the memory footprint on embedded systems
5255 * Added multiply assembly code for the TriCore and modified
5256 havege_struct for this processor, thanks to David Patiño
5257 * Added multiply assembly code for 64-bit PowerPCs,
5258 thanks to Peking University and the OSU Open Source Lab
5259 * Added experimental support of Quantum Cryptography
5260 * Added support for autoconf, contributed by Arnaud Cornet
5261 * Fixed "long long" compilation issues on IA-64 and PPC64
5262 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
5263 was not being correctly defined on ARM and MIPS
5264
5265= Version 0.5 released on 2007-03-01
5266
5267 * Added multiply assembly code for SPARC and Alpha
5268 * Added (beta) support for non-blocking I/O operations
5269 * Implemented session resuming and client authentication
5270 * Fixed some portability issues on WinCE, MINIX 3, Plan9
5271 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
5272 * Improved the performance of the EDH key exchange
5273 * Fixed a bug that caused valid packets with a payload
5274 size of 16384 bytes to be rejected
5275
5276= Version 0.4 released on 2007-02-01
5277
5278 * Added support for Ephemeral Diffie-Hellman key exchange
5279 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
5280 * Various improvement to the modular exponentiation code
5281 * Rewrote the headers to generate the API docs with doxygen
5282 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
5283 generated) and in ssl_parse_client_hello (max. client
5284 version was not properly set), thanks to Didier Rebeix
5285 * Fixed another bug in ssl_parse_client_hello: clients with
5286 cipherlists larger than 96 bytes were incorrectly rejected
5287 * Fixed a couple memory leak in x509_read.c
5288
5289= Version 0.3 released on 2007-01-01
5290
5291 * Added server-side SSLv3 and TLSv1.0 support
5292 * Multiple fixes to enhance the compatibility with g++,
5293 thanks to Xosé Antón Otero Ferreira
5294 * Fixed a bug in the CBC code, thanks to dowst; also,
Paul Bakker60b1d102013-10-29 10:02:51 +01005295 the bignum code is no longer dependent on long long
Paul Bakker99ed6782011-01-05 14:48:42 +00005296 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
5297 * Updated timing.c for improved compatibility with i386
5298 and 486 processors, thanks to Arnaud Cornet
5299
5300= Version 0.2 released on 2006-12-01
5301
5302 * Updated timing.c to support ARM and MIPS arch
5303 * Updated the MPI code to support 8086 on MSVC 1.5
5304 * Added the copyright notice at the top of havege.h
5305 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
5306 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
5307 * Fixed a bug reported by Torsten Lauter in ssl_read_record
5308 * Fixed a bug in rsa_check_privkey that would wrongly cause
5309 valid RSA keys to be dismissed (thanks to oldwolf)
5310 * Fixed a bug in mpi_is_prime that caused some primes to fail
5311 the Miller-Rabin primality test
5312
5313 I'd also like to thank Younès Hafri for the CRUX linux port,
5314 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
5315 who maintains the Debian package :-)
5316
5317= Version 0.1 released on 2006-11-01