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Paul Bakkerdaae3b72015-02-08 15:49:54 +01001mbed TLS ChangeLog (Sorted per branch, date)
Paul Bakker99ed6782011-01-05 14:48:42 +00002
Dave Rodgman74755e42021-03-08 18:35:44 +00003= mbed TLS 2.26.0 branch released 2021-03-08
4
5API changes
6 * Renamed the PSA Crypto API output buffer size macros to bring them in line
7 with version 1.0.0 of the specification.
8 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
9 in bits rather than bytes, with an additional flag to indicate if the
10 size may have been rounded up to a whole number of bytes.
11 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
12 with version 1.0.0 of the specification.
13
14Default behavior changes
15 * In mbedtls_rsa_context objects, the ver field was formerly documented
16 as always 0. It is now reserved for internal purposes and may take
17 different values.
18
19New deprecations
20 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
21 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
22 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
23 deprecated.
24 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
25 have been renamed, and the old names deprecated.
26
27Features
28 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
29 CTR_DRBG is used by default if it is available, but you can override
30 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
31 Fix #3354.
32 * Automatic fallback to a software implementation of ECP when
33 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
34 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
35 * The PSA crypto subsystem can now be configured to use less static RAM by
36 tweaking the setting for the maximum amount of keys simultaneously in RAM.
37 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
38 can exist simultaneously. It has a sensible default if not overridden.
39 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
40 now use an external random generator instead of the library's own
41 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
42 and see the documentation of mbedtls_psa_external_get_random() for details.
43 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
44 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
45 random generator with mbedtls_xxx functions. See the documentation of
46 mbedtls_psa_get_random() for details.
47 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
48 minimum MAC or tag length thanks to the new wildcards
49 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
50 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
51
52Security
53 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
54 nonce from entropy. Applications were affected if they called
55 mbedtls_ctr_drbg_set_nonce_len(), if they called
56 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
57 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
58 In such cases, a random nonce was necessary to achieve the advertised
59 security strength, but the code incorrectly used a constant instead of
60 entropy from the nonce.
61 Found by John Stroebel in #3819 and fixed in #3973.
62 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
63 |A| - |B| where |B| is larger than |A| and has more limbs (so the
64 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
65 applications calling mbedtls_mpi_sub_abs() directly are affected:
66 all calls inside the library were safe since this function is
67 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
68 * Fix an errorneous estimation for an internal buffer in
69 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
70 value the function might fail to write a private RSA keys of the largest
71 supported size.
72 Found by Daniel Otte, reported in #4093 and fixed in #4094.
73 * Fix a stack buffer overflow with mbedtls_net_poll() and
74 mbedtls_net_recv_timeout() when given a file descriptor that is
75 beyond FD_SETSIZE. Reported by FigBug in #4169.
76 * Guard against strong local side channel attack against base64 tables by
77 making access aceess to them use constant flow code.
78
79Bugfix
80 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
81 * Fix memory leak that occured when calling psa_close_key() on a
82 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
83 * Fix an incorrect error code if an RSA private operation glitched.
84 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
85 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
86 is enabled, on platforms where initializing a mutex allocates resources.
87 This was a regression introduced in the previous release. Reported in
88 #4017, #4045 and #4071.
89 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
90 twice is safe. This happens for RSA when some Mbed TLS library functions
91 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
92 enabled on platforms where freeing a mutex twice is not safe.
93 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
94 when MBEDTLS_THREADING_C is enabled on platforms where initializing
95 a mutex allocates resources.
96 * Fixes a bug where, if the library was configured to include support for
97 both the old SE interface and the new PSA driver interface, external keys were
98 not loaded from storage. This was fixed by #3996.
99 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
100 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
101 include this extension in all CA certificates that contain public keys
102 used to validate digital signatures on certificates and MUST mark the
103 extension as critical in such certificates." Previous to this change,
104 the extension was always marked as non-critical. This was fixed by
105 #3698.
106
107Changes
108 * A new library C file psa_crypto_client.c has been created to contain
109 the PSA code needed by a PSA crypto client when the PSA crypto
110 implementation is not included into the library.
111 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
112 now uses the getrandom syscall instead of reading from /dev/urandom.
113
Janos Follath56b38c22020-12-09 01:34:21 +0000114= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +0000115
116API changes
117 * The numerical values of the PSA Crypto API macros have been updated to
118 conform to version 1.0.0 of the specification.
119 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
120 The underlying stream cipher is determined by the key type
121 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
122 * The functions mbedtls_cipher_auth_encrypt() and
123 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
124 as they have no way to check if the output buffer is large enough.
125 Please use mbedtls_cipher_auth_encrypt_ext() and
126 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
127 Cryptofuzz. Fixes #3665.
128
129Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +0000130 * Update the minimum required CMake version to 2.8.12. This silences a
131 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +0000132
133New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +0100134 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000135 Use PSA_ALG_STREAM_CIPHER instead.
136 * The functions mbedtls_cipher_auth_encrypt() and
137 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
138 functions mbedtls_cipher_auth_encrypt_ext() and
139 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
140 these new functions always append the tag to the ciphertext, and include
141 the tag in the ciphertext length.
142
143Features
Janos Follathd6ce1162020-12-09 16:32:01 +0000144 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
145 ciphers, asymmetric signing/verification and key generation, validate_key
146 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +0000147 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000148 * In PSA, allow using a key declared with a base key agreement algorithm
149 in combined key agreement and derivation operations, as long as the key
150 agreement algorithm in use matches the algorithm the key was declared with.
151 This is currently non-standard behaviour, but expected to make it into a
152 future revision of the PSA Crypto standard.
153 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
154 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
155 external CMake projects that include this one to avoid CMake target name
156 clashes. The default value of this variable is "", so default target names
157 are unchanged.
158 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
159 Pascal, improved by Ron Eldor.
160 * In the PSA API, it is no longer necessary to open persistent keys:
161 operations now accept the key identifier. The type psa_key_handle_t is now
162 identical to psa_key_id_t instead of being platform-defined. This bridges
163 the last major gap to compliance with the PSA Cryptography specification
164 version 1.0.0. Opening persistent keys is still supported for backward
165 compatibility, but will be deprecated and later removed in future
166 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000167 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
168 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
169 1.0.0 of the PSA Crypto API specification.
170
171Security
172 * The functions mbedtls_cipher_auth_encrypt() and
173 mbedtls_cipher_auth_decrypt() would write past the minimum documented
174 size of the output buffer when used with NIST_KW. As a result, code using
175 those functions as documented with NIST_KW could have a buffer overwrite
176 of up to 15 bytes, with consequences ranging up to arbitrary code
177 execution depending on the location of the output buffer.
178 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
179 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
180 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
181 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
182 which is how most uses of randomization in asymmetric cryptography
183 (including key generation, intermediate value randomization and blinding)
184 are implemented. This could cause failures or the silent use of non-random
185 values. A random generator can fail if it needs reseeding and cannot not
186 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
187 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
188 * Fix a compliance issue whereby we were not checking the tag on the
189 algorithm parameters (only the size) when comparing the signature in the
190 description part of the cert to the real signature. This meant that a
191 NULL algorithm parameters entry would look identical to an array of REAL
192 (size zero) to the library and thus the certificate would be considered
193 valid. However, if the parameters do not match in *any* way then the
194 certificate should be considered invalid, and indeed OpenSSL marks these
195 certs as invalid when mbedtls did not.
196 Many thanks to guidovranken who found this issue via differential fuzzing
197 and reported it in #3629.
198 * Zeroising of local buffers and variables which are used for calculations
199 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
200 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
201 functions to erase sensitive data from memory. Reported by
202 Johan Malmgren and Johan Uppman Bruce from Sectra.
203
204Bugfix
Janos Follath76027f62020-12-09 16:28:35 +0000205 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
206 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000207 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
208 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
209 * Include the psa_constant_names generated source code in the source tree
210 instead of generating it at build time. Fixes #3524.
211 * Fix rsa_prepare_blinding() to retry when the blinding value is not
212 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
213 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
214 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
215 Fixes #3647.
216 * Use socklen_t on Android and other POSIX-compliant system
217 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
218 Fix #3432.
219 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
220 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
221 psa_cipher_* functions compliant with the PSA Crypto API specification.
222 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
223 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
224 only the curves that support ECDSA, filter the list with
225 mbedtls_ecdsa_can_do().
226 * Fix psa_generate_key() returning an error when asked to generate
227 an ECC key pair on Curve25519 or secp244k1.
228 * Fix psa_key_derivation_output_key() to allow the output of a combined key
229 agreement and subsequent key derivation operation to be used as a key
230 inside of the PSA Crypto core.
231 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
232 chars. Fixes a build failure on platforms where char is unsigned. Fixes
233 #3794.
234 * Fix an off-by-one error in the additional data length check for
235 CCM, which allowed encryption with a non-standard length field.
236 Fixes #3719.
237 * Correct the default IV size for mbedtls_cipher_info_t structures using
238 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
239 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
240 defined. Fix contributed in #3571.
241 * Fix conditions for including string.h in error.c. Fixes #3866.
242 * psa_set_key_id() now also sets the lifetime to persistent for keys located
243 in a secure element.
244 * Attempting to create a volatile key with a non-zero key identifier now
245 fails. Previously the key identifier was just ignored when creating a
246 volatile key.
247 * Attempting to create or register a key with a key identifier in the vendor
248 range now fails.
249 * Fix build failures on GCC 11. Fixes #3782.
250 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
251 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
252 (an error condition) and the second operand was aliased to the result.
253 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
254 could go undetected, resulting in an incorrect result.
255 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
256 Fixes #2927.
257 * In PEM writing functions, fill the trailing part of the buffer with null
258 bytes. This guarantees that the corresponding parsing function can read
259 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
260 until this property was inadvertently broken in Mbed TLS 2.19.0.
261 Fixes #3682.
262 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
263 option on. In this configuration key management methods that are required
264 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
265 Fixes #3818. Reported by John Stroebel.
266
267Changes
268 * Reduce stack usage significantly during sliding window exponentiation.
269 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
270 * The PSA persistent storage format is updated to always store the key bits
271 attribute. No automatic upgrade path is provided. Previously stored keys
272 must be erased, or manually upgraded based on the key storage format
273 specification (docs/architecture/mbed-crypto-storage-specification.md).
274 Fixes #3740.
275 * Remove the zeroization of a pointer variable in AES rounds. It was valid
276 but spurious and misleading since it looked like a mistaken attempt to
277 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
278 Leti, France.
279
Janos Follath6012f0e2020-08-26 15:32:10 +0100280= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100281
282API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100283 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
284 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
285 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100286 Rename associated macros as well:
287 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
288 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
289 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
290 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
291
292Default behavior changes
293 * Stop storing persistent information about externally stored keys created
294 through PSA Crypto with a volatile lifetime. Reported in #3288 and
295 contributed by Steven Cooreman in #3382.
296
297Features
298 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
299 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
300 * Support building on e2k (Elbrus) architecture: correctly enable
301 -Wformat-signedness, and fix the code that causes signed-one-bit-field
302 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
303 <akemi_homura@kurisa.ch>.
304
305Security
306 * Fix a vulnerability in the verification of X.509 certificates when
307 matching the expected common name (the cn argument of
308 mbedtls_x509_crt_verify()) with the actual certificate name: when the
309 subjecAltName extension is present, the expected name was compared to any
310 name in that extension regardless of its type. This means that an
311 attacker could for example impersonate a 4-bytes or 16-byte domain by
312 getting a certificate for the corresponding IPv4 or IPv6 (this would
313 require the attacker to control that IP address, though). Similar attacks
314 using other subjectAltName name types might be possible. Found and
315 reported by kFYatek in #3498.
316 * When checking X.509 CRLs, a certificate was only considered as revoked if
317 its revocationDate was in the past according to the local clock if
318 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
319 certificates were never considered as revoked. On builds with
320 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
321 example, an untrusted OS attacking a secure enclave) could prevent
322 revocation of certificates via CRLs. Fixed by no longer checking the
323 revocationDate field, in accordance with RFC 5280. Reported by
324 yuemonangong in #3340. Reported independently and fixed by
325 Raoul Strackx and Jethro Beekman in #3433.
326 * In (D)TLS record decryption, when using a CBC ciphersuites without the
327 Encrypt-then-Mac extension, use constant code flow memory access patterns
328 to extract and check the MAC. This is an improvement to the existing
329 countermeasure against Lucky 13 attacks. The previous countermeasure was
330 effective against network-based attackers, but less so against local
331 attackers. The new countermeasure defends against local attackers, even
332 if they have access to fine-grained measurements. In particular, this
333 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
334 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
335 (University of Florida) and Dave Tian (Purdue University).
336 * Fix side channel in RSA private key operations and static (finite-field)
337 Diffie-Hellman. An adversary with precise enough timing and memory access
338 information (typically an untrusted operating system attacking a secure
339 enclave) could bypass an existing counter-measure (base blinding) and
340 potentially fully recover the private key.
341 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
342 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
343 for pinpointing the problematic code.
344 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
345 application data from memory. Reported in #689 by
346 Johan Uppman Bruce of Sectra.
347
348Bugfix
349 * Library files installed after a CMake build no longer have execute
350 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100351 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
352 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100353 Reported in #3451 and fix contributed in #3452 by okhowang.
354 * Fix the endianness of Curve25519 keys imported/exported through the PSA
355 APIs. psa_import_key and psa_export_key will now correctly expect/output
356 Montgomery keys in little-endian as defined by RFC7748. Contributed by
357 Steven Cooreman in #3425.
358 * Fix build errors when the only enabled elliptic curves are Montgomery
359 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
360 also fixes missing declarations reported by Steven Cooreman in #1147.
361 * Fix self-test failure when the only enabled short Weierstrass elliptic
362 curve is secp192k1. Fixes #2017.
363 * PSA key import will now correctly import a Curve25519/Curve448 public key
364 instead of erroring out. Contributed by Steven Cooreman in #3492.
365 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
366 lower bits. Fix contributed in #3540.
367 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
368 conditions. Reported and fix suggested by Guido Vranken in #3486.
369 * Fix bug in redirection of unit test outputs on platforms where stdout is
370 defined as a macro. First reported in #2311 and fix contributed in #3528.
371
372Changes
373 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
374 in #3478 and fix contributed in #3479 by okhowang.
375 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
376 previously could lead to stack overflow on constrained devices.
377 Contributed by Doru Gucea and Simon Leet in #3464.
378 * Undefine the ASSERT macro before defining it locally, in case it is defined
379 in a platform header. Contributed by Abdelatif Guettouche in #3557.
380 * Update copyright notices to use Linux Foundation guidance. As a result,
381 the copyright of contributors other than Arm is now acknowledged, and the
382 years of publishing are no longer tracked in the source files. This also
383 eliminates the need for the lines declaring the files to be part of
384 MbedTLS. Fixes #3457.
385 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
386 example applications which allows to provide a password for the key file
387 specified through the existing key_file argument. This allows the use of
388 these applications with password-protected key files. Analogously but for
389 ssl_server2 only, add the command line parameter key_pwd2 which allows to
390 set a password for the key file provided through the existing key_file2
391 argument.
392
Janos Follath13cba682020-06-26 12:40:52 +0100393= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +0100394
395Default behavior changes
396 * In the experimental PSA secure element interface, change the encoding of
397 key lifetimes to encode a persistence level and the location. Although C
398 prototypes do not effectively change, code calling
399 psa_register_se_driver() must be modified to pass the driver's location
400 instead of the keys' lifetime. If the library is upgraded on an existing
401 device, keys created with the old lifetime value will not be readable or
402 removable through Mbed TLS after the upgrade.
403
404Features
405 * New functions in the error module return constant strings for
406 high- and low-level error codes, complementing mbedtls_strerror()
407 which constructs a string for any error code, including compound
408 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
409 in #3176.
410 * The new utility programs/ssl/ssl_context_info prints a human-readable
411 dump of an SSL context saved with mbedtls_ssl_context_save().
412 * Add support for midipix, a POSIX layer for Microsoft Windows.
413 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
414 parsing unsupported certificate extensions via user provided callback.
415 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
416 a solution to #3241.
417 * Pass the "certificate policies" extension to the callback supplied to
418 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
419 policies (#3419).
420 * Added support to entropy_poll for the kern.arandom syscall supported on
421 some BSD systems. Contributed by Nia Alarie in #3423.
422 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
423
424Security
425 * Fix a side channel vulnerability in modular exponentiation that could
426 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
427 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
428 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
429 Strackx (Fortanix) in #3394.
430 * Fix side channel in mbedtls_ecp_check_pub_priv() and
431 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
432 private key that didn't include the uncompressed public key), as well as
433 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
434 f_rng argument. An attacker with access to precise enough timing and
435 memory access information (typically an untrusted operating system
436 attacking a secure enclave) could fully recover the ECC private key.
437 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
438 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
439 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
440 macros). This would cause the original Lucky 13 attack to be possible in
441 those configurations, allowing an active network attacker to recover
442 plaintext after repeated timing measurements under some conditions.
443 Reported and fix suggested by Luc Perneel in #3246.
444
445Bugfix
446 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
447 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
448 the example programs. Reported in #1430 and fix contributed by irwir.
449 * Fix undefined behavior in X.509 certificate parsing if the
450 pathLenConstraint basic constraint value is equal to INT_MAX.
451 The actual effect with almost every compiler is the intended
452 behavior, so this is unlikely to be exploitable anywhere. #3192
453 * Fix issue with a detected HW accelerated record error not being exposed
454 due to shadowed variable. Contributed by Sander Visser in #3310.
455 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
456 NULL pointer argument. Contributed by Sander Visser in #3312.
457 * Fix potential linker errors on dual world platforms by inlining
458 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
459 from psa_crypto.c. Fixes #3300.
460 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
461 #2855.
462 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
463 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
464 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
465 * Remove unused macros from MSVC projects. Reported in #3297 and fix
466 submitted in #3333 by irwir.
467 * Add additional bounds checks in ssl_write_client_hello() preventing
468 output buffer overflow if the configuration declared a buffer that was
469 too small.
470 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
471 fix submitted in #3421 by Nia Alarie.
472 * Fix building library/net_sockets.c and the ssl_mail_client program on
473 NetBSD. Contributed by Nia Alarie in #3422.
474 * Fix false positive uninitialised variable reported by cpp-check.
475 Contributed by Sander Visser in #3311.
476 * Update iv and len context pointers manually when reallocating buffers
477 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
478 when receiving a connection with CID, when these fields were shifted
479 in ssl_parse_record_header().
480
481Changes
482 * Fix warnings about signedness issues in format strings. The build is now
483 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
484 in #3153.
485 * Fix minor performance issue in operations on Curve25519 caused by using a
486 suboptimal modular reduction in one place. Found and fix contributed by
487 Aurelien Jarno in #3209.
488 * Combine identical cases in switch statements in md.c. Contributed
489 by irwir in #3208.
490 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
491 by irwir in #3150.
492 * Unify the example programs termination to call mbedtls_exit() instead of
493 using a return command. This has been done to enable customization of the
494 behavior in bare metal environments.
495 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
496 Contributed by Koh M. Nakagawa in #3326.
497 * Use FindPython3 when cmake version >= 3.15.0
498 * Abort the ClientHello writing function as soon as some extension doesn't
499 fit into the record buffer. Previously, such extensions were silently
500 dropped. As a consequence, the TLS handshake now fails when the output
501 buffer is not large enough to hold the ClientHello.
502 * The unit tests now rely on header files in tests/include/test and source
503 files in tests/src. When building with make or cmake, the files in
504 tests/src are compiled and the resulting object linked into each test
505 executable.
506 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
507 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
508 coutermeasures. If side channels are not a concern, this dependency can
509 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
510 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
511 Martinho. #3147
512 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
513 in #3182 and fix submitted by irwir. #3217
514 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
515
Janos Follath876e0252020-04-08 17:15:18 +0100516= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000517
518New deprecations
519 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
520 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400521 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
522 mbedtls_ssl_get_output_max_frag_len() and
523 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
524 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000525
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100526Security
527 * Fix issue in DTLS handling of new associations with the same parameters
528 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
529 the server could cause it to drop established associations with
530 legitimate clients, resulting in a Denial of Service. This could only
531 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
532 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +0100533 * Fix side channel in ECC code that allowed an adversary with access to
534 precise enough timing and memory access information (typically an
535 untrusted operating system attacking a secure enclave) to fully recover
536 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
537 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +0200538 * Fix a potentially remotely exploitable buffer overread in a
539 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100540
Janos Follathee856862020-04-08 16:58:36 +0100541Features
542 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
543 resizes the I/O buffers before and after handshakes, reducing the memory
544 consumption during application data transfer.
545
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100546Bugfix
547 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
548 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +0300549 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
550 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +0100551 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
552 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100553
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100554Changes
555 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
556 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400557 * Split mbedtls_ssl_get_max_frag_len() into
558 mbedtls_ssl_get_output_max_frag_len() and
559 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
560 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
561 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100562
Janos Follath138c2ea2020-02-19 14:32:24 +0000563= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +0000564
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000565New deprecations
566 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
567 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +0000568 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +0100569 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
570 library which allows TLS authentication to use keys stored in a
571 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000572
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100573Security
574 * Fix potential memory overread when performing an ECDSA signature
575 operation. The overread only happens with cryptographically low
576 probability (of the order of 2^-n where n is the bitsize of the curve)
577 unless the RNG is broken, and could result in information disclosure or
578 denial of service (application crash or extra resource consumption).
579 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100580 * To avoid a side channel vulnerability when parsing an RSA private key,
581 read all the CRT parameters from the DER structure rather than
582 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
583 Brumley. Reported and fix contributed by Jack Lloyd.
584 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100585
586Features
587 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
588 support without SHA-384.
589
590API changes
591 * Change the encoding of key types and curves in the PSA API. The new
592 values are aligned with the upcoming release of the PSA Crypto API
593 specification version 1.0.0. The main change which may break some
594 existing code is that elliptic curve key types no longer encode the
595 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
596 a curve family and the key size determines the exact curve (for example,
597 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
598
Jaeden Amero62236d72020-01-24 18:20:22 +0000599Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +0100600 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +0100601 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
602 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +0100603 * Fix some false-positive uninitialized variable warnings in X.509. Fix
604 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100605 * Fix a possible error code mangling in psa_mac_verify_finish() when
606 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +0000607 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
608 RSA keys that would later be rejected by functions expecting private
609 keys. Found by Catena cyber using oss-fuzz (issue 20467).
610 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
611 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +0000612
Jaeden Amerod56a2af2020-01-15 18:07:20 +0000613= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +0300614
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100615Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100616 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100617 entropy function to obtain entropy for a nonce if the entropy size is less
618 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100619 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100620 nonce length to 0.
621
622Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100623 * Enforce that mbedtls_entropy_func() gathers a total of
624 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100625 default configuration, on a platform with a single entropy source, the
626 entropy module formerly only grabbed 32 bytes, which is good enough for
627 security if the source is genuinely strong, but less than the expected 64
628 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +0100629 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
630 mbedtls_internal_aes_decrypt() before exiting the function. The value of
631 these variables can be used to recover the last round key. To follow best
632 practice and to limit the impact of buffer overread vulnerabilities (like
633 Heartbleed) we need to zeroize them before exiting the function.
634 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
635 Grant Hernandez, and Kevin Butler (University of Florida) and
636 Dave Tian (Purdue University).
637 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
638 constant time/constant trace, so side channel attacks can retrieve the
639 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
640 to have only large prime factors), and then, by brute force, recover the
641 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
642 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
643 timings on the comparison in the key generation enabled the attacker to
644 learn leading bits of the ephemeral key used during ECDSA signatures and to
645 recover the private key. Reported by Jeremy Dubeuf.
646 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
647 failures could happen with alternative implementations of AES. Bug
648 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
649 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100650
651Features
652 * Key derivation inputs in the PSA API can now either come from a key object
653 or from a buffer regardless of the step type.
654 * The CTR_DRBG module can grab a nonce from the entropy source during the
655 initial seeding. The default nonce length is chosen based on the key size
656 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100657 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100658 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100659 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100660
661API changes
662 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
663 key derivation function, use a buffer instead (this is now always
664 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100665 * Rename psa_asymmetric_sign() to psa_sign_hash() and
666 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100667
irwir6c0da642019-09-26 21:07:41 +0300668Bugfix
669 * Fix an incorrect size in a debugging message. Reported and fix
670 submitted by irwir. Fixes #2717.
671 * Fix an unused variable warning when compiling without DTLS.
672 Reported and fix submitted by irwir. Fixes #2800.
673 * Remove a useless assignment. Reported and fix submitted by irwir.
674 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100675 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +0100676 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100677 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100678 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100679 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100680 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100681 * mbedtls_ctr_drbg_set_entropy_len() and
682 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
683 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100684
685Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100686 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100687 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100688 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100689 before).
690 * Variables containing error codes are now initialized to an error code
691 rather than success, so that coding mistakes or memory corruption tends to
692 cause functions to return this error code rather than a success. There are
693 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +0100694 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100695 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100696 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100697 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +0100698 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100699 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100700 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +0300701
Jaeden Amero914a5072019-09-18 13:35:57 +0100702= mbed TLS 2.19.1 branch released 2019-09-16
703
704Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -0600705 * Declare include headers as PUBLIC to propagate to CMake project consumers
706 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +0100707 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
708 TLS sessions with tools like Wireshark.
709
710API Changes
711 * Make client_random and server_random const in
712 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
713 from modifying the client/server hello.
714
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200715Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +0100716 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200717 contributed by apple-ihack-geek in #2663.
718
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100719= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000720
Gilles Peskine52157832018-08-11 00:51:04 +0200721Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100722 * Fix a missing error detection in ECJPAKE. This could have caused a
723 predictable shared secret if a hardware accelerator failed and the other
724 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +0200725 * When writing a private EC key, use a constant size for the private
726 value, as specified in RFC 5915. Previously, the value was written
727 as an ASN.1 INTEGER, which caused the size of the key to leak
728 about 1 bit of information on average and could cause the value to be
729 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +0000730 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
731 implement blinding. Because of this for the same key and message the same
732 blinding value was generated. This reduced the effectiveness of the
733 countermeasure and leaked information about the private key through side
734 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +0200735
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000736Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200737 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +0200738 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200739 store it in non-volatile storage, and later using it for TLS session
740 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +0300741 * Add a new API function mbedtls_ssl_check_record() to allow checking that
742 an incoming record is valid, authentic and has not been seen before. This
743 feature can be used alongside Connection ID and SSL context serialisation.
744 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
745 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100746 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
747 (https://project-everest.github.io/). It can be enabled at compile time
748 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
749 verified and significantly faster, but is only supported on x86 platforms
750 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
751 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +0100752 * Add mbedtls_net_close(), enabling the building of forking servers where
753 the parent process closes the client socket and continue accepting, and
754 the child process closes the listening socket and handles the client
755 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000756
Gilles Peskine60b29d62019-08-14 18:37:59 +0200757API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +0200758 * Add DER-encoded test CRTs to library/certs.c, allowing
759 the example programs ssl_server2 and ssl_client2 to be run
760 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
761 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100762 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
763 list all curves for which at least one of ECDH or ECDSA is supported, not
764 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
765 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
766 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100767 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
768 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
769 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +0000770
771New deprecations
772 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
773 RNG function as an input.
774 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
775 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +0200776
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000777Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +0100778 * Fix missing bounds checks in X.509 parsing functions that could
779 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
780 * Fix multiple X.509 functions previously returning ASN.1 low-level error
781 codes to always wrap these codes into X.509 high level error codes before
782 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +0100783 * Fix to allow building test suites with any warning that detects unused
784 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +0100785 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +0100786 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +0100787 * Fix build failure when building with mingw on Windows by including
788 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +0100789 * Fix Visual Studio Release x64 build configuration by inheriting
790 PlatformToolset from the project configuration. Fixes #1430 reported by
791 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +0100792 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
793 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +0200794 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +0100795 * Avoid use of statically sized stack buffers for certificate writing.
796 This previously limited the maximum size of DER encoded certificates
797 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -0400798 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +0200799 * Update test certificates that were about to expire. Reported by
800 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +0200801 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
802 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
803 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +0100804 * Fix propagation of restart contexts in restartable EC operations.
805 This could previously lead to segmentation faults in builds using an
806 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +0100807 * Fix memory leak in in mpi_miller_rabin(). Contributed by
808 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -0600809 * Improve code clarity in x509_crt module, removing false-positive
810 uninitialized variable warnings on some recent toolchains (GCC8, etc).
811 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +0100812 * Fix bug in endianness conversion in bignum module. This lead to
813 functionally incorrect code on bigendian systems which don't have
814 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +0100815
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000816Changes
Hanno Becker136512b2019-05-30 11:16:02 +0100817 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +0200818 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
819 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +0100820 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -0600821 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
822 docker-env.sh) to simplify running test suites on a Linux host. Contributed
823 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +0100824 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
825 test runs without variability. Contributed by Philippe Antoine (Catena
826 cyber) in #2681.
827 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +0200828 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
829 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100830 * Remove the crypto part of the library from Mbed TLS. The crypto
831 code and tests are now only available via Mbed Crypto, which
832 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000833
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100834= mbed TLS 2.18.1 branch released 2019-07-12
835
Jaeden Ameroded319d2019-05-30 13:18:24 +0100836Bugfix
837 * Fix build failure when building with mingw on Windows by including
838 stdarg.h where needed. Fixes #2656.
839
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100840Changes
841 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
842 Ashley Duncan in #2609.
843
Jaeden Amerob1c72f52019-06-11 17:18:09 +0100844= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500845
Hanno Beckerac4172c2019-01-31 09:27:04 +0000846Features
847 * Add the Any Policy certificate policy oid, as defined in
848 rfc 5280 section 4.2.1.4.
849 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
850 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +0000851 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
852 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +0000853 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +0000854 Contributed by Jack Lloyd and Fortanix Inc.
855 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000856 and the used tls-prf.
857 * Add public API for tls-prf function, according to requested enum.
858 * Add support for parsing otherName entries in the Subject Alternative Name
859 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +0000860 as defined in RFC 4108 section 5.
861 * Add support for parsing certificate policies extension, as defined in
862 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
863 supported.
864 * List all SAN types in the subject_alt_names field of the certificate.
865 Resolves #459.
866 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +0000867 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
868 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +0000869 lifetime of the underlying transport by adding a connection identifier
870 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500871 incoming record with the correct connection data even after the peer has
872 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +0000873 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
874 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
875
Paul Bakker5121ce52009-01-03 21:22:43 +0000876
Jaeden Amero4e0db562019-08-27 11:18:28 +0100877API Changes
878 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
879 and the used tls-prf.
880 * Add public API for tls-prf function, according to requested enum.
881
Paul Bakker5121ce52009-01-03 21:22:43 +0000882Bugfix
883 * Fix private key DER output in the key_app_writer example. File contents
884 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
885 Christian Walther in #2239.
886 * Fix potential memory leak in X.509 self test. Found and fixed by
887 Junhwan Park, #2106.
888 * Reduce stack usage of hkdf tests. Fixes #2195.
889 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
890 used with negative inputs. Found by Guido Vranken in #2404. Credit to
891 OSS-Fuzz.
892 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
893 either used both encrypt and decrypt key schedules, or which perform padding.
894 GCM and CCM were not affected. Fixed by Jack Lloyd.
895 * Fix incorrect default port number in ssl_mail_client example's usage.
896 Found and fixed by irwir. #2337
897 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
898 Fixed by Peter Kolbus (Garmin). #2579
899 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +0000900 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
901 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500902 for the parameter.
903 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +0000904 sni entry parameter. Reported by inestlerode in #560.
905 * Set the next sequence of the subject_alt_name to NULL when deleting
906 sequence on failure. Found and fix suggested by Philippe Antoine.
907 Credit to OSS-Fuzz.
908
Paul Bakker5121ce52009-01-03 21:22:43 +0000909Changes
910 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
911 mbedTLS configuration only SHA-2 signed certificates are accepted.
912 This certificate is used in the demo server programs, which lead the
913 client programs to fail at the peer's certificate verification
914 due to an unacceptable hash signature. The certificate has been
915 updated to one that is SHA-256 signed. Fix contributed by
916 Illya Gerasymchuk.
917 * Return from various debugging routines immediately if the
918 provided SSL context is unset.
919 * Remove dead code from bignum.c in the default configuration.
920 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
921 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
922 Contributed by Peter Kolbus (Garmin).
923 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
924 improve clarity. Fixes #2258.
925
926= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +0000927
928Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500929 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
930 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000931 at the cost of additional lifetime constraints on the input
932 buffer, but at the benefit of reduced RAM consumption.
933 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
934 named bitstring in DER as required by RFC 5280 Appendix B.
935 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
936 from the default list (enabled by default). See
937 https://sweet32.info/SWEET32_CCS16.pdf.
938
939API Changes
940 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500941 See the Features section for more information.
942 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
943 for the benefit of saving RAM, by disabling the new compile-time
944 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
945 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
946 always return NULL, and removes the peer_cert field from the
947 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +0100948 certificate.
949
950Security
951 * Make mbedtls_ecdh_get_params return an error if the second key
952 belongs to a different group from the first. Before, if an application
953 passed keys that belonged to different group, the first key's data was
954 interpreted according to the second group, which could lead to either
955 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500956 latter case, this could expose at most 5 bits of the private key.
957
958Bugfix
959 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
960 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
961 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
962 Raised as a comment in #1996.
963 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
964 previously lead to a stack overflow on constrained targets.
965 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
966 in the header files, which missed the precompilation check. #971
967 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
968 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +0000969 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
970 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +0200971 * Fix signed-to-unsigned integer conversion warning
972 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -0600973 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
974 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +0100975 * Fix false failure in all.sh when backup files exist in include/mbedtls
976 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
977 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
978 mbedtls_asn1_write_bitstring().
979 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
980 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +0000981 correctly as trailing zeroes were not accounted for as unused bits in the
982 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +0000983
984Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500985 * Reduce RAM consumption during session renegotiation by not storing
986 the peer CRT chain and session ticket twice.
987 * Include configuration file in all header files that use configuration,
988 instead of relying on other header files that they include.
989 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -0500990 * Add support for alternative CSR headers, as used by Microsoft and defined
991 in RFC 7468. Found by Michael Ernst. Fixes #767.
992 * Correct many misspellings. Fixed by MisterDA #2371.
993 * Provide an abstraction of vsnprintf to allow alternative implementations
994 for platforms that don't provide it. Based on contributions by Joris Aerts
995 and Nathaniel Wesley Filardo.
996 * Fix clobber list in MIPS assembly for large integer multiplication.
997 Previously, this could lead to functionally incorrect assembly being
998 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +0100999 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
1000 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01001001 * Reduce the complexity of the timing tests. They were assuming more than the
1002 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01001003 * Fix configuration queries in ssl-opt.h. #2030
1004 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00001005 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
1006 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001007 * Ciphersuites based on 3DES now have the lowest priority by default when
1008 they are enabled.
1009
1010= mbed TLS 2.16.0 branch released 2018-12-21
1011
1012Features
1013 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
1014 of parameters in the API. This allows detection of obvious misuses of the
1015 API, such as passing NULL pointers. The API of existing functions hasn't
1016 changed, but requirements on parameters have been made more explicit in
1017 the documentation. See the corresponding API documentation for each
1018 function to see for which parameter values it is defined. This feature is
1019 disabled by default. See its API documentation in config.h for additional
1020 steps you have to take when enabling it.
1021
1022API Changes
1023 * The following functions in the random generator modules have been
1024 deprecated and replaced as shown below. The new functions change
1025 the return type from void to int to allow returning error codes when
1026 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
1027 primitive. Fixes #1798.
1028 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
1029 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
1030 * Extend ECDH interface to enable alternative implementations.
1031 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
1032 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
1033 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
1034 * Additional parameter validation checks have been added for the following
1035 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
1036 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
1037 Where modules have had parameter validation added, existing parameter
1038 checks may have changed. Some modules, such as Chacha20 had existing
1039 parameter validation whereas other modules had little. This has now been
1040 changed so that the same level of validation is present in all modules, and
1041 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
1042 is off. That means that checks which were previously present by default
1043 will no longer be.
1044
1045New deprecations
1046 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
1047 in favor of functions that can return an error code.
1048
1049Bugfix
1050 * Fix for Clang, which was reporting a warning for the bignum.c inline
1051 assembly for AMD64 targets creating string literals greater than those
1052 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
1053 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
1054 through qemu user emulation. Reported and fix suggested by randombit
1055 in #1212. Fixes #1212.
1056 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
1057 This could lead to a buffer overflow, but only in case ticket authentication
1058 was broken. Reported and fix suggested by Guido Vranken in #659.
1059 * Add explicit integer to enumeration type casts to example program
1060 programs/pkey/gen_key which previously led to compilation failure
1061 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
1062 * Fix double initialization of ECC hardware that made some accelerators
1063 hang.
1064 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001065 of check for certificate/key matching. Reported by Attila Molnar, #507.
1066
1067 = mbed TLS 2.15.1 branch released 2018-11-30
1068
1069 Changes
1070 * Update the Mbed Crypto submodule to version 0.1.0b2.
1071
1072 = mbed TLS 2.15.0 branch released 2018-11-23
1073
1074 Features
1075 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
1076 Mbed Crypto as the source of the cryptography implementation.
1077 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
1078 the PSA Crypto API from Mbed Crypto when additionally used with the
1079 USE_CRYPTO_SUBMODULE build option.
1080
1081 Changes
1082 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001083 from the cipher abstraction layer. Fixes #2198.
1084
1085= mbed TLS 2.14.1 branch released 2018-11-30
1086
1087Security
1088 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
1089 decryption that could lead to a Bleichenbacher-style padding oracle
1090 attack. In TLS, this affects servers that accept ciphersuites based on
1091 RSA decryption (i.e. ciphersuites whose name contains RSA but not
1092 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
1093 (University of Adelaide), Daniel Genkin (University of Michigan),
1094 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
1095 (University of Adelaide, Data61). The attack is described in more detail
1096 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
1097 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
1098 via branching and memory access patterns. An attacker who could submit
1099 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
1100 of the decryption and not its result could nonetheless decrypt RSA
1101 plaintexts and forge RSA signatures. Other asymmetric algorithms may
1102 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
1103 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
1104 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
1105 modules.
1106
1107API Changes
1108 * The new functions mbedtls_ctr_drbg_update_ret() and
1109 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
1110 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001111 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001112 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001113
Hanno Beckerd3445da2018-11-02 09:36:45 +00001114= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001115
Simon Butcherb35e59d2018-11-19 15:49:26 +00001116Security
Simon Butcher681edee2018-11-07 16:25:38 +00001117 * Fix overly strict DN comparison when looking for CRLs belonging to a
1118 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1119 name and the CA's subject name differed in their string encoding (e.g.,
1120 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001121 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001122 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001123 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001124 incoming message buffer was placed within the first 64KiB of address
1125 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001126 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1127 potentially leading to an application crash or information disclosure.
1128 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1129 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001130 adversary to construct non-primes that would be erroneously accepted as
1131 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001132 security of TLS, but can matter in other contexts with numbers chosen
1133 potentially by an adversary that should be prime and can be validated.
1134 For example, the number of rounds was enough to securely generate RSA key
1135 pairs or Diffie-Hellman parameters, but was insufficient to validate
1136 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001137 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001138 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001139
Simon Butcherb35e59d2018-11-19 15:49:26 +00001140Features
1141 * Add support for temporarily suspending expensive ECC computations after
1142 some configurable amount of operations. This is intended to be used in
1143 constrained, single-threaded systems where ECC is time consuming and can
1144 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001145 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1146 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1147 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1148 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001149 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1150 including client authentication).
1151 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1152 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001153 MPI multiplications used in ECC and RSA cryptography. Contributed by
1154 Aurelien Jarno.
1155 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1156 signature always used a salt with the same length as the hash, and returned
1157 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001158 shorter. This allows the library to support all hash and signature sizes
1159 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001160 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001161 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001162
1163API Changes
1164 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1165 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001166 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001167 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001168
1169New deprecations
1170 * All module specific errors following the form
1171 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001172 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001173 platform error.
1174 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001175 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1176 by the equivalent plaform error.
1177 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001178 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001179 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001180
1181Bugfix
1182 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1183 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001184 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1185 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001186 * Fix a bug in the update function for SSL ticket keys which previously
1187 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001188 * Fix failure in hmac_drbg in the benchmark sample application, when
1189 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1190 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001191 which lead to accepting properly authenticated but improperly
1192 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001193 * Fix memory leak and freeing without initialization in the example
1194 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001195 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1196 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1197 * Zeroize memory used for buffering or reassembling handshake messages
1198 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001199 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1200 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1201 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001202 UTF8String. Previously, the use of the PrintableString format led to
1203 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001204 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1205 Thomas-Dee.
1206 * Fix compilation failure for configurations which use compile time
1207 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001208 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1209 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001210
Simon Butcherc86993e2018-09-27 09:48:54 +01001211Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001212 * Removed support for Yotta as a build tool.
1213 * Add tests for session resumption in DTLS.
1214 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001215 test the handling of large packets and small packets on the client side
1216 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001217 * Change the dtls_client and dtls_server samples to work by default over
1218 IPv6 and optionally by a build option over IPv4.
1219 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001220 calls, rather than Win32 API calls directly. This is necessary to avoid
1221 conflict with C runtime usage. Found and fixed by irwir.
1222 * Remember the string format of X.509 DN attributes when replicating
1223 X.509 DNs. Previously, DN attributes were always written in their default
1224 string format (mostly PrintableString), which could lead to CRTs being
1225 created which used PrintableStrings in the issuer field even though the
1226 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1227 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001228 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1229 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001230 * Improve documentation of mbedtls_ssl_get_verify_result().
1231 Fixes #517 reported by github-monoculture.
1232 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001233 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001234 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001235
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001236= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001237
Hanno Becker921b76d2018-09-05 16:21:36 +01001238API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001239 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001240 whose implementation should behave as a thread-safe version of gmtime().
1241 This allows users to configure such an implementation at compile time when
1242 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001243 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001244 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001245
1246Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001247 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001248 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001249
k-stachowiak21feae52018-07-09 14:42:35 +02001250= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001251
1252Security
1253 * Fix an issue in the X.509 module which could lead to a buffer overread
1254 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001255 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001256 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001257
1258Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001259 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001260 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001261 with the peer, as well as by a new per-connection MTU option, set using
1262 mbedtls_ssl_set_mtu().
1263 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001264 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1265 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001266 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001267 enabled by default.
1268 * Add support for buffering out-of-order handshake messages in DTLS.
1269 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001270 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1271 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001272
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001273API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001274 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001275 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001276
1277Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001278 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1279 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001280 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1281 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001282 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001283 Fix contributed by Espressif Systems.
1284 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001285 This improves compliance to RFC 4492, and as a result, solves
1286 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001287 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001288 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001289 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1290 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1291 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1292 with TLS versions 1.1 and earlier when the server requested authentication
1293 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001294 check in parsing the CertificateRequest message,
1295 introduced in Mbed TLS 2.12.0. Fixes #1954.
1296 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001297 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1298 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001299 * Fix undefined shifts with negative values in certificates parsing
1300 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001301 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001302 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001303 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1304
1305Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001306 * Copy headers preserving timestamps when doing a "make install".
1307 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001308 * Allow the forward declaration of public structs. Contributed by Dawid
1309 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001310 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001311 CCM test vectors from RAM.
1312 * Add support for buffering of out-of-order handshake messages.
1313 * Add warnings to the documentation of the HKDF module to reduce the risk
1314 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001315 functions. Fixes #1775. Reported by Brian J. Murray.
1316
Gilles Peskine104d8582018-06-27 10:57:33 +02001317= mbed TLS 2.12.0 branch released 2018-07-25
1318
1319Security
1320 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1321 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1322 partially recover the plaintext of messages under some conditions by
1323 exploiting timing measurements. With DTLS, the attacker could perform
1324 this recovery by sending many messages in the same connection. With TLS
1325 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1326 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1327 sent over connections manipulated by the attacker. Connections using GCM
1328 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1329 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1330 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001331 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1332 Shamir.
1333 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001334 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001335 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001336 plaintext of messages under some conditions by using a cache attack
1337 targeting an internal MD/SHA buffer. With TLS or if
1338 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1339 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1340 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001341 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1342 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1343 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1344 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1345 execute code on the local machine as well as manipulate network packets,
1346 to partially recover the plaintext of messages under some conditions (see
1347 previous entry) by using a cache attack targeting the SSL input record
1348 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001349 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001350 Eyal Ronen and Adi Shamir.
1351
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001352Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001353 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001354 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001355 by Daniel King.
1356 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01001357 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
1358 Contributed by Augustin Cavalier.
1359 * Make the receive and transmit buffers independent sizes, for situations
1360 where the outgoing buffer can be fixed at a smaller size than the incoming
1361 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03001362 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001363 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001364 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01001365 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
1366
1367Bugfix
niisatob7d39db2018-06-25 20:44:57 +09001368 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09001369 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01001370 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001371 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01001372 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
1373 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01001374 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
1375 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01001376 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
1377 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03001378 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
1379 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001380 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
1381 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01001382 * Added length checks to some TLS parsing functions. Found and fixed by
1383 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03001384 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03001385 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01001386 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
1387 the `#include` in the header files. Resolves #857
1388 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01001389 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
1390 Drozd. #1098
1391 * Fix decryption for zero length messages (which contain all padding) when a
1392 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
1393 such a message was wrongly reported as an invalid record and therefore lead
1394 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01001395 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
1396 contributed by Espressif Systems. Fixes #1632
1397 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001398 when the request_size argument is set to 0 as stated in the documentation.
1399 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01001400 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01001401 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001402 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001403
1404Changes
1405 * Fail when receiving a TLS alert message with an invalid length, or invalid
1406 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
1407 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001408 when calling with a NULL salt and non-zero salt_len. Contributed by
1409 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00001410 * Change the shebang line in Perl scripts to look up perl in the PATH.
1411 Contributed by fbrosson.
1412 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001413 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001414 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
1415
1416= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01001417
1418Features
1419 * Add additional block mode, OFB (Output Feedback), to the AES module and
1420 cipher abstraction module.
1421 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01001422 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
1423 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02001424 * Add support for the XTS block cipher mode with AES (AES-XTS).
1425 Contributed by Aorimn in pull request #414.
1426 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01001427 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01001428 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01001429
1430Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01001431 * Fix the cert_write example to handle certificates signed with elliptic
1432 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01001433 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
1434 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01001435 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01001436 Reported by rahmanih in #683
1437 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
1438
Simon Butcherb6a5bff2018-06-18 11:51:36 +01001439Changes
1440 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
1441 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001442 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01001443 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001444
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01001445= mbed TLS 2.10.0 branch released 2018-06-06
1446
1447Features
1448 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02001449 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00001450
1451API Changes
1452 * Extend the platform module with a util component that contains
1453 functionality shared by multiple Mbed TLS modules. At this stage
1454 platform_util.h (and its associated platform_util.c) only contain
1455 mbedtls_platform_zeroize(), which is a critical function from a security
1456 point of view. mbedtls_platform_zeroize() needs to be regularly tested
1457 against compilers to ensure that calls to it are not removed from the
1458 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01001459 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01001460 facilitate testing and maintenance.
1461
1462Bugfix
1463 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001464 build to fail. Found by zv-io. Fixes #1651.
1465
Moran Pekera64fba42018-02-25 13:29:03 +02001466Changes
1467 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001468 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01001469 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02001470
Simon Butcherf85c90a2017-07-27 15:11:52 +01001471= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01001472
1473Security
1474 * Fix an issue in the X.509 module which could lead to a buffer overread
1475 during certificate validation. Additionally, the issue could also lead to
1476 unnecessary callback checks being made or to some validation checks to be
1477 omitted. The overread could be triggered remotely, while the other issues
1478 would require a non DER-compliant certificate to be correctly signed by a
1479 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
1480 luocm. Fixes #825.
1481 * Fix the buffer length assertion in the ssl_parse_certificate_request()
1482 function which led to an arbitrary overread of the message buffer. The
1483 overreads could be caused by receiving a malformed message at the point
1484 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04001485 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01001486 data is output with the debug data.
1487 * Fix a client-side bug in the validation of the server's ciphersuite choice
1488 which could potentially lead to the client accepting a ciphersuite it didn't
1489 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001490 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01001491 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01001492
1493Features
1494 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01001495 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
1496 Suggested and contributed by jkivilin in pull request #394.
1497 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001498 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01001499 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
1500 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01001501
1502API Changes
1503 * Extend the public API with the function of mbedtls_net_poll() to allow user
1504 applications to wait for a network context to become ready before reading
1505 or writing.
1506 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02001507 a check for whether more more data is pending to be processed in the
1508 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01001509 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00001510 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01001511
Gilles Peskine08185402018-03-22 21:50:48 +01001512Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01001513 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
1514 contributed by Brian J Murray and David Brown.
1515 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01001516 in configurations that omit certain hashes or public-key algorithms.
1517 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02001518 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01001519 #1353
1520 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
1521 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
1522 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08001523 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01001524 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07001525 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01001526 unable to parse keys which had only the optional parameters field of the
1527 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
1528 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02001529 stated in the mbedtls_cipher_update() documentation. Contributed by
1530 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01001531 * Fix overriding and ignoring return values when parsing and writing to
1532 a file in pk_sign program. Found by kevlut in #1142.
1533 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
1534 where data needs to be fetched from the underlying transport in order
1535 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01001536 returned when unexpected messages were being discarded, ignoring that
1537 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02001538 in the internal buffers; these cases led to deadlocks when event-driven
1539 I/O was used. Found and reported by Hubert Mis in #772.
1540 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04001541 function which leads to a potential one byte overread of the message
1542 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001543 * Fix invalid buffer sizes passed to zlib during record compression and
1544 decompression.
1545 * Fix the soversion of libmbedcrypto to match the soversion of the
1546 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01001547 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001548 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
1549
Simon Butcherb03120a2018-04-30 16:40:25 +01001550Changes
1551 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01001552 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
1553 independently by Matthieu Volat and Arne Schwabe.
1554 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00001555 public-key algorithms. Includes contributions by Gert van Dijk.
1556 * Improve negative testing of X.509 parsing.
1557 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01001558 configurations where the feature is disabled. Found and fixed by Gergely
1559 Budai.
1560 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
1561 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01001562 instead incorrectly manipulates the configuration structure directly.
1563 Found and fix submitted by junyeonLEE in #1220.
1564 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02001565 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
1566 without PBES2. Fixed by Marcos Del Sol Vives.
1567 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01001568 for Curve25519 (other curves had it already). Contributed by Nicholas
1569 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01001570 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
1571 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01001572 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001573 Paul Sokolovsky in #1356.
1574 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01001575 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001576 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01001577 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02001578 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02001579 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
1580 by Alexey Skalozub in #405.
1581 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02001582 transmitting more than the required length, return an error. Raised by
1583 Sam O'Connor in #1245.
1584 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01001585 HMAC functions with non-HMAC ciphersuites. Independently contributed
1586 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02001587 * Improve security of RSA key generation by including criteria from
1588 FIPS 186-4. Contributed by Jethro Beekman. #1380
1589 * Declare functions in header files even when an alternative implementation
1590 of the corresponding module is activated by defining the corresponding
1591 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04001592 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001593 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00001594 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01001595
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001596= mbed TLS 2.8.0 branch released 2018-03-16
1597
1598Default behavior changes
1599 * The truncated HMAC extension now conforms to RFC 6066. This means
1600 that when both sides of a TLS connection negotiate the truncated
1601 HMAC extension, Mbed TLS can now interoperate with other
1602 compliant implementations, but this breaks interoperability with
1603 prior versions of Mbed TLS. To restore the old behavior, enable
1604 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
1605 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00001606 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001607
1608Security
1609 * Fix implementation of the truncated HMAC extension. The previous
1610 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01001611 HMAC key of a single, uninterrupted connection (with no
1612 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001613 * Verify results of RSA private key operations to defend
1614 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001615 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
1616 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01001617 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
1618 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00001619 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001620 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
1621
1622Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01001623 * Extend PKCS#8 interface by introducing support for the entire SHA
1624 algorithms family when encrypting private keys using PKCS#5 v2.0.
1625 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01001626 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001627 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00001628 * Add support for public keys encoded in PKCS#1 format. #1122
1629
1630New deprecations
1631 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01001632 MBEDTLS_ZLIB_SUPPORT).
1633
1634Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01001635 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02001636 Fixes #1358.
1637 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01001638 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
1639 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00001640 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01001641 daniel in the Mbed TLS forum. #1351
1642 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
1643 * Fix setting version TLSv1 as minimal version, even if TLS 1
1644 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03001645 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
1646 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03001647 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01001648 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02001649 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01001650 * In test_suite_pk, pass valid parameters when testing for hash length
1651 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01001652 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01001653 by Guido Vranken. #639
1654 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001655 * Fix X509 CRT parsing that would potentially accept an invalid tag when
1656 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001657 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
1658 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01001659 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
1660 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01001661 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
1662 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01001663 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
1664 Found through fuzz testing.
1665
1666Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01001667 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01001668 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01001669 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
1670 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02001671 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01001672 a migration path for those depending on the library's ABI.
1673 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01001674 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001675 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001676
Gilles Peskine28a0c722017-10-17 19:01:38 +02001677= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00001678
1679Security
1680 * Fix a heap corruption issue in the implementation of the truncated HMAC
1681 extension. When the truncated HMAC extension is enabled and CBC is used,
1682 sending a malicious application packet could be used to selectively corrupt
1683 6 bytes on the peer's heap, which could potentially lead to crash or remote
1684 code execution. The issue could be triggered remotely from either side in
1685 both TLS and DTLS. CVE-2018-0488
1686 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
1687 for the key size, which could potentially lead to crash or remote code
1688 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
1689 Qualcomm Technologies Inc. CVE-2018-0487
1690 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
1691 zeros.
1692 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01001693 64 KiB to the address of the SSL buffer and causing a wrap around.
1694 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
1695 default enabled) maximum fragment length extension is disabled in the
1696 config and the application data buffer passed to mbedtls_ssl_write
1697 is larger than the internal message buffer (16384 bytes by default), the
1698 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00001699 application layer can be forced into sending such large packets. The issue
1700 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
1701 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
1702 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01001703 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01001704 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03001705 * Ensure that buffers are cleared after use if they contain sensitive data.
1706 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01001707 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
1708 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001709 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
1710 leaking 1 bit of the private key. Reported by prashantkspatil.
1711 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
1712 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01001713 sake of saving memory, but potentially leading to slight timing
1714 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001715 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01001716 after keypair generation.
1717 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01001718 (server-side). Could result in application crash, but only if an ALPN
1719 name larger than 16 bytes had been configured on the server.
1720 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02001721 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001722 manner.
1723
Gilles Peskinec82fbb42017-12-15 15:01:27 +01001724Features
1725 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02001726 * The selftest program can execute a subset of the tests based on command
1727 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01001728 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00001729 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01001730 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01001731 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03001732 * Add support for alternative implementations of GCM, selected by the
1733 configuration flag MBEDTLS_GCM_ALT.
1734 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03001735 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03001736 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03001737 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001738 with alternative implementation:
1739 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03001740 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03001741 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
1742 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
1743 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001744 with an alternative implementation:
1745 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00001746 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02001747 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00001748 * Add mechanism to provide alternative implementation of the DHM module.
1749
1750API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00001751 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00001752 independent setup and export of RSA contexts. Most notably,
1753 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
1754 up RSA contexts from partial key material and having them completed to the
1755 needs of the implementation automatically. This allows to setup private RSA
1756 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
1757 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01001758 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
1759 implementations of the RSA interface declared in rsa.h.
1760 * The following functions in the message digest modules (MD2, MD4, MD5,
1761 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
1762 The new functions change the return type from void to int to allow
1763 returning error codes when using MBEDTLS_<MODULE>_ALT.
1764 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01001765 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001766 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03001767 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
1768
Simon Butcher55fc4e02018-02-05 01:09:13 +00001769New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01001770 * Deprecate usage of RSA primitives with non-matching key-type
1771 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00001772 * Direct manipulation of structure fields of RSA contexts is deprecated.
1773 Users are advised to use the extended RSA API instead.
1774 * Deprecate usage of message digest functions that return void
1775 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
1776 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01001777 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
1778 that can return an error code.
1779 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
1780 parameters from RFC 3526 or the newly added parameters from RFC 7919.
1781 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001782 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
1783 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01001784 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001785 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001786 accepting DHM parameters in binary form, matching the new constants.
1787
1788Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01001789 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01001790 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01001791 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03001792 Found by projectgus and Jethro Beekman, #836.
1793 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
1794 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00001795 renegotiated handshakes would only accept signatures using SHA-1
1796 regardless of the peer's preferences, or fail if SHA-1 was disabled.
1797 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02001798 dates on leap years with 100 and 400 intervals are handled correctly. Found
1799 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01001800 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
1801 accepted. Generating these signatures required the private key.
1802 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01001803 Found independently by Florian in the mbed TLS forum and by Mishamax.
1804 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00001805 * Fix variable used before assignment compilation warnings with IAR
1806 toolchain. Found by gkerrien38.
1807 * Fix unchecked return codes from AES, DES and 3DES functions in
1808 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
1809 If a call to one of the functions of the cryptographic primitive modules
1810 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01001811 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
1812 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01001813 * Include configuration file in md.h, to fix compilation warnings.
1814 Reported by aaronmdjones in #1001
1815 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01001816 writing routines that prevented these functions to work with alternative
1817 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01001818 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00001819 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01001820 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00001821 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01001822 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001823 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00001824 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01001825 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01001826 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01001827 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
1828 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03001829 * Add size-checks for record and handshake message content, securing
1830 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01001831 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001832 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01001833 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
1834 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00001835 * Fix possible memory leaks in mbedtls_gcm_self_test().
1836 * Added missing return code checks in mbedtls_aes_self_test().
1837 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
1838 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01001839 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01001840 beforehand.
1841 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001842 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
1843 Found and fixed by Martijn de Milliano.
1844 * Fix an issue in the cipher decryption with the mode
1845 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01001846 Note, this padding mode is not used by the TLS protocol. Found and fixed by
1847 Micha Kraus.
1848 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
1849 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01001850 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
1851 mbedtls_sha512_init() is called before operating on the relevant context
1852 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00001853 reset it. Found independently by ccli8 on Github.
1854 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01001855 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
1856 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001857
Hanno Becker86e52302017-10-05 09:08:53 +01001858Changes
1859 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00001860 and the message digest. Further, allow enabling/disabling of authority
1861 identifier, subject identifier and basic constraints extensions.
1862 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
1863 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01001864 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01001865 on GitHub.
1866 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01001867 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
1868 undeclared dependency of the RSA module on the ASN.1 module.
1869 * Update all internal usage of deprecated message digest functions to the
1870 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00001871 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01001872 everywhere except some locations in the ssl_tls.c module.
1873 * Improve CTR_DRBG error handling by propagating underlying AES errors.
1874 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01001875 modules where the software implementation can be replaced by a hardware
1876 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001877 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01001878 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02001879
Simon Butcherb060cc22017-07-28 01:04:34 +01001880= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01001881
Simon Butcherf85c90a2017-07-27 15:11:52 +01001882Security
1883 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01001884 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
1885 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01001886 (default: 8) intermediates, even when it was not trusted. This could be
1887 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01001888 (the default), the handshake was correctly aborted).
1889 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01001890 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001891 Found by Laurent Simon.
1892
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01001893Features
1894 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01001895 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01001896 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01001897 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
1898 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001899 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02001900 cryptographic acceleration hardware.
1901
1902API Changes
1903 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01001904 API consistent with mbed TLS 2.5.0. Specifically removed the inline
1905 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01001906 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
1907 by James Cowgill. #978
1908 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01001909 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01001910 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01001911 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02001912 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02001913 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01001914
1915Bugfix
1916 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
Ron Eldor63140682017-01-09 19:27:59 +02001917 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01001918 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01001919 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
1920 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02001921 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01001922 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01001923 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
1924 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01001925 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01001926 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01001927 * Fix a potential integer overflow in the version verification for DER
1928 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00001929 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001930 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00001931 * Fix potential integer overflow in the version verification for DER
1932 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01001933 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001934 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01001935 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01001936 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01001937 constructed certificates to bypass the certificate verification check.
1938 * Fix a call to the libc function time() to call the platform abstraction
1939 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02001940 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01001941 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01001942
Simon Butcher3f2557e2017-08-01 18:06:12 +01001943Changes
1944 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01001945 64-bit division. This is useful on embedded platforms where 64-bit division
1946 created a dependency on external libraries. #708
1947 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01001948 accelerator code in the library leaves concurrency handling to the
1949 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01001950 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
1951 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01001952 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01001953 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01001954 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01001955
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001956= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01001957
1958Security
1959 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
1960 The issue could only happen client-side with renegotiation enabled.
1961 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02001962 (if the application layer sent data read from mbedtls_ssl_read()
1963 back to the server or to a third party). Can be triggered remotely.
1964 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02001965 certificate verification. SHA-1 can be turned back on with a compile-time
1966 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02001967 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
1968 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001969 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01001970 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001971
1972Bugfix
1973 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01001974 valid C and they prevented the test from compiling in Visual Studio 2015
1975 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001976 * Fix insufficient support for signature-hash-algorithm extension,
1977 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02001978 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01001979 when sending the alert failed. The fix makes sure not to hide the error
1980 that triggered the alert.
1981 * Fix SSLv3 renegotiation behaviour and stop processing data received from
1982 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01001983 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01001984 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001985 * Accept empty trusted CA chain in authentication mode
1986 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
1987 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
1988 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
1989 reflect bad EC curves within verification result.
1990 * Fix bug that caused the modular inversion function to accept the invalid
1991 modulus 1 and therefore to hang. Found by blaufish. #641.
1992 * Fix incorrect sign computation in modular exponentiation when the base is
1993 a negative MPI. Previously the result was always negative. Found by Guido
1994 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02001995 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02001996 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001997
1998Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00001999 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01002000 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00002001 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02002002 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01002003 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002004
Janos Follath45182a02017-03-23 10:41:56 +00002005= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01002006
Janos Follath5a1c0e72017-06-16 09:00:07 +01002007Security
2008 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00002009 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
2010 Simon.
2011 * Add exponent blinding to RSA private operations as a countermeasure
2012 against side-channel attacks like the cache attack described in
2013 https://arxiv.org/abs/1702.08719v2.
2014 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01002015 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002016
2017Features
2018 * Add hardware acceleration support for the Elliptic Curve Point module.
2019 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01002020 replacing the core functions and adding and alternative, module level
2021 replacement support for enabling the extension of the interface.
2022 * Add a new configuration option to 'mbedtls_ssl_config' to enable
2023 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00002024 behaviour has not changed, namely every configured CAs name is included.
2025
2026API Changes
2027 * The following functions in the AES module have been deprecated and replaced
2028 by the functions shown below. The new functions change the return type from
2029 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
2030 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
2031 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002032 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
2033
2034Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01002035 * Remove macros from compat-1.3.h that correspond to deleted items from most
2036 recent versions of the library. Found by Kyle Keen.
2037 * Fixed issue in the Threading module that prevented mutexes from
2038 initialising. Found by sznaider. #667 #843
2039 * Add checks in the PK module for the RSA functions on 64-bit systems.
2040 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002041 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00002042 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002043
Janos Follath182013f2016-10-25 10:50:22 +01002044= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00002045
2046Security
2047 * Add checks to prevent signature forgeries for very large messages while
2048 using RSA through the PK module in 64-bit systems. The issue was caused by
2049 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00002050 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
2051 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
2052 * Fixed potential livelock during the parsing of a CRL in PEM format in
2053 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
2054 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01002055 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
2056 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00002057 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00002058 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
2059 Introduced by interoperability fix for #513.
2060 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00002061 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00002062 triggered remotely for example with a maliciously constructed certificate
2063 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00002064 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01002065 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00002066
2067Bugfix
2068 * Fix output certificate verification flags set by x509_crt_verify_top() when
2069 traversing a chain of trusted CA. The issue would cause both flags,
2070 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00002071 set when the verification conditions are not met regardless of the cause.
2072 Found by Harm Verhagen and inestlerode. #665 #561
2073 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00002074 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
2075 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00002076 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00002077 x509_csr.c that are reported when building mbed TLS with a config.h that
2078 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
2079 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
2080 would compare 64 bits of the record counter instead of 48 bits as indicated
2081 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01002082 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01002083 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01002084 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00002085 the input string in PEM format to extract the different components. Found
2086 by Eyal Itkin.
2087 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
2088 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2089 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
2090 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00002091 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
2092 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00002093 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
2094 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00002095 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
2096 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00002097 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
2098 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00002099 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
2100 fix proposed by Guido Vranken. #722
2101 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02002102 Studio 2015 as well as the files themselves, to remove a build warning
2103 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00002104 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
2105 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
2106 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00002107 number to write in hexadecimal is negative and requires an odd number of
2108 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002109 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00002110 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00002111
2112= mbed TLS 2.4.1 branch released 2016-12-13
2113
2114Changes
2115 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2116 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01002117 Authentication – October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03002118
Andres AG60dbc932016-09-02 15:23:48 +01002119= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01002120
2121Security
2122 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2123 with RFC-5116 and could lead to session key recovery in very long TLS
2124 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2125 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01002126 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01002127 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01002128 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01002129 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03002130 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01002131
2132Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03002133 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2134 NIST SP 800-38B, RFC-4493 and RFC-4615.
2135 * Added hardware entropy selftest to verify that the hardware entropy source
2136 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01002137 * Added a script to print build environment info for diagnostic use in test
2138 scripts, which is also now called by all.sh.
2139 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01002140 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01002141 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01002142 * Added a configuration file config-no-entropy.h that configures the subset of
2143 library features that do not require an entropy source.
2144 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03002145 to configure the minimum number of bytes for entropy sources using the
2146 mbedtls_hardware_poll() function.
2147
2148Bugfix
2149 * Fix for platform time abstraction to avoid dependency issues where a build
2150 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01002151 configuration consistency checks to check_config.h
2152 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03002153 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2154 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03002155 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2156 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01002157 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01002158 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01002159 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01002160 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01002161 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01002162 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01002163 * Fixed pthread implementation to avoid unintended double initialisations
2164 and double frees. Found by Niklas Amnebratt.
2165 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01002166 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2167 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01002168 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01002169 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002170 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002171 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01002172 mbedtls_gcm_finish(). Found by cmiatpaar. #602
2173 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01002174 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002175 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01002176 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
2177 Found by subramanyam-c. #626
2178 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01002179 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03002180 certificate. Found by teumas. #513
2181 * Fix compilation without MBEDTLS_SELF_TEST enabled.
2182
2183Changes
2184 * Extended test coverage of special cases, and added new timing test suite.
2185 * Removed self-tests from the basic-built-test.sh script, and added all
2186 missing self-tests to the test suites, to ensure self-tests are only
2187 executed once.
2188 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01002189 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01002190 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01002191 * Added optimization for code space for X.509/OID based on configured
2192 features. Contributed by Aviv Palivoda.
2193 * Renamed source file library/net.c to library/net_sockets.c to avoid
2194 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01002195 net.c. For consistency, the corresponding header file, net.h, is marked as
2196 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002197 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01002198 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002199
Janos Follathcc4eba72016-02-10 16:25:55 +00002200= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00002201
Janos Follath3218b212016-02-10 16:14:10 +00002202Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002203 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
2204 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002205 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01002206 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00002207 (not triggerable remotely in (D)TLS).
2208 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00002209 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002210 SSL/TLS.
2211
2212Features
2213 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002214 function.
2215
2216Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002217 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002218 arguments where the same (in-place doubling). Found and fixed by Janos
2219 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002220 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01002221 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00002222 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00002223 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
2224 ECDSA was disabled in config.h . The leak didn't occur by default.
2225 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01002226 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00002227 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002228 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00002229 buffer after DER certificates to be included in the raw representation.
2230 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01002231 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2232 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01002233 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002234 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01002235 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01002236 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002237 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002238 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
2239
2240Changes
2241 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002242 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01002243 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
2244 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01002245 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2246 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002247 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2248 ignored, as required by RFC6101.
2249
2250= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002251
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002252Security
Simon Butcher00923c12015-12-22 19:04:24 +00002253 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002254 allocate memory. Only used for certificate generation, not triggerable
2255 remotely in SSL/TLS. Found by Rafał Przywara. #367
2256 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002257 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00002258 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002259 https://www.mitls.org/pages/attacks/SLOTH
2260
2261Bugfix
2262 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2263 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00002264 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002265 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01002266 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002267 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002268 * Fix suboptimal handling of unexpected records that caused interop issues
2269 with some peers over unreliable links. Avoid dropping an entire DTLS
2270 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002271 drop the record and look at subsequent records (if any are present) in
2272 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00002273
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002274= mbed TLS 2.2.0 released 2015-11-04
2275
2276Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00002277 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002278 once and some allocation fails. Cannot be forced remotely. Found by Guido
2279 Vranken, Intelworks.
2280 * Fix potential heap corruption on Windows when
2281 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002282 triggered remotely. Found by Guido Vranken, Intelworks.
2283 * Fix potential buffer overflow in some asn1_write_xxx() functions.
2284 Cannot be triggered remotely unless you create X.509 certificates based
2285 on untrusted input or write keys of untrusted origin. Found by Guido
2286 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002287 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002288 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002289 Janos Follath. #280 and #319
2290
2291Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002292 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2293 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002294 * Added a key extraction callback to accees the master secret and key
2295 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00002296
2297Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002298 * Self-signed certificates were not excluded from pathlen counting,
2299 resulting in some valid X.509 being incorrectly rejected. Found and fix
2300 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002301 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002302 exchange. Found and fix provided by Chris Hammond. #270
2303 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002304 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002305 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
2306 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
2307 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002308 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002309 minimum key size for end-entity certificates with RSA keys. Found by
2310 Matthew Page of Scannex Electronics Ltd.
2311 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002312 Found by Kurt Danielson. #292
2313 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
2314 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01002315 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002316 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002317
2318Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002319 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2320 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002321
2322= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002323
2324Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01002325 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002326 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002327 Intelworks.
2328 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
2329 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2330 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01002331 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002332 * Fix stack buffer overflow in pkcs12 decryption (used by
2333 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
2334 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2335 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2336 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2337 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002338 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01002339 require reading a string of close to or larger than 2^62 bytes.
2340 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002341 on crafted PEM input data. Found and fix provided by Guido Vranken,
2342 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
2343 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01002344 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01002345 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002346 Intelworks. Not trigerrable remotely in TLS.
2347 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
2348 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01002349 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002350 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01002351 authentication against a crafted CA cert. Cannot be triggered remotely
2352 unless you allow third parties to pick trust CAs for client auth.
2353 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01002354
2355Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01002356 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01002357 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002358 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002359
2360Changes
2361 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
2362 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002363 * Fixed paths for check_config.h in example config files. (Found by bachp)
2364 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002365
2366= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002367
Simon Butchera1a11282015-09-14 21:30:40 +01002368Security
2369 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02002370 signatures. (Found by Florian Weimer, Red Hat.)
2371 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
2372 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01002373 tries to continue the handshake after it failed (a misuse of the API).
2374 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
2375 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02002376
2377Bugfix
2378 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
2379 * Fix off-by-one error in parsing Supported Point Format extension that
2380 caused some handshakes to fail.
2381
2382Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01002383 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002384 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002385 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002386 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02002387 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
2388 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002389 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002390 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
2391 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02002392
2393= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02002394
2395Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002396 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02002397 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002398
2399Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02002400 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02002401 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
2402 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02002403 * Fix bug when parsing a ServerHello without extensions (found by David
2404 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02002405 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
2406 (found by Benoit Lecocq).
2407 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02002408 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02002409 * Fix compile error with armcc 5 with --gnu option.
2410 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02002411 (found by robotanarchy) (#232).
2412 * Fix bug in Makefile that prevented from installing without building the
2413 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01002414 * Fix missing -static-libgcc when building shared libraries for Windows
2415 with make.
2416 * Fix link error when building shared libraries for Windows with make.
2417 * Fix error when loading libmbedtls.so.
2418 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
2419 be always used (found by dcb314) (#235)
2420 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002421 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02002422 Fredrik Axelsson) (#257)
2423 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002424 * Fix memory corruption on client with overlong PSK identity, around
2425 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
2426 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02002427 * Fix unused function warning when using MBEDTLS_MDx_ALT or
2428 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
2429 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01002430
2431Changes
2432 * The PEM parser now accepts a trailing space at end of lines (#226).
2433 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002434 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01002435 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01002436 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002437 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002438 (#220).
2439 * Prepend a "thread identifier" to debug messages (issue pointed out by
2440 Hugo Leisink) (#210).
2441 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
2442 length.
2443
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002444= mbed TLS 2.0.0 released 2015-07-13
2445
2446Features
2447 * Support for DTLS 1.0 and 1.2 (RFC 6347).
2448 * Ability to override core functions from MDx, SHAx, AES and DES modules
2449 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02002450 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002451 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02002452 preserve forward secrecy, and allows sharing across multiple contexts.
2453 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002454 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002455 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002456 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002457 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02002458 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02002459
2460API Changes
2461 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002462 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002463 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002464 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02002465 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002466 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002467 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002468 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02002469 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002470 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02002471 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002472 * The following _init() functions that could return errors have
2473 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002474 should generally be the first function called on this context after init:
2475 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002476 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002477 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02002478 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002479 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
2480 Note that for mbedtls_ssl_setup(), you need to be done setting up the
2481 ssl_config structure before calling it.
2482 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002483 ssl_set_session() and ssl_set_client_transport_id(), plus
2484 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002485 (see rename.pl and compat-1.3.h above) and their first argument's type
2486 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002487 * ssl_set_bio() changed signature (contexts merged, order switched, one
2488 additional callback for read-with-timeout).
2489 * The following functions have been introduced and must be used in callback
2490 implementations (SNI, PSK) instead of their *conf counterparts:
2491 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002492 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01002493 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002494 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01002495 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002496 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
2497 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02002498 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
2499 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002500 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002501 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002502 * mbedtls_ssl_conf_truncated_hmac() now returns void.
2503 * mbedtls_memory_buffer_alloc_init() now returns void.
2504 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002505 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002506 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01002507 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
2508 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
2509 * The following functions changed prototype to avoid an in-out length
2510 parameter:
2511 mbedtls_base64_encode()
2512 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02002513 mbedtls_mpi_write_string()
2514 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02002515 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02002516 changed type to "mbedtls_net_context *".
2517 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002518 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02002519 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02002520 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02002521 ecdsa_write_signature_det() was deprecated.
2522 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01002523 * Last argument of x509_crt_check_key_usage() and
2524 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
2525 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01002526 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02002527 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
2528 strings; use the new *_len variables instead of strlen().
2529 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00002530 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02002531 length parameter to include the terminating null byte for PEM input.
2532 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02002533 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002534 layer and the memory_buffer_alloc module changed accordingly.
2535 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02002536 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
2537 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002538 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
2539 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02002540 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002541 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
2542 Their 'port' argument type is changed to a string.
2543 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002544
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02002545Removals
2546 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02002547 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
2548 mbedtls_ecp_muladd().
2549 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02002550 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02002551 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002552 waiting function.
2553 * Removed test DHM parameters from the test certs module.
2554 * Removed the PBKDF2 module (use PKCS5).
2555 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
2556 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
2557 * Removed openssl.h (very partial OpenSSL compatibility layer).
2558 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
2559 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
2560 been removed (compiler is required to support 32-bit operations).
2561 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
2562 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002563 * Removed test program ssl_test, superseded by ssl-opt.sh.
2564 * Removed helper script active-config.pl
2565
2566New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002567 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002568 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002569
2570Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02002571 * Renamed a few headers to include _internal in the name. Those headers are
2572 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002573 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
2574 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01002575 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002576 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
2577 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002578 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002579 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02002580
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002581Default behavior changes
2582 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002583 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
2584 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01002585 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02002586 compile time.
2587 * The default authmode for SSL/TLS clients is now REQUIRED.
2588 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01002589 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002590 custom config.h
2591 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01002592 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02002593 chain verification.
2594 * Negotiation of truncated HMAC is now disabled by default on server too.
2595 * The following functions are now case-sensitive:
2596 mbedtls_cipher_info_from_string()
2597 mbedtls_ecp_curve_info_from_name()
2598 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002599 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002600 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02002601
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02002602Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01002603 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002604 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002605 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002606
2607API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002608 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
2609 new prototype, and mbedtls_ssl_set_read_timeout().
2610 * The following functions now return void:
2611 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02002612 mbedtls_ssl_conf_max_version()
2613 mbedtls_ssl_conf_min_version()
2614 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
2615 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02002616 an example implementation, see mbedtls_timing_delay_context and
2617 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002618 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002619 after a successful net_accept().
2620
2621Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002622 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
2623 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002624 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002625 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
2626
2627= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02002628
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01002629Security
2630 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02002631 extendedKeyUsage on the leaf certificate was lost (results not accessible
2632 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002633 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2634 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02002635
2636Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02002637 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02002638 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02002639 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01002640 * Add support for reading DH parameters with privateValueLength included
2641 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002642 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
2643 * Add support for id-at-uniqueIdentifier in X.509 names.
2644 * Add support for overriding snprintf() (except on Windows) and exit() in
2645 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00002646 * Add an option to use macros instead of function pointers in the platform
2647 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00002648 * Improved Makefiles for Windows targets by fixing library targets and making
2649 cross-compilation easier (thanks to Alon Bar-Lev).
2650 * The benchmark program also prints heap usage for public-key primitives
2651 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
2652 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
2653 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002654 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002655 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002656 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002657 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002658 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
2659 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01002660
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01002661Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01002662 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
2663 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02002664 * Fix bug in entropy.c when THREADING_C is also enabled that caused
2665 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02002666 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
2667 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02002668 * Fix bug in ssl_mail_client when password is longer that username (found
2669 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02002670 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
2671 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02002672 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
2673 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02002674 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02002675 doing it at runtime (using uname) rather that compile time.
2676 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
2677 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02002678 ssl_write() is called before the handshake is finished (introduced in
2679 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01002680 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01002681 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00002682 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
2683 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00002684 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00002685 versions of mingw64 (found by kxjhlele).
2686 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00002687 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00002688 platforms.
2689 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
2690 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00002691 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02002692 in 1.3.10).
2693 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02002694 * Add missing dependency on SHA-256 in some x509 programs (reported by
2695 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002696 * Fix bug related to ssl_set_curves(): the client didn't check that the
2697 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02002698
2699Changes
2700 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02002701 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02002702 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002703 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002704 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00002705 * compat-1.2.h and openssl.h are deprecated.
2706 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002707 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00002708 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00002709 * ssl_set_own_cert() no longer calls pk_check_pair() since the
2710 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00002711 * Move from SHA-1 to SHA-256 in example programs using signatures
2712 (suggested by Thorsten Mühlfelder).
2713 * Remove some unneeded inclusions of header files from the standard library
2714 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002715 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02002716 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01002717 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002718
2719= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00002720Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002721 * NULL pointer dereference in the buffer-based allocator when the buffer is
2722 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002723 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002724 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002725 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002726 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002727 client certificate) (found using Codenomicon Defensics).
2728 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
2729 (TLS server is not affected if it doesn't ask for a client certificate)
2730 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002731 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00002732 (TLS server is not affected if it doesn't ask for a client certificate)
2733 (found using Codenomicon Defensics).
2734 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002735 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002736 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002737
2738Features
2739 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002740 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01002741 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01002742 * Add function pk_check_pair() to test if public and private keys match.
2743 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01002744 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01002745 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02002746 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01002747 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01002748 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
2749 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002750 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01002751 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00002752 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
2753 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002754 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002755 ciphersuite/certificate.
2756
2757Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01002758 * Stack buffer overflow if ctr_drbg_update() is called with too large
2759 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002760 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
2761 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002762 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01002763 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01002764 by Julian Ospald).
2765 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00002766 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
2767 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00002768 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00002769 Peter Vaskovic).
2770 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00002771 * ssl_get_verify_result() now works even if the handshake was aborted due
2772 to a failed verification (found by Fredrik Axelsson).
2773 * Skip writing and parsing signature_algorithm extension if none of the
2774 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00002775 issue with some servers when a zero-length extension was sent. (Reported
2776 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002777 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01002778 (found by Hendrik van den Boogaard).
2779
2780Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01002781 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002782 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01002783 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01002784 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01002785 * Forbid repeated extensions in X.509 certificates.
2786 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01002787 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002788 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01002789 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01002790 * It is now possible to disable negotiation of truncated HMAC server-side
2791 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00002792 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002793 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02002794 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002795
2796= PolarSSL 1.3.9 released 2014-10-20
2797Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002798 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02002799 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
2800 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02002801 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02002802 (found using Codenomicon Defensics).
2803 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002804 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002805 Defensics).
2806
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02002807Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02002808 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02002809 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02002810 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02002811 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
2812 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02002813 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002814 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
2815 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02002816 * ssl_read() could return non-application data records on server while
2817 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02002818 * Server-initiated renegotiation would fail with non-blocking I/O if the
2819 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02002820 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02002821 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02002822 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02002823 * x509_crt_parse() did not increase total_failed on PEM error
2824 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002825 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002826 Vialletelle).
2827
2828Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02002829 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
2830 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02002831 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
2832 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002833 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
2834 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02002835 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2836 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02002837 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002838 RSA keys.
2839 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002840 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02002841 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02002842
2843= PolarSSL 1.3.8 released 2014-07-11
2844Security
2845 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2846 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02002847 when a GCM suite was chosen.
2848
2849Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02002850 * Add CCM module and cipher mode to Cipher Layer
2851 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02002852 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02002853 modules (certificates, CRLs and CSRs).
2854 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02002855 * Add example config.h for PSK with CCM, optimized for low RAM usage.
2856 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02002857 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
2858 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02002859 * Add server-side enforcement of sent renegotiation requests
2860 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02002861 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02002862 ciphersuites to use and save some memory if the list is small.
2863
2864Changes
Paul Bakker34617722014-06-13 17:20:13 +02002865 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
2866 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02002867 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02002868 against unwanted compiler optimizations
2869 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02002870 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
2871 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02002872 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02002873 usage pattern
2874
Paul Bakker1ebc0c52014-05-22 15:47:58 +02002875Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02002876 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02002877 * Enforce alignment in the buffer allocator even if buffer is not aligned
2878 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02002879 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2880 size (found by TrustInSoft)
2881 * Fix WSAStartup() return value check (found by Peter Vaskovic)
2882 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02002883 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002884 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02002885 * Fix DER output of gen_key app (found by Gergely Budai)
2886 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002887 use with some ciphersuites and versions (RC4 in all versions, CBC with
2888 versions < TLS 1.1).
2889 * Very large records using more than 224 bytes of padding were incorrectly
2890 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02002891 * Very large records using less padding could cause a buffer overread of up
2892 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02002893 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
2894 been removed in 1.3.6.)
2895 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07002896 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02002897 1.3.6.)
2898 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02002899 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2900 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02002901 * Fix off-by-one error in parsing Supported Point Format extension that
2902 caused some handshakes to fail.
2903 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02002904 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02002905 (Failure rate <= 1/255 with common DHM moduli.)
2906 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02002907 * Fix base64_decode() to return and check length correctly (in case of
2908 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02002909 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02002910 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02002911
Paul Bakkerc73079a2014-04-25 16:34:30 +02002912= PolarSSL 1.3.7 released on 2014-05-02
2913Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02002914 * debug_set_log_mode() added to determine raw or full logging
2915 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02002916 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02002917 run-time
2918
2919Changes
Paul Bakker92478c32014-04-25 15:18:34 +02002920 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02002921 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02002922 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02002923 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02002924 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02002925 * Ciphersuites based on RC4 now have the lowest priority by default
2926
2927Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02002928 * Only iterate over actual certificates in ssl_write_certificate_request()
2929 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02002930 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02002931 Karger)
2932 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02002933 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
2934 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02002935 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02002936 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02002937 * rsa_check_pubkey() now allows an E up to N
2938 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02002939 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02002940 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00002941 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07002942 * Some parts of ssl_tls.c were compiled even when the module was disabled.
2943 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02002944 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02002945 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002946
Paul Bakker27e36d32014-04-08 12:33:37 +02002947= PolarSSL 1.3.6 released on 2014-04-11
2948
Paul Bakker1cfc4582014-04-09 15:25:13 +02002949Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002950 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02002951 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002952 * Enable verification of the keyUsage extension for CA and leaf
2953 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02002954 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02002955 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
2956
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02002957Changes
2958 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02002959 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02002960 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02002961 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002962 * Reject certificates with times not in UTC, per RFC 5280.
2963
2964Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02002965 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
2966 (Found by Watson Ladd.)
2967 * The notAfter date of some certificates was no longer checked since 1.3.5.
2968 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02002969 certificate. If the user-supplied chain contains only one certificates,
2970 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002971 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002972 TrustInSoft)
2973
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01002974Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02002975 * The length of various ClientKeyExchange messages was not properly checked.
2976 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02002977 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02002978 calculation of RR.
2979 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02002980 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
2981 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07002982 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
2983 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01002984 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
2985 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01002986 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02002987 error if the output buffer was just 1 byte too small.
2988 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02002989 * Calling pk_debug() on an RSA-alt key would segfault.
2990 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
Manuel Pégourié-Gonnard78848372014-04-10 17:45:07 +02002991 * Potential buffer overwrite in pem_write_buffer() because of low length
2992 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002993 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01002994 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01002995
2996= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002997Features
Paul Bakker6a28e722014-02-06 13:41:55 +01002998 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01002999 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01003000 * Single Platform compatilibity layer (for memory / printf / fprintf)
3001 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003002 * Ability to force the entropy module to use SHA-256 as its basis
3003 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01003004 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01003005 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01003006 * Support for reading EC keys that use SpecifiedECDomain in some cases.
3007 * Entropy module now supports seed writing and reading
3008
Paul Bakker47703a02014-02-06 15:01:20 +01003009Changes
3010 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01003011 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01003012 now thread-safe if POLARSSL_THREADING_C defined
3013 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003014 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3015 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003016 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01003017 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003018 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003019 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3020
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01003021Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003022 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01003023 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01003024 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003025 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01003026 * Forbid sequence number wrapping
3027 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003028 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003029 TrustInSoft)
3030
3031Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003032 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01003033 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01003034 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01003035 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01003036 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01003037 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10003038 * Fixed dependency issues in test suite
3039 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003040 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3041 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01003042 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003043 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003044 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003045 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01003046 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003047 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01003048 * ssl_srv was leaking memory when client presented a timed out ticket
3049 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01003050 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3051 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01003052 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01003053 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003054 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01003055 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01003056
Paul Bakker0ac99ca2014-01-22 13:08:44 +01003057= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01003058Features
Paul Bakker556efba2014-01-24 15:38:12 +01003059 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01003060 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01003061 * Support for AES CFB8 mode
3062 * Support for deterministic ECDSA (RFC 6979)
3063
3064Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01003065 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01003066 * Replaced expired test certificate
3067 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01003068 * net module handles timeouts on blocking sockets better (found by Tilman
3069 Sauerbeck)
3070 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01003071
3072Security
Paul Bakker3eb96732014-01-22 13:08:19 +01003073 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01003074 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01003075
3076= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01003077Features
3078 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01003079 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01003080 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01003081 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01003082 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01003083 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01003084 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01003085 * SSL Pthread-based server example added (ssl_pthread_server)
3086
3087Changes
3088 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01003089 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01003090 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01003091 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01003092 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01003093 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01003094 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01003095 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003096 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01003097
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003098Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01003099 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01003100 * Fixed X.509 hostname comparison (with non-regular characters)
3101 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01003102 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01003103 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01003104 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01003105 * Memory leak in benchmark application
3106 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01003107 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3108 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003109 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01003110 ssl_write_certificate() (found by TrustInSoft)
3111
3112Security
3113 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003114 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01003115
3116= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01003117Features
Paul Bakker16421222013-10-28 14:37:09 +01003118 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01003119 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01003120 * Support for Camellia-GCM mode and ciphersuites
3121
Paul Bakkere1121b62013-10-31 14:37:37 +01003122Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01003123 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003124 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01003125 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01003126 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01003127
Paul Bakker677377f2013-10-28 12:54:26 +01003128Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003129 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01003130 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01003131 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01003132 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003133 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003134 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01003135 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01003136 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003137 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02003138
3139= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02003140Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02003141 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02003142 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02003143 * Support for RSA-PSK key-exchange and ciphersuites
3144
Paul Bakker16770332013-10-11 09:59:44 +02003145Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02003146 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003147 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02003148 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3149 * config.h is more script-friendly
3150
3151Bugfix
3152 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02003153 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003154 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02003155 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02003156 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02003157 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02003158 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003159 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01003160
3161= PolarSSL 1.3.0 released on 2013-10-01
3162Features
3163 * Elliptic Curve Cryptography module added
3164 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02003165 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3166 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003167 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003168 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02003169 * Ability to specify allowed ciphersuites based on the protocol version.
3170 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02003171 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02003172 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02003173 * Threading abstraction layer added (dummy / pthread / alternate)
3174 * Public Key abstraction layer added
3175 * Parsing Elliptic Curve keys
3176 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003177 * Support for max_fragment_length extension (RFC 6066)
3178 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02003179 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02003180 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
3181 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003182 * Certificate Request (CSR) generation with extensions (key_usage,
3183 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003184 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02003185 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00003186 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01003187 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01003188 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003189
3190Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003191 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3192 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01003193 * Introduced separate SSL Ciphersuites module that is based on
3194 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02003195 * Internals for SSL module adapted to have separate IV pointer that is
3196 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003197 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02003198 prototypes for the RSA sign and verify functions changed as a result
3199 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02003200 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003201 and maximum protocol version
3202 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02003203 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02003204 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02003205 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
3206 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02003207 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003208 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
3209 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003210 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003211 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02003212
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003213Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02003214 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02003215 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003216 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02003217 * Fixed file descriptor leaks
3218
3219Security
3220 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003221 (found by Cyril Arnaud and Pierre-Alain Fouque)
3222
3223
3224= Version 1.2.14 released 2015-05-??
3225
3226Security
3227 * Fix potential invalid memory read in the server, that allows a client to
3228 crash it remotely (found by Caj Larsson).
3229 * Fix potential invalid memory read in certificate parsing, that allows a
3230 client to crash the server remotely if client authentication is enabled
3231 (found using Codenomicon Defensics).
3232 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3233 https://dl.acm.org/citation.cfm?id=2714625
3234
3235Bugfix
3236 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3237 * Fix hardclock() (only used in the benchmarking program) with some
3238 versions of mingw64 (found by kxjhlele).
3239 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3240 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3241 platforms (found with Coverity Scan).
3242
3243= Version 1.2.13 released 2015-02-16
3244Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3245 this will be made in the 1.2 branch at this point.
3246
3247Security
3248 * Fix remotely-triggerable uninitialised pointer dereference caused by
3249 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3250 for a client certificate) (found using Codenomicon Defensics).
3251 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3252 (TLS server is not affected if it doesn't ask for a client certificate)
3253 (found using Codenomicon Defensics).
3254 * Fix potential stack overflow while parsing crafted X.509 certificates
3255 (TLS server is not affected if it doesn't ask for a client certificate)
3256 found using Codenomicon Defensics).
3257 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3258 (TLS server is not affected if it doesn't ask for a client certificate).
3259
3260Bugfix
3261 * Fix potential undefined behaviour in Camellia.
3262 * Fix memory leaks in PKCS#5 and PKCS#12.
3263 * Stack buffer overflow if ctr_drbg_update() is called with too large
3264 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3265 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3266 in 1.2.12).
3267 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3268 Peter Vaskovic).
3269 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3270 * ssl_get_verify_result() now works even if the handshake was aborted due
3271 to a failed verification (found by Fredrik Axelsson).
3272 * Skip writing and parsing signature_algorithm extension if none of the
3273 key exchanges enabled needs certificates. This fixes a possible interop
3274 issue with some servers when a zero-length extension was sent. (Reported
3275 by Peter Dettman.)
3276 * On a 0-length input, base64_encode() did not correctly set output length
3277 (found by Hendrik van den Boogaard).
3278
3279Changes
3280 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3281 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003282 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3283 length of an X.509 verification chain (default = 8).
3284= Version 1.2.12 released 2014-10-24
3285
3286Security
3287 * Remotely-triggerable memory leak when parsing some X.509 certificates
3288 (server is not affected if it doesn't ask for a client certificate).
3289 (Found using Codenomicon Defensics.)
3290
3291Bugfix
3292 * Fix potential bad read in parsing ServerHello (found by Adrien
3293 Vialletelle).
3294 * ssl_close_notify() could send more than one message in some circumstances
3295 with non-blocking I/O.
3296 * x509_crt_parse() did not increase total_failed on PEM error
3297 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3298 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3299 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3300 * ssl_read() could return non-application data records on server while
3301 renegotation was pending, and on client when a HelloRequest was received.
3302 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3303
3304Changes
3305 * X.509 certificates with more than one AttributeTypeAndValue per
3306 RelativeDistinguishedName are not accepted any more.
3307 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3308 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003309 * Accept spaces at end of line or end of buffer in base64_decode().
3310
3311= Version 1.2.11 released 2014-07-11
3312Features
3313 * Entropy module now supports seed writing and reading
3314
3315Changes
3316 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3317 * Improvements to the CMake build system, contributed by Julian Ospald.
3318 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3319 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3320 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3321 * Use UTC time to check certificate validity.
3322 * Reject certificates with times not in UTC, per RFC 5280.
3323 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3324 against unwanted compiler optimizations
3325
3326Security
3327 * Forbid change of server certificate during renegotiation to prevent
3328 "triple handshake" attack when authentication mode is optional (the
3329 attack was already impossible when authentication is required).
3330 * Check notBefore timestamp of certificates and CRLs from the future.
3331 * Forbid sequence number wrapping
3332 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3333 TrustInSoft)
3334 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3335 It was possible to crash the server (and client) using crafted messages
3336 when a GCM suite was chosen.
3337
3338Bugfix
3339 * Fixed X.509 hostname comparison (with non-regular characters)
3340 * SSL now gracefully handles missing RNG
3341 * crypt_and_hash app checks MAC before final decryption
3342 * Fixed x509_crt_parse_path() bug on Windows platforms
3343 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3344 TrustInSoft)
3345 * Fixed potential overflow in certificate size verification in
3346 ssl_write_certificate() (found by TrustInSoft)
3347 * Fix ASM format in bn_mul.h
3348 * Potential memory leak in bignum_selftest()
3349 * Replaced expired test certificate
3350 * ssl_mail_client now terminates lines with CRLF, instead of LF
3351 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3352 * Fixed testing with out-of-source builds using cmake
3353 * Fixed version-major intolerance in server
3354 * Fixed CMake symlinking on out-of-source builds
3355 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3356 Alex Wilson.)
3357 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3358 out_ctr failed
3359 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3360 of one of them failed
3361 * x509_get_current_time() uses localtime_r() to prevent thread issues
3362 * Some example server programs were not sending the close_notify alert.
3363 * Potential memory leak in mpi_exp_mod() when error occurs during
3364 calculation of RR.
3365 * Improve interoperability by not writing extension length in ClientHello
3366 when no extensions are present (found by Matthew Page)
3367 * rsa_check_pubkey() now allows an E up to N
3368 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
3369 * mpi_fill_random() was creating numbers larger than requested on
3370 big-endian platform when size was not an integer number of limbs
3371 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
3372 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3373 size (found by TrustInSoft)
3374 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
3375 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3376 interpret semicolons as comment delimiters (found by Barry K. Nathan).
3377 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
3378 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02003379 tight buffers)
3380
3381= Version 1.2.10 released 2013-10-07
3382Changes
3383 * Changed RSA blinding to a slower but thread-safe version
3384
3385Bugfix
3386 * Fixed memory leak in RSA as a result of introduction of blinding
3387 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003388 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02003389
3390= Version 1.2.9 released 2013-10-01
3391Changes
3392 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
3393
3394Bugfix
3395 * Fixed potential memory leak when failing to resume a session
3396 * Fixed potential file descriptor leaks (found by Remi Gacogne)
3397 * Minor fixes
3398
3399Security
3400 * Fixed potential heap buffer overflow on large hostname setting
3401 * Fixed potential negative value misinterpretation in load_file()
3402 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02003403 (found by Cyril Arnaud and Pierre-Alain Fouque)
3404
3405= Version 1.2.8 released 2013-06-19
3406Features
3407 * Parsing of PKCS#8 encrypted private key files
3408 * PKCS#12 PBE and derivation functions
3409 * Centralized module option values in config.h to allow user-defined
3410 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
3411
3412Changes
3413 * HAVEGE random generator disabled by default
3414 * Internally split up x509parse_key() into a (PEM) handler function
3415 and specific DER parser functions for the PKCS#1 and unencrypted
3416 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00003417 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02003418 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
3419 config.h)
3420 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
3421 old PBKDF2 module
3422
3423Bugfix
3424 * Secure renegotiation extension should only be sent in case client
3425 supports secure renegotiation
3426 * Fixed offset for cert_type list in ssl_parse_certificate_request()
3427 * Fixed const correctness issues that have no impact on the ABI
3428 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003429 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02003430 instead of the x509parse_crt() wrapper that can also parse PEM
3431 certificates
3432 * x509parse_crtpath() is now reentrant and uses more portable stat()
3433 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
3434 * Fixed values for 2-key Triple DES in cipher layer
3435 * ssl_write_certificate_request() can handle empty ca_chain
3436
3437Security
3438 * A possible DoS during the SSL Handshake, due to faulty parsing of
3439 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3440
3441= Version 1.2.7 released 2013-04-13
3442Features
3443 * Ability to specify allowed ciphersuites based on the protocol version.
3444
3445Changes
3446 * Default Blowfish keysize is now 128-bits
3447 * Test suites made smaller to accommodate Raspberry Pi
3448
3449Bugfix
3450 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01003451 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01003452
3453= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01003454Bugfix
3455 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01003456 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01003457 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01003458 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01003459 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01003460 * Fixed assembly code for ARM (Thumb and regular) for some compilers
3461
3462Changes
3463 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01003464 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
3465 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01003466 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
3467 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01003468 * Re-added handling for SSLv2 Client Hello when the define
3469 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01003470 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01003471 information (not the entire chain)
3472
3473Security
Paul Bakker8804f692013-02-28 18:06:26 +01003474 * Removed further timing differences during SSL message decryption in
3475 ssl_decrypt_buf()
3476 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01003477 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01003478 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003479
3480= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01003481Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003482 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01003483 * Debug messages about padding errors during SSL message decryption are
3484 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01003485 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003486 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01003487 POLARSSL_SSL_ALL_ALERT_MESSAGES
3488
3489Security
3490 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01003491 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01003492
Paul Bakker68884e32013-01-07 18:20:04 +01003493= Version 1.2.4 released 2013-01-25
3494Changes
Paul Bakker1961b702013-01-25 14:49:24 +01003495 * More advanced SSL ciphersuite representation and moved to more dynamic
3496 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01003497 * Added ssl_handshake_step() to allow single stepping the handshake process
3498
Paul Bakker21dca692013-01-03 11:41:08 +01003499Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01003500 * Memory leak when using RSA_PKCS_V21 operations fixed
3501 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01003502 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01003503 without DN list
3504
3505= Version 1.2.3 released 2012-11-26
3506Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003507 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01003508
3509= Version 1.2.2 released 2012-11-24
3510Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003511 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01003512 data
Paul Bakker7c90da92012-11-23 14:02:40 +01003513 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003514
3515Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01003516 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01003517 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00003518
3519= Version 1.2.1 released 2012-11-20
3520Changes
3521 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00003522 bottom-up (Peer cert depth is 0)
3523
Paul Bakkerd9374b02012-11-02 11:02:58 +00003524Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00003525 * Fixes for MSVC6
3526 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01003527 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3528 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00003529 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00003530 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003531 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00003532
3533= Version 1.2.0 released 2012-10-31
3534Features
3535 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00003536 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
3537 default!
3538 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00003539 * Added support for multi-domain certificates through the X509 Subject
3540 Alternative Name extension
3541 * Added preliminary ASN.1 buffer writing support
3542 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00003543 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00003544 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00003545 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00003546 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00003547 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003548 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003549 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00003550 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00003551 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00003552 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00003553 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00003554 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00003555 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00003556 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00003557 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00003558 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00003559 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00003560 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00003561 * Added option to add minimum accepted SSL/TLS protocol version
3562
Paul Bakker048d04e2012-02-12 17:31:04 +00003563Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00003564 * Removed redundant POLARSSL_DEBUG_MSG define
3565 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00003566 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00003567 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00003568 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00003569 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
3570 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00003571 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00003572 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00003573 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
3574 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00003575 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00003576 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00003577 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00003578 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00003579 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00003580
3581Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00003582 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00003583 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00003584 * Fixed potential heap corruption in x509_name allocation
3585 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003586 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00003587 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00003588 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00003589 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00003590 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00003591 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00003592 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00003593 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00003594 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00003595 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00003596
3597Security
Paul Bakker452d5322012-04-05 12:07:34 +00003598 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003599 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02003600
3601= Version 1.1.8 released on 2013-10-01
3602Bugfix
3603 * Fixed potential memory leak when failing to resume a session
3604 * Fixed potential file descriptor leaks
3605
3606Security
3607 * Potential buffer-overflow for ssl_read_record() (independently found by
3608 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
3609 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02003610 * Potential heap buffer overflow on large hostname setting
3611
3612= Version 1.1.7 released on 2013-06-19
3613Changes
3614 * HAVEGE random generator disabled by default
3615
3616Bugfix
3617 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003618 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02003619 instead of the x509parse_crt() wrapper that can also parse PEM
3620 certificates
3621 * Fixed values for 2-key Triple DES in cipher layer
3622 * ssl_write_certificate_request() can handle empty ca_chain
3623
3624Security
3625 * A possible DoS during the SSL Handshake, due to faulty parsing of
3626 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3627
3628= Version 1.1.6 released on 2013-03-11
3629Bugfix
3630 * Fixed net_bind() for specified IP addresses on little endian systems
3631
3632Changes
3633 * Allow enabling of dummy error_strerror() to support some use-cases
3634 * Debug messages about padding errors during SSL message decryption are
3635 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
3636
3637Security
3638 * Removed timing differences during SSL message decryption in
3639 ssl_decrypt_buf()
3640 * Removed timing differences due to bad padding from
3641 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01003642 operations
3643
3644= Version 1.1.5 released on 2013-01-16
3645Bugfix
3646 * Fixed MPI assembly for SPARC64 platform
3647 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
3648 * mpi_add_abs() now correctly handles adding short numbers to long numbers
3649 with carry rollover
3650 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
3651 * Prevent reading over buffer boundaries on X509 certificate parsing
3652 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
3653 #52)
3654 * Fixed possible segfault in mpi_shift_r() (found by Manuel
3655 Pégourié-Gonnard)
3656 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3657 Pégourié-Gonnard)
3658 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
3659 * Memory leak when using RSA_PKCS_V21 operations fixed
3660 * Handle encryption with private key and decryption with public key as per
3661 RFC 2313
3662 * Fixes for MSVC6
3663
3664Security
3665 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00003666 Vanderbeken)
3667
3668= Version 1.1.4 released on 2012-05-31
3669Bugfix
3670 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
3671 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00003672 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
3673
3674= Version 1.1.3 released on 2012-04-29
3675Bugfix
3676 * Fixed random MPI generation to not generate more size than requested.
3677
3678= Version 1.1.2 released on 2012-04-26
3679Bugfix
3680 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
3681 Hui Dong)
3682
3683Security
3684 * Fixed potential memory corruption on miscrafted client messages (found by
3685 Frama-C team at CEA LIST)
3686 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00003687 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003688
3689= Version 1.1.1 released on 2012-01-23
3690Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00003691 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00003692 (Closes ticket #47, found by Hugo Leisink)
3693 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003694 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00003695 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00003696
3697= Version 1.1.0 released on 2011-12-22
3698Features
Darryl Green11999bb2018-03-13 15:22:58 +00003699 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00003700 SSL contexts without needing to set all non-connection-specific
3701 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00003702 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00003703 supported version to a server to help buggy server implementations.
3704 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00003705 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00003706 introspection functions (Closes ticket #40)
3707 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00003708 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00003709 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003710 entropy sources
3711
Paul Bakkerd246ed32011-10-06 13:18:27 +00003712Changes
3713 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00003714 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00003715 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00003716 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00003717 * Added an EXPLICIT tag number parameter to x509_get_ext()
3718 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00003719 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
3720 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00003721 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00003722 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00003723 * Loads of minimal changes to better support WINCE as a build target
3724 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00003725 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
3726 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00003727 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
3728 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01003729 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00003730 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00003731 a consequence in library code and programs
3732 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01003733 * Added permissive certificate parsing to x509parse_crt() and
3734 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00003735 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003736 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003737 * All error codes are now negative. Even on mermory failures and IO errors.
3738
3739Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00003740 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
3741 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00003742 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
3743 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00003744 * Allowed X509 key usage parsing to accept 4 byte values instead of the
3745 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00003746 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
3747 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00003748 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00003749 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00003750 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00003751 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003752 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00003753 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00003754
3755= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00003756Features
Paul Bakker343a8702011-06-09 14:27:58 +00003757 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00003758 * Added rsa_encrypt and rsa_decrypt simple example programs.
3759
3760Changes
3761 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00003762 codes instead of integers
3763
3764Bugfix
3765 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00003766 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003767
3768= Version 0.99-pre5 released on 2011-05-26
3769Features
Paul Bakkera35aa542013-03-06 17:06:21 +01003770 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00003771 (AES CTR, Camellia CTR, XTEA CBC) including the option to
3772 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00003773 * Functions requiring File System functions can now be disabled
3774 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00003775 * A error_strerror function() has been added to translate between
3776 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00003777 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003778 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00003779 * Added ssl_mail_client and ssl_fork_server as example programs.
3780
3781Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003782 * Major argument / variable rewrite. Introduced use of size_t
3783 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00003784 better unsigned / signed use. Renamed internal bigint types
3785 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00003786 * mpi_init() and mpi_free() now only accept a single MPI
3787 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01003788 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00003789 is now done with a PLUS instead of an OR as error codes
3790 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01003791 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
3792 net_recv() now returns 0 on EOF instead of
3793 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
3794 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00003795 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
3796 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01003797 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00003798 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00003799 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00003800
3801= Version 0.99-pre4 released on 2011-04-01
3802Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00003803 * Added support for PKCS#1 v2.1 encoding and thus support
3804 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00003805 * Reading of Public Key files incorporated into default x509
3806 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00003807 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003808 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01003809
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003810Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003811 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00003812 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01003813 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003814 does not zeroize memory in advance anymore. Use rsa_init()
3815 before parsing a key or keyfile!
3816
3817Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01003818 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00003819 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
3820 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00003821 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
3822 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003823 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00003824 length salt lengths
3825
Paul Bakker96743fc2011-02-12 14:30:57 +00003826= Version 0.99-pre3 released on 2011-02-28
3827This release replaces version 0.99-pre2 which had possible copyright issues.
3828Features
Paul Bakkera9507c02011-02-12 15:27:28 +00003829 * Parsing PEM private keys encrypted with DES and AES
3830 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00003831 * Added crl_app program to allow easy reading and
3832 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01003833
Paul Bakker96743fc2011-02-12 14:30:57 +00003834Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003835 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00003836 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00003837 systems only using DER encoding
3838
3839Bugfixes
3840 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00003841 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00003842 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003843 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003844 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003845 certificates (found by Mads Kiilerich)
3846 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01003847 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00003848 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00003849 found by Boris Krasnovskiy)
3850
3851Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01003852 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00003853 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00003854 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00003855
Paul Bakkerb63b0af2011-01-13 17:54:59 +00003856= Version 0.99-pre1 released on 2011-01-30
3857Features
Paul Bakker1b57b062011-01-06 15:48:19 +00003858Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00003859 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00003860 * Added reading of DHM context from memory and file
3861 * Improved X509 certificate parsing to include extended
3862 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00003863 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00003864 against the available CRLs
3865 * Detection for DES weak keys and parity bits added
3866 * Improvements to support integration in other
3867 applications:
3868 + Added generic message digest and cipher wrapper
3869 + Improved information about current capabilities,
3870 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00003871 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00003872 verification to allow external blacklisting
3873 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00003874 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00003875 libpkcs11-helper library
3876
3877Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00003878 * x509parse_time_expired() checks time in addition to
3879 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01003880 * The ciphers member of ssl_context and the cipher member
3881 of ssl_session have been renamed to ciphersuites and
3882 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00003883 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00003884 altogether
3885
3886= Version 0.14.0 released on 2010-08-16
3887Features
3888 * Added support for SSL_EDH_RSA_AES_128_SHA and
3889 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
3890 * Added compile-time and run-time version information
3891 * Expanded ssl_client2 arguments for more flexibility
3892 * Added support for TLS v1.1
3893
3894Changes
3895 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01003896 * Removed dependency on rand() in rsa_pkcs1_encrypt().
3897 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00003898 changed the prototype of rsa_pkcs1_encrypt(),
3899 rsa_init() and rsa_gen_key().
3900 * Some SSL defines were renamed in order to avoid
3901 future confusion
3902
3903Bug fixes
3904 * Fixed CMake out of source build for tests (found by
3905 kkert)
3906 * rsa_check_private() now supports PKCS1v2 keys as well
3907 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
3908 generator
3909
3910= Version 0.13.1 released on 2010-03-24
3911Bug fixes
3912 * Fixed Makefile in library that was mistakenly merged
3913 * Added missing const string fixes
3914
3915= Version 0.13.0 released on 2010-03-21
3916Features
3917 * Added option parsing for host and port selection to
3918 ssl_client2
3919 * Added support for GeneralizedTime in X509 parsing
3920 * Added cert_app program to allow easy reading and
3921 printing of X509 certificates from file or SSL
3922 connection.
3923
3924Changes
3925 * Added const correctness for main code base
3926 * X509 signature algorithm determination is now
3927 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01003928 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00003929 identical interface (returning int result values)
3930 * Changed ARC4 to use separate input/output buffer
3931 * Added reset function for HMAC context as speed-up
3932 for specific use-cases
3933
3934Bug fixes
3935 * Fixed bug resulting in failure to send the last
3936 certificate in the chain in ssl_write_certificate() and
3937 ssl_write_certificate_request() (found by fatbob)
3938 * Added small fixes for compiler warnings on a Mac
3939 (found by Frank de Brabander)
3940 * Fixed algorithmic bug in mpi_is_prime() (found by
3941 Smbat Tonoyan)
3942
3943= Version 0.12.1 released on 2009-10-04
3944Changes
3945 * Coverage test definitions now support 'depends_on'
3946 tagging system.
3947 * Tests requiring specific hashing algorithms now honor
3948 the defines.
3949
3950Bug fixes
3951 * Changed typo in #ifdef in x509parse.c (found
3952 by Eduardo)
3953
3954= Version 0.12.0 released on 2009-07-28
3955Features
3956 * Added CMake makefiles as alternative to regular Makefiles.
3957 * Added preliminary Code Coverage tests for AES, ARC4,
3958 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
3959 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
3960 and X509parse.
3961
3962Changes
3963 * Error codes are not (necessarily) negative. Keep
3964 this is mind when checking for errors.
3965 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
3966 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
3967 * Changed interface for AES and Camellia setkey functions
3968 to indicate invalid key lengths.
3969
3970Bug fixes
3971 * Fixed include location of endian.h on FreeBSD (found by
3972 Gabriel)
3973 * Fixed include location of endian.h and name clash on
3974 Apples (found by Martin van Hensbergen)
3975 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01003976 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00003977 (found by code coverage tests)
3978 * Prevented use of long long in bignum if
3979 POLARSSL_HAVE_LONGLONG not defined (found by Giles
3980 Bathgate).
3981 * Fixed incorrect handling of negative strings in
3982 mpi_read_string() (found by code coverage tests).
3983 * Fixed segfault on handling empty rsa_context in
3984 rsa_check_pubkey() and rsa_check_privkey() (found by
3985 code coverage tests).
3986 * Fixed incorrect handling of one single negative input
3987 value in mpi_add_abs() (found by code coverage tests).
3988 * Fixed incorrect handling of negative first input
3989 value in mpi_sub_abs() (found by code coverage tests).
3990 * Fixed incorrect handling of negative first input
3991 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
3992 change also affects mpi_write_string() (found by code
3993 coverage tests).
3994 * Corrected is_prime() results for 0, 1 and 2 (found by
3995 code coverage tests).
3996 * Fixed Camellia and XTEA for 64-bit Windows systems.
3997
3998= Version 0.11.1 released on 2009-05-17
3999 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
4000 SHA-512 in rsa_pkcs1_sign()
4001
4002= Version 0.11.0 released on 2009-05-03
4003 * Fixed a bug in mpi_gcd() so that it also works when both
4004 input numbers are even and added testcases to check
4005 (found by Pierre Habouzit).
4006 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
4007 one way hash functions with the PKCS#1 v1.5 signing and
4008 verification.
4009 * Fixed minor bug regarding mpi_gcd located within the
4010 POLARSSL_GENPRIME block.
4011 * Fixed minor memory leak in x509parse_crt() and added better
4012 handling of 'full' certificate chains (found by Mathias
4013 Olsson).
4014 * Centralized file opening and reading for x509 files into
4015 load_file()
4016 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01004017 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00004018 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
4019 padlock and timing code.
4020 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
4021 responsible for crashes and unwanted behaviour.
4022 * Added support for Certificate Revocation List (CRL) parsing.
4023 * Added support for CRL revocation to x509parse_verify() and
4024 SSL/TLS code.
4025 * Fixed compatibility of XTEA and Camellia on a 64-bit system
4026 (found by Felix von Leitner).
4027
4028= Version 0.10.0 released on 2009-01-12
4029 * Migrated XySSL to PolarSSL
4030 * Added XTEA symmetric cipher
4031 * Added Camellia symmetric cipher
4032 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
4033 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
4034 * Fixed dangerous bug that can cause a heap overflow in
4035 rsa_pkcs1_decrypt (found by Christophe Devine)
4036
4037================================================================
4038XySSL ChangeLog
4039
4040= Version 0.9 released on 2008-03-16
4041
4042 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
4043 * Enabled support for large files by default in aescrypt2.c
4044 * Preliminary openssl wrapper contributed by David Barrett
4045 * Fixed a bug in ssl_write() that caused the same payload to
4046 be sent twice in non-blocking mode when send returns EAGAIN
4047 * Fixed ssl_parse_client_hello(): session id and challenge must
4048 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
4049 * Added user-defined callback debug function (Krystian Kolodziej)
4050 * Before freeing a certificate, properly zero out all cert. data
4051 * Fixed the "mode" parameter so that encryption/decryption are
4052 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01004053 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00004054 * Correctly handle the case in padlock_xcryptcbc() when input or
4055 output data is non-aligned by falling back to the software
4056 implementation, as VIA Nehemiah cannot handle non-aligned buffers
4057 * Fixed a memory leak in x509parse_crt() which was reported by Greg
4058 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
4059 Matthew Page who reported several bugs
4060 * Fixed x509_get_ext() to accept some rare certificates which have
4061 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
4062 * Added support on the client side for the TLS "hostname" extension
4063 (patch contributed by David Patino)
4064 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
4065 string is passed as the CN (bug reported by spoofy)
4066 * Added an option to enable/disable the BN assembly code
4067 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
4068 * Disabled obsolete hash functions by default (MD2, MD4); updated
4069 selftest and benchmark to not test ciphers that have been disabled
4070 * Updated x509parse_cert_info() to correctly display byte 0 of the
4071 serial number, setup correct server port in the ssl client example
4072 * Fixed a critical denial-of-service with X.509 cert. verification:
4073 peer may cause xyssl to loop indefinitely by sending a certificate
4074 for which the RSA signature check fails (bug reported by Benoit)
4075 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
4076 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
4077 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
4078 * Modified ssl_parse_client_key_exchange() to protect against
4079 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
4080 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
4081 * Updated rsa_gen_key() so that ctx->N is always nbits in size
4082 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
4083 David Barrett and Dusan Semen
4084
4085= Version 0.8 released on 2007-10-20
4086
4087 * Modified the HMAC functions to handle keys larger
4088 than 64 bytes, thanks to Stephane Desneux and gary ng
4089 * Fixed ssl_read_record() to properly update the handshake
4090 message digests, which fixes IE6/IE7 client authentication
4091 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
4092 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
4093 * Added user-defined callbacks for handling I/O and sessions
4094 * Added lots of debugging output in the SSL/TLS functions
4095 * Added preliminary X.509 cert. writing by Pascal Vizeli
4096 * Added preliminary support for the VIA PadLock routines
4097 * Added AES-CFB mode of operation, contributed by chmike
4098 * Added an SSL/TLS stress testing program (ssl_test.c)
4099 * Updated the RSA PKCS#1 code to allow choosing between
4100 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
4101 * Updated ssl_read() to skip 0-length records from OpenSSL
4102 * Fixed the make install target to comply with *BSD make
4103 * Fixed a bug in mpi_read_binary() on 64-bit platforms
4104 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
4105 * Fixed a long standing memory leak in mpi_is_prime()
4106 * Replaced realloc with malloc in mpi_grow(), and set
4107 the sign of zero as positive in mpi_init() (reported
4108 by Jonathan M. McCune)
4109
4110= Version 0.7 released on 2007-07-07
4111
4112 * Added support for the MicroBlaze soft-core processor
4113 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4114 connections from being established with non-blocking I/O
4115 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4116 * Fixed the "PIC register ebx clobbered in asm" bug
4117 * Added HMAC starts/update/finish support functions
4118 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4119 * Fixed the net_set_*block routines, thanks to Andreas
4120 * Added a few demonstration programs: md5sum, sha1sum,
4121 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4122 * Added new bignum import and export helper functions
4123 * Rewrote README.txt in program/ssl/ca to better explain
4124 how to create a test PKI
4125
4126= Version 0.6 released on 2007-04-01
4127
4128 * Ciphers used in SSL/TLS can now be disabled at compile
4129 time, to reduce the memory footprint on embedded systems
4130 * Added multiply assembly code for the TriCore and modified
4131 havege_struct for this processor, thanks to David Patiño
4132 * Added multiply assembly code for 64-bit PowerPCs,
4133 thanks to Peking University and the OSU Open Source Lab
4134 * Added experimental support of Quantum Cryptography
4135 * Added support for autoconf, contributed by Arnaud Cornet
4136 * Fixed "long long" compilation issues on IA-64 and PPC64
4137 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4138 was not being correctly defined on ARM and MIPS
4139
4140= Version 0.5 released on 2007-03-01
4141
4142 * Added multiply assembly code for SPARC and Alpha
4143 * Added (beta) support for non-blocking I/O operations
4144 * Implemented session resuming and client authentication
4145 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4146 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4147 * Improved the performance of the EDH key exchange
4148 * Fixed a bug that caused valid packets with a payload
4149 size of 16384 bytes to be rejected
4150
4151= Version 0.4 released on 2007-02-01
4152
4153 * Added support for Ephemeral Diffie-Hellman key exchange
4154 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4155 * Various improvement to the modular exponentiation code
4156 * Rewrote the headers to generate the API docs with doxygen
4157 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4158 generated) and in ssl_parse_client_hello (max. client
4159 version was not properly set), thanks to Didier Rebeix
4160 * Fixed another bug in ssl_parse_client_hello: clients with
4161 cipherlists larger than 96 bytes were incorrectly rejected
4162 * Fixed a couple memory leak in x509_read.c
4163
4164= Version 0.3 released on 2007-01-01
4165
4166 * Added server-side SSLv3 and TLSv1.0 support
4167 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01004168 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00004169 * Fixed a bug in the CBC code, thanks to dowst; also,
4170 the bignum code is no longer dependent on long long
4171 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4172 * Updated timing.c for improved compatibility with i386
4173 and 486 processors, thanks to Arnaud Cornet
4174
4175= Version 0.2 released on 2006-12-01
4176
4177 * Updated timing.c to support ARM and MIPS arch
4178 * Updated the MPI code to support 8086 on MSVC 1.5
4179 * Added the copyright notice at the top of havege.h
4180 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4181 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4182 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4183 * Fixed a bug in rsa_check_privkey that would wrongly cause
4184 valid RSA keys to be dismissed (thanks to oldwolf)
4185 * Fixed a bug in mpi_is_prime that caused some primes to fail
4186 the Miller-Rabin primality test
4187
4188 I'd also like to thank Younès Hafri for the CRUX linux port,
4189 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4190 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00004191
4192= Version 0.1 released on 2006-11-01