blob: fb231aa6953379bee27e7f8093b1fb72d59da744 [file] [log] [blame]
Paul Bakkerdaae3b72015-02-08 15:49:54 +01001mbed TLS ChangeLog (Sorted per branch, date)
Paul Bakker99ed6782011-01-05 14:48:42 +00002
Janos Follath56b38c22020-12-09 01:34:21 +00003= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +00004
5API changes
6 * The numerical values of the PSA Crypto API macros have been updated to
7 conform to version 1.0.0 of the specification.
8 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
9 The underlying stream cipher is determined by the key type
10 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
11 * The functions mbedtls_cipher_auth_encrypt() and
12 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
13 as they have no way to check if the output buffer is large enough.
14 Please use mbedtls_cipher_auth_encrypt_ext() and
15 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
16 Cryptofuzz. Fixes #3665.
17
18Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +000019 * Update the minimum required CMake version to 2.8.12. This silences a
20 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +000021
22New deprecations
23 * PSA_KEY_TYPE_CHACHA20 and PSA_KEY_TYPE_ARC4 have been deprecated.
24 Use PSA_ALG_STREAM_CIPHER instead.
25 * The functions mbedtls_cipher_auth_encrypt() and
26 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
27 functions mbedtls_cipher_auth_encrypt_ext() and
28 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
29 these new functions always append the tag to the ciphertext, and include
30 the tag in the ciphertext length.
31
32Features
Janos Follathd6ce1162020-12-09 16:32:01 +000033 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
34 ciphers, asymmetric signing/verification and key generation, validate_key
35 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +000036 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +000037 * In PSA, allow using a key declared with a base key agreement algorithm
38 in combined key agreement and derivation operations, as long as the key
39 agreement algorithm in use matches the algorithm the key was declared with.
40 This is currently non-standard behaviour, but expected to make it into a
41 future revision of the PSA Crypto standard.
42 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
43 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
44 external CMake projects that include this one to avoid CMake target name
45 clashes. The default value of this variable is "", so default target names
46 are unchanged.
47 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
48 Pascal, improved by Ron Eldor.
49 * In the PSA API, it is no longer necessary to open persistent keys:
50 operations now accept the key identifier. The type psa_key_handle_t is now
51 identical to psa_key_id_t instead of being platform-defined. This bridges
52 the last major gap to compliance with the PSA Cryptography specification
53 version 1.0.0. Opening persistent keys is still supported for backward
54 compatibility, but will be deprecated and later removed in future
55 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +000056 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
57 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
58 1.0.0 of the PSA Crypto API specification.
59
60Security
61 * The functions mbedtls_cipher_auth_encrypt() and
62 mbedtls_cipher_auth_decrypt() would write past the minimum documented
63 size of the output buffer when used with NIST_KW. As a result, code using
64 those functions as documented with NIST_KW could have a buffer overwrite
65 of up to 15 bytes, with consequences ranging up to arbitrary code
66 execution depending on the location of the output buffer.
67 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
68 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
69 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
70 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
71 which is how most uses of randomization in asymmetric cryptography
72 (including key generation, intermediate value randomization and blinding)
73 are implemented. This could cause failures or the silent use of non-random
74 values. A random generator can fail if it needs reseeding and cannot not
75 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
76 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
77 * Fix a compliance issue whereby we were not checking the tag on the
78 algorithm parameters (only the size) when comparing the signature in the
79 description part of the cert to the real signature. This meant that a
80 NULL algorithm parameters entry would look identical to an array of REAL
81 (size zero) to the library and thus the certificate would be considered
82 valid. However, if the parameters do not match in *any* way then the
83 certificate should be considered invalid, and indeed OpenSSL marks these
84 certs as invalid when mbedtls did not.
85 Many thanks to guidovranken who found this issue via differential fuzzing
86 and reported it in #3629.
87 * Zeroising of local buffers and variables which are used for calculations
88 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
89 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
90 functions to erase sensitive data from memory. Reported by
91 Johan Malmgren and Johan Uppman Bruce from Sectra.
92
93Bugfix
Janos Follath76027f62020-12-09 16:28:35 +000094 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
95 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +000096 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
97 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
98 * Include the psa_constant_names generated source code in the source tree
99 instead of generating it at build time. Fixes #3524.
100 * Fix rsa_prepare_blinding() to retry when the blinding value is not
101 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
102 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
103 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
104 Fixes #3647.
105 * Use socklen_t on Android and other POSIX-compliant system
106 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
107 Fix #3432.
108 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
109 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
110 psa_cipher_* functions compliant with the PSA Crypto API specification.
111 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
112 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
113 only the curves that support ECDSA, filter the list with
114 mbedtls_ecdsa_can_do().
115 * Fix psa_generate_key() returning an error when asked to generate
116 an ECC key pair on Curve25519 or secp244k1.
117 * Fix psa_key_derivation_output_key() to allow the output of a combined key
118 agreement and subsequent key derivation operation to be used as a key
119 inside of the PSA Crypto core.
120 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
121 chars. Fixes a build failure on platforms where char is unsigned. Fixes
122 #3794.
123 * Fix an off-by-one error in the additional data length check for
124 CCM, which allowed encryption with a non-standard length field.
125 Fixes #3719.
126 * Correct the default IV size for mbedtls_cipher_info_t structures using
127 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
128 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
129 defined. Fix contributed in #3571.
130 * Fix conditions for including string.h in error.c. Fixes #3866.
131 * psa_set_key_id() now also sets the lifetime to persistent for keys located
132 in a secure element.
133 * Attempting to create a volatile key with a non-zero key identifier now
134 fails. Previously the key identifier was just ignored when creating a
135 volatile key.
136 * Attempting to create or register a key with a key identifier in the vendor
137 range now fails.
138 * Fix build failures on GCC 11. Fixes #3782.
139 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
140 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
141 (an error condition) and the second operand was aliased to the result.
142 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
143 could go undetected, resulting in an incorrect result.
144 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
145 Fixes #2927.
146 * In PEM writing functions, fill the trailing part of the buffer with null
147 bytes. This guarantees that the corresponding parsing function can read
148 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
149 until this property was inadvertently broken in Mbed TLS 2.19.0.
150 Fixes #3682.
151 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
152 option on. In this configuration key management methods that are required
153 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
154 Fixes #3818. Reported by John Stroebel.
155
156Changes
157 * Reduce stack usage significantly during sliding window exponentiation.
158 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
159 * The PSA persistent storage format is updated to always store the key bits
160 attribute. No automatic upgrade path is provided. Previously stored keys
161 must be erased, or manually upgraded based on the key storage format
162 specification (docs/architecture/mbed-crypto-storage-specification.md).
163 Fixes #3740.
164 * Remove the zeroization of a pointer variable in AES rounds. It was valid
165 but spurious and misleading since it looked like a mistaken attempt to
166 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
167 Leti, France.
168
Janos Follath6012f0e2020-08-26 15:32:10 +0100169= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100170
171API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100172 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
173 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
174 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100175 Rename associated macros as well:
176 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
177 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
178 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
179 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
180
181Default behavior changes
182 * Stop storing persistent information about externally stored keys created
183 through PSA Crypto with a volatile lifetime. Reported in #3288 and
184 contributed by Steven Cooreman in #3382.
185
186Features
187 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
188 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
189 * Support building on e2k (Elbrus) architecture: correctly enable
190 -Wformat-signedness, and fix the code that causes signed-one-bit-field
191 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
192 <akemi_homura@kurisa.ch>.
193
194Security
195 * Fix a vulnerability in the verification of X.509 certificates when
196 matching the expected common name (the cn argument of
197 mbedtls_x509_crt_verify()) with the actual certificate name: when the
198 subjecAltName extension is present, the expected name was compared to any
199 name in that extension regardless of its type. This means that an
200 attacker could for example impersonate a 4-bytes or 16-byte domain by
201 getting a certificate for the corresponding IPv4 or IPv6 (this would
202 require the attacker to control that IP address, though). Similar attacks
203 using other subjectAltName name types might be possible. Found and
204 reported by kFYatek in #3498.
205 * When checking X.509 CRLs, a certificate was only considered as revoked if
206 its revocationDate was in the past according to the local clock if
207 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
208 certificates were never considered as revoked. On builds with
209 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
210 example, an untrusted OS attacking a secure enclave) could prevent
211 revocation of certificates via CRLs. Fixed by no longer checking the
212 revocationDate field, in accordance with RFC 5280. Reported by
213 yuemonangong in #3340. Reported independently and fixed by
214 Raoul Strackx and Jethro Beekman in #3433.
215 * In (D)TLS record decryption, when using a CBC ciphersuites without the
216 Encrypt-then-Mac extension, use constant code flow memory access patterns
217 to extract and check the MAC. This is an improvement to the existing
218 countermeasure against Lucky 13 attacks. The previous countermeasure was
219 effective against network-based attackers, but less so against local
220 attackers. The new countermeasure defends against local attackers, even
221 if they have access to fine-grained measurements. In particular, this
222 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
223 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
224 (University of Florida) and Dave Tian (Purdue University).
225 * Fix side channel in RSA private key operations and static (finite-field)
226 Diffie-Hellman. An adversary with precise enough timing and memory access
227 information (typically an untrusted operating system attacking a secure
228 enclave) could bypass an existing counter-measure (base blinding) and
229 potentially fully recover the private key.
230 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
231 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
232 for pinpointing the problematic code.
233 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
234 application data from memory. Reported in #689 by
235 Johan Uppman Bruce of Sectra.
236
237Bugfix
238 * Library files installed after a CMake build no longer have execute
239 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100240 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
241 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100242 Reported in #3451 and fix contributed in #3452 by okhowang.
243 * Fix the endianness of Curve25519 keys imported/exported through the PSA
244 APIs. psa_import_key and psa_export_key will now correctly expect/output
245 Montgomery keys in little-endian as defined by RFC7748. Contributed by
246 Steven Cooreman in #3425.
247 * Fix build errors when the only enabled elliptic curves are Montgomery
248 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
249 also fixes missing declarations reported by Steven Cooreman in #1147.
250 * Fix self-test failure when the only enabled short Weierstrass elliptic
251 curve is secp192k1. Fixes #2017.
252 * PSA key import will now correctly import a Curve25519/Curve448 public key
253 instead of erroring out. Contributed by Steven Cooreman in #3492.
254 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
255 lower bits. Fix contributed in #3540.
256 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
257 conditions. Reported and fix suggested by Guido Vranken in #3486.
258 * Fix bug in redirection of unit test outputs on platforms where stdout is
259 defined as a macro. First reported in #2311 and fix contributed in #3528.
260
261Changes
262 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
263 in #3478 and fix contributed in #3479 by okhowang.
264 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
265 previously could lead to stack overflow on constrained devices.
266 Contributed by Doru Gucea and Simon Leet in #3464.
267 * Undefine the ASSERT macro before defining it locally, in case it is defined
268 in a platform header. Contributed by Abdelatif Guettouche in #3557.
269 * Update copyright notices to use Linux Foundation guidance. As a result,
270 the copyright of contributors other than Arm is now acknowledged, and the
271 years of publishing are no longer tracked in the source files. This also
272 eliminates the need for the lines declaring the files to be part of
273 MbedTLS. Fixes #3457.
274 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
275 example applications which allows to provide a password for the key file
276 specified through the existing key_file argument. This allows the use of
277 these applications with password-protected key files. Analogously but for
278 ssl_server2 only, add the command line parameter key_pwd2 which allows to
279 set a password for the key file provided through the existing key_file2
280 argument.
281
Janos Follath13cba682020-06-26 12:40:52 +0100282= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +0100283
284Default behavior changes
285 * In the experimental PSA secure element interface, change the encoding of
286 key lifetimes to encode a persistence level and the location. Although C
287 prototypes do not effectively change, code calling
288 psa_register_se_driver() must be modified to pass the driver's location
289 instead of the keys' lifetime. If the library is upgraded on an existing
290 device, keys created with the old lifetime value will not be readable or
291 removable through Mbed TLS after the upgrade.
292
293Features
294 * New functions in the error module return constant strings for
295 high- and low-level error codes, complementing mbedtls_strerror()
296 which constructs a string for any error code, including compound
297 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
298 in #3176.
299 * The new utility programs/ssl/ssl_context_info prints a human-readable
300 dump of an SSL context saved with mbedtls_ssl_context_save().
301 * Add support for midipix, a POSIX layer for Microsoft Windows.
302 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
303 parsing unsupported certificate extensions via user provided callback.
304 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
305 a solution to #3241.
306 * Pass the "certificate policies" extension to the callback supplied to
307 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
308 policies (#3419).
309 * Added support to entropy_poll for the kern.arandom syscall supported on
310 some BSD systems. Contributed by Nia Alarie in #3423.
311 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
312
313Security
314 * Fix a side channel vulnerability in modular exponentiation that could
315 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
316 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
317 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
318 Strackx (Fortanix) in #3394.
319 * Fix side channel in mbedtls_ecp_check_pub_priv() and
320 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
321 private key that didn't include the uncompressed public key), as well as
322 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
323 f_rng argument. An attacker with access to precise enough timing and
324 memory access information (typically an untrusted operating system
325 attacking a secure enclave) could fully recover the ECC private key.
326 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
327 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
328 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
329 macros). This would cause the original Lucky 13 attack to be possible in
330 those configurations, allowing an active network attacker to recover
331 plaintext after repeated timing measurements under some conditions.
332 Reported and fix suggested by Luc Perneel in #3246.
333
334Bugfix
335 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
336 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
337 the example programs. Reported in #1430 and fix contributed by irwir.
338 * Fix undefined behavior in X.509 certificate parsing if the
339 pathLenConstraint basic constraint value is equal to INT_MAX.
340 The actual effect with almost every compiler is the intended
341 behavior, so this is unlikely to be exploitable anywhere. #3192
342 * Fix issue with a detected HW accelerated record error not being exposed
343 due to shadowed variable. Contributed by Sander Visser in #3310.
344 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
345 NULL pointer argument. Contributed by Sander Visser in #3312.
346 * Fix potential linker errors on dual world platforms by inlining
347 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
348 from psa_crypto.c. Fixes #3300.
349 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
350 #2855.
351 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
352 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
353 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
354 * Remove unused macros from MSVC projects. Reported in #3297 and fix
355 submitted in #3333 by irwir.
356 * Add additional bounds checks in ssl_write_client_hello() preventing
357 output buffer overflow if the configuration declared a buffer that was
358 too small.
359 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
360 fix submitted in #3421 by Nia Alarie.
361 * Fix building library/net_sockets.c and the ssl_mail_client program on
362 NetBSD. Contributed by Nia Alarie in #3422.
363 * Fix false positive uninitialised variable reported by cpp-check.
364 Contributed by Sander Visser in #3311.
365 * Update iv and len context pointers manually when reallocating buffers
366 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
367 when receiving a connection with CID, when these fields were shifted
368 in ssl_parse_record_header().
369
370Changes
371 * Fix warnings about signedness issues in format strings. The build is now
372 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
373 in #3153.
374 * Fix minor performance issue in operations on Curve25519 caused by using a
375 suboptimal modular reduction in one place. Found and fix contributed by
376 Aurelien Jarno in #3209.
377 * Combine identical cases in switch statements in md.c. Contributed
378 by irwir in #3208.
379 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
380 by irwir in #3150.
381 * Unify the example programs termination to call mbedtls_exit() instead of
382 using a return command. This has been done to enable customization of the
383 behavior in bare metal environments.
384 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
385 Contributed by Koh M. Nakagawa in #3326.
386 * Use FindPython3 when cmake version >= 3.15.0
387 * Abort the ClientHello writing function as soon as some extension doesn't
388 fit into the record buffer. Previously, such extensions were silently
389 dropped. As a consequence, the TLS handshake now fails when the output
390 buffer is not large enough to hold the ClientHello.
391 * The unit tests now rely on header files in tests/include/test and source
392 files in tests/src. When building with make or cmake, the files in
393 tests/src are compiled and the resulting object linked into each test
394 executable.
395 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
396 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
397 coutermeasures. If side channels are not a concern, this dependency can
398 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
399 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
400 Martinho. #3147
401 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
402 in #3182 and fix submitted by irwir. #3217
403 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
404
Janos Follath876e0252020-04-08 17:15:18 +0100405= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000406
407New deprecations
408 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
409 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400410 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
411 mbedtls_ssl_get_output_max_frag_len() and
412 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
413 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000414
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100415Security
416 * Fix issue in DTLS handling of new associations with the same parameters
417 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
418 the server could cause it to drop established associations with
419 legitimate clients, resulting in a Denial of Service. This could only
420 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
421 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +0100422 * Fix side channel in ECC code that allowed an adversary with access to
423 precise enough timing and memory access information (typically an
424 untrusted operating system attacking a secure enclave) to fully recover
425 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
426 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +0200427 * Fix a potentially remotely exploitable buffer overread in a
428 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100429
Janos Follathee856862020-04-08 16:58:36 +0100430Features
431 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
432 resizes the I/O buffers before and after handshakes, reducing the memory
433 consumption during application data transfer.
434
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100435Bugfix
436 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
437 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +0300438 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
439 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +0100440 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
441 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100442
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100443Changes
444 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
445 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400446 * Split mbedtls_ssl_get_max_frag_len() into
447 mbedtls_ssl_get_output_max_frag_len() and
448 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
449 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
450 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100451
Janos Follath138c2ea2020-02-19 14:32:24 +0000452= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +0000453
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000454New deprecations
455 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
456 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +0000457 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +0100458 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
459 library which allows TLS authentication to use keys stored in a
460 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000461
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100462Security
463 * Fix potential memory overread when performing an ECDSA signature
464 operation. The overread only happens with cryptographically low
465 probability (of the order of 2^-n where n is the bitsize of the curve)
466 unless the RNG is broken, and could result in information disclosure or
467 denial of service (application crash or extra resource consumption).
468 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100469 * To avoid a side channel vulnerability when parsing an RSA private key,
470 read all the CRT parameters from the DER structure rather than
471 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
472 Brumley. Reported and fix contributed by Jack Lloyd.
473 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100474
475Features
476 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
477 support without SHA-384.
478
479API changes
480 * Change the encoding of key types and curves in the PSA API. The new
481 values are aligned with the upcoming release of the PSA Crypto API
482 specification version 1.0.0. The main change which may break some
483 existing code is that elliptic curve key types no longer encode the
484 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
485 a curve family and the key size determines the exact curve (for example,
486 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
487
Jaeden Amero62236d72020-01-24 18:20:22 +0000488Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +0100489 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +0100490 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
491 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +0100492 * Fix some false-positive uninitialized variable warnings in X.509. Fix
493 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100494 * Fix a possible error code mangling in psa_mac_verify_finish() when
495 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +0000496 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
497 RSA keys that would later be rejected by functions expecting private
498 keys. Found by Catena cyber using oss-fuzz (issue 20467).
499 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
500 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +0000501
Jaeden Amerod56a2af2020-01-15 18:07:20 +0000502= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +0300503
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100504Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100505 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100506 entropy function to obtain entropy for a nonce if the entropy size is less
507 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100508 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100509 nonce length to 0.
510
511Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100512 * Enforce that mbedtls_entropy_func() gathers a total of
513 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100514 default configuration, on a platform with a single entropy source, the
515 entropy module formerly only grabbed 32 bytes, which is good enough for
516 security if the source is genuinely strong, but less than the expected 64
517 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +0100518 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
519 mbedtls_internal_aes_decrypt() before exiting the function. The value of
520 these variables can be used to recover the last round key. To follow best
521 practice and to limit the impact of buffer overread vulnerabilities (like
522 Heartbleed) we need to zeroize them before exiting the function.
523 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
524 Grant Hernandez, and Kevin Butler (University of Florida) and
525 Dave Tian (Purdue University).
526 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
527 constant time/constant trace, so side channel attacks can retrieve the
528 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
529 to have only large prime factors), and then, by brute force, recover the
530 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
531 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
532 timings on the comparison in the key generation enabled the attacker to
533 learn leading bits of the ephemeral key used during ECDSA signatures and to
534 recover the private key. Reported by Jeremy Dubeuf.
535 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
536 failures could happen with alternative implementations of AES. Bug
537 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
538 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100539
540Features
541 * Key derivation inputs in the PSA API can now either come from a key object
542 or from a buffer regardless of the step type.
543 * The CTR_DRBG module can grab a nonce from the entropy source during the
544 initial seeding. The default nonce length is chosen based on the key size
545 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100546 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100547 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100548 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100549
550API changes
551 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
552 key derivation function, use a buffer instead (this is now always
553 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100554 * Rename psa_asymmetric_sign() to psa_sign_hash() and
555 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100556
irwir6c0da642019-09-26 21:07:41 +0300557Bugfix
558 * Fix an incorrect size in a debugging message. Reported and fix
559 submitted by irwir. Fixes #2717.
560 * Fix an unused variable warning when compiling without DTLS.
561 Reported and fix submitted by irwir. Fixes #2800.
562 * Remove a useless assignment. Reported and fix submitted by irwir.
563 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100564 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +0100565 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100566 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100567 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100568 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100569 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100570 * mbedtls_ctr_drbg_set_entropy_len() and
571 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
572 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100573
574Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100575 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100576 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100577 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100578 before).
579 * Variables containing error codes are now initialized to an error code
580 rather than success, so that coding mistakes or memory corruption tends to
581 cause functions to return this error code rather than a success. There are
582 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +0100583 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100584 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100585 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100586 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +0100587 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100588 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100589 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +0300590
Jaeden Amero914a5072019-09-18 13:35:57 +0100591= mbed TLS 2.19.1 branch released 2019-09-16
592
593Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -0600594 * Declare include headers as PUBLIC to propagate to CMake project consumers
595 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +0100596 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
597 TLS sessions with tools like Wireshark.
598
599API Changes
600 * Make client_random and server_random const in
601 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
602 from modifying the client/server hello.
603
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200604Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +0100605 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200606 contributed by apple-ihack-geek in #2663.
607
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100608= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000609
Gilles Peskine52157832018-08-11 00:51:04 +0200610Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100611 * Fix a missing error detection in ECJPAKE. This could have caused a
612 predictable shared secret if a hardware accelerator failed and the other
613 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +0200614 * When writing a private EC key, use a constant size for the private
615 value, as specified in RFC 5915. Previously, the value was written
616 as an ASN.1 INTEGER, which caused the size of the key to leak
617 about 1 bit of information on average and could cause the value to be
618 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +0000619 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
620 implement blinding. Because of this for the same key and message the same
621 blinding value was generated. This reduced the effectiveness of the
622 countermeasure and leaked information about the private key through side
623 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +0200624
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000625Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200626 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +0200627 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200628 store it in non-volatile storage, and later using it for TLS session
629 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +0300630 * Add a new API function mbedtls_ssl_check_record() to allow checking that
631 an incoming record is valid, authentic and has not been seen before. This
632 feature can be used alongside Connection ID and SSL context serialisation.
633 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
634 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100635 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
636 (https://project-everest.github.io/). It can be enabled at compile time
637 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
638 verified and significantly faster, but is only supported on x86 platforms
639 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
640 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +0100641 * Add mbedtls_net_close(), enabling the building of forking servers where
642 the parent process closes the client socket and continue accepting, and
643 the child process closes the listening socket and handles the client
644 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000645
Gilles Peskine60b29d62019-08-14 18:37:59 +0200646API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +0200647 * Add DER-encoded test CRTs to library/certs.c, allowing
648 the example programs ssl_server2 and ssl_client2 to be run
649 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
650 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100651 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
652 list all curves for which at least one of ECDH or ECDSA is supported, not
653 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
654 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
655 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100656 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
657 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
658 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +0000659
660New deprecations
661 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
662 RNG function as an input.
663 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
664 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +0200665
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000666Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +0100667 * Fix missing bounds checks in X.509 parsing functions that could
668 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
669 * Fix multiple X.509 functions previously returning ASN.1 low-level error
670 codes to always wrap these codes into X.509 high level error codes before
671 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +0100672 * Fix to allow building test suites with any warning that detects unused
673 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +0100674 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +0100675 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +0100676 * Fix build failure when building with mingw on Windows by including
677 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +0100678 * Fix Visual Studio Release x64 build configuration by inheriting
679 PlatformToolset from the project configuration. Fixes #1430 reported by
680 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +0100681 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
682 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +0200683 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +0100684 * Avoid use of statically sized stack buffers for certificate writing.
685 This previously limited the maximum size of DER encoded certificates
686 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -0400687 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +0200688 * Update test certificates that were about to expire. Reported by
689 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +0200690 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
691 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
692 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +0100693 * Fix propagation of restart contexts in restartable EC operations.
694 This could previously lead to segmentation faults in builds using an
695 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +0100696 * Fix memory leak in in mpi_miller_rabin(). Contributed by
697 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -0600698 * Improve code clarity in x509_crt module, removing false-positive
699 uninitialized variable warnings on some recent toolchains (GCC8, etc).
700 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +0100701 * Fix bug in endianness conversion in bignum module. This lead to
702 functionally incorrect code on bigendian systems which don't have
703 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +0100704
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000705Changes
Hanno Becker136512b2019-05-30 11:16:02 +0100706 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +0200707 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
708 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +0100709 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -0600710 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
711 docker-env.sh) to simplify running test suites on a Linux host. Contributed
712 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +0100713 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
714 test runs without variability. Contributed by Philippe Antoine (Catena
715 cyber) in #2681.
716 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +0200717 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
718 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100719 * Remove the crypto part of the library from Mbed TLS. The crypto
720 code and tests are now only available via Mbed Crypto, which
721 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000722
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100723= mbed TLS 2.18.1 branch released 2019-07-12
724
Jaeden Ameroded319d2019-05-30 13:18:24 +0100725Bugfix
726 * Fix build failure when building with mingw on Windows by including
727 stdarg.h where needed. Fixes #2656.
728
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100729Changes
730 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
731 Ashley Duncan in #2609.
732
Jaeden Amerob1c72f52019-06-11 17:18:09 +0100733= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500734
Hanno Beckerac4172c2019-01-31 09:27:04 +0000735Features
736 * Add the Any Policy certificate policy oid, as defined in
737 rfc 5280 section 4.2.1.4.
738 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
739 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +0000740 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
741 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +0000742 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +0000743 Contributed by Jack Lloyd and Fortanix Inc.
744 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000745 and the used tls-prf.
746 * Add public API for tls-prf function, according to requested enum.
747 * Add support for parsing otherName entries in the Subject Alternative Name
748 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +0000749 as defined in RFC 4108 section 5.
750 * Add support for parsing certificate policies extension, as defined in
751 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
752 supported.
753 * List all SAN types in the subject_alt_names field of the certificate.
754 Resolves #459.
755 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +0000756 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
757 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +0000758 lifetime of the underlying transport by adding a connection identifier
759 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500760 incoming record with the correct connection data even after the peer has
761 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +0000762 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
763 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
764
Paul Bakker5121ce52009-01-03 21:22:43 +0000765
Jaeden Amero4e0db562019-08-27 11:18:28 +0100766API Changes
767 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
768 and the used tls-prf.
769 * Add public API for tls-prf function, according to requested enum.
770
Paul Bakker5121ce52009-01-03 21:22:43 +0000771Bugfix
772 * Fix private key DER output in the key_app_writer example. File contents
773 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
774 Christian Walther in #2239.
775 * Fix potential memory leak in X.509 self test. Found and fixed by
776 Junhwan Park, #2106.
777 * Reduce stack usage of hkdf tests. Fixes #2195.
778 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
779 used with negative inputs. Found by Guido Vranken in #2404. Credit to
780 OSS-Fuzz.
781 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
782 either used both encrypt and decrypt key schedules, or which perform padding.
783 GCM and CCM were not affected. Fixed by Jack Lloyd.
784 * Fix incorrect default port number in ssl_mail_client example's usage.
785 Found and fixed by irwir. #2337
786 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
787 Fixed by Peter Kolbus (Garmin). #2579
788 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +0000789 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
790 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500791 for the parameter.
792 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +0000793 sni entry parameter. Reported by inestlerode in #560.
794 * Set the next sequence of the subject_alt_name to NULL when deleting
795 sequence on failure. Found and fix suggested by Philippe Antoine.
796 Credit to OSS-Fuzz.
797
Paul Bakker5121ce52009-01-03 21:22:43 +0000798Changes
799 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
800 mbedTLS configuration only SHA-2 signed certificates are accepted.
801 This certificate is used in the demo server programs, which lead the
802 client programs to fail at the peer's certificate verification
803 due to an unacceptable hash signature. The certificate has been
804 updated to one that is SHA-256 signed. Fix contributed by
805 Illya Gerasymchuk.
806 * Return from various debugging routines immediately if the
807 provided SSL context is unset.
808 * Remove dead code from bignum.c in the default configuration.
809 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
810 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
811 Contributed by Peter Kolbus (Garmin).
812 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
813 improve clarity. Fixes #2258.
814
815= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +0000816
817Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500818 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
819 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000820 at the cost of additional lifetime constraints on the input
821 buffer, but at the benefit of reduced RAM consumption.
822 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
823 named bitstring in DER as required by RFC 5280 Appendix B.
824 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
825 from the default list (enabled by default). See
826 https://sweet32.info/SWEET32_CCS16.pdf.
827
828API Changes
829 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500830 See the Features section for more information.
831 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
832 for the benefit of saving RAM, by disabling the new compile-time
833 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
834 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
835 always return NULL, and removes the peer_cert field from the
836 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +0100837 certificate.
838
839Security
840 * Make mbedtls_ecdh_get_params return an error if the second key
841 belongs to a different group from the first. Before, if an application
842 passed keys that belonged to different group, the first key's data was
843 interpreted according to the second group, which could lead to either
844 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500845 latter case, this could expose at most 5 bits of the private key.
846
847Bugfix
848 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
849 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
850 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
851 Raised as a comment in #1996.
852 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
853 previously lead to a stack overflow on constrained targets.
854 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
855 in the header files, which missed the precompilation check. #971
856 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
857 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +0000858 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
859 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +0200860 * Fix signed-to-unsigned integer conversion warning
861 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -0600862 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
863 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +0100864 * Fix false failure in all.sh when backup files exist in include/mbedtls
865 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
866 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
867 mbedtls_asn1_write_bitstring().
868 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
869 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +0000870 correctly as trailing zeroes were not accounted for as unused bits in the
871 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +0000872
873Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500874 * Reduce RAM consumption during session renegotiation by not storing
875 the peer CRT chain and session ticket twice.
876 * Include configuration file in all header files that use configuration,
877 instead of relying on other header files that they include.
878 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -0500879 * Add support for alternative CSR headers, as used by Microsoft and defined
880 in RFC 7468. Found by Michael Ernst. Fixes #767.
881 * Correct many misspellings. Fixed by MisterDA #2371.
882 * Provide an abstraction of vsnprintf to allow alternative implementations
883 for platforms that don't provide it. Based on contributions by Joris Aerts
884 and Nathaniel Wesley Filardo.
885 * Fix clobber list in MIPS assembly for large integer multiplication.
886 Previously, this could lead to functionally incorrect assembly being
887 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +0100888 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
889 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +0100890 * Reduce the complexity of the timing tests. They were assuming more than the
891 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +0100892 * Fix configuration queries in ssl-opt.h. #2030
893 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +0000894 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
895 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500896 * Ciphersuites based on 3DES now have the lowest priority by default when
897 they are enabled.
898
899= mbed TLS 2.16.0 branch released 2018-12-21
900
901Features
902 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
903 of parameters in the API. This allows detection of obvious misuses of the
904 API, such as passing NULL pointers. The API of existing functions hasn't
905 changed, but requirements on parameters have been made more explicit in
906 the documentation. See the corresponding API documentation for each
907 function to see for which parameter values it is defined. This feature is
908 disabled by default. See its API documentation in config.h for additional
909 steps you have to take when enabling it.
910
911API Changes
912 * The following functions in the random generator modules have been
913 deprecated and replaced as shown below. The new functions change
914 the return type from void to int to allow returning error codes when
915 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
916 primitive. Fixes #1798.
917 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
918 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
919 * Extend ECDH interface to enable alternative implementations.
920 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
921 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
922 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
923 * Additional parameter validation checks have been added for the following
924 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
925 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
926 Where modules have had parameter validation added, existing parameter
927 checks may have changed. Some modules, such as Chacha20 had existing
928 parameter validation whereas other modules had little. This has now been
929 changed so that the same level of validation is present in all modules, and
930 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
931 is off. That means that checks which were previously present by default
932 will no longer be.
933
934New deprecations
935 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
936 in favor of functions that can return an error code.
937
938Bugfix
939 * Fix for Clang, which was reporting a warning for the bignum.c inline
940 assembly for AMD64 targets creating string literals greater than those
941 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
942 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
943 through qemu user emulation. Reported and fix suggested by randombit
944 in #1212. Fixes #1212.
945 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
946 This could lead to a buffer overflow, but only in case ticket authentication
947 was broken. Reported and fix suggested by Guido Vranken in #659.
948 * Add explicit integer to enumeration type casts to example program
949 programs/pkey/gen_key which previously led to compilation failure
950 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
951 * Fix double initialization of ECC hardware that made some accelerators
952 hang.
953 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -0500954 of check for certificate/key matching. Reported by Attila Molnar, #507.
955
956 = mbed TLS 2.15.1 branch released 2018-11-30
957
958 Changes
959 * Update the Mbed Crypto submodule to version 0.1.0b2.
960
961 = mbed TLS 2.15.0 branch released 2018-11-23
962
963 Features
964 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
965 Mbed Crypto as the source of the cryptography implementation.
966 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
967 the PSA Crypto API from Mbed Crypto when additionally used with the
968 USE_CRYPTO_SUBMODULE build option.
969
970 Changes
971 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500972 from the cipher abstraction layer. Fixes #2198.
973
974= mbed TLS 2.14.1 branch released 2018-11-30
975
976Security
977 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
978 decryption that could lead to a Bleichenbacher-style padding oracle
979 attack. In TLS, this affects servers that accept ciphersuites based on
980 RSA decryption (i.e. ciphersuites whose name contains RSA but not
981 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
982 (University of Adelaide), Daniel Genkin (University of Michigan),
983 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
984 (University of Adelaide, Data61). The attack is described in more detail
985 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
986 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
987 via branching and memory access patterns. An attacker who could submit
988 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
989 of the decryption and not its result could nonetheless decrypt RSA
990 plaintexts and forge RSA signatures. Other asymmetric algorithms may
991 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
992 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
993 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
994 modules.
995
996API Changes
997 * The new functions mbedtls_ctr_drbg_update_ret() and
998 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
999 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001000 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001001 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001002
Hanno Beckerd3445da2018-11-02 09:36:45 +00001003= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001004
Simon Butcherb35e59d2018-11-19 15:49:26 +00001005Security
Simon Butcher681edee2018-11-07 16:25:38 +00001006 * Fix overly strict DN comparison when looking for CRLs belonging to a
1007 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1008 name and the CA's subject name differed in their string encoding (e.g.,
1009 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001010 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001011 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001012 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001013 incoming message buffer was placed within the first 64KiB of address
1014 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001015 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1016 potentially leading to an application crash or information disclosure.
1017 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1018 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001019 adversary to construct non-primes that would be erroneously accepted as
1020 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001021 security of TLS, but can matter in other contexts with numbers chosen
1022 potentially by an adversary that should be prime and can be validated.
1023 For example, the number of rounds was enough to securely generate RSA key
1024 pairs or Diffie-Hellman parameters, but was insufficient to validate
1025 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001026 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001027 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001028
Simon Butcherb35e59d2018-11-19 15:49:26 +00001029Features
1030 * Add support for temporarily suspending expensive ECC computations after
1031 some configurable amount of operations. This is intended to be used in
1032 constrained, single-threaded systems where ECC is time consuming and can
1033 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001034 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1035 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1036 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1037 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001038 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1039 including client authentication).
1040 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1041 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001042 MPI multiplications used in ECC and RSA cryptography. Contributed by
1043 Aurelien Jarno.
1044 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1045 signature always used a salt with the same length as the hash, and returned
1046 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001047 shorter. This allows the library to support all hash and signature sizes
1048 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001049 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001050 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001051
1052API Changes
1053 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1054 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001055 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001056 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001057
1058New deprecations
1059 * All module specific errors following the form
1060 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001061 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001062 platform error.
1063 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001064 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1065 by the equivalent plaform error.
1066 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001067 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001068 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001069
1070Bugfix
1071 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1072 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001073 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1074 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001075 * Fix a bug in the update function for SSL ticket keys which previously
1076 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001077 * Fix failure in hmac_drbg in the benchmark sample application, when
1078 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1079 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001080 which lead to accepting properly authenticated but improperly
1081 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001082 * Fix memory leak and freeing without initialization in the example
1083 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001084 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1085 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1086 * Zeroize memory used for buffering or reassembling handshake messages
1087 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001088 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1089 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1090 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001091 UTF8String. Previously, the use of the PrintableString format led to
1092 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001093 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1094 Thomas-Dee.
1095 * Fix compilation failure for configurations which use compile time
1096 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001097 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1098 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001099
Simon Butcherc86993e2018-09-27 09:48:54 +01001100Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001101 * Removed support for Yotta as a build tool.
1102 * Add tests for session resumption in DTLS.
1103 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001104 test the handling of large packets and small packets on the client side
1105 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001106 * Change the dtls_client and dtls_server samples to work by default over
1107 IPv6 and optionally by a build option over IPv4.
1108 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001109 calls, rather than Win32 API calls directly. This is necessary to avoid
1110 conflict with C runtime usage. Found and fixed by irwir.
1111 * Remember the string format of X.509 DN attributes when replicating
1112 X.509 DNs. Previously, DN attributes were always written in their default
1113 string format (mostly PrintableString), which could lead to CRTs being
1114 created which used PrintableStrings in the issuer field even though the
1115 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1116 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001117 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1118 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001119 * Improve documentation of mbedtls_ssl_get_verify_result().
1120 Fixes #517 reported by github-monoculture.
1121 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001122 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001123 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001124
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001125= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001126
Hanno Becker921b76d2018-09-05 16:21:36 +01001127API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001128 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001129 whose implementation should behave as a thread-safe version of gmtime().
1130 This allows users to configure such an implementation at compile time when
1131 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001132 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001133 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001134
1135Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001136 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001137 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001138
k-stachowiak21feae52018-07-09 14:42:35 +02001139= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001140
1141Security
1142 * Fix an issue in the X.509 module which could lead to a buffer overread
1143 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001144 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001145 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001146
1147Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001148 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001149 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001150 with the peer, as well as by a new per-connection MTU option, set using
1151 mbedtls_ssl_set_mtu().
1152 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001153 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1154 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001155 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001156 enabled by default.
1157 * Add support for buffering out-of-order handshake messages in DTLS.
1158 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001159 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1160 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001161
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001162API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001163 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001164 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001165
1166Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001167 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1168 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001169 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1170 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001171 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001172 Fix contributed by Espressif Systems.
1173 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001174 This improves compliance to RFC 4492, and as a result, solves
1175 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001176 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001177 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001178 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1179 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1180 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1181 with TLS versions 1.1 and earlier when the server requested authentication
1182 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001183 check in parsing the CertificateRequest message,
1184 introduced in Mbed TLS 2.12.0. Fixes #1954.
1185 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001186 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1187 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001188 * Fix undefined shifts with negative values in certificates parsing
1189 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001190 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001191 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001192 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1193
1194Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001195 * Copy headers preserving timestamps when doing a "make install".
1196 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001197 * Allow the forward declaration of public structs. Contributed by Dawid
1198 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001199 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001200 CCM test vectors from RAM.
1201 * Add support for buffering of out-of-order handshake messages.
1202 * Add warnings to the documentation of the HKDF module to reduce the risk
1203 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001204 functions. Fixes #1775. Reported by Brian J. Murray.
1205
Gilles Peskine104d8582018-06-27 10:57:33 +02001206= mbed TLS 2.12.0 branch released 2018-07-25
1207
1208Security
1209 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1210 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1211 partially recover the plaintext of messages under some conditions by
1212 exploiting timing measurements. With DTLS, the attacker could perform
1213 this recovery by sending many messages in the same connection. With TLS
1214 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1215 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1216 sent over connections manipulated by the attacker. Connections using GCM
1217 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1218 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1219 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001220 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1221 Shamir.
1222 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001223 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001224 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001225 plaintext of messages under some conditions by using a cache attack
1226 targeting an internal MD/SHA buffer. With TLS or if
1227 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1228 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1229 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001230 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1231 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1232 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1233 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1234 execute code on the local machine as well as manipulate network packets,
1235 to partially recover the plaintext of messages under some conditions (see
1236 previous entry) by using a cache attack targeting the SSL input record
1237 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001238 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001239 Eyal Ronen and Adi Shamir.
1240
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001241Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001242 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001243 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001244 by Daniel King.
1245 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01001246 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
1247 Contributed by Augustin Cavalier.
1248 * Make the receive and transmit buffers independent sizes, for situations
1249 where the outgoing buffer can be fixed at a smaller size than the incoming
1250 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03001251 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001252 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001253 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01001254 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
1255
1256Bugfix
niisatob7d39db2018-06-25 20:44:57 +09001257 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09001258 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01001259 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001260 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01001261 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
1262 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01001263 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
1264 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01001265 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
1266 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03001267 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
1268 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001269 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
1270 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01001271 * Added length checks to some TLS parsing functions. Found and fixed by
1272 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03001273 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03001274 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01001275 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
1276 the `#include` in the header files. Resolves #857
1277 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01001278 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
1279 Drozd. #1098
1280 * Fix decryption for zero length messages (which contain all padding) when a
1281 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
1282 such a message was wrongly reported as an invalid record and therefore lead
1283 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01001284 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
1285 contributed by Espressif Systems. Fixes #1632
1286 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001287 when the request_size argument is set to 0 as stated in the documentation.
1288 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01001289 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01001290 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001291 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001292
1293Changes
1294 * Fail when receiving a TLS alert message with an invalid length, or invalid
1295 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
1296 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001297 when calling with a NULL salt and non-zero salt_len. Contributed by
1298 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00001299 * Change the shebang line in Perl scripts to look up perl in the PATH.
1300 Contributed by fbrosson.
1301 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001302 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001303 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
1304
1305= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01001306
1307Features
1308 * Add additional block mode, OFB (Output Feedback), to the AES module and
1309 cipher abstraction module.
1310 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01001311 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
1312 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02001313 * Add support for the XTS block cipher mode with AES (AES-XTS).
1314 Contributed by Aorimn in pull request #414.
1315 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01001316 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01001317 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01001318
1319Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01001320 * Fix the cert_write example to handle certificates signed with elliptic
1321 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01001322 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
1323 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01001324 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01001325 Reported by rahmanih in #683
1326 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
1327
Simon Butcherb6a5bff2018-06-18 11:51:36 +01001328Changes
1329 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
1330 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001331 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01001332 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001333
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01001334= mbed TLS 2.10.0 branch released 2018-06-06
1335
1336Features
1337 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02001338 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00001339
1340API Changes
1341 * Extend the platform module with a util component that contains
1342 functionality shared by multiple Mbed TLS modules. At this stage
1343 platform_util.h (and its associated platform_util.c) only contain
1344 mbedtls_platform_zeroize(), which is a critical function from a security
1345 point of view. mbedtls_platform_zeroize() needs to be regularly tested
1346 against compilers to ensure that calls to it are not removed from the
1347 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01001348 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01001349 facilitate testing and maintenance.
1350
1351Bugfix
1352 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001353 build to fail. Found by zv-io. Fixes #1651.
1354
Moran Pekera64fba42018-02-25 13:29:03 +02001355Changes
1356 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001357 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01001358 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02001359
Simon Butcherf85c90a2017-07-27 15:11:52 +01001360= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01001361
1362Security
1363 * Fix an issue in the X.509 module which could lead to a buffer overread
1364 during certificate validation. Additionally, the issue could also lead to
1365 unnecessary callback checks being made or to some validation checks to be
1366 omitted. The overread could be triggered remotely, while the other issues
1367 would require a non DER-compliant certificate to be correctly signed by a
1368 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
1369 luocm. Fixes #825.
1370 * Fix the buffer length assertion in the ssl_parse_certificate_request()
1371 function which led to an arbitrary overread of the message buffer. The
1372 overreads could be caused by receiving a malformed message at the point
1373 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04001374 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01001375 data is output with the debug data.
1376 * Fix a client-side bug in the validation of the server's ciphersuite choice
1377 which could potentially lead to the client accepting a ciphersuite it didn't
1378 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001379 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01001380 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01001381
1382Features
1383 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01001384 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
1385 Suggested and contributed by jkivilin in pull request #394.
1386 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001387 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01001388 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
1389 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01001390
1391API Changes
1392 * Extend the public API with the function of mbedtls_net_poll() to allow user
1393 applications to wait for a network context to become ready before reading
1394 or writing.
1395 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02001396 a check for whether more more data is pending to be processed in the
1397 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01001398 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00001399 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01001400
Gilles Peskine08185402018-03-22 21:50:48 +01001401Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01001402 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
1403 contributed by Brian J Murray and David Brown.
1404 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01001405 in configurations that omit certain hashes or public-key algorithms.
1406 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02001407 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01001408 #1353
1409 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
1410 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
1411 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08001412 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01001413 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07001414 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01001415 unable to parse keys which had only the optional parameters field of the
1416 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
1417 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02001418 stated in the mbedtls_cipher_update() documentation. Contributed by
1419 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01001420 * Fix overriding and ignoring return values when parsing and writing to
1421 a file in pk_sign program. Found by kevlut in #1142.
1422 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
1423 where data needs to be fetched from the underlying transport in order
1424 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01001425 returned when unexpected messages were being discarded, ignoring that
1426 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02001427 in the internal buffers; these cases led to deadlocks when event-driven
1428 I/O was used. Found and reported by Hubert Mis in #772.
1429 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04001430 function which leads to a potential one byte overread of the message
1431 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001432 * Fix invalid buffer sizes passed to zlib during record compression and
1433 decompression.
1434 * Fix the soversion of libmbedcrypto to match the soversion of the
1435 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01001436 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001437 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
1438
Simon Butcherb03120a2018-04-30 16:40:25 +01001439Changes
1440 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01001441 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
1442 independently by Matthieu Volat and Arne Schwabe.
1443 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00001444 public-key algorithms. Includes contributions by Gert van Dijk.
1445 * Improve negative testing of X.509 parsing.
1446 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01001447 configurations where the feature is disabled. Found and fixed by Gergely
1448 Budai.
1449 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
1450 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01001451 instead incorrectly manipulates the configuration structure directly.
1452 Found and fix submitted by junyeonLEE in #1220.
1453 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02001454 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
1455 without PBES2. Fixed by Marcos Del Sol Vives.
1456 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01001457 for Curve25519 (other curves had it already). Contributed by Nicholas
1458 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01001459 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
1460 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01001461 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001462 Paul Sokolovsky in #1356.
1463 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01001464 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001465 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01001466 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02001467 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02001468 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
1469 by Alexey Skalozub in #405.
1470 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02001471 transmitting more than the required length, return an error. Raised by
1472 Sam O'Connor in #1245.
1473 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01001474 HMAC functions with non-HMAC ciphersuites. Independently contributed
1475 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02001476 * Improve security of RSA key generation by including criteria from
1477 FIPS 186-4. Contributed by Jethro Beekman. #1380
1478 * Declare functions in header files even when an alternative implementation
1479 of the corresponding module is activated by defining the corresponding
1480 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04001481 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001482 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00001483 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01001484
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001485= mbed TLS 2.8.0 branch released 2018-03-16
1486
1487Default behavior changes
1488 * The truncated HMAC extension now conforms to RFC 6066. This means
1489 that when both sides of a TLS connection negotiate the truncated
1490 HMAC extension, Mbed TLS can now interoperate with other
1491 compliant implementations, but this breaks interoperability with
1492 prior versions of Mbed TLS. To restore the old behavior, enable
1493 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
1494 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00001495 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001496
1497Security
1498 * Fix implementation of the truncated HMAC extension. The previous
1499 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01001500 HMAC key of a single, uninterrupted connection (with no
1501 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001502 * Verify results of RSA private key operations to defend
1503 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001504 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
1505 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01001506 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
1507 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00001508 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001509 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
1510
1511Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01001512 * Extend PKCS#8 interface by introducing support for the entire SHA
1513 algorithms family when encrypting private keys using PKCS#5 v2.0.
1514 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01001515 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001516 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00001517 * Add support for public keys encoded in PKCS#1 format. #1122
1518
1519New deprecations
1520 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01001521 MBEDTLS_ZLIB_SUPPORT).
1522
1523Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01001524 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02001525 Fixes #1358.
1526 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01001527 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
1528 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00001529 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01001530 daniel in the Mbed TLS forum. #1351
1531 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
1532 * Fix setting version TLSv1 as minimal version, even if TLS 1
1533 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03001534 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
1535 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03001536 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01001537 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02001538 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01001539 * In test_suite_pk, pass valid parameters when testing for hash length
1540 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01001541 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01001542 by Guido Vranken. #639
1543 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001544 * Fix X509 CRT parsing that would potentially accept an invalid tag when
1545 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001546 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
1547 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01001548 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
1549 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01001550 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
1551 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01001552 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
1553 Found through fuzz testing.
1554
1555Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01001556 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01001557 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01001558 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
1559 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02001560 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01001561 a migration path for those depending on the library's ABI.
1562 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01001563 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001564 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001565
Gilles Peskine28a0c722017-10-17 19:01:38 +02001566= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00001567
1568Security
1569 * Fix a heap corruption issue in the implementation of the truncated HMAC
1570 extension. When the truncated HMAC extension is enabled and CBC is used,
1571 sending a malicious application packet could be used to selectively corrupt
1572 6 bytes on the peer's heap, which could potentially lead to crash or remote
1573 code execution. The issue could be triggered remotely from either side in
1574 both TLS and DTLS. CVE-2018-0488
1575 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
1576 for the key size, which could potentially lead to crash or remote code
1577 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
1578 Qualcomm Technologies Inc. CVE-2018-0487
1579 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
1580 zeros.
1581 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01001582 64 KiB to the address of the SSL buffer and causing a wrap around.
1583 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
1584 default enabled) maximum fragment length extension is disabled in the
1585 config and the application data buffer passed to mbedtls_ssl_write
1586 is larger than the internal message buffer (16384 bytes by default), the
1587 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00001588 application layer can be forced into sending such large packets. The issue
1589 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
1590 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
1591 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01001592 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01001593 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03001594 * Ensure that buffers are cleared after use if they contain sensitive data.
1595 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01001596 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
1597 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001598 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
1599 leaking 1 bit of the private key. Reported by prashantkspatil.
1600 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
1601 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01001602 sake of saving memory, but potentially leading to slight timing
1603 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001604 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01001605 after keypair generation.
1606 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01001607 (server-side). Could result in application crash, but only if an ALPN
1608 name larger than 16 bytes had been configured on the server.
1609 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02001610 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001611 manner.
1612
Gilles Peskinec82fbb42017-12-15 15:01:27 +01001613Features
1614 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02001615 * The selftest program can execute a subset of the tests based on command
1616 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01001617 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00001618 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01001619 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01001620 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03001621 * Add support for alternative implementations of GCM, selected by the
1622 configuration flag MBEDTLS_GCM_ALT.
1623 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03001624 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03001625 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03001626 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001627 with alternative implementation:
1628 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03001629 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03001630 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
1631 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
1632 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001633 with an alternative implementation:
1634 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00001635 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02001636 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00001637 * Add mechanism to provide alternative implementation of the DHM module.
1638
1639API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00001640 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00001641 independent setup and export of RSA contexts. Most notably,
1642 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
1643 up RSA contexts from partial key material and having them completed to the
1644 needs of the implementation automatically. This allows to setup private RSA
1645 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
1646 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01001647 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
1648 implementations of the RSA interface declared in rsa.h.
1649 * The following functions in the message digest modules (MD2, MD4, MD5,
1650 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
1651 The new functions change the return type from void to int to allow
1652 returning error codes when using MBEDTLS_<MODULE>_ALT.
1653 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01001654 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001655 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03001656 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
1657
Simon Butcher55fc4e02018-02-05 01:09:13 +00001658New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01001659 * Deprecate usage of RSA primitives with non-matching key-type
1660 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00001661 * Direct manipulation of structure fields of RSA contexts is deprecated.
1662 Users are advised to use the extended RSA API instead.
1663 * Deprecate usage of message digest functions that return void
1664 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
1665 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01001666 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
1667 that can return an error code.
1668 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
1669 parameters from RFC 3526 or the newly added parameters from RFC 7919.
1670 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001671 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
1672 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01001673 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001674 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001675 accepting DHM parameters in binary form, matching the new constants.
1676
1677Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01001678 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01001679 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01001680 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03001681 Found by projectgus and Jethro Beekman, #836.
1682 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
1683 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00001684 renegotiated handshakes would only accept signatures using SHA-1
1685 regardless of the peer's preferences, or fail if SHA-1 was disabled.
1686 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02001687 dates on leap years with 100 and 400 intervals are handled correctly. Found
1688 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01001689 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
1690 accepted. Generating these signatures required the private key.
1691 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01001692 Found independently by Florian in the mbed TLS forum and by Mishamax.
1693 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00001694 * Fix variable used before assignment compilation warnings with IAR
1695 toolchain. Found by gkerrien38.
1696 * Fix unchecked return codes from AES, DES and 3DES functions in
1697 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
1698 If a call to one of the functions of the cryptographic primitive modules
1699 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01001700 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
1701 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01001702 * Include configuration file in md.h, to fix compilation warnings.
1703 Reported by aaronmdjones in #1001
1704 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01001705 writing routines that prevented these functions to work with alternative
1706 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01001707 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00001708 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01001709 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00001710 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01001711 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001712 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00001713 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01001714 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01001715 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01001716 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
1717 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03001718 * Add size-checks for record and handshake message content, securing
1719 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01001720 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001721 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01001722 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
1723 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00001724 * Fix possible memory leaks in mbedtls_gcm_self_test().
1725 * Added missing return code checks in mbedtls_aes_self_test().
1726 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
1727 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01001728 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01001729 beforehand.
1730 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001731 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
1732 Found and fixed by Martijn de Milliano.
1733 * Fix an issue in the cipher decryption with the mode
1734 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01001735 Note, this padding mode is not used by the TLS protocol. Found and fixed by
1736 Micha Kraus.
1737 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
1738 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01001739 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
1740 mbedtls_sha512_init() is called before operating on the relevant context
1741 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00001742 reset it. Found independently by ccli8 on Github.
1743 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01001744 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
1745 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001746
Hanno Becker86e52302017-10-05 09:08:53 +01001747Changes
1748 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00001749 and the message digest. Further, allow enabling/disabling of authority
1750 identifier, subject identifier and basic constraints extensions.
1751 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
1752 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01001753 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01001754 on GitHub.
1755 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01001756 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
1757 undeclared dependency of the RSA module on the ASN.1 module.
1758 * Update all internal usage of deprecated message digest functions to the
1759 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00001760 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01001761 everywhere except some locations in the ssl_tls.c module.
1762 * Improve CTR_DRBG error handling by propagating underlying AES errors.
1763 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01001764 modules where the software implementation can be replaced by a hardware
1765 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001766 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01001767 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02001768
Simon Butcherb060cc22017-07-28 01:04:34 +01001769= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01001770
Simon Butcherf85c90a2017-07-27 15:11:52 +01001771Security
1772 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01001773 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
1774 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01001775 (default: 8) intermediates, even when it was not trusted. This could be
1776 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01001777 (the default), the handshake was correctly aborted).
1778 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01001779 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001780 Found by Laurent Simon.
1781
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01001782Features
1783 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01001784 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01001785 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01001786 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
1787 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001788 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02001789 cryptographic acceleration hardware.
1790
1791API Changes
1792 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01001793 API consistent with mbed TLS 2.5.0. Specifically removed the inline
1794 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01001795 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
1796 by James Cowgill. #978
1797 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01001798 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01001799 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01001800 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02001801 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02001802 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01001803
1804Bugfix
1805 * 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 +02001806 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01001807 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01001808 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
1809 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02001810 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01001811 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01001812 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
1813 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01001814 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01001815 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01001816 * Fix a potential integer overflow in the version verification for DER
1817 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00001818 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001819 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00001820 * Fix potential integer overflow in the version verification for DER
1821 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01001822 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001823 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01001824 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01001825 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01001826 constructed certificates to bypass the certificate verification check.
1827 * Fix a call to the libc function time() to call the platform abstraction
1828 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02001829 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01001830 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01001831
Simon Butcher3f2557e2017-08-01 18:06:12 +01001832Changes
1833 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01001834 64-bit division. This is useful on embedded platforms where 64-bit division
1835 created a dependency on external libraries. #708
1836 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01001837 accelerator code in the library leaves concurrency handling to the
1838 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01001839 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
1840 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01001841 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01001842 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01001843 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01001844
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001845= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01001846
1847Security
1848 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
1849 The issue could only happen client-side with renegotiation enabled.
1850 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02001851 (if the application layer sent data read from mbedtls_ssl_read()
1852 back to the server or to a third party). Can be triggered remotely.
1853 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02001854 certificate verification. SHA-1 can be turned back on with a compile-time
1855 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02001856 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
1857 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001858 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01001859 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001860
1861Bugfix
1862 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01001863 valid C and they prevented the test from compiling in Visual Studio 2015
1864 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001865 * Fix insufficient support for signature-hash-algorithm extension,
1866 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02001867 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01001868 when sending the alert failed. The fix makes sure not to hide the error
1869 that triggered the alert.
1870 * Fix SSLv3 renegotiation behaviour and stop processing data received from
1871 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01001872 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01001873 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001874 * Accept empty trusted CA chain in authentication mode
1875 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
1876 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
1877 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
1878 reflect bad EC curves within verification result.
1879 * Fix bug that caused the modular inversion function to accept the invalid
1880 modulus 1 and therefore to hang. Found by blaufish. #641.
1881 * Fix incorrect sign computation in modular exponentiation when the base is
1882 a negative MPI. Previously the result was always negative. Found by Guido
1883 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02001884 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02001885 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001886
1887Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00001888 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01001889 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00001890 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02001891 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01001892 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001893
Janos Follath45182a02017-03-23 10:41:56 +00001894= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01001895
Janos Follath5a1c0e72017-06-16 09:00:07 +01001896Security
1897 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00001898 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
1899 Simon.
1900 * Add exponent blinding to RSA private operations as a countermeasure
1901 against side-channel attacks like the cache attack described in
1902 https://arxiv.org/abs/1702.08719v2.
1903 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01001904 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001905
1906Features
1907 * Add hardware acceleration support for the Elliptic Curve Point module.
1908 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01001909 replacing the core functions and adding and alternative, module level
1910 replacement support for enabling the extension of the interface.
1911 * Add a new configuration option to 'mbedtls_ssl_config' to enable
1912 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00001913 behaviour has not changed, namely every configured CAs name is included.
1914
1915API Changes
1916 * The following functions in the AES module have been deprecated and replaced
1917 by the functions shown below. The new functions change the return type from
1918 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
1919 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
1920 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001921 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
1922
1923Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01001924 * Remove macros from compat-1.3.h that correspond to deleted items from most
1925 recent versions of the library. Found by Kyle Keen.
1926 * Fixed issue in the Threading module that prevented mutexes from
1927 initialising. Found by sznaider. #667 #843
1928 * Add checks in the PK module for the RSA functions on 64-bit systems.
1929 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001930 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00001931 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01001932
Janos Follath182013f2016-10-25 10:50:22 +01001933= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00001934
1935Security
1936 * Add checks to prevent signature forgeries for very large messages while
1937 using RSA through the PK module in 64-bit systems. The issue was caused by
1938 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00001939 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
1940 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
1941 * Fixed potential livelock during the parsing of a CRL in PEM format in
1942 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
1943 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01001944 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
1945 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00001946 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00001947 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
1948 Introduced by interoperability fix for #513.
1949 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00001950 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00001951 triggered remotely for example with a maliciously constructed certificate
1952 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00001953 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01001954 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00001955
1956Bugfix
1957 * Fix output certificate verification flags set by x509_crt_verify_top() when
1958 traversing a chain of trusted CA. The issue would cause both flags,
1959 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00001960 set when the verification conditions are not met regardless of the cause.
1961 Found by Harm Verhagen and inestlerode. #665 #561
1962 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00001963 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
1964 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00001965 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00001966 x509_csr.c that are reported when building mbed TLS with a config.h that
1967 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
1968 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
1969 would compare 64 bits of the record counter instead of 48 bits as indicated
1970 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01001971 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01001972 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01001973 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00001974 the input string in PEM format to extract the different components. Found
1975 by Eyal Itkin.
1976 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
1977 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1978 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
1979 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00001980 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
1981 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00001982 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
1983 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00001984 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
1985 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00001986 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
1987 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00001988 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
1989 fix proposed by Guido Vranken. #722
1990 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02001991 Studio 2015 as well as the files themselves, to remove a build warning
1992 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00001993 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
1994 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
1995 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00001996 number to write in hexadecimal is negative and requires an odd number of
1997 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01001998 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00001999 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00002000
2001= mbed TLS 2.4.1 branch released 2016-12-13
2002
2003Changes
2004 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2005 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01002006 Authentication October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03002007
Andres AG60dbc932016-09-02 15:23:48 +01002008= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01002009
2010Security
2011 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2012 with RFC-5116 and could lead to session key recovery in very long TLS
2013 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2014 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01002015 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01002016 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01002017 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01002018 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03002019 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01002020
2021Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03002022 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2023 NIST SP 800-38B, RFC-4493 and RFC-4615.
2024 * Added hardware entropy selftest to verify that the hardware entropy source
2025 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01002026 * Added a script to print build environment info for diagnostic use in test
2027 scripts, which is also now called by all.sh.
2028 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01002029 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01002030 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01002031 * Added a configuration file config-no-entropy.h that configures the subset of
2032 library features that do not require an entropy source.
2033 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03002034 to configure the minimum number of bytes for entropy sources using the
2035 mbedtls_hardware_poll() function.
2036
2037Bugfix
2038 * Fix for platform time abstraction to avoid dependency issues where a build
2039 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01002040 configuration consistency checks to check_config.h
2041 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03002042 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2043 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03002044 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2045 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01002046 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01002047 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01002048 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01002049 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01002050 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01002051 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01002052 * Fixed pthread implementation to avoid unintended double initialisations
2053 and double frees. Found by Niklas Amnebratt.
2054 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01002055 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2056 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01002057 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01002058 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002059 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002060 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01002061 mbedtls_gcm_finish(). Found by cmiatpaar. #602
2062 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01002063 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002064 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01002065 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
2066 Found by subramanyam-c. #626
2067 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01002068 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03002069 certificate. Found by teumas. #513
2070 * Fix compilation without MBEDTLS_SELF_TEST enabled.
2071
2072Changes
2073 * Extended test coverage of special cases, and added new timing test suite.
2074 * Removed self-tests from the basic-built-test.sh script, and added all
2075 missing self-tests to the test suites, to ensure self-tests are only
2076 executed once.
2077 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01002078 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01002079 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01002080 * Added optimization for code space for X.509/OID based on configured
2081 features. Contributed by Aviv Palivoda.
2082 * Renamed source file library/net.c to library/net_sockets.c to avoid
2083 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01002084 net.c. For consistency, the corresponding header file, net.h, is marked as
2085 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002086 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01002087 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002088
Janos Follathcc4eba72016-02-10 16:25:55 +00002089= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00002090
Janos Follath3218b212016-02-10 16:14:10 +00002091Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002092 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
2093 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002094 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01002095 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00002096 (not triggerable remotely in (D)TLS).
2097 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00002098 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002099 SSL/TLS.
2100
2101Features
2102 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002103 function.
2104
2105Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002106 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002107 arguments where the same (in-place doubling). Found and fixed by Janos
2108 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002109 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01002110 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00002111 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00002112 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
2113 ECDSA was disabled in config.h . The leak didn't occur by default.
2114 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01002115 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00002116 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002117 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00002118 buffer after DER certificates to be included in the raw representation.
2119 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01002120 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2121 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01002122 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002123 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01002124 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01002125 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002126 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002127 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
2128
2129Changes
2130 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002131 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01002132 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
2133 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01002134 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2135 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002136 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2137 ignored, as required by RFC6101.
2138
2139= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002140
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002141Security
Simon Butcher00923c12015-12-22 19:04:24 +00002142 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002143 allocate memory. Only used for certificate generation, not triggerable
2144 remotely in SSL/TLS. Found by Rafał Przywara. #367
2145 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002146 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00002147 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002148 https://www.mitls.org/pages/attacks/SLOTH
2149
2150Bugfix
2151 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2152 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00002153 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002154 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01002155 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002156 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002157 * Fix suboptimal handling of unexpected records that caused interop issues
2158 with some peers over unreliable links. Avoid dropping an entire DTLS
2159 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002160 drop the record and look at subsequent records (if any are present) in
2161 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00002162
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002163= mbed TLS 2.2.0 released 2015-11-04
2164
2165Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00002166 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002167 once and some allocation fails. Cannot be forced remotely. Found by Guido
2168 Vranken, Intelworks.
2169 * Fix potential heap corruption on Windows when
2170 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002171 triggered remotely. Found by Guido Vranken, Intelworks.
2172 * Fix potential buffer overflow in some asn1_write_xxx() functions.
2173 Cannot be triggered remotely unless you create X.509 certificates based
2174 on untrusted input or write keys of untrusted origin. Found by Guido
2175 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002176 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002177 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002178 Janos Follath. #280 and #319
2179
2180Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002181 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2182 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002183 * Added a key extraction callback to accees the master secret and key
2184 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00002185
2186Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002187 * Self-signed certificates were not excluded from pathlen counting,
2188 resulting in some valid X.509 being incorrectly rejected. Found and fix
2189 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002190 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002191 exchange. Found and fix provided by Chris Hammond. #270
2192 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002193 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002194 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
2195 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
2196 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002197 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002198 minimum key size for end-entity certificates with RSA keys. Found by
2199 Matthew Page of Scannex Electronics Ltd.
2200 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002201 Found by Kurt Danielson. #292
2202 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
2203 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01002204 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002205 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002206
2207Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002208 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2209 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002210
2211= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002212
2213Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01002214 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002215 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002216 Intelworks.
2217 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
2218 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2219 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01002220 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002221 * Fix stack buffer overflow in pkcs12 decryption (used by
2222 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
2223 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2224 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2225 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2226 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002227 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01002228 require reading a string of close to or larger than 2^62 bytes.
2229 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002230 on crafted PEM input data. Found and fix provided by Guido Vranken,
2231 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
2232 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01002233 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01002234 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002235 Intelworks. Not trigerrable remotely in TLS.
2236 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
2237 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01002238 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002239 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01002240 authentication against a crafted CA cert. Cannot be triggered remotely
2241 unless you allow third parties to pick trust CAs for client auth.
2242 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01002243
2244Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01002245 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01002246 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002247 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002248
2249Changes
2250 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
2251 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002252 * Fixed paths for check_config.h in example config files. (Found by bachp)
2253 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002254
2255= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002256
Simon Butchera1a11282015-09-14 21:30:40 +01002257Security
2258 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02002259 signatures. (Found by Florian Weimer, Red Hat.)
2260 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
2261 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01002262 tries to continue the handshake after it failed (a misuse of the API).
2263 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
2264 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02002265
2266Bugfix
2267 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
2268 * Fix off-by-one error in parsing Supported Point Format extension that
2269 caused some handshakes to fail.
2270
2271Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01002272 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002273 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002274 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002275 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02002276 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
2277 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002278 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002279 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
2280 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02002281
2282= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02002283
2284Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002285 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02002286 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002287
2288Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02002289 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02002290 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
2291 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02002292 * Fix bug when parsing a ServerHello without extensions (found by David
2293 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02002294 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
2295 (found by Benoit Lecocq).
2296 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02002297 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02002298 * Fix compile error with armcc 5 with --gnu option.
2299 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02002300 (found by robotanarchy) (#232).
2301 * Fix bug in Makefile that prevented from installing without building the
2302 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01002303 * Fix missing -static-libgcc when building shared libraries for Windows
2304 with make.
2305 * Fix link error when building shared libraries for Windows with make.
2306 * Fix error when loading libmbedtls.so.
2307 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
2308 be always used (found by dcb314) (#235)
2309 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002310 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02002311 Fredrik Axelsson) (#257)
2312 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002313 * Fix memory corruption on client with overlong PSK identity, around
2314 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
2315 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02002316 * Fix unused function warning when using MBEDTLS_MDx_ALT or
2317 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
2318 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01002319
2320Changes
2321 * The PEM parser now accepts a trailing space at end of lines (#226).
2322 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002323 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01002324 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01002325 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002326 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002327 (#220).
2328 * Prepend a "thread identifier" to debug messages (issue pointed out by
2329 Hugo Leisink) (#210).
2330 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
2331 length.
2332
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002333= mbed TLS 2.0.0 released 2015-07-13
2334
2335Features
2336 * Support for DTLS 1.0 and 1.2 (RFC 6347).
2337 * Ability to override core functions from MDx, SHAx, AES and DES modules
2338 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02002339 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002340 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02002341 preserve forward secrecy, and allows sharing across multiple contexts.
2342 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002343 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002344 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002345 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002346 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02002347 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02002348
2349API Changes
2350 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002351 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002352 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002353 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02002354 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002355 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002356 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002357 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02002358 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002359 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02002360 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002361 * The following _init() functions that could return errors have
2362 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002363 should generally be the first function called on this context after init:
2364 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002365 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002366 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02002367 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002368 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
2369 Note that for mbedtls_ssl_setup(), you need to be done setting up the
2370 ssl_config structure before calling it.
2371 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002372 ssl_set_session() and ssl_set_client_transport_id(), plus
2373 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002374 (see rename.pl and compat-1.3.h above) and their first argument's type
2375 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002376 * ssl_set_bio() changed signature (contexts merged, order switched, one
2377 additional callback for read-with-timeout).
2378 * The following functions have been introduced and must be used in callback
2379 implementations (SNI, PSK) instead of their *conf counterparts:
2380 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002381 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01002382 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002383 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01002384 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002385 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
2386 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02002387 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
2388 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002389 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002390 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002391 * mbedtls_ssl_conf_truncated_hmac() now returns void.
2392 * mbedtls_memory_buffer_alloc_init() now returns void.
2393 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002394 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002395 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01002396 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
2397 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
2398 * The following functions changed prototype to avoid an in-out length
2399 parameter:
2400 mbedtls_base64_encode()
2401 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02002402 mbedtls_mpi_write_string()
2403 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02002404 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02002405 changed type to "mbedtls_net_context *".
2406 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002407 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02002408 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02002409 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02002410 ecdsa_write_signature_det() was deprecated.
2411 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01002412 * Last argument of x509_crt_check_key_usage() and
2413 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
2414 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01002415 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02002416 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
2417 strings; use the new *_len variables instead of strlen().
2418 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00002419 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02002420 length parameter to include the terminating null byte for PEM input.
2421 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02002422 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002423 layer and the memory_buffer_alloc module changed accordingly.
2424 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02002425 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
2426 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002427 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
2428 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02002429 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002430 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
2431 Their 'port' argument type is changed to a string.
2432 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002433
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02002434Removals
2435 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02002436 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
2437 mbedtls_ecp_muladd().
2438 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02002439 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02002440 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002441 waiting function.
2442 * Removed test DHM parameters from the test certs module.
2443 * Removed the PBKDF2 module (use PKCS5).
2444 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
2445 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
2446 * Removed openssl.h (very partial OpenSSL compatibility layer).
2447 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
2448 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
2449 been removed (compiler is required to support 32-bit operations).
2450 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
2451 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002452 * Removed test program ssl_test, superseded by ssl-opt.sh.
2453 * Removed helper script active-config.pl
2454
2455New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002456 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002457 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002458
2459Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02002460 * Renamed a few headers to include _internal in the name. Those headers are
2461 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002462 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
2463 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01002464 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002465 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
2466 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002467 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002468 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02002469
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002470Default behavior changes
2471 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002472 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
2473 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01002474 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02002475 compile time.
2476 * The default authmode for SSL/TLS clients is now REQUIRED.
2477 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01002478 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002479 custom config.h
2480 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01002481 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02002482 chain verification.
2483 * Negotiation of truncated HMAC is now disabled by default on server too.
2484 * The following functions are now case-sensitive:
2485 mbedtls_cipher_info_from_string()
2486 mbedtls_ecp_curve_info_from_name()
2487 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002488 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002489 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02002490
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02002491Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01002492 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002493 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002494 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002495
2496API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002497 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
2498 new prototype, and mbedtls_ssl_set_read_timeout().
2499 * The following functions now return void:
2500 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02002501 mbedtls_ssl_conf_max_version()
2502 mbedtls_ssl_conf_min_version()
2503 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
2504 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02002505 an example implementation, see mbedtls_timing_delay_context and
2506 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002507 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002508 after a successful net_accept().
2509
2510Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002511 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
2512 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002513 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002514 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
2515
2516= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02002517
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01002518Security
2519 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02002520 extendedKeyUsage on the leaf certificate was lost (results not accessible
2521 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002522 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2523 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02002524
2525Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02002526 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02002527 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02002528 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01002529 * Add support for reading DH parameters with privateValueLength included
2530 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002531 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
2532 * Add support for id-at-uniqueIdentifier in X.509 names.
2533 * Add support for overriding snprintf() (except on Windows) and exit() in
2534 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00002535 * Add an option to use macros instead of function pointers in the platform
2536 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00002537 * Improved Makefiles for Windows targets by fixing library targets and making
2538 cross-compilation easier (thanks to Alon Bar-Lev).
2539 * The benchmark program also prints heap usage for public-key primitives
2540 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
2541 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
2542 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002543 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002544 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002545 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002546 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002547 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
2548 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01002549
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01002550Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01002551 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
2552 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02002553 * Fix bug in entropy.c when THREADING_C is also enabled that caused
2554 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02002555 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
2556 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02002557 * Fix bug in ssl_mail_client when password is longer that username (found
2558 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02002559 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
2560 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02002561 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
2562 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02002563 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02002564 doing it at runtime (using uname) rather that compile time.
2565 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
2566 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02002567 ssl_write() is called before the handshake is finished (introduced in
2568 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01002569 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01002570 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00002571 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
2572 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00002573 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00002574 versions of mingw64 (found by kxjhlele).
2575 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00002576 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00002577 platforms.
2578 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
2579 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00002580 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02002581 in 1.3.10).
2582 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02002583 * Add missing dependency on SHA-256 in some x509 programs (reported by
2584 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002585 * Fix bug related to ssl_set_curves(): the client didn't check that the
2586 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02002587
2588Changes
2589 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02002590 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02002591 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002592 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002593 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00002594 * compat-1.2.h and openssl.h are deprecated.
2595 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002596 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00002597 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00002598 * ssl_set_own_cert() no longer calls pk_check_pair() since the
2599 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00002600 * Move from SHA-1 to SHA-256 in example programs using signatures
2601 (suggested by Thorsten Mühlfelder).
2602 * Remove some unneeded inclusions of header files from the standard library
2603 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002604 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02002605 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01002606 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002607
2608= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00002609Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002610 * NULL pointer dereference in the buffer-based allocator when the buffer is
2611 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002612 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002613 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002614 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002615 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002616 client certificate) (found using Codenomicon Defensics).
2617 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
2618 (TLS server is not affected if it doesn't ask for a client certificate)
2619 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002620 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00002621 (TLS server is not affected if it doesn't ask for a client certificate)
2622 (found using Codenomicon Defensics).
2623 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002624 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002625 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002626
2627Features
2628 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002629 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01002630 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01002631 * Add function pk_check_pair() to test if public and private keys match.
2632 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01002633 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01002634 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02002635 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01002636 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01002637 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
2638 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002639 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01002640 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00002641 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
2642 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002643 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002644 ciphersuite/certificate.
2645
2646Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01002647 * Stack buffer overflow if ctr_drbg_update() is called with too large
2648 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002649 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
2650 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002651 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01002652 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01002653 by Julian Ospald).
2654 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00002655 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
2656 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00002657 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00002658 Peter Vaskovic).
2659 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00002660 * ssl_get_verify_result() now works even if the handshake was aborted due
2661 to a failed verification (found by Fredrik Axelsson).
2662 * Skip writing and parsing signature_algorithm extension if none of the
2663 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00002664 issue with some servers when a zero-length extension was sent. (Reported
2665 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002666 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01002667 (found by Hendrik van den Boogaard).
2668
2669Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01002670 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002671 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01002672 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01002673 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01002674 * Forbid repeated extensions in X.509 certificates.
2675 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01002676 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002677 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01002678 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01002679 * It is now possible to disable negotiation of truncated HMAC server-side
2680 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00002681 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002682 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02002683 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002684
2685= PolarSSL 1.3.9 released 2014-10-20
2686Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002687 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02002688 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
2689 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02002690 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02002691 (found using Codenomicon Defensics).
2692 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002693 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002694 Defensics).
2695
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02002696Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02002697 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02002698 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02002699 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02002700 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
2701 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02002702 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002703 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
2704 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02002705 * ssl_read() could return non-application data records on server while
2706 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02002707 * Server-initiated renegotiation would fail with non-blocking I/O if the
2708 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02002709 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02002710 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02002711 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02002712 * x509_crt_parse() did not increase total_failed on PEM error
2713 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002714 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002715 Vialletelle).
2716
2717Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02002718 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
2719 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02002720 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
2721 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002722 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
2723 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02002724 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2725 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02002726 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002727 RSA keys.
2728 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002729 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02002730 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02002731
2732= PolarSSL 1.3.8 released 2014-07-11
2733Security
2734 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2735 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02002736 when a GCM suite was chosen.
2737
2738Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02002739 * Add CCM module and cipher mode to Cipher Layer
2740 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02002741 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02002742 modules (certificates, CRLs and CSRs).
2743 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02002744 * Add example config.h for PSK with CCM, optimized for low RAM usage.
2745 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02002746 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
2747 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02002748 * Add server-side enforcement of sent renegotiation requests
2749 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02002750 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02002751 ciphersuites to use and save some memory if the list is small.
2752
2753Changes
Paul Bakker34617722014-06-13 17:20:13 +02002754 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
2755 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02002756 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02002757 against unwanted compiler optimizations
2758 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02002759 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
2760 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02002761 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02002762 usage pattern
2763
Paul Bakker1ebc0c52014-05-22 15:47:58 +02002764Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02002765 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02002766 * Enforce alignment in the buffer allocator even if buffer is not aligned
2767 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02002768 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2769 size (found by TrustInSoft)
2770 * Fix WSAStartup() return value check (found by Peter Vaskovic)
2771 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02002772 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002773 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02002774 * Fix DER output of gen_key app (found by Gergely Budai)
2775 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002776 use with some ciphersuites and versions (RC4 in all versions, CBC with
2777 versions < TLS 1.1).
2778 * Very large records using more than 224 bytes of padding were incorrectly
2779 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02002780 * Very large records using less padding could cause a buffer overread of up
2781 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02002782 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
2783 been removed in 1.3.6.)
2784 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07002785 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02002786 1.3.6.)
2787 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02002788 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2789 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02002790 * Fix off-by-one error in parsing Supported Point Format extension that
2791 caused some handshakes to fail.
2792 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02002793 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02002794 (Failure rate <= 1/255 with common DHM moduli.)
2795 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02002796 * Fix base64_decode() to return and check length correctly (in case of
2797 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02002798 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02002799 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02002800
Paul Bakkerc73079a2014-04-25 16:34:30 +02002801= PolarSSL 1.3.7 released on 2014-05-02
2802Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02002803 * debug_set_log_mode() added to determine raw or full logging
2804 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02002805 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02002806 run-time
2807
2808Changes
Paul Bakker92478c32014-04-25 15:18:34 +02002809 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02002810 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02002811 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02002812 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02002813 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02002814 * Ciphersuites based on RC4 now have the lowest priority by default
2815
2816Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02002817 * Only iterate over actual certificates in ssl_write_certificate_request()
2818 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02002819 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02002820 Karger)
2821 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02002822 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
2823 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02002824 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02002825 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02002826 * rsa_check_pubkey() now allows an E up to N
2827 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02002828 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02002829 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00002830 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07002831 * Some parts of ssl_tls.c were compiled even when the module was disabled.
2832 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02002833 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02002834 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002835
Paul Bakker27e36d32014-04-08 12:33:37 +02002836= PolarSSL 1.3.6 released on 2014-04-11
2837
Paul Bakker1cfc4582014-04-09 15:25:13 +02002838Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002839 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02002840 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002841 * Enable verification of the keyUsage extension for CA and leaf
2842 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02002843 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02002844 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
2845
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02002846Changes
2847 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02002848 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02002849 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02002850 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002851 * Reject certificates with times not in UTC, per RFC 5280.
2852
2853Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02002854 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
2855 (Found by Watson Ladd.)
2856 * The notAfter date of some certificates was no longer checked since 1.3.5.
2857 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02002858 certificate. If the user-supplied chain contains only one certificates,
2859 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002860 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002861 TrustInSoft)
2862
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01002863Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02002864 * The length of various ClientKeyExchange messages was not properly checked.
2865 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02002866 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02002867 calculation of RR.
2868 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02002869 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
2870 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07002871 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
2872 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01002873 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
2874 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01002875 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02002876 error if the output buffer was just 1 byte too small.
2877 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02002878 * Calling pk_debug() on an RSA-alt key would segfault.
2879 * 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 +02002880 * Potential buffer overwrite in pem_write_buffer() because of low length
2881 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002882 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01002883 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01002884
2885= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002886Features
Paul Bakker6a28e722014-02-06 13:41:55 +01002887 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01002888 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01002889 * Single Platform compatilibity layer (for memory / printf / fprintf)
2890 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01002891 * Ability to force the entropy module to use SHA-256 as its basis
2892 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01002893 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01002894 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01002895 * Support for reading EC keys that use SpecifiedECDomain in some cases.
2896 * Entropy module now supports seed writing and reading
2897
Paul Bakker47703a02014-02-06 15:01:20 +01002898Changes
2899 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01002900 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01002901 now thread-safe if POLARSSL_THREADING_C defined
2902 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01002903 * Work around a bug of the version of Clang shipped by Apple with Mavericks
2904 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002905 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01002906 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01002907 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002908 * Improvements to tests/Makefile, contributed by Oden Eriksson.
2909
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01002910Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002911 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01002912 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01002913 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002914 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01002915 * Forbid sequence number wrapping
2916 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002917 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01002918 TrustInSoft)
2919
2920Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002921 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01002922 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01002923 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01002924 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01002925 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01002926 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10002927 * Fixed dependency issues in test suite
2928 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002929 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
2930 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01002931 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002932 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002933 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002934 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01002935 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002936 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01002937 * ssl_srv was leaking memory when client presented a timed out ticket
2938 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01002939 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
2940 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01002941 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01002942 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01002943 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01002944 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01002945
Paul Bakker0ac99ca2014-01-22 13:08:44 +01002946= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01002947Features
Paul Bakker556efba2014-01-24 15:38:12 +01002948 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01002949 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01002950 * Support for AES CFB8 mode
2951 * Support for deterministic ECDSA (RFC 6979)
2952
2953Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01002954 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01002955 * Replaced expired test certificate
2956 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01002957 * net module handles timeouts on blocking sockets better (found by Tilman
2958 Sauerbeck)
2959 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01002960
2961Security
Paul Bakker3eb96732014-01-22 13:08:19 +01002962 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01002963 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01002964
2965= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01002966Features
2967 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01002968 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01002969 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01002970 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01002971 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01002972 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01002973 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01002974 * SSL Pthread-based server example added (ssl_pthread_server)
2975
2976Changes
2977 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01002978 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01002979 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01002980 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01002981 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01002982 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01002983 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01002984 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002985 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01002986
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002987Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01002988 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01002989 * Fixed X.509 hostname comparison (with non-regular characters)
2990 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01002991 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01002992 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01002993 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01002994 * Memory leak in benchmark application
2995 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01002996 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
2997 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002998 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01002999 ssl_write_certificate() (found by TrustInSoft)
3000
3001Security
3002 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003003 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01003004
3005= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01003006Features
Paul Bakker16421222013-10-28 14:37:09 +01003007 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01003008 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01003009 * Support for Camellia-GCM mode and ciphersuites
3010
Paul Bakkere1121b62013-10-31 14:37:37 +01003011Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01003012 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003013 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01003014 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01003015 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01003016
Paul Bakker677377f2013-10-28 12:54:26 +01003017Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003018 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01003019 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01003020 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01003021 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003022 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003023 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01003024 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01003025 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003026 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02003027
3028= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02003029Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02003030 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02003031 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02003032 * Support for RSA-PSK key-exchange and ciphersuites
3033
Paul Bakker16770332013-10-11 09:59:44 +02003034Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02003035 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003036 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02003037 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3038 * config.h is more script-friendly
3039
3040Bugfix
3041 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02003042 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003043 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02003044 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02003045 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02003046 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02003047 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003048 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01003049
3050= PolarSSL 1.3.0 released on 2013-10-01
3051Features
3052 * Elliptic Curve Cryptography module added
3053 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02003054 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3055 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003056 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003057 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02003058 * Ability to specify allowed ciphersuites based on the protocol version.
3059 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02003060 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02003061 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02003062 * Threading abstraction layer added (dummy / pthread / alternate)
3063 * Public Key abstraction layer added
3064 * Parsing Elliptic Curve keys
3065 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003066 * Support for max_fragment_length extension (RFC 6066)
3067 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02003068 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02003069 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
3070 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003071 * Certificate Request (CSR) generation with extensions (key_usage,
3072 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003073 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02003074 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00003075 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01003076 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01003077 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003078
3079Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003080 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3081 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01003082 * Introduced separate SSL Ciphersuites module that is based on
3083 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02003084 * Internals for SSL module adapted to have separate IV pointer that is
3085 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003086 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02003087 prototypes for the RSA sign and verify functions changed as a result
3088 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02003089 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003090 and maximum protocol version
3091 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02003092 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02003093 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02003094 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
3095 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02003096 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003097 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
3098 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003099 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003100 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02003101
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003102Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02003103 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02003104 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003105 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02003106 * Fixed file descriptor leaks
3107
3108Security
3109 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003110 (found by Cyril Arnaud and Pierre-Alain Fouque)
3111
3112
3113= Version 1.2.14 released 2015-05-??
3114
3115Security
3116 * Fix potential invalid memory read in the server, that allows a client to
3117 crash it remotely (found by Caj Larsson).
3118 * Fix potential invalid memory read in certificate parsing, that allows a
3119 client to crash the server remotely if client authentication is enabled
3120 (found using Codenomicon Defensics).
3121 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3122 https://dl.acm.org/citation.cfm?id=2714625
3123
3124Bugfix
3125 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3126 * Fix hardclock() (only used in the benchmarking program) with some
3127 versions of mingw64 (found by kxjhlele).
3128 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3129 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3130 platforms (found with Coverity Scan).
3131
3132= Version 1.2.13 released 2015-02-16
3133Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3134 this will be made in the 1.2 branch at this point.
3135
3136Security
3137 * Fix remotely-triggerable uninitialised pointer dereference caused by
3138 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3139 for a client certificate) (found using Codenomicon Defensics).
3140 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3141 (TLS server is not affected if it doesn't ask for a client certificate)
3142 (found using Codenomicon Defensics).
3143 * Fix potential stack overflow while parsing crafted X.509 certificates
3144 (TLS server is not affected if it doesn't ask for a client certificate)
3145 found using Codenomicon Defensics).
3146 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3147 (TLS server is not affected if it doesn't ask for a client certificate).
3148
3149Bugfix
3150 * Fix potential undefined behaviour in Camellia.
3151 * Fix memory leaks in PKCS#5 and PKCS#12.
3152 * Stack buffer overflow if ctr_drbg_update() is called with too large
3153 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3154 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3155 in 1.2.12).
3156 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3157 Peter Vaskovic).
3158 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3159 * ssl_get_verify_result() now works even if the handshake was aborted due
3160 to a failed verification (found by Fredrik Axelsson).
3161 * Skip writing and parsing signature_algorithm extension if none of the
3162 key exchanges enabled needs certificates. This fixes a possible interop
3163 issue with some servers when a zero-length extension was sent. (Reported
3164 by Peter Dettman.)
3165 * On a 0-length input, base64_encode() did not correctly set output length
3166 (found by Hendrik van den Boogaard).
3167
3168Changes
3169 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3170 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003171 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3172 length of an X.509 verification chain (default = 8).
3173= Version 1.2.12 released 2014-10-24
3174
3175Security
3176 * Remotely-triggerable memory leak when parsing some X.509 certificates
3177 (server is not affected if it doesn't ask for a client certificate).
3178 (Found using Codenomicon Defensics.)
3179
3180Bugfix
3181 * Fix potential bad read in parsing ServerHello (found by Adrien
3182 Vialletelle).
3183 * ssl_close_notify() could send more than one message in some circumstances
3184 with non-blocking I/O.
3185 * x509_crt_parse() did not increase total_failed on PEM error
3186 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3187 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3188 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3189 * ssl_read() could return non-application data records on server while
3190 renegotation was pending, and on client when a HelloRequest was received.
3191 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3192
3193Changes
3194 * X.509 certificates with more than one AttributeTypeAndValue per
3195 RelativeDistinguishedName are not accepted any more.
3196 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3197 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003198 * Accept spaces at end of line or end of buffer in base64_decode().
3199
3200= Version 1.2.11 released 2014-07-11
3201Features
3202 * Entropy module now supports seed writing and reading
3203
3204Changes
3205 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3206 * Improvements to the CMake build system, contributed by Julian Ospald.
3207 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3208 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3209 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3210 * Use UTC time to check certificate validity.
3211 * Reject certificates with times not in UTC, per RFC 5280.
3212 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3213 against unwanted compiler optimizations
3214
3215Security
3216 * Forbid change of server certificate during renegotiation to prevent
3217 "triple handshake" attack when authentication mode is optional (the
3218 attack was already impossible when authentication is required).
3219 * Check notBefore timestamp of certificates and CRLs from the future.
3220 * Forbid sequence number wrapping
3221 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3222 TrustInSoft)
3223 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3224 It was possible to crash the server (and client) using crafted messages
3225 when a GCM suite was chosen.
3226
3227Bugfix
3228 * Fixed X.509 hostname comparison (with non-regular characters)
3229 * SSL now gracefully handles missing RNG
3230 * crypt_and_hash app checks MAC before final decryption
3231 * Fixed x509_crt_parse_path() bug on Windows platforms
3232 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3233 TrustInSoft)
3234 * Fixed potential overflow in certificate size verification in
3235 ssl_write_certificate() (found by TrustInSoft)
3236 * Fix ASM format in bn_mul.h
3237 * Potential memory leak in bignum_selftest()
3238 * Replaced expired test certificate
3239 * ssl_mail_client now terminates lines with CRLF, instead of LF
3240 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3241 * Fixed testing with out-of-source builds using cmake
3242 * Fixed version-major intolerance in server
3243 * Fixed CMake symlinking on out-of-source builds
3244 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3245 Alex Wilson.)
3246 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3247 out_ctr failed
3248 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3249 of one of them failed
3250 * x509_get_current_time() uses localtime_r() to prevent thread issues
3251 * Some example server programs were not sending the close_notify alert.
3252 * Potential memory leak in mpi_exp_mod() when error occurs during
3253 calculation of RR.
3254 * Improve interoperability by not writing extension length in ClientHello
3255 when no extensions are present (found by Matthew Page)
3256 * rsa_check_pubkey() now allows an E up to N
3257 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
3258 * mpi_fill_random() was creating numbers larger than requested on
3259 big-endian platform when size was not an integer number of limbs
3260 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
3261 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3262 size (found by TrustInSoft)
3263 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
3264 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3265 interpret semicolons as comment delimiters (found by Barry K. Nathan).
3266 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
3267 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02003268 tight buffers)
3269
3270= Version 1.2.10 released 2013-10-07
3271Changes
3272 * Changed RSA blinding to a slower but thread-safe version
3273
3274Bugfix
3275 * Fixed memory leak in RSA as a result of introduction of blinding
3276 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003277 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02003278
3279= Version 1.2.9 released 2013-10-01
3280Changes
3281 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
3282
3283Bugfix
3284 * Fixed potential memory leak when failing to resume a session
3285 * Fixed potential file descriptor leaks (found by Remi Gacogne)
3286 * Minor fixes
3287
3288Security
3289 * Fixed potential heap buffer overflow on large hostname setting
3290 * Fixed potential negative value misinterpretation in load_file()
3291 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02003292 (found by Cyril Arnaud and Pierre-Alain Fouque)
3293
3294= Version 1.2.8 released 2013-06-19
3295Features
3296 * Parsing of PKCS#8 encrypted private key files
3297 * PKCS#12 PBE and derivation functions
3298 * Centralized module option values in config.h to allow user-defined
3299 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
3300
3301Changes
3302 * HAVEGE random generator disabled by default
3303 * Internally split up x509parse_key() into a (PEM) handler function
3304 and specific DER parser functions for the PKCS#1 and unencrypted
3305 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00003306 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02003307 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
3308 config.h)
3309 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
3310 old PBKDF2 module
3311
3312Bugfix
3313 * Secure renegotiation extension should only be sent in case client
3314 supports secure renegotiation
3315 * Fixed offset for cert_type list in ssl_parse_certificate_request()
3316 * Fixed const correctness issues that have no impact on the ABI
3317 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003318 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02003319 instead of the x509parse_crt() wrapper that can also parse PEM
3320 certificates
3321 * x509parse_crtpath() is now reentrant and uses more portable stat()
3322 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
3323 * Fixed values for 2-key Triple DES in cipher layer
3324 * ssl_write_certificate_request() can handle empty ca_chain
3325
3326Security
3327 * A possible DoS during the SSL Handshake, due to faulty parsing of
3328 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3329
3330= Version 1.2.7 released 2013-04-13
3331Features
3332 * Ability to specify allowed ciphersuites based on the protocol version.
3333
3334Changes
3335 * Default Blowfish keysize is now 128-bits
3336 * Test suites made smaller to accommodate Raspberry Pi
3337
3338Bugfix
3339 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01003340 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01003341
3342= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01003343Bugfix
3344 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01003345 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01003346 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01003347 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01003348 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01003349 * Fixed assembly code for ARM (Thumb and regular) for some compilers
3350
3351Changes
3352 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01003353 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
3354 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01003355 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
3356 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01003357 * Re-added handling for SSLv2 Client Hello when the define
3358 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01003359 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01003360 information (not the entire chain)
3361
3362Security
Paul Bakker8804f692013-02-28 18:06:26 +01003363 * Removed further timing differences during SSL message decryption in
3364 ssl_decrypt_buf()
3365 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01003366 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01003367 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003368
3369= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01003370Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003371 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01003372 * Debug messages about padding errors during SSL message decryption are
3373 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01003374 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003375 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01003376 POLARSSL_SSL_ALL_ALERT_MESSAGES
3377
3378Security
3379 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01003380 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01003381
Paul Bakker68884e32013-01-07 18:20:04 +01003382= Version 1.2.4 released 2013-01-25
3383Changes
Paul Bakker1961b702013-01-25 14:49:24 +01003384 * More advanced SSL ciphersuite representation and moved to more dynamic
3385 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01003386 * Added ssl_handshake_step() to allow single stepping the handshake process
3387
Paul Bakker21dca692013-01-03 11:41:08 +01003388Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01003389 * Memory leak when using RSA_PKCS_V21 operations fixed
3390 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01003391 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01003392 without DN list
3393
3394= Version 1.2.3 released 2012-11-26
3395Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003396 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01003397
3398= Version 1.2.2 released 2012-11-24
3399Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003400 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01003401 data
Paul Bakker7c90da92012-11-23 14:02:40 +01003402 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003403
3404Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01003405 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01003406 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00003407
3408= Version 1.2.1 released 2012-11-20
3409Changes
3410 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00003411 bottom-up (Peer cert depth is 0)
3412
Paul Bakkerd9374b02012-11-02 11:02:58 +00003413Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00003414 * Fixes for MSVC6
3415 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01003416 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3417 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00003418 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00003419 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003420 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00003421
3422= Version 1.2.0 released 2012-10-31
3423Features
3424 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00003425 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
3426 default!
3427 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00003428 * Added support for multi-domain certificates through the X509 Subject
3429 Alternative Name extension
3430 * Added preliminary ASN.1 buffer writing support
3431 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00003432 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00003433 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00003434 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00003435 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00003436 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003437 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003438 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00003439 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00003440 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00003441 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00003442 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00003443 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00003444 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00003445 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00003446 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00003447 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00003448 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00003449 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00003450 * Added option to add minimum accepted SSL/TLS protocol version
3451
Paul Bakker048d04e2012-02-12 17:31:04 +00003452Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00003453 * Removed redundant POLARSSL_DEBUG_MSG define
3454 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00003455 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00003456 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00003457 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00003458 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
3459 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00003460 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00003461 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00003462 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
3463 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00003464 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00003465 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00003466 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00003467 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00003468 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00003469
3470Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00003471 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00003472 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00003473 * Fixed potential heap corruption in x509_name allocation
3474 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003475 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00003476 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00003477 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00003478 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00003479 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00003480 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00003481 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00003482 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00003483 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00003484 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00003485
3486Security
Paul Bakker452d5322012-04-05 12:07:34 +00003487 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003488 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02003489
3490= Version 1.1.8 released on 2013-10-01
3491Bugfix
3492 * Fixed potential memory leak when failing to resume a session
3493 * Fixed potential file descriptor leaks
3494
3495Security
3496 * Potential buffer-overflow for ssl_read_record() (independently found by
3497 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
3498 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02003499 * Potential heap buffer overflow on large hostname setting
3500
3501= Version 1.1.7 released on 2013-06-19
3502Changes
3503 * HAVEGE random generator disabled by default
3504
3505Bugfix
3506 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003507 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02003508 instead of the x509parse_crt() wrapper that can also parse PEM
3509 certificates
3510 * Fixed values for 2-key Triple DES in cipher layer
3511 * ssl_write_certificate_request() can handle empty ca_chain
3512
3513Security
3514 * A possible DoS during the SSL Handshake, due to faulty parsing of
3515 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3516
3517= Version 1.1.6 released on 2013-03-11
3518Bugfix
3519 * Fixed net_bind() for specified IP addresses on little endian systems
3520
3521Changes
3522 * Allow enabling of dummy error_strerror() to support some use-cases
3523 * Debug messages about padding errors during SSL message decryption are
3524 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
3525
3526Security
3527 * Removed timing differences during SSL message decryption in
3528 ssl_decrypt_buf()
3529 * Removed timing differences due to bad padding from
3530 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01003531 operations
3532
3533= Version 1.1.5 released on 2013-01-16
3534Bugfix
3535 * Fixed MPI assembly for SPARC64 platform
3536 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
3537 * mpi_add_abs() now correctly handles adding short numbers to long numbers
3538 with carry rollover
3539 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
3540 * Prevent reading over buffer boundaries on X509 certificate parsing
3541 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
3542 #52)
3543 * Fixed possible segfault in mpi_shift_r() (found by Manuel
3544 Pégourié-Gonnard)
3545 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3546 Pégourié-Gonnard)
3547 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
3548 * Memory leak when using RSA_PKCS_V21 operations fixed
3549 * Handle encryption with private key and decryption with public key as per
3550 RFC 2313
3551 * Fixes for MSVC6
3552
3553Security
3554 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00003555 Vanderbeken)
3556
3557= Version 1.1.4 released on 2012-05-31
3558Bugfix
3559 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
3560 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00003561 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
3562
3563= Version 1.1.3 released on 2012-04-29
3564Bugfix
3565 * Fixed random MPI generation to not generate more size than requested.
3566
3567= Version 1.1.2 released on 2012-04-26
3568Bugfix
3569 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
3570 Hui Dong)
3571
3572Security
3573 * Fixed potential memory corruption on miscrafted client messages (found by
3574 Frama-C team at CEA LIST)
3575 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00003576 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003577
3578= Version 1.1.1 released on 2012-01-23
3579Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00003580 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00003581 (Closes ticket #47, found by Hugo Leisink)
3582 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003583 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00003584 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00003585
3586= Version 1.1.0 released on 2011-12-22
3587Features
Darryl Green11999bb2018-03-13 15:22:58 +00003588 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00003589 SSL contexts without needing to set all non-connection-specific
3590 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00003591 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00003592 supported version to a server to help buggy server implementations.
3593 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00003594 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00003595 introspection functions (Closes ticket #40)
3596 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00003597 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00003598 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003599 entropy sources
3600
Paul Bakkerd246ed32011-10-06 13:18:27 +00003601Changes
3602 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00003603 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00003604 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00003605 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00003606 * Added an EXPLICIT tag number parameter to x509_get_ext()
3607 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00003608 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
3609 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00003610 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00003611 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00003612 * Loads of minimal changes to better support WINCE as a build target
3613 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00003614 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
3615 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00003616 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
3617 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01003618 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00003619 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00003620 a consequence in library code and programs
3621 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01003622 * Added permissive certificate parsing to x509parse_crt() and
3623 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00003624 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003625 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003626 * All error codes are now negative. Even on mermory failures and IO errors.
3627
3628Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00003629 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
3630 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00003631 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
3632 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00003633 * Allowed X509 key usage parsing to accept 4 byte values instead of the
3634 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00003635 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
3636 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00003637 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00003638 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00003639 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00003640 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003641 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00003642 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00003643
3644= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00003645Features
Paul Bakker343a8702011-06-09 14:27:58 +00003646 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00003647 * Added rsa_encrypt and rsa_decrypt simple example programs.
3648
3649Changes
3650 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00003651 codes instead of integers
3652
3653Bugfix
3654 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00003655 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003656
3657= Version 0.99-pre5 released on 2011-05-26
3658Features
Paul Bakkera35aa542013-03-06 17:06:21 +01003659 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00003660 (AES CTR, Camellia CTR, XTEA CBC) including the option to
3661 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00003662 * Functions requiring File System functions can now be disabled
3663 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00003664 * A error_strerror function() has been added to translate between
3665 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00003666 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003667 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00003668 * Added ssl_mail_client and ssl_fork_server as example programs.
3669
3670Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003671 * Major argument / variable rewrite. Introduced use of size_t
3672 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00003673 better unsigned / signed use. Renamed internal bigint types
3674 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00003675 * mpi_init() and mpi_free() now only accept a single MPI
3676 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01003677 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00003678 is now done with a PLUS instead of an OR as error codes
3679 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01003680 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
3681 net_recv() now returns 0 on EOF instead of
3682 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
3683 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00003684 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
3685 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01003686 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00003687 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00003688 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00003689
3690= Version 0.99-pre4 released on 2011-04-01
3691Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00003692 * Added support for PKCS#1 v2.1 encoding and thus support
3693 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00003694 * Reading of Public Key files incorporated into default x509
3695 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00003696 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003697 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01003698
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003699Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003700 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00003701 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01003702 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003703 does not zeroize memory in advance anymore. Use rsa_init()
3704 before parsing a key or keyfile!
3705
3706Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01003707 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00003708 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
3709 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00003710 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
3711 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003712 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00003713 length salt lengths
3714
Paul Bakker96743fc2011-02-12 14:30:57 +00003715= Version 0.99-pre3 released on 2011-02-28
3716This release replaces version 0.99-pre2 which had possible copyright issues.
3717Features
Paul Bakkera9507c02011-02-12 15:27:28 +00003718 * Parsing PEM private keys encrypted with DES and AES
3719 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00003720 * Added crl_app program to allow easy reading and
3721 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01003722
Paul Bakker96743fc2011-02-12 14:30:57 +00003723Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003724 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00003725 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00003726 systems only using DER encoding
3727
3728Bugfixes
3729 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00003730 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00003731 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003732 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003733 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003734 certificates (found by Mads Kiilerich)
3735 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01003736 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00003737 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00003738 found by Boris Krasnovskiy)
3739
3740Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01003741 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00003742 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00003743 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00003744
Paul Bakkerb63b0af2011-01-13 17:54:59 +00003745= Version 0.99-pre1 released on 2011-01-30
3746Features
Paul Bakker1b57b062011-01-06 15:48:19 +00003747Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00003748 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00003749 * Added reading of DHM context from memory and file
3750 * Improved X509 certificate parsing to include extended
3751 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00003752 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00003753 against the available CRLs
3754 * Detection for DES weak keys and parity bits added
3755 * Improvements to support integration in other
3756 applications:
3757 + Added generic message digest and cipher wrapper
3758 + Improved information about current capabilities,
3759 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00003760 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00003761 verification to allow external blacklisting
3762 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00003763 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00003764 libpkcs11-helper library
3765
3766Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00003767 * x509parse_time_expired() checks time in addition to
3768 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01003769 * The ciphers member of ssl_context and the cipher member
3770 of ssl_session have been renamed to ciphersuites and
3771 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00003772 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00003773 altogether
3774
3775= Version 0.14.0 released on 2010-08-16
3776Features
3777 * Added support for SSL_EDH_RSA_AES_128_SHA and
3778 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
3779 * Added compile-time and run-time version information
3780 * Expanded ssl_client2 arguments for more flexibility
3781 * Added support for TLS v1.1
3782
3783Changes
3784 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01003785 * Removed dependency on rand() in rsa_pkcs1_encrypt().
3786 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00003787 changed the prototype of rsa_pkcs1_encrypt(),
3788 rsa_init() and rsa_gen_key().
3789 * Some SSL defines were renamed in order to avoid
3790 future confusion
3791
3792Bug fixes
3793 * Fixed CMake out of source build for tests (found by
3794 kkert)
3795 * rsa_check_private() now supports PKCS1v2 keys as well
3796 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
3797 generator
3798
3799= Version 0.13.1 released on 2010-03-24
3800Bug fixes
3801 * Fixed Makefile in library that was mistakenly merged
3802 * Added missing const string fixes
3803
3804= Version 0.13.0 released on 2010-03-21
3805Features
3806 * Added option parsing for host and port selection to
3807 ssl_client2
3808 * Added support for GeneralizedTime in X509 parsing
3809 * Added cert_app program to allow easy reading and
3810 printing of X509 certificates from file or SSL
3811 connection.
3812
3813Changes
3814 * Added const correctness for main code base
3815 * X509 signature algorithm determination is now
3816 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01003817 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00003818 identical interface (returning int result values)
3819 * Changed ARC4 to use separate input/output buffer
3820 * Added reset function for HMAC context as speed-up
3821 for specific use-cases
3822
3823Bug fixes
3824 * Fixed bug resulting in failure to send the last
3825 certificate in the chain in ssl_write_certificate() and
3826 ssl_write_certificate_request() (found by fatbob)
3827 * Added small fixes for compiler warnings on a Mac
3828 (found by Frank de Brabander)
3829 * Fixed algorithmic bug in mpi_is_prime() (found by
3830 Smbat Tonoyan)
3831
3832= Version 0.12.1 released on 2009-10-04
3833Changes
3834 * Coverage test definitions now support 'depends_on'
3835 tagging system.
3836 * Tests requiring specific hashing algorithms now honor
3837 the defines.
3838
3839Bug fixes
3840 * Changed typo in #ifdef in x509parse.c (found
3841 by Eduardo)
3842
3843= Version 0.12.0 released on 2009-07-28
3844Features
3845 * Added CMake makefiles as alternative to regular Makefiles.
3846 * Added preliminary Code Coverage tests for AES, ARC4,
3847 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
3848 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
3849 and X509parse.
3850
3851Changes
3852 * Error codes are not (necessarily) negative. Keep
3853 this is mind when checking for errors.
3854 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
3855 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
3856 * Changed interface for AES and Camellia setkey functions
3857 to indicate invalid key lengths.
3858
3859Bug fixes
3860 * Fixed include location of endian.h on FreeBSD (found by
3861 Gabriel)
3862 * Fixed include location of endian.h and name clash on
3863 Apples (found by Martin van Hensbergen)
3864 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01003865 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00003866 (found by code coverage tests)
3867 * Prevented use of long long in bignum if
3868 POLARSSL_HAVE_LONGLONG not defined (found by Giles
3869 Bathgate).
3870 * Fixed incorrect handling of negative strings in
3871 mpi_read_string() (found by code coverage tests).
3872 * Fixed segfault on handling empty rsa_context in
3873 rsa_check_pubkey() and rsa_check_privkey() (found by
3874 code coverage tests).
3875 * Fixed incorrect handling of one single negative input
3876 value in mpi_add_abs() (found by code coverage tests).
3877 * Fixed incorrect handling of negative first input
3878 value in mpi_sub_abs() (found by code coverage tests).
3879 * Fixed incorrect handling of negative first input
3880 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
3881 change also affects mpi_write_string() (found by code
3882 coverage tests).
3883 * Corrected is_prime() results for 0, 1 and 2 (found by
3884 code coverage tests).
3885 * Fixed Camellia and XTEA for 64-bit Windows systems.
3886
3887= Version 0.11.1 released on 2009-05-17
3888 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
3889 SHA-512 in rsa_pkcs1_sign()
3890
3891= Version 0.11.0 released on 2009-05-03
3892 * Fixed a bug in mpi_gcd() so that it also works when both
3893 input numbers are even and added testcases to check
3894 (found by Pierre Habouzit).
3895 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
3896 one way hash functions with the PKCS#1 v1.5 signing and
3897 verification.
3898 * Fixed minor bug regarding mpi_gcd located within the
3899 POLARSSL_GENPRIME block.
3900 * Fixed minor memory leak in x509parse_crt() and added better
3901 handling of 'full' certificate chains (found by Mathias
3902 Olsson).
3903 * Centralized file opening and reading for x509 files into
3904 load_file()
3905 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01003906 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00003907 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
3908 padlock and timing code.
3909 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
3910 responsible for crashes and unwanted behaviour.
3911 * Added support for Certificate Revocation List (CRL) parsing.
3912 * Added support for CRL revocation to x509parse_verify() and
3913 SSL/TLS code.
3914 * Fixed compatibility of XTEA and Camellia on a 64-bit system
3915 (found by Felix von Leitner).
3916
3917= Version 0.10.0 released on 2009-01-12
3918 * Migrated XySSL to PolarSSL
3919 * Added XTEA symmetric cipher
3920 * Added Camellia symmetric cipher
3921 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
3922 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
3923 * Fixed dangerous bug that can cause a heap overflow in
3924 rsa_pkcs1_decrypt (found by Christophe Devine)
3925
3926================================================================
3927XySSL ChangeLog
3928
3929= Version 0.9 released on 2008-03-16
3930
3931 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
3932 * Enabled support for large files by default in aescrypt2.c
3933 * Preliminary openssl wrapper contributed by David Barrett
3934 * Fixed a bug in ssl_write() that caused the same payload to
3935 be sent twice in non-blocking mode when send returns EAGAIN
3936 * Fixed ssl_parse_client_hello(): session id and challenge must
3937 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
3938 * Added user-defined callback debug function (Krystian Kolodziej)
3939 * Before freeing a certificate, properly zero out all cert. data
3940 * Fixed the "mode" parameter so that encryption/decryption are
3941 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01003942 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00003943 * Correctly handle the case in padlock_xcryptcbc() when input or
3944 output data is non-aligned by falling back to the software
3945 implementation, as VIA Nehemiah cannot handle non-aligned buffers
3946 * Fixed a memory leak in x509parse_crt() which was reported by Greg
3947 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
3948 Matthew Page who reported several bugs
3949 * Fixed x509_get_ext() to accept some rare certificates which have
3950 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
3951 * Added support on the client side for the TLS "hostname" extension
3952 (patch contributed by David Patino)
3953 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
3954 string is passed as the CN (bug reported by spoofy)
3955 * Added an option to enable/disable the BN assembly code
3956 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
3957 * Disabled obsolete hash functions by default (MD2, MD4); updated
3958 selftest and benchmark to not test ciphers that have been disabled
3959 * Updated x509parse_cert_info() to correctly display byte 0 of the
3960 serial number, setup correct server port in the ssl client example
3961 * Fixed a critical denial-of-service with X.509 cert. verification:
3962 peer may cause xyssl to loop indefinitely by sending a certificate
3963 for which the RSA signature check fails (bug reported by Benoit)
3964 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
3965 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
3966 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
3967 * Modified ssl_parse_client_key_exchange() to protect against
3968 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
3969 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
3970 * Updated rsa_gen_key() so that ctx->N is always nbits in size
3971 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
3972 David Barrett and Dusan Semen
3973
3974= Version 0.8 released on 2007-10-20
3975
3976 * Modified the HMAC functions to handle keys larger
3977 than 64 bytes, thanks to Stephane Desneux and gary ng
3978 * Fixed ssl_read_record() to properly update the handshake
3979 message digests, which fixes IE6/IE7 client authentication
3980 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
3981 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
3982 * Added user-defined callbacks for handling I/O and sessions
3983 * Added lots of debugging output in the SSL/TLS functions
3984 * Added preliminary X.509 cert. writing by Pascal Vizeli
3985 * Added preliminary support for the VIA PadLock routines
3986 * Added AES-CFB mode of operation, contributed by chmike
3987 * Added an SSL/TLS stress testing program (ssl_test.c)
3988 * Updated the RSA PKCS#1 code to allow choosing between
3989 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
3990 * Updated ssl_read() to skip 0-length records from OpenSSL
3991 * Fixed the make install target to comply with *BSD make
3992 * Fixed a bug in mpi_read_binary() on 64-bit platforms
3993 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
3994 * Fixed a long standing memory leak in mpi_is_prime()
3995 * Replaced realloc with malloc in mpi_grow(), and set
3996 the sign of zero as positive in mpi_init() (reported
3997 by Jonathan M. McCune)
3998
3999= Version 0.7 released on 2007-07-07
4000
4001 * Added support for the MicroBlaze soft-core processor
4002 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4003 connections from being established with non-blocking I/O
4004 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4005 * Fixed the "PIC register ebx clobbered in asm" bug
4006 * Added HMAC starts/update/finish support functions
4007 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4008 * Fixed the net_set_*block routines, thanks to Andreas
4009 * Added a few demonstration programs: md5sum, sha1sum,
4010 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4011 * Added new bignum import and export helper functions
4012 * Rewrote README.txt in program/ssl/ca to better explain
4013 how to create a test PKI
4014
4015= Version 0.6 released on 2007-04-01
4016
4017 * Ciphers used in SSL/TLS can now be disabled at compile
4018 time, to reduce the memory footprint on embedded systems
4019 * Added multiply assembly code for the TriCore and modified
4020 havege_struct for this processor, thanks to David Patiño
4021 * Added multiply assembly code for 64-bit PowerPCs,
4022 thanks to Peking University and the OSU Open Source Lab
4023 * Added experimental support of Quantum Cryptography
4024 * Added support for autoconf, contributed by Arnaud Cornet
4025 * Fixed "long long" compilation issues on IA-64 and PPC64
4026 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4027 was not being correctly defined on ARM and MIPS
4028
4029= Version 0.5 released on 2007-03-01
4030
4031 * Added multiply assembly code for SPARC and Alpha
4032 * Added (beta) support for non-blocking I/O operations
4033 * Implemented session resuming and client authentication
4034 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4035 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4036 * Improved the performance of the EDH key exchange
4037 * Fixed a bug that caused valid packets with a payload
4038 size of 16384 bytes to be rejected
4039
4040= Version 0.4 released on 2007-02-01
4041
4042 * Added support for Ephemeral Diffie-Hellman key exchange
4043 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4044 * Various improvement to the modular exponentiation code
4045 * Rewrote the headers to generate the API docs with doxygen
4046 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4047 generated) and in ssl_parse_client_hello (max. client
4048 version was not properly set), thanks to Didier Rebeix
4049 * Fixed another bug in ssl_parse_client_hello: clients with
4050 cipherlists larger than 96 bytes were incorrectly rejected
4051 * Fixed a couple memory leak in x509_read.c
4052
4053= Version 0.3 released on 2007-01-01
4054
4055 * Added server-side SSLv3 and TLSv1.0 support
4056 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01004057 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00004058 * Fixed a bug in the CBC code, thanks to dowst; also,
4059 the bignum code is no longer dependent on long long
4060 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4061 * Updated timing.c for improved compatibility with i386
4062 and 486 processors, thanks to Arnaud Cornet
4063
4064= Version 0.2 released on 2006-12-01
4065
4066 * Updated timing.c to support ARM and MIPS arch
4067 * Updated the MPI code to support 8086 on MSVC 1.5
4068 * Added the copyright notice at the top of havege.h
4069 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4070 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4071 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4072 * Fixed a bug in rsa_check_privkey that would wrongly cause
4073 valid RSA keys to be dismissed (thanks to oldwolf)
4074 * Fixed a bug in mpi_is_prime that caused some primes to fail
4075 the Miller-Rabin primality test
4076
4077 I'd also like to thank Younès Hafri for the CRUX linux port,
4078 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4079 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00004080
4081= Version 0.1 released on 2006-11-01