blob: 491b86a71d37c7cb0e00ff3564e51264b3b9e7f8 [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
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00003= mbed TLS x.x.x branch released xxxx-xx-xx
4
5New deprecations
6 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
7 SSL module for hardware acceleration of individual records.
8
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01009Security
10 * Fix side channel in ECC code that allowed an adversary with access to
11 precise enough timing and memory access information (typically an
12 untrusted operating system attacking a secure enclave) to fully recover
13 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
14 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
15
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +010016Bugfix
17 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
18 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
19
Gilles Peskine2f084fe2020-03-02 21:48:03 +010020Changes
21 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
22 is back directly in the present repository.
23
Janos Follath138c2ea2020-02-19 14:32:24 +000024= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +000025
Andres Amaya Garcia09634242018-11-29 09:55:41 +000026New deprecations
27 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
28 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +000029 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +010030 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
31 library which allows TLS authentication to use keys stored in a
32 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +000033
Gilles Peskinef142d4c2020-02-11 19:05:03 +010034Security
35 * Fix potential memory overread when performing an ECDSA signature
36 operation. The overread only happens with cryptographically low
37 probability (of the order of 2^-n where n is the bitsize of the curve)
38 unless the RNG is broken, and could result in information disclosure or
39 denial of service (application crash or extra resource consumption).
40 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +010041 * To avoid a side channel vulnerability when parsing an RSA private key,
42 read all the CRT parameters from the DER structure rather than
43 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
44 Brumley. Reported and fix contributed by Jack Lloyd.
45 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +010046
47Features
48 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
49 support without SHA-384.
50
51API changes
52 * Change the encoding of key types and curves in the PSA API. The new
53 values are aligned with the upcoming release of the PSA Crypto API
54 specification version 1.0.0. The main change which may break some
55 existing code is that elliptic curve key types no longer encode the
56 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
57 a curve family and the key size determines the exact curve (for example,
58 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
59
Jaeden Amero62236d72020-01-24 18:20:22 +000060Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +010061 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +010062 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
63 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +010064 * Fix some false-positive uninitialized variable warnings in X.509. Fix
65 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +010066 * Fix a possible error code mangling in psa_mac_verify_finish() when
67 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +000068 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
69 RSA keys that would later be rejected by functions expecting private
70 keys. Found by Catena cyber using oss-fuzz (issue 20467).
71 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
72 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +000073
Jaeden Amerod56a2af2020-01-15 18:07:20 +000074= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +030075
Gilles Peskine6a4c3402020-01-22 18:28:24 +010076Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +010077 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +010078 entropy function to obtain entropy for a nonce if the entropy size is less
79 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +010080 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +010081 nonce length to 0.
82
83Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +010084 * Enforce that mbedtls_entropy_func() gathers a total of
85 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +010086 default configuration, on a platform with a single entropy source, the
87 entropy module formerly only grabbed 32 bytes, which is good enough for
88 security if the source is genuinely strong, but less than the expected 64
89 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +010090 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
91 mbedtls_internal_aes_decrypt() before exiting the function. The value of
92 these variables can be used to recover the last round key. To follow best
93 practice and to limit the impact of buffer overread vulnerabilities (like
94 Heartbleed) we need to zeroize them before exiting the function.
95 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
96 Grant Hernandez, and Kevin Butler (University of Florida) and
97 Dave Tian (Purdue University).
98 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
99 constant time/constant trace, so side channel attacks can retrieve the
100 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
101 to have only large prime factors), and then, by brute force, recover the
102 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
103 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
104 timings on the comparison in the key generation enabled the attacker to
105 learn leading bits of the ephemeral key used during ECDSA signatures and to
106 recover the private key. Reported by Jeremy Dubeuf.
107 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
108 failures could happen with alternative implementations of AES. Bug
109 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
110 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100111
112Features
113 * Key derivation inputs in the PSA API can now either come from a key object
114 or from a buffer regardless of the step type.
115 * The CTR_DRBG module can grab a nonce from the entropy source during the
116 initial seeding. The default nonce length is chosen based on the key size
117 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100118 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100119 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100120 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100121
122API changes
123 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
124 key derivation function, use a buffer instead (this is now always
125 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100126 * Rename psa_asymmetric_sign() to psa_sign_hash() and
127 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100128
irwir6c0da642019-09-26 21:07:41 +0300129Bugfix
130 * Fix an incorrect size in a debugging message. Reported and fix
131 submitted by irwir. Fixes #2717.
132 * Fix an unused variable warning when compiling without DTLS.
133 Reported and fix submitted by irwir. Fixes #2800.
134 * Remove a useless assignment. Reported and fix submitted by irwir.
135 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100136 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +0100137 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100138 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100139 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100140 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100141 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100142 * mbedtls_ctr_drbg_set_entropy_len() and
143 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
144 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100145
146Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100147 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100148 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100149 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100150 before).
151 * Variables containing error codes are now initialized to an error code
152 rather than success, so that coding mistakes or memory corruption tends to
153 cause functions to return this error code rather than a success. There are
154 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +0100155 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100156 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100157 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100158 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +0100159 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100160 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100161 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +0300162
Jaeden Amero914a5072019-09-18 13:35:57 +0100163= mbed TLS 2.19.1 branch released 2019-09-16
164
165Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -0600166 * Declare include headers as PUBLIC to propagate to CMake project consumers
167 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +0100168 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
169 TLS sessions with tools like Wireshark.
170
171API Changes
172 * Make client_random and server_random const in
173 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
174 from modifying the client/server hello.
175
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200176Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +0100177 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200178 contributed by apple-ihack-geek in #2663.
179
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100180= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000181
Gilles Peskine52157832018-08-11 00:51:04 +0200182Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100183 * Fix a missing error detection in ECJPAKE. This could have caused a
184 predictable shared secret if a hardware accelerator failed and the other
185 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +0200186 * When writing a private EC key, use a constant size for the private
187 value, as specified in RFC 5915. Previously, the value was written
188 as an ASN.1 INTEGER, which caused the size of the key to leak
189 about 1 bit of information on average and could cause the value to be
190 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +0000191 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
192 implement blinding. Because of this for the same key and message the same
193 blinding value was generated. This reduced the effectiveness of the
194 countermeasure and leaked information about the private key through side
195 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +0200196
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000197Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200198 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +0200199 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200200 store it in non-volatile storage, and later using it for TLS session
201 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +0300202 * Add a new API function mbedtls_ssl_check_record() to allow checking that
203 an incoming record is valid, authentic and has not been seen before. This
204 feature can be used alongside Connection ID and SSL context serialisation.
205 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
206 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100207 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
208 (https://project-everest.github.io/). It can be enabled at compile time
209 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
210 verified and significantly faster, but is only supported on x86 platforms
211 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
212 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +0100213 * Add mbedtls_net_close(), enabling the building of forking servers where
214 the parent process closes the client socket and continue accepting, and
215 the child process closes the listening socket and handles the client
216 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000217
Gilles Peskine60b29d62019-08-14 18:37:59 +0200218API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +0200219 * Add DER-encoded test CRTs to library/certs.c, allowing
220 the example programs ssl_server2 and ssl_client2 to be run
221 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
222 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100223 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
224 list all curves for which at least one of ECDH or ECDSA is supported, not
225 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
226 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
227 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100228 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
229 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
230 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +0000231
232New deprecations
233 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
234 RNG function as an input.
235 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
236 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +0200237
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000238Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +0100239 * Fix missing bounds checks in X.509 parsing functions that could
240 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
241 * Fix multiple X.509 functions previously returning ASN.1 low-level error
242 codes to always wrap these codes into X.509 high level error codes before
243 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +0100244 * Fix to allow building test suites with any warning that detects unused
245 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +0100246 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +0100247 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +0100248 * Fix build failure when building with mingw on Windows by including
249 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +0100250 * Fix Visual Studio Release x64 build configuration by inheriting
251 PlatformToolset from the project configuration. Fixes #1430 reported by
252 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +0100253 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
254 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +0200255 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +0100256 * Avoid use of statically sized stack buffers for certificate writing.
257 This previously limited the maximum size of DER encoded certificates
258 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -0400259 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +0200260 * Update test certificates that were about to expire. Reported by
261 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +0200262 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
263 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
264 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +0100265 * Fix propagation of restart contexts in restartable EC operations.
266 This could previously lead to segmentation faults in builds using an
267 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +0100268 * Fix memory leak in in mpi_miller_rabin(). Contributed by
269 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -0600270 * Improve code clarity in x509_crt module, removing false-positive
271 uninitialized variable warnings on some recent toolchains (GCC8, etc).
272 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +0100273 * Fix bug in endianness conversion in bignum module. This lead to
274 functionally incorrect code on bigendian systems which don't have
275 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +0100276
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000277Changes
Hanno Becker136512b2019-05-30 11:16:02 +0100278 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +0200279 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
280 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +0100281 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -0600282 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
283 docker-env.sh) to simplify running test suites on a Linux host. Contributed
284 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +0100285 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
286 test runs without variability. Contributed by Philippe Antoine (Catena
287 cyber) in #2681.
288 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +0200289 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
290 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100291 * Remove the crypto part of the library from Mbed TLS. The crypto
292 code and tests are now only available via Mbed Crypto, which
293 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000294
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100295= mbed TLS 2.18.1 branch released 2019-07-12
296
Jaeden Ameroded319d2019-05-30 13:18:24 +0100297Bugfix
298 * Fix build failure when building with mingw on Windows by including
299 stdarg.h where needed. Fixes #2656.
300
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100301Changes
302 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
303 Ashley Duncan in #2609.
304
Jaeden Amerob1c72f52019-06-11 17:18:09 +0100305= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500306
Hanno Beckerac4172c2019-01-31 09:27:04 +0000307Features
308 * Add the Any Policy certificate policy oid, as defined in
309 rfc 5280 section 4.2.1.4.
310 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
311 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +0000312 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
313 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +0000314 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +0000315 Contributed by Jack Lloyd and Fortanix Inc.
316 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000317 and the used tls-prf.
318 * Add public API for tls-prf function, according to requested enum.
319 * Add support for parsing otherName entries in the Subject Alternative Name
320 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +0000321 as defined in RFC 4108 section 5.
322 * Add support for parsing certificate policies extension, as defined in
323 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
324 supported.
325 * List all SAN types in the subject_alt_names field of the certificate.
326 Resolves #459.
327 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +0000328 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
329 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +0000330 lifetime of the underlying transport by adding a connection identifier
331 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500332 incoming record with the correct connection data even after the peer has
333 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +0000334 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
335 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
336
Paul Bakker5121ce52009-01-03 21:22:43 +0000337
Jaeden Amero4e0db562019-08-27 11:18:28 +0100338API Changes
339 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
340 and the used tls-prf.
341 * Add public API for tls-prf function, according to requested enum.
342
Paul Bakker5121ce52009-01-03 21:22:43 +0000343Bugfix
344 * Fix private key DER output in the key_app_writer example. File contents
345 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
346 Christian Walther in #2239.
347 * Fix potential memory leak in X.509 self test. Found and fixed by
348 Junhwan Park, #2106.
349 * Reduce stack usage of hkdf tests. Fixes #2195.
350 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
351 used with negative inputs. Found by Guido Vranken in #2404. Credit to
352 OSS-Fuzz.
353 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
354 either used both encrypt and decrypt key schedules, or which perform padding.
355 GCM and CCM were not affected. Fixed by Jack Lloyd.
356 * Fix incorrect default port number in ssl_mail_client example's usage.
357 Found and fixed by irwir. #2337
358 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
359 Fixed by Peter Kolbus (Garmin). #2579
360 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +0000361 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
362 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500363 for the parameter.
364 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +0000365 sni entry parameter. Reported by inestlerode in #560.
366 * Set the next sequence of the subject_alt_name to NULL when deleting
367 sequence on failure. Found and fix suggested by Philippe Antoine.
368 Credit to OSS-Fuzz.
369
Paul Bakker5121ce52009-01-03 21:22:43 +0000370Changes
371 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
372 mbedTLS configuration only SHA-2 signed certificates are accepted.
373 This certificate is used in the demo server programs, which lead the
374 client programs to fail at the peer's certificate verification
375 due to an unacceptable hash signature. The certificate has been
376 updated to one that is SHA-256 signed. Fix contributed by
377 Illya Gerasymchuk.
378 * Return from various debugging routines immediately if the
379 provided SSL context is unset.
380 * Remove dead code from bignum.c in the default configuration.
381 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
382 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
383 Contributed by Peter Kolbus (Garmin).
384 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
385 improve clarity. Fixes #2258.
386
387= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +0000388
389Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500390 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
391 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000392 at the cost of additional lifetime constraints on the input
393 buffer, but at the benefit of reduced RAM consumption.
394 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
395 named bitstring in DER as required by RFC 5280 Appendix B.
396 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
397 from the default list (enabled by default). See
398 https://sweet32.info/SWEET32_CCS16.pdf.
399
400API Changes
401 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500402 See the Features section for more information.
403 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
404 for the benefit of saving RAM, by disabling the new compile-time
405 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
406 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
407 always return NULL, and removes the peer_cert field from the
408 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +0100409 certificate.
410
411Security
412 * Make mbedtls_ecdh_get_params return an error if the second key
413 belongs to a different group from the first. Before, if an application
414 passed keys that belonged to different group, the first key's data was
415 interpreted according to the second group, which could lead to either
416 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500417 latter case, this could expose at most 5 bits of the private key.
418
419Bugfix
420 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
421 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
422 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
423 Raised as a comment in #1996.
424 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
425 previously lead to a stack overflow on constrained targets.
426 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
427 in the header files, which missed the precompilation check. #971
428 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
429 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +0000430 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
431 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +0200432 * Fix signed-to-unsigned integer conversion warning
433 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -0600434 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
435 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +0100436 * Fix false failure in all.sh when backup files exist in include/mbedtls
437 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
438 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
439 mbedtls_asn1_write_bitstring().
440 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
441 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +0000442 correctly as trailing zeroes were not accounted for as unused bits in the
443 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +0000444
445Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500446 * Reduce RAM consumption during session renegotiation by not storing
447 the peer CRT chain and session ticket twice.
448 * Include configuration file in all header files that use configuration,
449 instead of relying on other header files that they include.
450 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -0500451 * Add support for alternative CSR headers, as used by Microsoft and defined
452 in RFC 7468. Found by Michael Ernst. Fixes #767.
453 * Correct many misspellings. Fixed by MisterDA #2371.
454 * Provide an abstraction of vsnprintf to allow alternative implementations
455 for platforms that don't provide it. Based on contributions by Joris Aerts
456 and Nathaniel Wesley Filardo.
457 * Fix clobber list in MIPS assembly for large integer multiplication.
458 Previously, this could lead to functionally incorrect assembly being
459 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +0100460 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
461 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +0100462 * Reduce the complexity of the timing tests. They were assuming more than the
463 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +0100464 * Fix configuration queries in ssl-opt.h. #2030
465 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +0000466 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
467 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500468 * Ciphersuites based on 3DES now have the lowest priority by default when
469 they are enabled.
470
471= mbed TLS 2.16.0 branch released 2018-12-21
472
473Features
474 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
475 of parameters in the API. This allows detection of obvious misuses of the
476 API, such as passing NULL pointers. The API of existing functions hasn't
477 changed, but requirements on parameters have been made more explicit in
478 the documentation. See the corresponding API documentation for each
479 function to see for which parameter values it is defined. This feature is
480 disabled by default. See its API documentation in config.h for additional
481 steps you have to take when enabling it.
482
483API Changes
484 * The following functions in the random generator modules have been
485 deprecated and replaced as shown below. The new functions change
486 the return type from void to int to allow returning error codes when
487 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
488 primitive. Fixes #1798.
489 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
490 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
491 * Extend ECDH interface to enable alternative implementations.
492 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
493 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
494 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
495 * Additional parameter validation checks have been added for the following
496 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
497 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
498 Where modules have had parameter validation added, existing parameter
499 checks may have changed. Some modules, such as Chacha20 had existing
500 parameter validation whereas other modules had little. This has now been
501 changed so that the same level of validation is present in all modules, and
502 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
503 is off. That means that checks which were previously present by default
504 will no longer be.
505
506New deprecations
507 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
508 in favor of functions that can return an error code.
509
510Bugfix
511 * Fix for Clang, which was reporting a warning for the bignum.c inline
512 assembly for AMD64 targets creating string literals greater than those
513 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
514 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
515 through qemu user emulation. Reported and fix suggested by randombit
516 in #1212. Fixes #1212.
517 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
518 This could lead to a buffer overflow, but only in case ticket authentication
519 was broken. Reported and fix suggested by Guido Vranken in #659.
520 * Add explicit integer to enumeration type casts to example program
521 programs/pkey/gen_key which previously led to compilation failure
522 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
523 * Fix double initialization of ECC hardware that made some accelerators
524 hang.
525 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -0500526 of check for certificate/key matching. Reported by Attila Molnar, #507.
527
528 = mbed TLS 2.15.1 branch released 2018-11-30
529
530 Changes
531 * Update the Mbed Crypto submodule to version 0.1.0b2.
532
533 = mbed TLS 2.15.0 branch released 2018-11-23
534
535 Features
536 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
537 Mbed Crypto as the source of the cryptography implementation.
538 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
539 the PSA Crypto API from Mbed Crypto when additionally used with the
540 USE_CRYPTO_SUBMODULE build option.
541
542 Changes
543 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500544 from the cipher abstraction layer. Fixes #2198.
545
546= mbed TLS 2.14.1 branch released 2018-11-30
547
548Security
549 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
550 decryption that could lead to a Bleichenbacher-style padding oracle
551 attack. In TLS, this affects servers that accept ciphersuites based on
552 RSA decryption (i.e. ciphersuites whose name contains RSA but not
553 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
554 (University of Adelaide), Daniel Genkin (University of Michigan),
555 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
556 (University of Adelaide, Data61). The attack is described in more detail
557 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
558 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
559 via branching and memory access patterns. An attacker who could submit
560 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
561 of the decryption and not its result could nonetheless decrypt RSA
562 plaintexts and forge RSA signatures. Other asymmetric algorithms may
563 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
564 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
565 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
566 modules.
567
568API Changes
569 * The new functions mbedtls_ctr_drbg_update_ret() and
570 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
571 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500572 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +0000573 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +0200574
Hanno Beckerd3445da2018-11-02 09:36:45 +0000575= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +0000576
Simon Butcherb35e59d2018-11-19 15:49:26 +0000577Security
Simon Butcher681edee2018-11-07 16:25:38 +0000578 * Fix overly strict DN comparison when looking for CRLs belonging to a
579 particular CA. This previously led to ignoring CRLs when the CRL's issuer
580 name and the CA's subject name differed in their string encoding (e.g.,
581 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +0100582 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +0000583 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +0100584 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +0000585 incoming message buffer was placed within the first 64KiB of address
586 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +0100587 to trigger a memory access up to 64KiB beyond the incoming message buffer,
588 potentially leading to an application crash or information disclosure.
589 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
590 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +0000591 adversary to construct non-primes that would be erroneously accepted as
592 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +0100593 security of TLS, but can matter in other contexts with numbers chosen
594 potentially by an adversary that should be prime and can be validated.
595 For example, the number of rounds was enough to securely generate RSA key
596 pairs or Diffie-Hellman parameters, but was insufficient to validate
597 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +0000598 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +0200599 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +0200600
Simon Butcherb35e59d2018-11-19 15:49:26 +0000601Features
602 * Add support for temporarily suspending expensive ECC computations after
603 some configurable amount of operations. This is intended to be used in
604 constrained, single-threaded systems where ECC is time consuming and can
605 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +0200606 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
607 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
608 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
609 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +0000610 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
611 including client authentication).
612 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
613 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +0000614 MPI multiplications used in ECC and RSA cryptography. Contributed by
615 Aurelien Jarno.
616 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
617 signature always used a salt with the same length as the hash, and returned
618 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +0000619 shorter. This allows the library to support all hash and signature sizes
620 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +0200621 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +0000622 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +0000623
624API Changes
625 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
626 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +0000627 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +0300628 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +0000629
630New deprecations
631 * All module specific errors following the form
632 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +0000633 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +0000634 platform error.
635 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +0100636 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
637 by the equivalent plaform error.
638 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +0300639 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +0100640 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +0000641
642Bugfix
643 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
644 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +0100645 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
646 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +0100647 * Fix a bug in the update function for SSL ticket keys which previously
648 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +0100649 * Fix failure in hmac_drbg in the benchmark sample application, when
650 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
651 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +0100652 which lead to accepting properly authenticated but improperly
653 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +0000654 * Fix memory leak and freeing without initialization in the example
655 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +0100656 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
657 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
658 * Zeroize memory used for buffering or reassembling handshake messages
659 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +0000660 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
661 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
662 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +0000663 UTF8String. Previously, the use of the PrintableString format led to
664 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +0100665 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
666 Thomas-Dee.
667 * Fix compilation failure for configurations which use compile time
668 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +0100669 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
670 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +0100671
Simon Butcherc86993e2018-09-27 09:48:54 +0100672Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +0200673 * Removed support for Yotta as a build tool.
674 * Add tests for session resumption in DTLS.
675 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +0100676 test the handling of large packets and small packets on the client side
677 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +0100678 * Change the dtls_client and dtls_server samples to work by default over
679 IPv6 and optionally by a build option over IPv4.
680 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +0000681 calls, rather than Win32 API calls directly. This is necessary to avoid
682 conflict with C runtime usage. Found and fixed by irwir.
683 * Remember the string format of X.509 DN attributes when replicating
684 X.509 DNs. Previously, DN attributes were always written in their default
685 string format (mostly PrintableString), which could lead to CRTs being
686 created which used PrintableStrings in the issuer field even though the
687 signing CA used UTF8Strings in its subject field; while X.509 compliant,
688 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +0000689 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
690 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +0100691 * Improve documentation of mbedtls_ssl_get_verify_result().
692 Fixes #517 reported by github-monoculture.
693 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +0100694 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +0100695 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +0100696
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +0100697= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +0100698
Hanno Becker921b76d2018-09-05 16:21:36 +0100699API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +0100700 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +0100701 whose implementation should behave as a thread-safe version of gmtime().
702 This allows users to configure such an implementation at compile time when
703 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +0100704 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +0100705 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +0100706
707Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +0100708 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +0100709 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +0100710
k-stachowiak21feae52018-07-09 14:42:35 +0200711= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +0200712
713Security
714 * Fix an issue in the X.509 module which could lead to a buffer overread
715 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +0200716 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +0200717 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +0200718
719Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +0200720 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +0200721 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +0200722 with the peer, as well as by a new per-connection MTU option, set using
723 mbedtls_ssl_set_mtu().
724 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +0100725 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
726 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +0100727 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +0100728 enabled by default.
729 * Add support for buffering out-of-order handshake messages in DTLS.
730 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +0100731 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
732 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +0100733
Hanno Beckerd87a59c2018-08-14 16:34:55 +0100734API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +0200735 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +0200736 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +0100737
738Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +0200739 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
740 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +0100741 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
742 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +0300743 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +0300744 Fix contributed by Espressif Systems.
745 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +0100746 This improves compliance to RFC 4492, and as a result, solves
747 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +0100748 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +0100749 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +0100750 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
751 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
752 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
753 with TLS versions 1.1 and earlier when the server requested authentication
754 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +0100755 check in parsing the CertificateRequest message,
756 introduced in Mbed TLS 2.12.0. Fixes #1954.
757 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +0100758 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
759 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +0100760 * Fix undefined shifts with negative values in certificates parsing
761 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +0100762 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +0200763 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +0100764 * Remove redundant else statement. Raised by irwir. Fixes #1776.
765
766Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +0100767 * Copy headers preserving timestamps when doing a "make install".
768 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +0100769 * Allow the forward declaration of public structs. Contributed by Dawid
770 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +0100771 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +0100772 CCM test vectors from RAM.
773 * Add support for buffering of out-of-order handshake messages.
774 * Add warnings to the documentation of the HKDF module to reduce the risk
775 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +0100776 functions. Fixes #1775. Reported by Brian J. Murray.
777
Gilles Peskine104d8582018-06-27 10:57:33 +0200778= mbed TLS 2.12.0 branch released 2018-07-25
779
780Security
781 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
782 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
783 partially recover the plaintext of messages under some conditions by
784 exploiting timing measurements. With DTLS, the attacker could perform
785 this recovery by sending many messages in the same connection. With TLS
786 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
787 worked if the same secret (for example a HTTP Cookie) has been repeatedly
788 sent over connections manipulated by the attacker. Connections using GCM
789 or CCM instead of CBC, using hash sizes other than SHA-384, or using
790 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
791 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +0200792 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
793 Shamir.
794 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +0200795 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +0100796 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +0200797 plaintext of messages under some conditions by using a cache attack
798 targeting an internal MD/SHA buffer. With TLS or if
799 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
800 the same secret (for example a HTTP Cookie) has been repeatedly sent over
801 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +0200802 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
803 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
804 * Add a counter-measure against a vulnerability in TLS ciphersuites based
805 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
806 execute code on the local machine as well as manipulate network packets,
807 to partially recover the plaintext of messages under some conditions (see
808 previous entry) by using a cache attack targeting the SSL input record
809 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +0200810 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +0200811 Eyal Ronen and Adi Shamir.
812
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +0200813Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100814 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +0200815 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +0100816 by Daniel King.
817 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +0100818 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
819 Contributed by Augustin Cavalier.
820 * Make the receive and transmit buffers independent sizes, for situations
821 where the outgoing buffer can be fixed at a smaller size than the incoming
822 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +0300823 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100824 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +0200825 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +0100826 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
827
828Bugfix
niisatob7d39db2018-06-25 20:44:57 +0900829 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +0900830 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +0100831 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100832 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +0100833 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
834 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +0100835 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
836 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +0100837 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
838 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +0300839 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
840 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100841 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
842 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +0100843 * Added length checks to some TLS parsing functions. Found and fixed by
844 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +0300845 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +0300846 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +0100847 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
848 the `#include` in the header files. Resolves #857
849 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +0100850 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
851 Drozd. #1098
852 * Fix decryption for zero length messages (which contain all padding) when a
853 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
854 such a message was wrongly reported as an invalid record and therefore lead
855 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +0100856 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
857 contributed by Espressif Systems. Fixes #1632
858 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100859 when the request_size argument is set to 0 as stated in the documentation.
860 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +0100861 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +0100862 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +0100863 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +0100864
865Changes
866 * Fail when receiving a TLS alert message with an invalid length, or invalid
867 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
868 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +0100869 when calling with a NULL salt and non-zero salt_len. Contributed by
870 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +0000871 * Change the shebang line in Perl scripts to look up perl in the PATH.
872 Contributed by fbrosson.
873 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +0100874 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +0200875 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
876
877= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +0100878
879Features
880 * Add additional block mode, OFB (Output Feedback), to the AES module and
881 cipher abstraction module.
882 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +0100883 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
884 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +0200885 * Add support for the XTS block cipher mode with AES (AES-XTS).
886 Contributed by Aorimn in pull request #414.
887 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +0100888 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +0100889 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +0100890
891Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +0100892 * Fix the cert_write example to handle certificates signed with elliptic
893 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +0100894 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
895 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +0100896 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +0100897 Reported by rahmanih in #683
898 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
899
Simon Butcherb6a5bff2018-06-18 11:51:36 +0100900Changes
901 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
902 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +0200903 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +0100904 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +0100905
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +0100906= mbed TLS 2.10.0 branch released 2018-06-06
907
908Features
909 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +0200910 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +0000911
912API Changes
913 * Extend the platform module with a util component that contains
914 functionality shared by multiple Mbed TLS modules. At this stage
915 platform_util.h (and its associated platform_util.c) only contain
916 mbedtls_platform_zeroize(), which is a critical function from a security
917 point of view. mbedtls_platform_zeroize() needs to be regularly tested
918 against compilers to ensure that calls to it are not removed from the
919 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +0100920 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +0100921 facilitate testing and maintenance.
922
923Bugfix
924 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +0100925 build to fail. Found by zv-io. Fixes #1651.
926
Moran Pekera64fba42018-02-25 13:29:03 +0200927Changes
928 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +0100929 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +0100930 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +0200931
Simon Butcherf85c90a2017-07-27 15:11:52 +0100932= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +0100933
934Security
935 * Fix an issue in the X.509 module which could lead to a buffer overread
936 during certificate validation. Additionally, the issue could also lead to
937 unnecessary callback checks being made or to some validation checks to be
938 omitted. The overread could be triggered remotely, while the other issues
939 would require a non DER-compliant certificate to be correctly signed by a
940 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
941 luocm. Fixes #825.
942 * Fix the buffer length assertion in the ssl_parse_certificate_request()
943 function which led to an arbitrary overread of the message buffer. The
944 overreads could be caused by receiving a malformed message at the point
945 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -0400946 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +0100947 data is output with the debug data.
948 * Fix a client-side bug in the validation of the server's ciphersuite choice
949 which could potentially lead to the client accepting a ciphersuite it didn't
950 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +0100951 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +0100952 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +0100953
954Features
955 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +0100956 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
957 Suggested and contributed by jkivilin in pull request #394.
958 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +0100959 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +0100960 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
961 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +0100962
963API Changes
964 * Extend the public API with the function of mbedtls_net_poll() to allow user
965 applications to wait for a network context to become ready before reading
966 or writing.
967 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +0200968 a check for whether more more data is pending to be processed in the
969 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +0100970 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +0000971 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +0100972
Gilles Peskine08185402018-03-22 21:50:48 +0100973Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +0100974 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
975 contributed by Brian J Murray and David Brown.
976 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +0100977 in configurations that omit certain hashes or public-key algorithms.
978 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +0200979 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +0100980 #1353
981 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
982 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
983 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -0800984 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +0100985 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -0700986 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +0100987 unable to parse keys which had only the optional parameters field of the
988 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
989 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +0200990 stated in the mbedtls_cipher_update() documentation. Contributed by
991 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +0100992 * Fix overriding and ignoring return values when parsing and writing to
993 a file in pk_sign program. Found by kevlut in #1142.
994 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
995 where data needs to be fetched from the underlying transport in order
996 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +0100997 returned when unexpected messages were being discarded, ignoring that
998 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +0200999 in the internal buffers; these cases led to deadlocks when event-driven
1000 I/O was used. Found and reported by Hubert Mis in #772.
1001 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04001002 function which leads to a potential one byte overread of the message
1003 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001004 * Fix invalid buffer sizes passed to zlib during record compression and
1005 decompression.
1006 * Fix the soversion of libmbedcrypto to match the soversion of the
1007 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01001008 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001009 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
1010
Simon Butcherb03120a2018-04-30 16:40:25 +01001011Changes
1012 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01001013 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
1014 independently by Matthieu Volat and Arne Schwabe.
1015 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00001016 public-key algorithms. Includes contributions by Gert van Dijk.
1017 * Improve negative testing of X.509 parsing.
1018 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01001019 configurations where the feature is disabled. Found and fixed by Gergely
1020 Budai.
1021 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
1022 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01001023 instead incorrectly manipulates the configuration structure directly.
1024 Found and fix submitted by junyeonLEE in #1220.
1025 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02001026 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
1027 without PBES2. Fixed by Marcos Del Sol Vives.
1028 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01001029 for Curve25519 (other curves had it already). Contributed by Nicholas
1030 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01001031 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
1032 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01001033 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001034 Paul Sokolovsky in #1356.
1035 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01001036 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001037 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01001038 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02001039 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02001040 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
1041 by Alexey Skalozub in #405.
1042 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02001043 transmitting more than the required length, return an error. Raised by
1044 Sam O'Connor in #1245.
1045 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01001046 HMAC functions with non-HMAC ciphersuites. Independently contributed
1047 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02001048 * Improve security of RSA key generation by including criteria from
1049 FIPS 186-4. Contributed by Jethro Beekman. #1380
1050 * Declare functions in header files even when an alternative implementation
1051 of the corresponding module is activated by defining the corresponding
1052 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04001053 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001054 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00001055 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01001056
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001057= mbed TLS 2.8.0 branch released 2018-03-16
1058
1059Default behavior changes
1060 * The truncated HMAC extension now conforms to RFC 6066. This means
1061 that when both sides of a TLS connection negotiate the truncated
1062 HMAC extension, Mbed TLS can now interoperate with other
1063 compliant implementations, but this breaks interoperability with
1064 prior versions of Mbed TLS. To restore the old behavior, enable
1065 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
1066 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00001067 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001068
1069Security
1070 * Fix implementation of the truncated HMAC extension. The previous
1071 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01001072 HMAC key of a single, uninterrupted connection (with no
1073 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001074 * Verify results of RSA private key operations to defend
1075 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001076 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
1077 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01001078 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
1079 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00001080 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001081 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
1082
1083Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01001084 * Extend PKCS#8 interface by introducing support for the entire SHA
1085 algorithms family when encrypting private keys using PKCS#5 v2.0.
1086 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01001087 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001088 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00001089 * Add support for public keys encoded in PKCS#1 format. #1122
1090
1091New deprecations
1092 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01001093 MBEDTLS_ZLIB_SUPPORT).
1094
1095Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01001096 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02001097 Fixes #1358.
1098 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01001099 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
1100 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00001101 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01001102 daniel in the Mbed TLS forum. #1351
1103 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
1104 * Fix setting version TLSv1 as minimal version, even if TLS 1
1105 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03001106 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
1107 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03001108 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01001109 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02001110 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01001111 * In test_suite_pk, pass valid parameters when testing for hash length
1112 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01001113 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01001114 by Guido Vranken. #639
1115 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001116 * Fix X509 CRT parsing that would potentially accept an invalid tag when
1117 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001118 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
1119 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01001120 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
1121 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01001122 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
1123 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01001124 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
1125 Found through fuzz testing.
1126
1127Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01001128 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01001129 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01001130 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
1131 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02001132 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01001133 a migration path for those depending on the library's ABI.
1134 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01001135 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001136 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001137
Gilles Peskine28a0c722017-10-17 19:01:38 +02001138= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00001139
1140Security
1141 * Fix a heap corruption issue in the implementation of the truncated HMAC
1142 extension. When the truncated HMAC extension is enabled and CBC is used,
1143 sending a malicious application packet could be used to selectively corrupt
1144 6 bytes on the peer's heap, which could potentially lead to crash or remote
1145 code execution. The issue could be triggered remotely from either side in
1146 both TLS and DTLS. CVE-2018-0488
1147 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
1148 for the key size, which could potentially lead to crash or remote code
1149 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
1150 Qualcomm Technologies Inc. CVE-2018-0487
1151 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
1152 zeros.
1153 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01001154 64 KiB to the address of the SSL buffer and causing a wrap around.
1155 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
1156 default enabled) maximum fragment length extension is disabled in the
1157 config and the application data buffer passed to mbedtls_ssl_write
1158 is larger than the internal message buffer (16384 bytes by default), the
1159 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00001160 application layer can be forced into sending such large packets. The issue
1161 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
1162 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
1163 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01001164 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01001165 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03001166 * Ensure that buffers are cleared after use if they contain sensitive data.
1167 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01001168 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
1169 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001170 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
1171 leaking 1 bit of the private key. Reported by prashantkspatil.
1172 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
1173 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01001174 sake of saving memory, but potentially leading to slight timing
1175 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001176 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01001177 after keypair generation.
1178 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01001179 (server-side). Could result in application crash, but only if an ALPN
1180 name larger than 16 bytes had been configured on the server.
1181 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02001182 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001183 manner.
1184
Gilles Peskinec82fbb42017-12-15 15:01:27 +01001185Features
1186 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02001187 * The selftest program can execute a subset of the tests based on command
1188 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01001189 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00001190 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01001191 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01001192 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03001193 * Add support for alternative implementations of GCM, selected by the
1194 configuration flag MBEDTLS_GCM_ALT.
1195 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03001196 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03001197 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03001198 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001199 with alternative implementation:
1200 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03001201 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03001202 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
1203 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
1204 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00001205 with an alternative implementation:
1206 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00001207 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02001208 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00001209 * Add mechanism to provide alternative implementation of the DHM module.
1210
1211API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00001212 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00001213 independent setup and export of RSA contexts. Most notably,
1214 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
1215 up RSA contexts from partial key material and having them completed to the
1216 needs of the implementation automatically. This allows to setup private RSA
1217 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
1218 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01001219 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
1220 implementations of the RSA interface declared in rsa.h.
1221 * The following functions in the message digest modules (MD2, MD4, MD5,
1222 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
1223 The new functions change the return type from void to int to allow
1224 returning error codes when using MBEDTLS_<MODULE>_ALT.
1225 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01001226 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001227 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03001228 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
1229
Simon Butcher55fc4e02018-02-05 01:09:13 +00001230New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01001231 * Deprecate usage of RSA primitives with non-matching key-type
1232 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00001233 * Direct manipulation of structure fields of RSA contexts is deprecated.
1234 Users are advised to use the extended RSA API instead.
1235 * Deprecate usage of message digest functions that return void
1236 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
1237 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01001238 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
1239 that can return an error code.
1240 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
1241 parameters from RFC 3526 or the newly added parameters from RFC 7919.
1242 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001243 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
1244 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01001245 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001246 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001247 accepting DHM parameters in binary form, matching the new constants.
1248
1249Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01001250 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01001251 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01001252 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03001253 Found by projectgus and Jethro Beekman, #836.
1254 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
1255 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00001256 renegotiated handshakes would only accept signatures using SHA-1
1257 regardless of the peer's preferences, or fail if SHA-1 was disabled.
1258 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02001259 dates on leap years with 100 and 400 intervals are handled correctly. Found
1260 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01001261 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
1262 accepted. Generating these signatures required the private key.
1263 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01001264 Found independently by Florian in the mbed TLS forum and by Mishamax.
1265 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00001266 * Fix variable used before assignment compilation warnings with IAR
1267 toolchain. Found by gkerrien38.
1268 * Fix unchecked return codes from AES, DES and 3DES functions in
1269 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
1270 If a call to one of the functions of the cryptographic primitive modules
1271 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01001272 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
1273 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01001274 * Include configuration file in md.h, to fix compilation warnings.
1275 Reported by aaronmdjones in #1001
1276 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01001277 writing routines that prevented these functions to work with alternative
1278 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01001279 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00001280 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01001281 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00001282 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01001283 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001284 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00001285 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01001286 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01001287 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01001288 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
1289 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03001290 * Add size-checks for record and handshake message content, securing
1291 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01001292 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00001293 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01001294 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
1295 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00001296 * Fix possible memory leaks in mbedtls_gcm_self_test().
1297 * Added missing return code checks in mbedtls_aes_self_test().
1298 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
1299 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01001300 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01001301 beforehand.
1302 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001303 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
1304 Found and fixed by Martijn de Milliano.
1305 * Fix an issue in the cipher decryption with the mode
1306 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01001307 Note, this padding mode is not used by the TLS protocol. Found and fixed by
1308 Micha Kraus.
1309 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
1310 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01001311 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
1312 mbedtls_sha512_init() is called before operating on the relevant context
1313 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00001314 reset it. Found independently by ccli8 on Github.
1315 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01001316 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
1317 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001318
Hanno Becker86e52302017-10-05 09:08:53 +01001319Changes
1320 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00001321 and the message digest. Further, allow enabling/disabling of authority
1322 identifier, subject identifier and basic constraints extensions.
1323 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
1324 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01001325 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01001326 on GitHub.
1327 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01001328 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
1329 undeclared dependency of the RSA module on the ASN.1 module.
1330 * Update all internal usage of deprecated message digest functions to the
1331 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00001332 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01001333 everywhere except some locations in the ssl_tls.c module.
1334 * Improve CTR_DRBG error handling by propagating underlying AES errors.
1335 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01001336 modules where the software implementation can be replaced by a hardware
1337 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001338 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01001339 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02001340
Simon Butcherb060cc22017-07-28 01:04:34 +01001341= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01001342
Simon Butcherf85c90a2017-07-27 15:11:52 +01001343Security
1344 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01001345 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
1346 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01001347 (default: 8) intermediates, even when it was not trusted. This could be
1348 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01001349 (the default), the handshake was correctly aborted).
1350 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01001351 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001352 Found by Laurent Simon.
1353
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01001354Features
1355 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01001356 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01001357 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01001358 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
1359 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001360 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02001361 cryptographic acceleration hardware.
1362
1363API Changes
1364 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01001365 API consistent with mbed TLS 2.5.0. Specifically removed the inline
1366 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01001367 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
1368 by James Cowgill. #978
1369 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01001370 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01001371 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01001372 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02001373 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02001374 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01001375
1376Bugfix
1377 * 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 +02001378 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01001379 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01001380 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
1381 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02001382 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01001383 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01001384 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
1385 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01001386 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01001387 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01001388 * Fix a potential integer overflow in the version verification for DER
1389 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00001390 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001391 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00001392 * Fix potential integer overflow in the version verification for DER
1393 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01001394 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01001395 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01001396 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01001397 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01001398 constructed certificates to bypass the certificate verification check.
1399 * Fix a call to the libc function time() to call the platform abstraction
1400 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02001401 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01001402 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01001403
Simon Butcher3f2557e2017-08-01 18:06:12 +01001404Changes
1405 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01001406 64-bit division. This is useful on embedded platforms where 64-bit division
1407 created a dependency on external libraries. #708
1408 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01001409 accelerator code in the library leaves concurrency handling to the
1410 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01001411 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
1412 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01001413 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01001414 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01001415 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01001416
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001417= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01001418
1419Security
1420 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
1421 The issue could only happen client-side with renegotiation enabled.
1422 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02001423 (if the application layer sent data read from mbedtls_ssl_read()
1424 back to the server or to a third party). Can be triggered remotely.
1425 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02001426 certificate verification. SHA-1 can be turned back on with a compile-time
1427 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02001428 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
1429 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02001430 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01001431 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001432
1433Bugfix
1434 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01001435 valid C and they prevented the test from compiling in Visual Studio 2015
1436 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001437 * Fix insufficient support for signature-hash-algorithm extension,
1438 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02001439 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01001440 when sending the alert failed. The fix makes sure not to hide the error
1441 that triggered the alert.
1442 * Fix SSLv3 renegotiation behaviour and stop processing data received from
1443 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01001444 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01001445 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001446 * Accept empty trusted CA chain in authentication mode
1447 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
1448 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
1449 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
1450 reflect bad EC curves within verification result.
1451 * Fix bug that caused the modular inversion function to accept the invalid
1452 modulus 1 and therefore to hang. Found by blaufish. #641.
1453 * Fix incorrect sign computation in modular exponentiation when the base is
1454 a negative MPI. Previously the result was always negative. Found by Guido
1455 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02001456 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02001457 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001458
1459Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00001460 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01001461 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00001462 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02001463 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01001464 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001465
Janos Follath45182a02017-03-23 10:41:56 +00001466= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01001467
Janos Follath5a1c0e72017-06-16 09:00:07 +01001468Security
1469 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00001470 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
1471 Simon.
1472 * Add exponent blinding to RSA private operations as a countermeasure
1473 against side-channel attacks like the cache attack described in
1474 https://arxiv.org/abs/1702.08719v2.
1475 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01001476 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01001477
1478Features
1479 * Add hardware acceleration support for the Elliptic Curve Point module.
1480 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01001481 replacing the core functions and adding and alternative, module level
1482 replacement support for enabling the extension of the interface.
1483 * Add a new configuration option to 'mbedtls_ssl_config' to enable
1484 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00001485 behaviour has not changed, namely every configured CAs name is included.
1486
1487API Changes
1488 * The following functions in the AES module have been deprecated and replaced
1489 by the functions shown below. The new functions change the return type from
1490 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
1491 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
1492 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001493 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
1494
1495Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01001496 * Remove macros from compat-1.3.h that correspond to deleted items from most
1497 recent versions of the library. Found by Kyle Keen.
1498 * Fixed issue in the Threading module that prevented mutexes from
1499 initialising. Found by sznaider. #667 #843
1500 * Add checks in the PK module for the RSA functions on 64-bit systems.
1501 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01001502 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00001503 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01001504
Janos Follath182013f2016-10-25 10:50:22 +01001505= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00001506
1507Security
1508 * Add checks to prevent signature forgeries for very large messages while
1509 using RSA through the PK module in 64-bit systems. The issue was caused by
1510 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00001511 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
1512 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
1513 * Fixed potential livelock during the parsing of a CRL in PEM format in
1514 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
1515 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01001516 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
1517 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00001518 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00001519 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
1520 Introduced by interoperability fix for #513.
1521 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00001522 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00001523 triggered remotely for example with a maliciously constructed certificate
1524 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00001525 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01001526 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00001527
1528Bugfix
1529 * Fix output certificate verification flags set by x509_crt_verify_top() when
1530 traversing a chain of trusted CA. The issue would cause both flags,
1531 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00001532 set when the verification conditions are not met regardless of the cause.
1533 Found by Harm Verhagen and inestlerode. #665 #561
1534 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00001535 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
1536 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00001537 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00001538 x509_csr.c that are reported when building mbed TLS with a config.h that
1539 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
1540 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
1541 would compare 64 bits of the record counter instead of 48 bits as indicated
1542 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01001543 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01001544 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01001545 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00001546 the input string in PEM format to extract the different components. Found
1547 by Eyal Itkin.
1548 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
1549 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1550 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
1551 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00001552 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
1553 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00001554 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
1555 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00001556 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
1557 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00001558 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
1559 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00001560 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
1561 fix proposed by Guido Vranken. #722
1562 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02001563 Studio 2015 as well as the files themselves, to remove a build warning
1564 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00001565 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
1566 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
1567 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00001568 number to write in hexadecimal is negative and requires an odd number of
1569 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01001570 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00001571 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00001572
1573= mbed TLS 2.4.1 branch released 2016-12-13
1574
1575Changes
1576 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
1577 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01001578 Authentication – October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03001579
Andres AG60dbc932016-09-02 15:23:48 +01001580= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01001581
1582Security
1583 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
1584 with RFC-5116 and could lead to session key recovery in very long TLS
1585 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
1586 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01001587 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01001588 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01001589 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01001590 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03001591 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01001592
1593Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03001594 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
1595 NIST SP 800-38B, RFC-4493 and RFC-4615.
1596 * Added hardware entropy selftest to verify that the hardware entropy source
1597 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01001598 * Added a script to print build environment info for diagnostic use in test
1599 scripts, which is also now called by all.sh.
1600 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01001601 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01001602 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01001603 * Added a configuration file config-no-entropy.h that configures the subset of
1604 library features that do not require an entropy source.
1605 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03001606 to configure the minimum number of bytes for entropy sources using the
1607 mbedtls_hardware_poll() function.
1608
1609Bugfix
1610 * Fix for platform time abstraction to avoid dependency issues where a build
1611 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01001612 configuration consistency checks to check_config.h
1613 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03001614 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
1615 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03001616 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
1617 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01001618 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01001619 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01001620 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01001621 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01001622 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01001623 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01001624 * Fixed pthread implementation to avoid unintended double initialisations
1625 and double frees. Found by Niklas Amnebratt.
1626 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01001627 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
1628 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01001629 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01001630 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01001631 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01001632 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01001633 mbedtls_gcm_finish(). Found by cmiatpaar. #602
1634 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01001635 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01001636 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01001637 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
1638 Found by subramanyam-c. #626
1639 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01001640 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03001641 certificate. Found by teumas. #513
1642 * Fix compilation without MBEDTLS_SELF_TEST enabled.
1643
1644Changes
1645 * Extended test coverage of special cases, and added new timing test suite.
1646 * Removed self-tests from the basic-built-test.sh script, and added all
1647 missing self-tests to the test suites, to ensure self-tests are only
1648 executed once.
1649 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01001650 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01001651 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01001652 * Added optimization for code space for X.509/OID based on configured
1653 features. Contributed by Aviv Palivoda.
1654 * Renamed source file library/net.c to library/net_sockets.c to avoid
1655 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01001656 net.c. For consistency, the corresponding header file, net.h, is marked as
1657 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03001658 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01001659 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01001660
Janos Follathcc4eba72016-02-10 16:25:55 +00001661= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00001662
Janos Follath3218b212016-02-10 16:14:10 +00001663Security
Janos Follathe43b81a2016-02-10 16:25:55 +00001664 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
1665 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01001666 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01001667 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00001668 (not triggerable remotely in (D)TLS).
1669 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00001670 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01001671 SSL/TLS.
1672
1673Features
1674 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01001675 function.
1676
1677Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01001678 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00001679 arguments where the same (in-place doubling). Found and fixed by Janos
1680 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01001681 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01001682 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00001683 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00001684 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
1685 ECDSA was disabled in config.h . The leak didn't occur by default.
1686 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01001687 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00001688 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01001689 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00001690 buffer after DER certificates to be included in the raw representation.
1691 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01001692 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
1693 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01001694 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01001695 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01001696 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01001697 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01001698 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01001699 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
1700
1701Changes
1702 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01001703 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01001704 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
1705 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01001706 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
1707 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01001708 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
1709 ignored, as required by RFC6101.
1710
1711= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01001712
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01001713Security
Simon Butcher00923c12015-12-22 19:04:24 +00001714 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01001715 allocate memory. Only used for certificate generation, not triggerable
1716 remotely in SSL/TLS. Found by Rafał Przywara. #367
1717 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01001718 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00001719 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01001720 https://www.mitls.org/pages/attacks/SLOTH
1721
1722Bugfix
1723 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
1724 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00001725 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00001726 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01001727 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01001728 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02001729 * Fix suboptimal handling of unexpected records that caused interop issues
1730 with some peers over unreliable links. Avoid dropping an entire DTLS
1731 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02001732 drop the record and look at subsequent records (if any are present) in
1733 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00001734
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02001735= mbed TLS 2.2.0 released 2015-11-04
1736
1737Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00001738 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01001739 once and some allocation fails. Cannot be forced remotely. Found by Guido
1740 Vranken, Intelworks.
1741 * Fix potential heap corruption on Windows when
1742 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02001743 triggered remotely. Found by Guido Vranken, Intelworks.
1744 * Fix potential buffer overflow in some asn1_write_xxx() functions.
1745 Cannot be triggered remotely unless you create X.509 certificates based
1746 on untrusted input or write keys of untrusted origin. Found by Guido
1747 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02001748 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01001749 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01001750 Janos Follath. #280 and #319
1751
1752Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01001753 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
1754 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02001755 * Added a key extraction callback to accees the master secret and key
1756 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00001757
1758Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02001759 * Self-signed certificates were not excluded from pathlen counting,
1760 resulting in some valid X.509 being incorrectly rejected. Found and fix
1761 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00001762 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02001763 exchange. Found and fix provided by Chris Hammond. #270
1764 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02001765 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09001766 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
1767 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
1768 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00001769 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01001770 minimum key size for end-entity certificates with RSA keys. Found by
1771 Matthew Page of Scannex Electronics Ltd.
1772 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01001773 Found by Kurt Danielson. #292
1774 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
1775 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01001776 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01001777 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01001778
1779Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01001780 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
1781 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01001782
1783= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02001784
1785Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01001786 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02001787 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01001788 Intelworks.
1789 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
1790 once in the same handhake and mbedtls_ssl_conf_psk() was used.
1791 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01001792 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01001793 * Fix stack buffer overflow in pkcs12 decryption (used by
1794 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
1795 Found by Guido Vranken, Intelworks. Not triggerable remotely.
1796 * Fix potential buffer overflow in mbedtls_mpi_read_string().
1797 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
1798 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02001799 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01001800 require reading a string of close to or larger than 2^62 bytes.
1801 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02001802 on crafted PEM input data. Found and fix provided by Guido Vranken,
1803 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
1804 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01001805 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01001806 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01001807 Intelworks. Not trigerrable remotely in TLS.
1808 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
1809 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01001810 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01001811 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01001812 authentication against a crafted CA cert. Cannot be triggered remotely
1813 unless you allow third parties to pick trust CAs for client auth.
1814 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01001815
1816Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01001817 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01001818 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02001819 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02001820
1821Changes
1822 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
1823 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02001824 * Fixed paths for check_config.h in example config files. (Found by bachp)
1825 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01001826
1827= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02001828
Simon Butchera1a11282015-09-14 21:30:40 +01001829Security
1830 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02001831 signatures. (Found by Florian Weimer, Red Hat.)
1832 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
1833 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01001834 tries to continue the handshake after it failed (a misuse of the API).
1835 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
1836 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02001837
1838Bugfix
1839 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
1840 * Fix off-by-one error in parsing Supported Point Format extension that
1841 caused some handshakes to fail.
1842
1843Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01001844 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02001845 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02001846 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02001847 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02001848 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
1849 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02001850 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02001851 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
1852 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02001853
1854= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02001855
1856Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02001857 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02001858 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02001859
1860Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02001861 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02001862 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
1863 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02001864 * Fix bug when parsing a ServerHello without extensions (found by David
1865 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02001866 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
1867 (found by Benoit Lecocq).
1868 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02001869 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02001870 * Fix compile error with armcc 5 with --gnu option.
1871 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02001872 (found by robotanarchy) (#232).
1873 * Fix bug in Makefile that prevented from installing without building the
1874 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01001875 * Fix missing -static-libgcc when building shared libraries for Windows
1876 with make.
1877 * Fix link error when building shared libraries for Windows with make.
1878 * Fix error when loading libmbedtls.so.
1879 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
1880 be always used (found by dcb314) (#235)
1881 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02001882 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02001883 Fredrik Axelsson) (#257)
1884 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02001885 * Fix memory corruption on client with overlong PSK identity, around
1886 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
1887 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02001888 * Fix unused function warning when using MBEDTLS_MDx_ALT or
1889 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
1890 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01001891
1892Changes
1893 * The PEM parser now accepts a trailing space at end of lines (#226).
1894 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02001895 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01001896 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01001897 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02001898 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02001899 (#220).
1900 * Prepend a "thread identifier" to debug messages (issue pointed out by
1901 Hugo Leisink) (#210).
1902 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
1903 length.
1904
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02001905= mbed TLS 2.0.0 released 2015-07-13
1906
1907Features
1908 * Support for DTLS 1.0 and 1.2 (RFC 6347).
1909 * Ability to override core functions from MDx, SHAx, AES and DES modules
1910 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02001911 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02001912 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02001913 preserve forward secrecy, and allows sharing across multiple contexts.
1914 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02001915 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01001916 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02001917 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01001918 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02001919 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02001920
1921API Changes
1922 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02001923 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01001924 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02001925 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02001926 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02001927 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02001928 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02001929 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02001930 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02001931 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02001932 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02001933 * The following _init() functions that could return errors have
1934 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02001935 should generally be the first function called on this context after init:
1936 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01001937 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02001938 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02001939 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02001940 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
1941 Note that for mbedtls_ssl_setup(), you need to be done setting up the
1942 ssl_config structure before calling it.
1943 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02001944 ssl_set_session() and ssl_set_client_transport_id(), plus
1945 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01001946 (see rename.pl and compat-1.3.h above) and their first argument's type
1947 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02001948 * ssl_set_bio() changed signature (contexts merged, order switched, one
1949 additional callback for read-with-timeout).
1950 * The following functions have been introduced and must be used in callback
1951 implementations (SNI, PSK) instead of their *conf counterparts:
1952 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02001953 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01001954 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02001955 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01001956 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02001957 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
1958 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02001959 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
1960 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02001961 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01001962 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02001963 * mbedtls_ssl_conf_truncated_hmac() now returns void.
1964 * mbedtls_memory_buffer_alloc_init() now returns void.
1965 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01001966 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02001967 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01001968 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
1969 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
1970 * The following functions changed prototype to avoid an in-out length
1971 parameter:
1972 mbedtls_base64_encode()
1973 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02001974 mbedtls_mpi_write_string()
1975 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02001976 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02001977 changed type to "mbedtls_net_context *".
1978 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01001979 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02001980 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02001981 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02001982 ecdsa_write_signature_det() was deprecated.
1983 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01001984 * Last argument of x509_crt_check_key_usage() and
1985 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
1986 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01001987 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02001988 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
1989 strings; use the new *_len variables instead of strlen().
1990 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00001991 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02001992 length parameter to include the terminating null byte for PEM input.
1993 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02001994 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00001995 layer and the memory_buffer_alloc module changed accordingly.
1996 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02001997 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
1998 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02001999 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
2000 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02002001 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002002 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
2003 Their 'port' argument type is changed to a string.
2004 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002005
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02002006Removals
2007 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02002008 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
2009 mbedtls_ecp_muladd().
2010 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02002011 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02002012 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002013 waiting function.
2014 * Removed test DHM parameters from the test certs module.
2015 * Removed the PBKDF2 module (use PKCS5).
2016 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
2017 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
2018 * Removed openssl.h (very partial OpenSSL compatibility layer).
2019 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
2020 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
2021 been removed (compiler is required to support 32-bit operations).
2022 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
2023 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002024 * Removed test program ssl_test, superseded by ssl-opt.sh.
2025 * Removed helper script active-config.pl
2026
2027New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002028 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002029 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002030
2031Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02002032 * Renamed a few headers to include _internal in the name. Those headers are
2033 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002034 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
2035 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01002036 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002037 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
2038 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002039 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002040 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02002041
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002042Default behavior changes
2043 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002044 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
2045 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01002046 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02002047 compile time.
2048 * The default authmode for SSL/TLS clients is now REQUIRED.
2049 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01002050 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002051 custom config.h
2052 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01002053 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02002054 chain verification.
2055 * Negotiation of truncated HMAC is now disabled by default on server too.
2056 * The following functions are now case-sensitive:
2057 mbedtls_cipher_info_from_string()
2058 mbedtls_ecp_curve_info_from_name()
2059 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002060 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002061 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02002062
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02002063Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01002064 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002065 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002066 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002067
2068API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002069 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
2070 new prototype, and mbedtls_ssl_set_read_timeout().
2071 * The following functions now return void:
2072 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02002073 mbedtls_ssl_conf_max_version()
2074 mbedtls_ssl_conf_min_version()
2075 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
2076 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02002077 an example implementation, see mbedtls_timing_delay_context and
2078 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002079 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002080 after a successful net_accept().
2081
2082Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002083 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
2084 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002085 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002086 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
2087
2088= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02002089
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01002090Security
2091 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02002092 extendedKeyUsage on the leaf certificate was lost (results not accessible
2093 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002094 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2095 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02002096
2097Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02002098 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02002099 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02002100 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01002101 * Add support for reading DH parameters with privateValueLength included
2102 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002103 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
2104 * Add support for id-at-uniqueIdentifier in X.509 names.
2105 * Add support for overriding snprintf() (except on Windows) and exit() in
2106 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00002107 * Add an option to use macros instead of function pointers in the platform
2108 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00002109 * Improved Makefiles for Windows targets by fixing library targets and making
2110 cross-compilation easier (thanks to Alon Bar-Lev).
2111 * The benchmark program also prints heap usage for public-key primitives
2112 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
2113 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
2114 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002115 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002116 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002117 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002118 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002119 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
2120 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01002121
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01002122Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01002123 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
2124 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02002125 * Fix bug in entropy.c when THREADING_C is also enabled that caused
2126 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02002127 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
2128 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02002129 * Fix bug in ssl_mail_client when password is longer that username (found
2130 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02002131 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
2132 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02002133 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
2134 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02002135 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02002136 doing it at runtime (using uname) rather that compile time.
2137 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
2138 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02002139 ssl_write() is called before the handshake is finished (introduced in
2140 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01002141 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01002142 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00002143 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
2144 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00002145 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00002146 versions of mingw64 (found by kxjhlele).
2147 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00002148 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00002149 platforms.
2150 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
2151 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00002152 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02002153 in 1.3.10).
2154 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02002155 * Add missing dependency on SHA-256 in some x509 programs (reported by
2156 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002157 * Fix bug related to ssl_set_curves(): the client didn't check that the
2158 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02002159
2160Changes
2161 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02002162 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02002163 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002164 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002165 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00002166 * compat-1.2.h and openssl.h are deprecated.
2167 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002168 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00002169 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00002170 * ssl_set_own_cert() no longer calls pk_check_pair() since the
2171 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00002172 * Move from SHA-1 to SHA-256 in example programs using signatures
2173 (suggested by Thorsten Mühlfelder).
2174 * Remove some unneeded inclusions of header files from the standard library
2175 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002176 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02002177 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01002178 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002179
2180= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00002181Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002182 * NULL pointer dereference in the buffer-based allocator when the buffer is
2183 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002184 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002185 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002186 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002187 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002188 client certificate) (found using Codenomicon Defensics).
2189 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
2190 (TLS server is not affected if it doesn't ask for a client certificate)
2191 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002192 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00002193 (TLS server is not affected if it doesn't ask for a client certificate)
2194 (found using Codenomicon Defensics).
2195 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002196 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002197 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002198
2199Features
2200 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002201 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01002202 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01002203 * Add function pk_check_pair() to test if public and private keys match.
2204 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01002205 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01002206 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02002207 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01002208 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01002209 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
2210 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002211 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01002212 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00002213 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
2214 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002215 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002216 ciphersuite/certificate.
2217
2218Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01002219 * Stack buffer overflow if ctr_drbg_update() is called with too large
2220 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002221 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
2222 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002223 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01002224 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01002225 by Julian Ospald).
2226 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00002227 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
2228 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00002229 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00002230 Peter Vaskovic).
2231 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00002232 * ssl_get_verify_result() now works even if the handshake was aborted due
2233 to a failed verification (found by Fredrik Axelsson).
2234 * Skip writing and parsing signature_algorithm extension if none of the
2235 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00002236 issue with some servers when a zero-length extension was sent. (Reported
2237 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002238 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01002239 (found by Hendrik van den Boogaard).
2240
2241Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01002242 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002243 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01002244 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01002245 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01002246 * Forbid repeated extensions in X.509 certificates.
2247 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01002248 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002249 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01002250 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01002251 * It is now possible to disable negotiation of truncated HMAC server-side
2252 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00002253 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002254 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02002255 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002256
2257= PolarSSL 1.3.9 released 2014-10-20
2258Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002259 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02002260 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
2261 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02002262 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02002263 (found using Codenomicon Defensics).
2264 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002265 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002266 Defensics).
2267
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02002268Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02002269 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02002270 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02002271 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02002272 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
2273 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02002274 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002275 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
2276 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02002277 * ssl_read() could return non-application data records on server while
2278 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02002279 * Server-initiated renegotiation would fail with non-blocking I/O if the
2280 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02002281 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02002282 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02002283 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02002284 * x509_crt_parse() did not increase total_failed on PEM error
2285 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002286 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002287 Vialletelle).
2288
2289Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02002290 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
2291 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02002292 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
2293 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002294 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
2295 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02002296 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2297 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02002298 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002299 RSA keys.
2300 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002301 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02002302 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02002303
2304= PolarSSL 1.3.8 released 2014-07-11
2305Security
2306 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2307 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02002308 when a GCM suite was chosen.
2309
2310Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02002311 * Add CCM module and cipher mode to Cipher Layer
2312 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02002313 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02002314 modules (certificates, CRLs and CSRs).
2315 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02002316 * Add example config.h for PSK with CCM, optimized for low RAM usage.
2317 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02002318 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
2319 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02002320 * Add server-side enforcement of sent renegotiation requests
2321 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02002322 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02002323 ciphersuites to use and save some memory if the list is small.
2324
2325Changes
Paul Bakker34617722014-06-13 17:20:13 +02002326 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
2327 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02002328 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02002329 against unwanted compiler optimizations
2330 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02002331 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
2332 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02002333 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02002334 usage pattern
2335
Paul Bakker1ebc0c52014-05-22 15:47:58 +02002336Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02002337 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02002338 * Enforce alignment in the buffer allocator even if buffer is not aligned
2339 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02002340 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2341 size (found by TrustInSoft)
2342 * Fix WSAStartup() return value check (found by Peter Vaskovic)
2343 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02002344 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002345 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02002346 * Fix DER output of gen_key app (found by Gergely Budai)
2347 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002348 use with some ciphersuites and versions (RC4 in all versions, CBC with
2349 versions < TLS 1.1).
2350 * Very large records using more than 224 bytes of padding were incorrectly
2351 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02002352 * Very large records using less padding could cause a buffer overread of up
2353 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02002354 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
2355 been removed in 1.3.6.)
2356 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07002357 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02002358 1.3.6.)
2359 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02002360 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2361 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02002362 * Fix off-by-one error in parsing Supported Point Format extension that
2363 caused some handshakes to fail.
2364 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02002365 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02002366 (Failure rate <= 1/255 with common DHM moduli.)
2367 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02002368 * Fix base64_decode() to return and check length correctly (in case of
2369 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02002370 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02002371 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02002372
Paul Bakkerc73079a2014-04-25 16:34:30 +02002373= PolarSSL 1.3.7 released on 2014-05-02
2374Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02002375 * debug_set_log_mode() added to determine raw or full logging
2376 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02002377 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02002378 run-time
2379
2380Changes
Paul Bakker92478c32014-04-25 15:18:34 +02002381 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02002382 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02002383 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02002384 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02002385 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02002386 * Ciphersuites based on RC4 now have the lowest priority by default
2387
2388Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02002389 * Only iterate over actual certificates in ssl_write_certificate_request()
2390 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02002391 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02002392 Karger)
2393 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02002394 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
2395 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02002396 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02002397 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02002398 * rsa_check_pubkey() now allows an E up to N
2399 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02002400 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02002401 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00002402 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07002403 * Some parts of ssl_tls.c were compiled even when the module was disabled.
2404 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02002405 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02002406 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002407
Paul Bakker27e36d32014-04-08 12:33:37 +02002408= PolarSSL 1.3.6 released on 2014-04-11
2409
Paul Bakker1cfc4582014-04-09 15:25:13 +02002410Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002411 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02002412 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02002413 * Enable verification of the keyUsage extension for CA and leaf
2414 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02002415 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02002416 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
2417
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02002418Changes
2419 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02002420 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02002421 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02002422 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002423 * Reject certificates with times not in UTC, per RFC 5280.
2424
2425Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02002426 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
2427 (Found by Watson Ladd.)
2428 * The notAfter date of some certificates was no longer checked since 1.3.5.
2429 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02002430 certificate. If the user-supplied chain contains only one certificates,
2431 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02002432 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002433 TrustInSoft)
2434
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01002435Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02002436 * The length of various ClientKeyExchange messages was not properly checked.
2437 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02002438 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02002439 calculation of RR.
2440 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02002441 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
2442 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07002443 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
2444 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01002445 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
2446 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01002447 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02002448 error if the output buffer was just 1 byte too small.
2449 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02002450 * Calling pk_debug() on an RSA-alt key would segfault.
2451 * 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 +02002452 * Potential buffer overwrite in pem_write_buffer() because of low length
2453 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01002454 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01002455 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01002456
2457= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002458Features
Paul Bakker6a28e722014-02-06 13:41:55 +01002459 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01002460 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01002461 * Single Platform compatilibity layer (for memory / printf / fprintf)
2462 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01002463 * Ability to force the entropy module to use SHA-256 as its basis
2464 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01002465 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01002466 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01002467 * Support for reading EC keys that use SpecifiedECDomain in some cases.
2468 * Entropy module now supports seed writing and reading
2469
Paul Bakker47703a02014-02-06 15:01:20 +01002470Changes
2471 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01002472 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01002473 now thread-safe if POLARSSL_THREADING_C defined
2474 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01002475 * Work around a bug of the version of Clang shipped by Apple with Mavericks
2476 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002477 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01002478 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01002479 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002480 * Improvements to tests/Makefile, contributed by Oden Eriksson.
2481
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01002482Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002483 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01002484 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01002485 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002486 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01002487 * Forbid sequence number wrapping
2488 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01002489 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01002490 TrustInSoft)
2491
2492Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01002493 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01002494 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01002495 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01002496 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01002497 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01002498 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10002499 * Fixed dependency issues in test suite
2500 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002501 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
2502 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01002503 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002504 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01002505 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002506 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01002507 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01002508 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01002509 * ssl_srv was leaking memory when client presented a timed out ticket
2510 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01002511 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
2512 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01002513 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01002514 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01002515 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01002516 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01002517
Paul Bakker0ac99ca2014-01-22 13:08:44 +01002518= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01002519Features
Paul Bakker556efba2014-01-24 15:38:12 +01002520 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01002521 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01002522 * Support for AES CFB8 mode
2523 * Support for deterministic ECDSA (RFC 6979)
2524
2525Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01002526 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01002527 * Replaced expired test certificate
2528 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01002529 * net module handles timeouts on blocking sockets better (found by Tilman
2530 Sauerbeck)
2531 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01002532
2533Security
Paul Bakker3eb96732014-01-22 13:08:19 +01002534 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01002535 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01002536
2537= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01002538Features
2539 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01002540 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01002541 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01002542 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01002543 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01002544 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01002545 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01002546 * SSL Pthread-based server example added (ssl_pthread_server)
2547
2548Changes
2549 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01002550 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01002551 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01002552 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01002553 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01002554 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01002555 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01002556 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002557 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01002558
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002559Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01002560 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01002561 * Fixed X.509 hostname comparison (with non-regular characters)
2562 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01002563 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01002564 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01002565 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01002566 * Memory leak in benchmark application
2567 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01002568 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
2569 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01002570 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01002571 ssl_write_certificate() (found by TrustInSoft)
2572
2573Security
2574 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01002575 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01002576
2577= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01002578Features
Paul Bakker16421222013-10-28 14:37:09 +01002579 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01002580 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01002581 * Support for Camellia-GCM mode and ciphersuites
2582
Paul Bakkere1121b62013-10-31 14:37:37 +01002583Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01002584 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01002585 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01002586 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01002587 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01002588
Paul Bakker677377f2013-10-28 12:54:26 +01002589Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01002590 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01002591 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01002592 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01002593 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01002594 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01002595 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01002596 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01002597 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02002598 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02002599
2600= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02002601Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02002602 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02002603 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02002604 * Support for RSA-PSK key-exchange and ciphersuites
2605
Paul Bakker16770332013-10-11 09:59:44 +02002606Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02002607 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02002608 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02002609 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
2610 * config.h is more script-friendly
2611
2612Bugfix
2613 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02002614 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02002615 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02002616 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02002617 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02002618 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02002619 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02002620 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01002621
2622= PolarSSL 1.3.0 released on 2013-10-01
2623Features
2624 * Elliptic Curve Cryptography module added
2625 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02002626 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
2627 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02002628 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02002629 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02002630 * Ability to specify allowed ciphersuites based on the protocol version.
2631 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02002632 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02002633 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02002634 * Threading abstraction layer added (dummy / pthread / alternate)
2635 * Public Key abstraction layer added
2636 * Parsing Elliptic Curve keys
2637 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02002638 * Support for max_fragment_length extension (RFC 6066)
2639 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02002640 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02002641 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
2642 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02002643 * Certificate Request (CSR) generation with extensions (key_usage,
2644 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02002645 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02002646 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00002647 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01002648 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01002649 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02002650
2651Changes
Paul Bakker68884e32013-01-07 18:20:04 +01002652 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
2653 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01002654 * Introduced separate SSL Ciphersuites module that is based on
2655 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02002656 * Internals for SSL module adapted to have separate IV pointer that is
2657 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02002658 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02002659 prototypes for the RSA sign and verify functions changed as a result
2660 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02002661 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02002662 and maximum protocol version
2663 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02002664 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02002665 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02002666 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
2667 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02002668 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02002669 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
2670 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01002671 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02002672 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02002673
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02002674Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02002675 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02002676 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02002677 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02002678 * Fixed file descriptor leaks
2679
2680Security
2681 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02002682 (found by Cyril Arnaud and Pierre-Alain Fouque)
2683
2684
2685= Version 1.2.14 released 2015-05-??
2686
2687Security
2688 * Fix potential invalid memory read in the server, that allows a client to
2689 crash it remotely (found by Caj Larsson).
2690 * Fix potential invalid memory read in certificate parsing, that allows a
2691 client to crash the server remotely if client authentication is enabled
2692 (found using Codenomicon Defensics).
2693 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2694 https://dl.acm.org/citation.cfm?id=2714625
2695
2696Bugfix
2697 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
2698 * Fix hardclock() (only used in the benchmarking program) with some
2699 versions of mingw64 (found by kxjhlele).
2700 * Fix warnings from mingw64 in timing.c (found by kxjklele).
2701 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
2702 platforms (found with Coverity Scan).
2703
2704= Version 1.2.13 released 2015-02-16
2705Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
2706 this will be made in the 1.2 branch at this point.
2707
2708Security
2709 * Fix remotely-triggerable uninitialised pointer dereference caused by
2710 crafted X.509 certificate (TLS server is not affected if it doesn't ask
2711 for a client certificate) (found using Codenomicon Defensics).
2712 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
2713 (TLS server is not affected if it doesn't ask for a client certificate)
2714 (found using Codenomicon Defensics).
2715 * Fix potential stack overflow while parsing crafted X.509 certificates
2716 (TLS server is not affected if it doesn't ask for a client certificate)
2717 found using Codenomicon Defensics).
2718 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
2719 (TLS server is not affected if it doesn't ask for a client certificate).
2720
2721Bugfix
2722 * Fix potential undefined behaviour in Camellia.
2723 * Fix memory leaks in PKCS#5 and PKCS#12.
2724 * Stack buffer overflow if ctr_drbg_update() is called with too large
2725 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
2726 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
2727 in 1.2.12).
2728 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
2729 Peter Vaskovic).
2730 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
2731 * ssl_get_verify_result() now works even if the handshake was aborted due
2732 to a failed verification (found by Fredrik Axelsson).
2733 * Skip writing and parsing signature_algorithm extension if none of the
2734 key exchanges enabled needs certificates. This fixes a possible interop
2735 issue with some servers when a zero-length extension was sent. (Reported
2736 by Peter Dettman.)
2737 * On a 0-length input, base64_encode() did not correctly set output length
2738 (found by Hendrik van den Boogaard).
2739
2740Changes
2741 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
2742 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02002743 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
2744 length of an X.509 verification chain (default = 8).
2745= Version 1.2.12 released 2014-10-24
2746
2747Security
2748 * Remotely-triggerable memory leak when parsing some X.509 certificates
2749 (server is not affected if it doesn't ask for a client certificate).
2750 (Found using Codenomicon Defensics.)
2751
2752Bugfix
2753 * Fix potential bad read in parsing ServerHello (found by Adrien
2754 Vialletelle).
2755 * ssl_close_notify() could send more than one message in some circumstances
2756 with non-blocking I/O.
2757 * x509_crt_parse() did not increase total_failed on PEM error
2758 * Fix compiler warnings on iOS (found by Sander Niemeijer).
2759 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
2760 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
2761 * ssl_read() could return non-application data records on server while
2762 renegotation was pending, and on client when a HelloRequest was received.
2763 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
2764
2765Changes
2766 * X.509 certificates with more than one AttributeTypeAndValue per
2767 RelativeDistinguishedName are not accepted any more.
2768 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2769 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02002770 * Accept spaces at end of line or end of buffer in base64_decode().
2771
2772= Version 1.2.11 released 2014-07-11
2773Features
2774 * Entropy module now supports seed writing and reading
2775
2776Changes
2777 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
2778 * Improvements to the CMake build system, contributed by Julian Ospald.
2779 * Work around a bug of the version of Clang shipped by Apple with Mavericks
2780 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
2781 * Improvements to tests/Makefile, contributed by Oden Eriksson.
2782 * Use UTC time to check certificate validity.
2783 * Reject certificates with times not in UTC, per RFC 5280.
2784 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
2785 against unwanted compiler optimizations
2786
2787Security
2788 * Forbid change of server certificate during renegotiation to prevent
2789 "triple handshake" attack when authentication mode is optional (the
2790 attack was already impossible when authentication is required).
2791 * Check notBefore timestamp of certificates and CRLs from the future.
2792 * Forbid sequence number wrapping
2793 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
2794 TrustInSoft)
2795 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2796 It was possible to crash the server (and client) using crafted messages
2797 when a GCM suite was chosen.
2798
2799Bugfix
2800 * Fixed X.509 hostname comparison (with non-regular characters)
2801 * SSL now gracefully handles missing RNG
2802 * crypt_and_hash app checks MAC before final decryption
2803 * Fixed x509_crt_parse_path() bug on Windows platforms
2804 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
2805 TrustInSoft)
2806 * Fixed potential overflow in certificate size verification in
2807 ssl_write_certificate() (found by TrustInSoft)
2808 * Fix ASM format in bn_mul.h
2809 * Potential memory leak in bignum_selftest()
2810 * Replaced expired test certificate
2811 * ssl_mail_client now terminates lines with CRLF, instead of LF
2812 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
2813 * Fixed testing with out-of-source builds using cmake
2814 * Fixed version-major intolerance in server
2815 * Fixed CMake symlinking on out-of-source builds
2816 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
2817 Alex Wilson.)
2818 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
2819 out_ctr failed
2820 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
2821 of one of them failed
2822 * x509_get_current_time() uses localtime_r() to prevent thread issues
2823 * Some example server programs were not sending the close_notify alert.
2824 * Potential memory leak in mpi_exp_mod() when error occurs during
2825 calculation of RR.
2826 * Improve interoperability by not writing extension length in ClientHello
2827 when no extensions are present (found by Matthew Page)
2828 * rsa_check_pubkey() now allows an E up to N
2829 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
2830 * mpi_fill_random() was creating numbers larger than requested on
2831 big-endian platform when size was not an integer number of limbs
2832 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
2833 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2834 size (found by TrustInSoft)
2835 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
2836 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2837 interpret semicolons as comment delimiters (found by Barry K. Nathan).
2838 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
2839 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02002840 tight buffers)
2841
2842= Version 1.2.10 released 2013-10-07
2843Changes
2844 * Changed RSA blinding to a slower but thread-safe version
2845
2846Bugfix
2847 * Fixed memory leak in RSA as a result of introduction of blinding
2848 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02002849 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02002850
2851= Version 1.2.9 released 2013-10-01
2852Changes
2853 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
2854
2855Bugfix
2856 * Fixed potential memory leak when failing to resume a session
2857 * Fixed potential file descriptor leaks (found by Remi Gacogne)
2858 * Minor fixes
2859
2860Security
2861 * Fixed potential heap buffer overflow on large hostname setting
2862 * Fixed potential negative value misinterpretation in load_file()
2863 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02002864 (found by Cyril Arnaud and Pierre-Alain Fouque)
2865
2866= Version 1.2.8 released 2013-06-19
2867Features
2868 * Parsing of PKCS#8 encrypted private key files
2869 * PKCS#12 PBE and derivation functions
2870 * Centralized module option values in config.h to allow user-defined
2871 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
2872
2873Changes
2874 * HAVEGE random generator disabled by default
2875 * Internally split up x509parse_key() into a (PEM) handler function
2876 and specific DER parser functions for the PKCS#1 and unencrypted
2877 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00002878 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02002879 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
2880 config.h)
2881 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
2882 old PBKDF2 module
2883
2884Bugfix
2885 * Secure renegotiation extension should only be sent in case client
2886 supports secure renegotiation
2887 * Fixed offset for cert_type list in ssl_parse_certificate_request()
2888 * Fixed const correctness issues that have no impact on the ABI
2889 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00002890 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02002891 instead of the x509parse_crt() wrapper that can also parse PEM
2892 certificates
2893 * x509parse_crtpath() is now reentrant and uses more portable stat()
2894 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
2895 * Fixed values for 2-key Triple DES in cipher layer
2896 * ssl_write_certificate_request() can handle empty ca_chain
2897
2898Security
2899 * A possible DoS during the SSL Handshake, due to faulty parsing of
2900 PEM-encoded certificates has been fixed (found by Jack Lloyd)
2901
2902= Version 1.2.7 released 2013-04-13
2903Features
2904 * Ability to specify allowed ciphersuites based on the protocol version.
2905
2906Changes
2907 * Default Blowfish keysize is now 128-bits
2908 * Test suites made smaller to accommodate Raspberry Pi
2909
2910Bugfix
2911 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01002912 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01002913
2914= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01002915Bugfix
2916 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01002917 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01002918 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01002919 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01002920 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01002921 * Fixed assembly code for ARM (Thumb and regular) for some compilers
2922
2923Changes
2924 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01002925 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
2926 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01002927 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
2928 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01002929 * Re-added handling for SSLv2 Client Hello when the define
2930 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01002931 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01002932 information (not the entire chain)
2933
2934Security
Paul Bakker8804f692013-02-28 18:06:26 +01002935 * Removed further timing differences during SSL message decryption in
2936 ssl_decrypt_buf()
2937 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01002938 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01002939 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01002940
2941= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01002942Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01002943 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01002944 * Debug messages about padding errors during SSL message decryption are
2945 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01002946 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01002947 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01002948 POLARSSL_SSL_ALL_ALERT_MESSAGES
2949
2950Security
2951 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01002952 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01002953
Paul Bakker68884e32013-01-07 18:20:04 +01002954= Version 1.2.4 released 2013-01-25
2955Changes
Paul Bakker1961b702013-01-25 14:49:24 +01002956 * More advanced SSL ciphersuite representation and moved to more dynamic
2957 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01002958 * Added ssl_handshake_step() to allow single stepping the handshake process
2959
Paul Bakker21dca692013-01-03 11:41:08 +01002960Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01002961 * Memory leak when using RSA_PKCS_V21 operations fixed
2962 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01002963 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01002964 without DN list
2965
2966= Version 1.2.3 released 2012-11-26
2967Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01002968 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01002969
2970= Version 1.2.2 released 2012-11-24
2971Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01002972 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01002973 data
Paul Bakker7c90da92012-11-23 14:02:40 +01002974 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01002975
2976Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01002977 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01002978 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00002979
2980= Version 1.2.1 released 2012-11-20
2981Changes
2982 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00002983 bottom-up (Peer cert depth is 0)
2984
Paul Bakkerd9374b02012-11-02 11:02:58 +00002985Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00002986 * Fixes for MSVC6
2987 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01002988 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
2989 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00002990 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00002991 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00002992 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00002993
2994= Version 1.2.0 released 2012-10-31
2995Features
2996 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00002997 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
2998 default!
2999 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00003000 * Added support for multi-domain certificates through the X509 Subject
3001 Alternative Name extension
3002 * Added preliminary ASN.1 buffer writing support
3003 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00003004 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00003005 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00003006 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00003007 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00003008 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003009 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003010 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00003011 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00003012 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00003013 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00003014 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00003015 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00003016 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00003017 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00003018 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00003019 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00003020 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00003021 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00003022 * Added option to add minimum accepted SSL/TLS protocol version
3023
Paul Bakker048d04e2012-02-12 17:31:04 +00003024Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00003025 * Removed redundant POLARSSL_DEBUG_MSG define
3026 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00003027 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00003028 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00003029 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00003030 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
3031 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00003032 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00003033 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00003034 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
3035 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00003036 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00003037 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00003038 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00003039 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00003040 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00003041
3042Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00003043 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00003044 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00003045 * Fixed potential heap corruption in x509_name allocation
3046 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003047 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00003048 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00003049 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00003050 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00003051 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00003052 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00003053 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00003054 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00003055 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00003056 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00003057
3058Security
Paul Bakker452d5322012-04-05 12:07:34 +00003059 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003060 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02003061
3062= Version 1.1.8 released on 2013-10-01
3063Bugfix
3064 * Fixed potential memory leak when failing to resume a session
3065 * Fixed potential file descriptor leaks
3066
3067Security
3068 * Potential buffer-overflow for ssl_read_record() (independently found by
3069 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
3070 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02003071 * Potential heap buffer overflow on large hostname setting
3072
3073= Version 1.1.7 released on 2013-06-19
3074Changes
3075 * HAVEGE random generator disabled by default
3076
3077Bugfix
3078 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003079 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02003080 instead of the x509parse_crt() wrapper that can also parse PEM
3081 certificates
3082 * Fixed values for 2-key Triple DES in cipher layer
3083 * ssl_write_certificate_request() can handle empty ca_chain
3084
3085Security
3086 * A possible DoS during the SSL Handshake, due to faulty parsing of
3087 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3088
3089= Version 1.1.6 released on 2013-03-11
3090Bugfix
3091 * Fixed net_bind() for specified IP addresses on little endian systems
3092
3093Changes
3094 * Allow enabling of dummy error_strerror() to support some use-cases
3095 * Debug messages about padding errors during SSL message decryption are
3096 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
3097
3098Security
3099 * Removed timing differences during SSL message decryption in
3100 ssl_decrypt_buf()
3101 * Removed timing differences due to bad padding from
3102 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01003103 operations
3104
3105= Version 1.1.5 released on 2013-01-16
3106Bugfix
3107 * Fixed MPI assembly for SPARC64 platform
3108 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
3109 * mpi_add_abs() now correctly handles adding short numbers to long numbers
3110 with carry rollover
3111 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
3112 * Prevent reading over buffer boundaries on X509 certificate parsing
3113 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
3114 #52)
3115 * Fixed possible segfault in mpi_shift_r() (found by Manuel
3116 Pégourié-Gonnard)
3117 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3118 Pégourié-Gonnard)
3119 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
3120 * Memory leak when using RSA_PKCS_V21 operations fixed
3121 * Handle encryption with private key and decryption with public key as per
3122 RFC 2313
3123 * Fixes for MSVC6
3124
3125Security
3126 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00003127 Vanderbeken)
3128
3129= Version 1.1.4 released on 2012-05-31
3130Bugfix
3131 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
3132 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00003133 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
3134
3135= Version 1.1.3 released on 2012-04-29
3136Bugfix
3137 * Fixed random MPI generation to not generate more size than requested.
3138
3139= Version 1.1.2 released on 2012-04-26
3140Bugfix
3141 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
3142 Hui Dong)
3143
3144Security
3145 * Fixed potential memory corruption on miscrafted client messages (found by
3146 Frama-C team at CEA LIST)
3147 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00003148 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003149
3150= Version 1.1.1 released on 2012-01-23
3151Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00003152 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00003153 (Closes ticket #47, found by Hugo Leisink)
3154 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00003155 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00003156 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00003157
3158= Version 1.1.0 released on 2011-12-22
3159Features
Darryl Green11999bb2018-03-13 15:22:58 +00003160 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00003161 SSL contexts without needing to set all non-connection-specific
3162 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00003163 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00003164 supported version to a server to help buggy server implementations.
3165 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00003166 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00003167 introspection functions (Closes ticket #40)
3168 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00003169 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00003170 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003171 entropy sources
3172
Paul Bakkerd246ed32011-10-06 13:18:27 +00003173Changes
3174 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00003175 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00003176 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00003177 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00003178 * Added an EXPLICIT tag number parameter to x509_get_ext()
3179 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00003180 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
3181 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00003182 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00003183 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00003184 * Loads of minimal changes to better support WINCE as a build target
3185 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00003186 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
3187 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00003188 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
3189 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01003190 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00003191 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00003192 a consequence in library code and programs
3193 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01003194 * Added permissive certificate parsing to x509parse_crt() and
3195 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00003196 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003197 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003198 * All error codes are now negative. Even on mermory failures and IO errors.
3199
3200Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00003201 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
3202 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00003203 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
3204 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00003205 * Allowed X509 key usage parsing to accept 4 byte values instead of the
3206 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00003207 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
3208 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00003209 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00003210 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00003211 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00003212 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003213 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00003214 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00003215
3216= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00003217Features
Paul Bakker343a8702011-06-09 14:27:58 +00003218 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00003219 * Added rsa_encrypt and rsa_decrypt simple example programs.
3220
3221Changes
3222 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00003223 codes instead of integers
3224
3225Bugfix
3226 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00003227 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003228
3229= Version 0.99-pre5 released on 2011-05-26
3230Features
Paul Bakkera35aa542013-03-06 17:06:21 +01003231 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00003232 (AES CTR, Camellia CTR, XTEA CBC) including the option to
3233 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00003234 * Functions requiring File System functions can now be disabled
3235 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00003236 * A error_strerror function() has been added to translate between
3237 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00003238 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003239 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00003240 * Added ssl_mail_client and ssl_fork_server as example programs.
3241
3242Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003243 * Major argument / variable rewrite. Introduced use of size_t
3244 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00003245 better unsigned / signed use. Renamed internal bigint types
3246 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00003247 * mpi_init() and mpi_free() now only accept a single MPI
3248 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01003249 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00003250 is now done with a PLUS instead of an OR as error codes
3251 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01003252 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
3253 net_recv() now returns 0 on EOF instead of
3254 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
3255 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00003256 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
3257 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01003258 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00003259 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00003260 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00003261
3262= Version 0.99-pre4 released on 2011-04-01
3263Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00003264 * Added support for PKCS#1 v2.1 encoding and thus support
3265 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00003266 * Reading of Public Key files incorporated into default x509
3267 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00003268 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003269 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01003270
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003271Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003272 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00003273 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01003274 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003275 does not zeroize memory in advance anymore. Use rsa_init()
3276 before parsing a key or keyfile!
3277
3278Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01003279 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00003280 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
3281 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00003282 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
3283 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003284 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00003285 length salt lengths
3286
Paul Bakker96743fc2011-02-12 14:30:57 +00003287= Version 0.99-pre3 released on 2011-02-28
3288This release replaces version 0.99-pre2 which had possible copyright issues.
3289Features
Paul Bakkera9507c02011-02-12 15:27:28 +00003290 * Parsing PEM private keys encrypted with DES and AES
3291 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00003292 * Added crl_app program to allow easy reading and
3293 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01003294
Paul Bakker96743fc2011-02-12 14:30:57 +00003295Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01003296 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00003297 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00003298 systems only using DER encoding
3299
3300Bugfixes
3301 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00003302 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00003303 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003304 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003305 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003306 certificates (found by Mads Kiilerich)
3307 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01003308 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00003309 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00003310 found by Boris Krasnovskiy)
3311
3312Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01003313 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00003314 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00003315 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00003316
Paul Bakkerb63b0af2011-01-13 17:54:59 +00003317= Version 0.99-pre1 released on 2011-01-30
3318Features
Paul Bakker1b57b062011-01-06 15:48:19 +00003319Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00003320 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00003321 * Added reading of DHM context from memory and file
3322 * Improved X509 certificate parsing to include extended
3323 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00003324 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00003325 against the available CRLs
3326 * Detection for DES weak keys and parity bits added
3327 * Improvements to support integration in other
3328 applications:
3329 + Added generic message digest and cipher wrapper
3330 + Improved information about current capabilities,
3331 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00003332 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00003333 verification to allow external blacklisting
3334 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00003335 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00003336 libpkcs11-helper library
3337
3338Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00003339 * x509parse_time_expired() checks time in addition to
3340 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01003341 * The ciphers member of ssl_context and the cipher member
3342 of ssl_session have been renamed to ciphersuites and
3343 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00003344 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00003345 altogether
3346
3347= Version 0.14.0 released on 2010-08-16
3348Features
3349 * Added support for SSL_EDH_RSA_AES_128_SHA and
3350 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
3351 * Added compile-time and run-time version information
3352 * Expanded ssl_client2 arguments for more flexibility
3353 * Added support for TLS v1.1
3354
3355Changes
3356 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01003357 * Removed dependency on rand() in rsa_pkcs1_encrypt().
3358 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00003359 changed the prototype of rsa_pkcs1_encrypt(),
3360 rsa_init() and rsa_gen_key().
3361 * Some SSL defines were renamed in order to avoid
3362 future confusion
3363
3364Bug fixes
3365 * Fixed CMake out of source build for tests (found by
3366 kkert)
3367 * rsa_check_private() now supports PKCS1v2 keys as well
3368 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
3369 generator
3370
3371= Version 0.13.1 released on 2010-03-24
3372Bug fixes
3373 * Fixed Makefile in library that was mistakenly merged
3374 * Added missing const string fixes
3375
3376= Version 0.13.0 released on 2010-03-21
3377Features
3378 * Added option parsing for host and port selection to
3379 ssl_client2
3380 * Added support for GeneralizedTime in X509 parsing
3381 * Added cert_app program to allow easy reading and
3382 printing of X509 certificates from file or SSL
3383 connection.
3384
3385Changes
3386 * Added const correctness for main code base
3387 * X509 signature algorithm determination is now
3388 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01003389 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00003390 identical interface (returning int result values)
3391 * Changed ARC4 to use separate input/output buffer
3392 * Added reset function for HMAC context as speed-up
3393 for specific use-cases
3394
3395Bug fixes
3396 * Fixed bug resulting in failure to send the last
3397 certificate in the chain in ssl_write_certificate() and
3398 ssl_write_certificate_request() (found by fatbob)
3399 * Added small fixes for compiler warnings on a Mac
3400 (found by Frank de Brabander)
3401 * Fixed algorithmic bug in mpi_is_prime() (found by
3402 Smbat Tonoyan)
3403
3404= Version 0.12.1 released on 2009-10-04
3405Changes
3406 * Coverage test definitions now support 'depends_on'
3407 tagging system.
3408 * Tests requiring specific hashing algorithms now honor
3409 the defines.
3410
3411Bug fixes
3412 * Changed typo in #ifdef in x509parse.c (found
3413 by Eduardo)
3414
3415= Version 0.12.0 released on 2009-07-28
3416Features
3417 * Added CMake makefiles as alternative to regular Makefiles.
3418 * Added preliminary Code Coverage tests for AES, ARC4,
3419 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
3420 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
3421 and X509parse.
3422
3423Changes
3424 * Error codes are not (necessarily) negative. Keep
3425 this is mind when checking for errors.
3426 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
3427 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
3428 * Changed interface for AES and Camellia setkey functions
3429 to indicate invalid key lengths.
3430
3431Bug fixes
3432 * Fixed include location of endian.h on FreeBSD (found by
3433 Gabriel)
3434 * Fixed include location of endian.h and name clash on
3435 Apples (found by Martin van Hensbergen)
3436 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01003437 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00003438 (found by code coverage tests)
3439 * Prevented use of long long in bignum if
3440 POLARSSL_HAVE_LONGLONG not defined (found by Giles
3441 Bathgate).
3442 * Fixed incorrect handling of negative strings in
3443 mpi_read_string() (found by code coverage tests).
3444 * Fixed segfault on handling empty rsa_context in
3445 rsa_check_pubkey() and rsa_check_privkey() (found by
3446 code coverage tests).
3447 * Fixed incorrect handling of one single negative input
3448 value in mpi_add_abs() (found by code coverage tests).
3449 * Fixed incorrect handling of negative first input
3450 value in mpi_sub_abs() (found by code coverage tests).
3451 * Fixed incorrect handling of negative first input
3452 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
3453 change also affects mpi_write_string() (found by code
3454 coverage tests).
3455 * Corrected is_prime() results for 0, 1 and 2 (found by
3456 code coverage tests).
3457 * Fixed Camellia and XTEA for 64-bit Windows systems.
3458
3459= Version 0.11.1 released on 2009-05-17
3460 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
3461 SHA-512 in rsa_pkcs1_sign()
3462
3463= Version 0.11.0 released on 2009-05-03
3464 * Fixed a bug in mpi_gcd() so that it also works when both
3465 input numbers are even and added testcases to check
3466 (found by Pierre Habouzit).
3467 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
3468 one way hash functions with the PKCS#1 v1.5 signing and
3469 verification.
3470 * Fixed minor bug regarding mpi_gcd located within the
3471 POLARSSL_GENPRIME block.
3472 * Fixed minor memory leak in x509parse_crt() and added better
3473 handling of 'full' certificate chains (found by Mathias
3474 Olsson).
3475 * Centralized file opening and reading for x509 files into
3476 load_file()
3477 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01003478 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00003479 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
3480 padlock and timing code.
3481 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
3482 responsible for crashes and unwanted behaviour.
3483 * Added support for Certificate Revocation List (CRL) parsing.
3484 * Added support for CRL revocation to x509parse_verify() and
3485 SSL/TLS code.
3486 * Fixed compatibility of XTEA and Camellia on a 64-bit system
3487 (found by Felix von Leitner).
3488
3489= Version 0.10.0 released on 2009-01-12
3490 * Migrated XySSL to PolarSSL
3491 * Added XTEA symmetric cipher
3492 * Added Camellia symmetric cipher
3493 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
3494 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
3495 * Fixed dangerous bug that can cause a heap overflow in
3496 rsa_pkcs1_decrypt (found by Christophe Devine)
3497
3498================================================================
3499XySSL ChangeLog
3500
3501= Version 0.9 released on 2008-03-16
3502
3503 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
3504 * Enabled support for large files by default in aescrypt2.c
3505 * Preliminary openssl wrapper contributed by David Barrett
3506 * Fixed a bug in ssl_write() that caused the same payload to
3507 be sent twice in non-blocking mode when send returns EAGAIN
3508 * Fixed ssl_parse_client_hello(): session id and challenge must
3509 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
3510 * Added user-defined callback debug function (Krystian Kolodziej)
3511 * Before freeing a certificate, properly zero out all cert. data
3512 * Fixed the "mode" parameter so that encryption/decryption are
3513 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01003514 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00003515 * Correctly handle the case in padlock_xcryptcbc() when input or
3516 output data is non-aligned by falling back to the software
3517 implementation, as VIA Nehemiah cannot handle non-aligned buffers
3518 * Fixed a memory leak in x509parse_crt() which was reported by Greg
3519 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
3520 Matthew Page who reported several bugs
3521 * Fixed x509_get_ext() to accept some rare certificates which have
3522 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
3523 * Added support on the client side for the TLS "hostname" extension
3524 (patch contributed by David Patino)
3525 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
3526 string is passed as the CN (bug reported by spoofy)
3527 * Added an option to enable/disable the BN assembly code
3528 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
3529 * Disabled obsolete hash functions by default (MD2, MD4); updated
3530 selftest and benchmark to not test ciphers that have been disabled
3531 * Updated x509parse_cert_info() to correctly display byte 0 of the
3532 serial number, setup correct server port in the ssl client example
3533 * Fixed a critical denial-of-service with X.509 cert. verification:
3534 peer may cause xyssl to loop indefinitely by sending a certificate
3535 for which the RSA signature check fails (bug reported by Benoit)
3536 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
3537 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
3538 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
3539 * Modified ssl_parse_client_key_exchange() to protect against
3540 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
3541 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
3542 * Updated rsa_gen_key() so that ctx->N is always nbits in size
3543 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
3544 David Barrett and Dusan Semen
3545
3546= Version 0.8 released on 2007-10-20
3547
3548 * Modified the HMAC functions to handle keys larger
3549 than 64 bytes, thanks to Stephane Desneux and gary ng
3550 * Fixed ssl_read_record() to properly update the handshake
3551 message digests, which fixes IE6/IE7 client authentication
3552 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
3553 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
3554 * Added user-defined callbacks for handling I/O and sessions
3555 * Added lots of debugging output in the SSL/TLS functions
3556 * Added preliminary X.509 cert. writing by Pascal Vizeli
3557 * Added preliminary support for the VIA PadLock routines
3558 * Added AES-CFB mode of operation, contributed by chmike
3559 * Added an SSL/TLS stress testing program (ssl_test.c)
3560 * Updated the RSA PKCS#1 code to allow choosing between
3561 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
3562 * Updated ssl_read() to skip 0-length records from OpenSSL
3563 * Fixed the make install target to comply with *BSD make
3564 * Fixed a bug in mpi_read_binary() on 64-bit platforms
3565 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
3566 * Fixed a long standing memory leak in mpi_is_prime()
3567 * Replaced realloc with malloc in mpi_grow(), and set
3568 the sign of zero as positive in mpi_init() (reported
3569 by Jonathan M. McCune)
3570
3571= Version 0.7 released on 2007-07-07
3572
3573 * Added support for the MicroBlaze soft-core processor
3574 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
3575 connections from being established with non-blocking I/O
3576 * Fixed a couple bugs in the VS6 and UNIX Makefiles
3577 * Fixed the "PIC register ebx clobbered in asm" bug
3578 * Added HMAC starts/update/finish support functions
3579 * Added the SHA-224, SHA-384 and SHA-512 hash functions
3580 * Fixed the net_set_*block routines, thanks to Andreas
3581 * Added a few demonstration programs: md5sum, sha1sum,
3582 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
3583 * Added new bignum import and export helper functions
3584 * Rewrote README.txt in program/ssl/ca to better explain
3585 how to create a test PKI
3586
3587= Version 0.6 released on 2007-04-01
3588
3589 * Ciphers used in SSL/TLS can now be disabled at compile
3590 time, to reduce the memory footprint on embedded systems
3591 * Added multiply assembly code for the TriCore and modified
3592 havege_struct for this processor, thanks to David Patiño
3593 * Added multiply assembly code for 64-bit PowerPCs,
3594 thanks to Peking University and the OSU Open Source Lab
3595 * Added experimental support of Quantum Cryptography
3596 * Added support for autoconf, contributed by Arnaud Cornet
3597 * Fixed "long long" compilation issues on IA-64 and PPC64
3598 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
3599 was not being correctly defined on ARM and MIPS
3600
3601= Version 0.5 released on 2007-03-01
3602
3603 * Added multiply assembly code for SPARC and Alpha
3604 * Added (beta) support for non-blocking I/O operations
3605 * Implemented session resuming and client authentication
3606 * Fixed some portability issues on WinCE, MINIX 3, Plan9
3607 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
3608 * Improved the performance of the EDH key exchange
3609 * Fixed a bug that caused valid packets with a payload
3610 size of 16384 bytes to be rejected
3611
3612= Version 0.4 released on 2007-02-01
3613
3614 * Added support for Ephemeral Diffie-Hellman key exchange
3615 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
3616 * Various improvement to the modular exponentiation code
3617 * Rewrote the headers to generate the API docs with doxygen
3618 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
3619 generated) and in ssl_parse_client_hello (max. client
3620 version was not properly set), thanks to Didier Rebeix
3621 * Fixed another bug in ssl_parse_client_hello: clients with
3622 cipherlists larger than 96 bytes were incorrectly rejected
3623 * Fixed a couple memory leak in x509_read.c
3624
3625= Version 0.3 released on 2007-01-01
3626
3627 * Added server-side SSLv3 and TLSv1.0 support
3628 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01003629 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00003630 * Fixed a bug in the CBC code, thanks to dowst; also,
3631 the bignum code is no longer dependent on long long
3632 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
3633 * Updated timing.c for improved compatibility with i386
3634 and 486 processors, thanks to Arnaud Cornet
3635
3636= Version 0.2 released on 2006-12-01
3637
3638 * Updated timing.c to support ARM and MIPS arch
3639 * Updated the MPI code to support 8086 on MSVC 1.5
3640 * Added the copyright notice at the top of havege.h
3641 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
3642 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
3643 * Fixed a bug reported by Torsten Lauter in ssl_read_record
3644 * Fixed a bug in rsa_check_privkey that would wrongly cause
3645 valid RSA keys to be dismissed (thanks to oldwolf)
3646 * Fixed a bug in mpi_is_prime that caused some primes to fail
3647 the Miller-Rabin primality test
3648
3649 I'd also like to thank Younès Hafri for the CRUX linux port,
3650 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
3651 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00003652
3653= Version 0.1 released on 2006-11-01