blob: 23be7dd02868dc56175404175c5d9888da178da2 [file] [log] [blame]
Dave Rodgmanfa827b42022-07-06 17:04:24 +01001Mbed TLS ChangeLog (Sorted per branch, date)
Paul Bakker99ed6782011-01-05 14:48:42 +00002
Aditya Deshpandea26938a2022-12-08 11:01:53 +00003= Mbed TLS 2.28.2 branch released 2022-12-14
4
5Security
6 * Fix potential heap buffer overread and overwrite in DTLS if
7 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
8 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Tom Cosgrovefc09b752023-03-08 15:58:47 +00009 * Fix an issue where an adversary with access to precise enough information
10 about memory accesses (typically, an untrusted operating system attacking
11 a secure enclave) could recover an RSA private key after observing the
12 victim performing a single private-key operation if the window size used
13 for the exponentiation was 3 or smaller. Found and reported by Zili KOU,
Aditya Deshpandea26938a2022-12-08 11:01:53 +000014 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
15 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
16 and Test in Europe 2023.
17
18Bugfix
19 * Fix a long-standing build failure when building x86 PIC code with old
20 gcc (4.x). The code will be slower, but will compile. We do however
21 recommend upgrading to a more recent compiler instead. Fixes #1910.
22 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
23 Contributed by Kazuyuki Kimura to fix #2020.
24 * Use double quotes to include private header file psa_crypto_cipher.h.
25 Fixes 'file not found with <angled> include' error
26 when building with Xcode.
27 * Fix handling of broken symlinks when loading certificates using
28 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
29 broken link is encountered, skip the broken link and continue parsing
30 other certificate files. Contributed by Eduardo Silva in #2602.
31 * Fix a compilation error when using CMake with an IAR toolchain.
32 Fixes #5964.
Aditya Deshpanded6f774f2022-12-09 12:52:43 +000033 * Fix bugs and missing dependencies when building and testing
34 configurations with only one encryption type enabled in TLS 1.2.
Aditya Deshpandea26938a2022-12-08 11:01:53 +000035 * Provide the missing definition of mbedtls_setbuf() in some configurations
36 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
37 * Fix compilation errors when trying to build with
38 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
aditya-deshpande-armbf864162022-12-09 10:36:50 +000039 * Fix memory leak in ssl_parse_certificate_request() caused by
40 mbedtls_x509_get_name() not freeing allocated objects in case of error.
41 Change mbedtls_x509_get_name() to clean up allocated objects on error.
Aditya Deshpandea26938a2022-12-08 11:01:53 +000042 * Fix checks on PK in check_config.h for builds with PSA and RSA. This does
43 not change which builds actually work, only moving a link-time error to
44 an early check.
45 * Fix ECDSA verification, where it was not always validating the
46 public key. This bug meant that it was possible to verify a
47 signature with an invalid public key, in some cases. Reported by
48 Guido Vranken using Cryptofuzz in #4420.
49 * Fix a possible null pointer dereference if a memory allocation fails
50 in TLS PRF code. Reported by Michael Madsen in #6516.
51 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
52 bytes when parsing certificates containing a binary RFC 4108
53 HardwareModuleName as a Subject Alternative Name extension. Hardware
54 serial numbers are now rendered in hex format. Fixes #6262.
55 * Fix bug in error reporting in dh_genprime.c where upon failure,
56 the error code returned by mbedtls_mpi_write_file() is overwritten
57 and therefore not printed.
58 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
59 with A > 0 created an unintended representation of the value 0 which was
60 not processed correctly by some bignum operations. Fix this. This had no
61 consequence on cryptography code, but might affect applications that call
62 bignum directly and use negative numbers.
63 * Fix undefined behavior (typically harmless in practice) of
64 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
65 when both operands are 0 and the left operand is represented with 0 limbs.
66 * Fix undefined behavior (typically harmless in practice) when some bignum
67 functions receive the most negative value of mbedtls_mpi_sint. Credit
68 to OSS-Fuzz. Fixes #6597.
69 * Fix undefined behavior (typically harmless in practice) in PSA ECB
70 encryption and decryption.
71
Dave Rodgmanfa827b42022-07-06 17:04:24 +010072= Mbed TLS 2.28.1 branch released 2022-07-11
Dave Rodgman6743ec42022-07-06 16:45:41 +010073
74Default behavior changes
75 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
76 for IV lengths other than 12. The library was silently overwriting this
77 length with 12, but did not inform the caller about it. Fixes #4301.
78
79Features
80 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
81 feature requirements in the file named by the new macro
82 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
83 Furthermore you may name an additional file to include after the main
84 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
85
86Security
87 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
88 module before freeing them. These buffers contain secret key material, and
89 could thus potentially leak the key through freed heap.
90 * Fix a potential heap buffer overread in TLS 1.2 server-side when
91 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
92 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
93 is selected. This may result in an application crash or potentially an
94 information leak.
95 * Fix a buffer overread in DTLS ClientHello parsing in servers with
96 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
97 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
98 after the end of the SSL input buffer. The buffer overread only happens
99 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
100 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
101 and possibly up to 571 bytes with a custom cookie check function.
102 Reported by the Cybeats PSI Team.
103
104Bugfix
105 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
106 * Fix several bugs (warnings, compiler and linker errors, test failures)
107 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
108 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
109 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
110 client would fail to check that the curve selected by the server for
111 ECDHE was indeed one that was offered. As a result, the client would
112 accept any curve that it supported, even if that curve was not allowed
113 according to its configuration. Fixes #5291.
114 * Fix unit tests that used 0 as the file UID. This failed on some
115 implementations of PSA ITS. Fixes #3838.
116 * Fix API violation in mbedtls_md_process() test by adding a call to
117 mbedtls_md_starts(). Fixes #2227.
118 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
119 to catch bad uses of time.h.
120 * Fix the library search path when building a shared library with CMake
121 on Windows.
122 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
123 potentially leading to corrupted alert messages being sent in case
124 the function needs to be re-called after initially returning
125 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
126 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but none of
127 MBEDTLS_SSL_HW_RECORD_ACCEL, MBEDTLS_SSL_EXPORT_KEYS or MBEDTLS_DEBUG_C,
128 DTLS handshakes using CID would crash due to a null pointer dereference.
129 Fix this. Fixes #3998.
130 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
131 documentation stated that the `allowed_pks` field applies to signatures
132 only, but in fact it does apply to the public key type of the end entity
133 certificate, too. Fixes #1992.
134 * Fix PSA cipher multipart operations using ARC4. Previously, an IV was
135 required but discarded. Now, an IV is rejected, as it should be.
136 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
137 not NULL and val_len is zero.
138 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
139 applicable. Fixes #5735.
140 * Fix a bug in the x25519 example program where the removal of
141 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
142 #3191.
143 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
144 GeneralizedTime. Fixes #5465.
Dave Rodgmanfa827b42022-07-06 17:04:24 +0100145 * Fix order value of curve x448.
Dave Rodgman6743ec42022-07-06 16:45:41 +0100146 * Fix string representation of DNs when outputting values containing commas
147 and other special characters, conforming to RFC 1779. Fixes #769.
148 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
149 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
150 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
151 memory conditions.
152 * Fix server connection identifier setting for outgoing encrypted records
153 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
154 connection identifier, the Mbed TLS client now properly sends the server
155 connection identifier in encrypted record headers. Fix #5872.
156 * Fix a null pointer dereference when performing some operations on zero
157 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
158 by 2, and mbedtls_mpi_write_string() in base 2).
159 * Fix record sizes larger than 16384 being sometimes accepted despite being
160 non-compliant. This could not lead to a buffer overflow. In particular,
161 application data size was already checked correctly.
162
163Changes
164 * Assume source files are in UTF-8 when using MSVC with CMake.
165
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000166= mbed TLS 2.28.0 branch released 2021-12-17
Dave Rodgman0798a822021-12-15 11:48:21 +0000167
168API changes
169 * Some fields of mbedtls_ssl_session and mbedtls_ssl_config are in a
170 different order. This only affects applications that define such
171 structures directly or serialize them.
172
173Requirement changes
174 * Sign-magnitude and one's complement representations for signed integers are
175 not supported. Two's complement is the only supported representation.
176
177Removals
178 * Remove config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES,
179 which allowed SHA-1 in the default TLS configuration for certificate
180 signing. It was intended to facilitate the transition in environments
181 with SHA-1 certificates. SHA-1 is considered a weak message digest and
182 its use constitutes a security risk.
183 * Remove the partial support for running unit tests via Greentea on Mbed OS,
184 which had been unmaintained since 2018.
185
186Features
187 * The identifier of the CID TLS extension can be configured by defining
188 MBEDTLS_TLS_EXT_CID at compile time.
189 * Warn if errors from certain functions are ignored. This is currently
190 supported on GCC-like compilers and on MSVC and can be configured through
191 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
192 (where supported) for critical functions where ignoring the return
193 value is almost always a bug. Enable the new configuration option
194 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
195 is currently implemented in the AES, DES and md modules, and will be
196 extended to other modules in the future.
197 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
198 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000199 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Dave Rodgman0798a822021-12-15 11:48:21 +0000200 * Add PSA API definition for ARIA.
201
202Security
203 * Zeroize several intermediate variables used to calculate the expected
204 value when verifying a MAC or AEAD tag. This hardens the library in
205 case the value leaks through a memory disclosure vulnerability. For
206 example, a memory disclosure vulnerability could have allowed a
207 man-in-the-middle to inject fake ciphertext into a DTLS connection.
208 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
209 from the output buffer. This fixes a potential policy bypass or decryption
210 oracle vulnerability if the output buffer is in memory that is shared with
211 an untrusted application.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000212 * Fix a double-free that happened after mbedtls_ssl_set_session() or
213 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
214 (out of memory). After that, calling mbedtls_ssl_session_free()
215 and mbedtls_ssl_free() would cause an internal session buffer to
216 be free()'d twice.
Dave Rodgman0798a822021-12-15 11:48:21 +0000217
218Bugfix
219 * Stop using reserved identifiers as local variables. Fixes #4630.
220 * The GNU makefiles invoke python3 in preference to python except on Windows.
221 The check was accidentally not performed when cross-compiling for Windows
222 on Linux. Fix this. Fixes #4774.
223 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
224 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
225 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
226 * Don't use the obsolete header path sys/fcntl.h in unit tests.
227 These header files cause compilation errors in musl.
228 Fixes #4969.
229 * Fix missing constraints on x86_64 and aarch64 assembly code
230 for bignum multiplication that broke some bignum operations with
231 (at least) Clang 12.
232 Fixes #4116, #4786, #4917, #4962.
233 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
234 * Failures of alternative implementations of AES or DES single-block
235 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
236 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
237 This does not concern the implementation provided with Mbed TLS,
238 where this function cannot fail, or full-module replacements with
239 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
240 * Some failures of HMAC operations were ignored. These failures could only
241 happen with an alternative implementation of the underlying hash module.
242 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
243 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
244 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
245 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
246 This algorithm now accepts only the same salt length for verification
247 that it produces when signing, as documented. Use the new algorithm
248 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
249 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
250 for algorithm values that fully encode the hashing step, as per the PSA
251 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
252 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
253 all algorithms that can be used with psa_{sign,verify}_hash(), including
254 these two.
255 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
256 not to list other shared libraries they need.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000257 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
258 exceeds 2^32. Fixes #4884.
Dave Rodgman0798a822021-12-15 11:48:21 +0000259 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
260 version 11.
261 * Fix the build when no SHA2 module is included. Fixes #4930.
262 * Fix the build when only the bignum module is included. Fixes #4929.
263 * Fix a potential invalid pointer dereference and infinite loop bugs in
264 pkcs12 functions when the password is empty. Fix the documentation to
265 better describe the inputs to these functions and their possible values.
266 Fixes #5136.
Dave Rodgman0798a822021-12-15 11:48:21 +0000267 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
268 operations psa_mac_compute() and psa_mac_sign_setup().
269 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
270 operations psa_mac_verify() and psa_mac_verify_setup().
271
272Changes
273 * Set config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE to be
274 disabled by default.
275 * Improve the performance of base64 constant-flow code. The result is still
276 slower than the original non-constant-flow implementation, but much faster
277 than the previous constant-flow implementation. Fixes #4814.
278 * Indicate in the error returned if the nonce length used with
279 ChaCha20-Poly1305 is invalid, and not just unsupported.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000280 * The mbedcrypto library includes a new source code module constant_time.c,
281 containing various functions meant to resist timing side channel attacks.
282 This module does not have a separate configuration option, and functions
283 from this module will be included in the build as required. Currently
284 most of the interface of this module is private and may change at any
285 time.
Dave Rodgman0798a822021-12-15 11:48:21 +0000286
Paul Elliottd925ee02021-07-01 17:58:07 +0100287= mbed TLS 2.27.0 branch released 2021-07-07
Paul Elliott67123322021-07-01 17:37:55 +0100288
289API changes
290 * Update AEAD output size macros to bring them in line with the PSA Crypto
291 API version 1.0 spec. This version of the spec parameterizes them on the
292 key type used, as well as the key bit-size in the case of
293 PSA_AEAD_TAG_LENGTH.
294 The old versions of these macros were renamed and deprecated as follows:
295 - PSA_AEAD_TAG_LENGTH -> PSA_AEAD_TAG_LENGTH_1_ARG
296 - PSA_AEAD_ENCRYPT_OUTPUT_SIZE -> PSA_AEAD_ENCRYPT_OUTPUT_SIZE_2_ARG
297 - PSA_AEAD_DECRYPT_OUTPUT_SIZE -> PSA_AEAD_DECRYPT_OUTPUT_SIZE_2_ARG
298 - PSA_AEAD_UPDATE_OUTPUT_SIZE -> PSA_AEAD_UPDATE_OUTPUT_SIZE_2_ARG
299 - PSA_AEAD_FINISH_OUTPUT_SIZE -> PSA_AEAD_FINISH_OUTPUT_SIZE_1_ARG
300 - PSA_AEAD_VERIFY_OUTPUT_SIZE -> PSA_AEAD_VERIFY_OUTPUT_SIZE_1_ARG
301 * Implement one-shot cipher functions, psa_cipher_encrypt and
302 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
303 specification.
304
305Requirement changes
306 * The library now uses the %zu format specifier with the printf() family of
307 functions, so requires a toolchain that supports it. This change does not
308 affect the maintained LTS branches, so when contributing changes please
309 bear this in mind and do not add them to backported code.
310
311Features
312 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
313 signature with a specific salt length. This function allows to validate
314 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
315 Meuter in PR #3183.
316 * Added support for built-in driver keys through the PSA opaque crypto
317 driver interface. Refer to the documentation of
318 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
319 * Implement psa_sign_message() and psa_verify_message().
320 * The new function mbedtls_mpi_random() generates a random value in a
321 given range uniformly.
322 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
323 PSA Cryptograpy API 1.0.0 specification.
324 * MBEDTLS_ECP_MAX_BITS is now determined automatically from the configured
325 curves and no longer needs to be configured explicitly to save RAM.
326
327Security
Dave Rodgman699ccf82021-07-05 18:10:27 +0100328 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
329 private keys and of blinding values for DHM and elliptic curves (ECP)
330 computations. Reported by FlorianF89 in #4245.
331 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
332 An adversary who is capable of very precise timing measurements could
333 learn partial information about the leading bits of the nonce used for the
334 signature, allowing the recovery of the private key after observing a
335 large number of signature operations. This completes a partial fix in
336 Mbed TLS 2.20.0.
Paul Elliott67123322021-07-01 17:37:55 +0100337 * It was possible to configure MBEDTLS_ECP_MAX_BITS to a value that is
338 too small, leading to buffer overflows in ECC operations. Fail the build
339 in such a case.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000340 * Fix an issue where an adversary with access to precise enough information
341 about memory accesses (typically, an untrusted operating system attacking
342 a secure enclave) could recover an RSA private key after observing the
343 victim performing a single private-key operation. Found and reported by
Paul Elliott67123322021-07-01 17:37:55 +0100344 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000345 * Fix an issue where an adversary with access to precise enough timing
346 information (typically, a co-located process) could recover a Curve25519
347 or Curve448 static ECDH key after inputting a chosen public key and
348 observing the victim performing the corresponding private-key operation.
349 Found and reported by Leila Batina, Lukas Chmielewski, Björn Haase, Niels
350 Samwel and Peter Schwabe.
Paul Elliott67123322021-07-01 17:37:55 +0100351
352Bugfix
353 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
354 get printf format specifier warnings.
355 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
Paul Elliott40d3fd32021-07-02 11:08:07 +0100356 lead to seed file corruption in the case where the path to the seed file is
Paul Elliott67123322021-07-01 17:37:55 +0100357 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
358 Krasnoshchok in #3616.
359 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
360 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
361 in line with version 1.0.0 of the specification. Fix #4162.
362 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
363 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
364 to create is not valid, bringing them in line with version 1.0.0 of the
365 specification. Fix #4271.
366 * Fix some cases in the bignum module where the library constructed an
367 unintended representation of the value 0 which was not processed
368 correctly by some bignum operations. This could happen when
369 mbedtls_mpi_read_string() was called on "-0", or when
370 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
371 the arguments being negative and the other being 0. Fixes #4643.
372 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
373 zero. Fixes #1792
374 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
375 defined. Fixes #4217.
376 * Fix an incorrect error code when parsing a PKCS#8 private key.
377 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
378 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
379 minimum size was rounded down to the nearest multiple of 8.
380 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
381 defined to specific values. If the code is used in a context
382 where these are already defined, this can result in a compilation
383 error. Instead, assume that if they are defined, the values will
384 be adequate to build Mbed TLS.
385 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
386 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
387 was disabled. Fix the dependency. Fixes #4472.
388 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
389 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
390 nonetheless, resulting in undefined reference errors when building a
391 shared library. Reported by Guillermo Garcia M. in #4411.
392 * Fix test suite code on platforms where int32_t is not int, such as
393 Arm Cortex-M. Fixes #4530.
394 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
395 directive in a header and a missing initialization in the self-test.
396 * Fix a missing initialization in the Camellia self-test, affecting
397 MBEDTLS_CAMELLIA_ALT implementations.
398 * Restore the ability to configure PSA via Mbed TLS options to support RSA
399 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
400 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
401 Fixes #4512.
402 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
403 (when the encrypt-then-MAC extension is not in use) with some ALT
404 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
405 the affected side to wrongly reject valid messages. Fixes #4118.
406 * Remove outdated check-config.h check that prevented implementing the
407 timing module on Mbed OS. Fixes #4633.
408 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
409 about missing inputs.
410 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
411 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
412 * Fix a resource leak in a test suite with an alternative AES
413 implementation. Fixes #4176.
414 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
415 could notably be triggered by setting the TLS debug level to 3 or above
416 and using a Montgomery curve for the key exchange. Reported by lhuang04
417 in #4578. Fixes #4608.
418 * psa_verify_hash() was relying on implementation-specific behavior of
Paul Elliottf3e1a252021-07-02 14:28:53 +0100419 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
420 implementations. This reliance is now removed. Fixes #3990.
Paul Elliott67123322021-07-01 17:37:55 +0100421 * Disallow inputs of length different from the corresponding hash when
422 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
423 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
424 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
425 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
426 could not be triggered by code that constructed A with one of the
427 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
428 those always built an mpi object with at least one limb.
429 Credit to OSS-Fuzz. Fixes #4641.
430 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
431 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
432 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
433 * The PSA API no longer allows the creation or destruction of keys with a
434 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
435 can now only be used as intended, for keys that cannot be modified through
436 normal use of the API.
437 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
438 in all the right places. Include it from crypto_platform.h, which is
439 the natural place. Fixes #4649.
440 * mbedtls_pk_sign() and mbedtls_pk_verify() and their extended and
441 restartable variants now always honor the specified hash length if
442 nonzero. Before, for RSA, hash_len was ignored in favor of the length of
443 the specified hash algorithm.
444 * Fix which alert is sent in some cases to conform to the
445 applicable RFC: on an invalid Finished message value, an
446 invalid max_fragment_length extension, or an
447 unsupported extension used by the server.
Paul Elliott3ca48922021-07-01 18:08:30 +0100448 * Correct (change from 12 to 13 bytes) the value of the macro describing the
449 maximum nonce length returned by psa_aead_generate_nonce().
Paul Elliott67123322021-07-01 17:37:55 +0100450
451Changes
452 * Add extra printf compiler warning flags to builds.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100453 * Fix memsan build false positive in x509_crt.c with Clang 11
Paul Elliott67123322021-07-01 17:37:55 +0100454 * Fix the setting of the read timeout in the DTLS sample programs.
455 * Remove the AES sample application programs/aes/aescrypt2 which shows
456 bad cryptographic practice. Fix #1906.
457 * Alternative implementations of CMAC may now opt to not support 3DES as a
458 CMAC block cipher, and still pass the CMAC self test.
459 * Remove configs/config-psa-crypto.h, which was identical to the default
460 configuration except for having some extra cryptographic mechanisms
461 enabled and for unintended differences. This configuration was primarily
462 intended to demonstrate the PSA API, and lost most of its usefulness when
463 MBEDTLS_PSA_CRYPTO_C became enabled by default.
464 * When building the test suites with GNU make, invoke python3 or python, not
465 python2, which is no longer supported upstream.
Dave Rodgman4614cb12021-07-05 18:50:01 +0100466 * When using session cache based session resumption on the server,
467 double-check that custom session cache implementations return
468 sessions which are consistent with the negotiated ciphersuite
469 and compression method.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100470 * Fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
Paul Elliott67123322021-07-01 17:37:55 +0100471 When that flag is on, standard GNU C printf format specifiers
472 should be used.
473 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
474 during ECC operations at a negligible performance cost.
475 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
476 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
477 when their input has length 0. Note that this is an implementation detail
478 and can change at any time, so this change should be transparent, but it
479 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
480 now writing an empty string where it previously wrote one or more
481 zero digits when operating from values constructed with an mpi_read
482 function and some mpi operations.
483 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
484 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
485 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
486 is also applied when loading a key from storage.
487
Dave Rodgman74755e42021-03-08 18:35:44 +0000488= mbed TLS 2.26.0 branch released 2021-03-08
489
490API changes
491 * Renamed the PSA Crypto API output buffer size macros to bring them in line
492 with version 1.0.0 of the specification.
493 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
494 in bits rather than bytes, with an additional flag to indicate if the
495 size may have been rounded up to a whole number of bytes.
496 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
497 with version 1.0.0 of the specification.
498
499Default behavior changes
500 * In mbedtls_rsa_context objects, the ver field was formerly documented
501 as always 0. It is now reserved for internal purposes and may take
502 different values.
503
504New deprecations
505 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
506 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
507 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
508 deprecated.
509 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
510 have been renamed, and the old names deprecated.
511
512Features
513 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
514 CTR_DRBG is used by default if it is available, but you can override
515 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
516 Fix #3354.
517 * Automatic fallback to a software implementation of ECP when
518 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
519 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
520 * The PSA crypto subsystem can now be configured to use less static RAM by
521 tweaking the setting for the maximum amount of keys simultaneously in RAM.
522 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
523 can exist simultaneously. It has a sensible default if not overridden.
524 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
525 now use an external random generator instead of the library's own
526 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
527 and see the documentation of mbedtls_psa_external_get_random() for details.
528 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
529 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
530 random generator with mbedtls_xxx functions. See the documentation of
531 mbedtls_psa_get_random() for details.
532 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
533 minimum MAC or tag length thanks to the new wildcards
534 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
535 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
536
537Security
538 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
539 nonce from entropy. Applications were affected if they called
540 mbedtls_ctr_drbg_set_nonce_len(), if they called
541 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
542 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
543 In such cases, a random nonce was necessary to achieve the advertised
544 security strength, but the code incorrectly used a constant instead of
545 entropy from the nonce.
546 Found by John Stroebel in #3819 and fixed in #3973.
547 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
548 |A| - |B| where |B| is larger than |A| and has more limbs (so the
549 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
550 applications calling mbedtls_mpi_sub_abs() directly are affected:
551 all calls inside the library were safe since this function is
552 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
553 * Fix an errorneous estimation for an internal buffer in
554 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
555 value the function might fail to write a private RSA keys of the largest
556 supported size.
557 Found by Daniel Otte, reported in #4093 and fixed in #4094.
558 * Fix a stack buffer overflow with mbedtls_net_poll() and
559 mbedtls_net_recv_timeout() when given a file descriptor that is
560 beyond FD_SETSIZE. Reported by FigBug in #4169.
561 * Guard against strong local side channel attack against base64 tables by
562 making access aceess to them use constant flow code.
563
564Bugfix
565 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
566 * Fix memory leak that occured when calling psa_close_key() on a
567 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
568 * Fix an incorrect error code if an RSA private operation glitched.
569 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
570 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
571 is enabled, on platforms where initializing a mutex allocates resources.
572 This was a regression introduced in the previous release. Reported in
573 #4017, #4045 and #4071.
574 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
575 twice is safe. This happens for RSA when some Mbed TLS library functions
576 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
577 enabled on platforms where freeing a mutex twice is not safe.
578 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
579 when MBEDTLS_THREADING_C is enabled on platforms where initializing
580 a mutex allocates resources.
581 * Fixes a bug where, if the library was configured to include support for
582 both the old SE interface and the new PSA driver interface, external keys were
583 not loaded from storage. This was fixed by #3996.
584 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
585 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
586 include this extension in all CA certificates that contain public keys
587 used to validate digital signatures on certificates and MUST mark the
588 extension as critical in such certificates." Previous to this change,
589 the extension was always marked as non-critical. This was fixed by
590 #3698.
591
592Changes
593 * A new library C file psa_crypto_client.c has been created to contain
594 the PSA code needed by a PSA crypto client when the PSA crypto
595 implementation is not included into the library.
596 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
597 now uses the getrandom syscall instead of reading from /dev/urandom.
598
Janos Follath56b38c22020-12-09 01:34:21 +0000599= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +0000600
601API changes
602 * The numerical values of the PSA Crypto API macros have been updated to
603 conform to version 1.0.0 of the specification.
604 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
605 The underlying stream cipher is determined by the key type
606 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
607 * The functions mbedtls_cipher_auth_encrypt() and
608 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
609 as they have no way to check if the output buffer is large enough.
610 Please use mbedtls_cipher_auth_encrypt_ext() and
611 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
612 Cryptofuzz. Fixes #3665.
613
614Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +0000615 * Update the minimum required CMake version to 2.8.12. This silences a
616 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +0000617
618New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +0100619 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000620 Use PSA_ALG_STREAM_CIPHER instead.
621 * The functions mbedtls_cipher_auth_encrypt() and
622 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
623 functions mbedtls_cipher_auth_encrypt_ext() and
624 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
625 these new functions always append the tag to the ciphertext, and include
626 the tag in the ciphertext length.
627
628Features
Janos Follathd6ce1162020-12-09 16:32:01 +0000629 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
630 ciphers, asymmetric signing/verification and key generation, validate_key
631 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +0000632 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000633 * In PSA, allow using a key declared with a base key agreement algorithm
634 in combined key agreement and derivation operations, as long as the key
635 agreement algorithm in use matches the algorithm the key was declared with.
636 This is currently non-standard behaviour, but expected to make it into a
637 future revision of the PSA Crypto standard.
638 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
639 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
640 external CMake projects that include this one to avoid CMake target name
641 clashes. The default value of this variable is "", so default target names
642 are unchanged.
643 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
644 Pascal, improved by Ron Eldor.
645 * In the PSA API, it is no longer necessary to open persistent keys:
646 operations now accept the key identifier. The type psa_key_handle_t is now
647 identical to psa_key_id_t instead of being platform-defined. This bridges
648 the last major gap to compliance with the PSA Cryptography specification
649 version 1.0.0. Opening persistent keys is still supported for backward
650 compatibility, but will be deprecated and later removed in future
651 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000652 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
653 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
654 1.0.0 of the PSA Crypto API specification.
655
656Security
657 * The functions mbedtls_cipher_auth_encrypt() and
658 mbedtls_cipher_auth_decrypt() would write past the minimum documented
659 size of the output buffer when used with NIST_KW. As a result, code using
660 those functions as documented with NIST_KW could have a buffer overwrite
661 of up to 15 bytes, with consequences ranging up to arbitrary code
662 execution depending on the location of the output buffer.
663 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
664 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
665 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
666 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
667 which is how most uses of randomization in asymmetric cryptography
668 (including key generation, intermediate value randomization and blinding)
669 are implemented. This could cause failures or the silent use of non-random
670 values. A random generator can fail if it needs reseeding and cannot not
671 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
672 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
673 * Fix a compliance issue whereby we were not checking the tag on the
674 algorithm parameters (only the size) when comparing the signature in the
675 description part of the cert to the real signature. This meant that a
676 NULL algorithm parameters entry would look identical to an array of REAL
677 (size zero) to the library and thus the certificate would be considered
678 valid. However, if the parameters do not match in *any* way then the
679 certificate should be considered invalid, and indeed OpenSSL marks these
680 certs as invalid when mbedtls did not.
681 Many thanks to guidovranken who found this issue via differential fuzzing
682 and reported it in #3629.
683 * Zeroising of local buffers and variables which are used for calculations
684 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
685 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
686 functions to erase sensitive data from memory. Reported by
687 Johan Malmgren and Johan Uppman Bruce from Sectra.
688
689Bugfix
Paul Elliott40d3fd32021-07-02 11:08:07 +0100690 * Fix an invalid (but non-zero) return code from mbedtls_pk_parse_subpubkey()
Janos Follath76027f62020-12-09 16:28:35 +0000691 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000692 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
693 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
694 * Include the psa_constant_names generated source code in the source tree
695 instead of generating it at build time. Fixes #3524.
696 * Fix rsa_prepare_blinding() to retry when the blinding value is not
697 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
698 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
699 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
700 Fixes #3647.
701 * Use socklen_t on Android and other POSIX-compliant system
702 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
703 Fix #3432.
704 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
705 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
706 psa_cipher_* functions compliant with the PSA Crypto API specification.
707 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
708 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
709 only the curves that support ECDSA, filter the list with
710 mbedtls_ecdsa_can_do().
711 * Fix psa_generate_key() returning an error when asked to generate
712 an ECC key pair on Curve25519 or secp244k1.
713 * Fix psa_key_derivation_output_key() to allow the output of a combined key
714 agreement and subsequent key derivation operation to be used as a key
715 inside of the PSA Crypto core.
716 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
717 chars. Fixes a build failure on platforms where char is unsigned. Fixes
718 #3794.
719 * Fix an off-by-one error in the additional data length check for
720 CCM, which allowed encryption with a non-standard length field.
721 Fixes #3719.
722 * Correct the default IV size for mbedtls_cipher_info_t structures using
723 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
724 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
725 defined. Fix contributed in #3571.
726 * Fix conditions for including string.h in error.c. Fixes #3866.
727 * psa_set_key_id() now also sets the lifetime to persistent for keys located
728 in a secure element.
729 * Attempting to create a volatile key with a non-zero key identifier now
730 fails. Previously the key identifier was just ignored when creating a
731 volatile key.
732 * Attempting to create or register a key with a key identifier in the vendor
733 range now fails.
734 * Fix build failures on GCC 11. Fixes #3782.
735 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
736 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
737 (an error condition) and the second operand was aliased to the result.
738 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
739 could go undetected, resulting in an incorrect result.
740 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
741 Fixes #2927.
742 * In PEM writing functions, fill the trailing part of the buffer with null
743 bytes. This guarantees that the corresponding parsing function can read
744 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
745 until this property was inadvertently broken in Mbed TLS 2.19.0.
746 Fixes #3682.
747 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
748 option on. In this configuration key management methods that are required
749 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
750 Fixes #3818. Reported by John Stroebel.
751
752Changes
753 * Reduce stack usage significantly during sliding window exponentiation.
754 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
755 * The PSA persistent storage format is updated to always store the key bits
756 attribute. No automatic upgrade path is provided. Previously stored keys
757 must be erased, or manually upgraded based on the key storage format
758 specification (docs/architecture/mbed-crypto-storage-specification.md).
759 Fixes #3740.
760 * Remove the zeroization of a pointer variable in AES rounds. It was valid
761 but spurious and misleading since it looked like a mistaken attempt to
762 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
763 Leti, France.
764
Janos Follath6012f0e2020-08-26 15:32:10 +0100765= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100766
767API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100768 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
769 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
770 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100771 Rename associated macros as well:
772 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
773 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
774 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
775 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
776
777Default behavior changes
778 * Stop storing persistent information about externally stored keys created
779 through PSA Crypto with a volatile lifetime. Reported in #3288 and
780 contributed by Steven Cooreman in #3382.
781
782Features
783 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
784 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
785 * Support building on e2k (Elbrus) architecture: correctly enable
786 -Wformat-signedness, and fix the code that causes signed-one-bit-field
787 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
788 <akemi_homura@kurisa.ch>.
789
790Security
791 * Fix a vulnerability in the verification of X.509 certificates when
792 matching the expected common name (the cn argument of
793 mbedtls_x509_crt_verify()) with the actual certificate name: when the
794 subjecAltName extension is present, the expected name was compared to any
795 name in that extension regardless of its type. This means that an
796 attacker could for example impersonate a 4-bytes or 16-byte domain by
797 getting a certificate for the corresponding IPv4 or IPv6 (this would
798 require the attacker to control that IP address, though). Similar attacks
799 using other subjectAltName name types might be possible. Found and
800 reported by kFYatek in #3498.
801 * When checking X.509 CRLs, a certificate was only considered as revoked if
802 its revocationDate was in the past according to the local clock if
803 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
804 certificates were never considered as revoked. On builds with
805 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
806 example, an untrusted OS attacking a secure enclave) could prevent
807 revocation of certificates via CRLs. Fixed by no longer checking the
808 revocationDate field, in accordance with RFC 5280. Reported by
809 yuemonangong in #3340. Reported independently and fixed by
810 Raoul Strackx and Jethro Beekman in #3433.
811 * In (D)TLS record decryption, when using a CBC ciphersuites without the
812 Encrypt-then-Mac extension, use constant code flow memory access patterns
813 to extract and check the MAC. This is an improvement to the existing
814 countermeasure against Lucky 13 attacks. The previous countermeasure was
815 effective against network-based attackers, but less so against local
816 attackers. The new countermeasure defends against local attackers, even
817 if they have access to fine-grained measurements. In particular, this
818 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
819 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
820 (University of Florida) and Dave Tian (Purdue University).
821 * Fix side channel in RSA private key operations and static (finite-field)
822 Diffie-Hellman. An adversary with precise enough timing and memory access
823 information (typically an untrusted operating system attacking a secure
824 enclave) could bypass an existing counter-measure (base blinding) and
825 potentially fully recover the private key.
826 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
827 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
828 for pinpointing the problematic code.
829 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
830 application data from memory. Reported in #689 by
831 Johan Uppman Bruce of Sectra.
832
833Bugfix
834 * Library files installed after a CMake build no longer have execute
835 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100836 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
837 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100838 Reported in #3451 and fix contributed in #3452 by okhowang.
839 * Fix the endianness of Curve25519 keys imported/exported through the PSA
840 APIs. psa_import_key and psa_export_key will now correctly expect/output
841 Montgomery keys in little-endian as defined by RFC7748. Contributed by
842 Steven Cooreman in #3425.
843 * Fix build errors when the only enabled elliptic curves are Montgomery
844 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
845 also fixes missing declarations reported by Steven Cooreman in #1147.
846 * Fix self-test failure when the only enabled short Weierstrass elliptic
847 curve is secp192k1. Fixes #2017.
848 * PSA key import will now correctly import a Curve25519/Curve448 public key
849 instead of erroring out. Contributed by Steven Cooreman in #3492.
850 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
851 lower bits. Fix contributed in #3540.
852 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
853 conditions. Reported and fix suggested by Guido Vranken in #3486.
854 * Fix bug in redirection of unit test outputs on platforms where stdout is
855 defined as a macro. First reported in #2311 and fix contributed in #3528.
856
857Changes
858 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
859 in #3478 and fix contributed in #3479 by okhowang.
860 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
861 previously could lead to stack overflow on constrained devices.
862 Contributed by Doru Gucea and Simon Leet in #3464.
863 * Undefine the ASSERT macro before defining it locally, in case it is defined
864 in a platform header. Contributed by Abdelatif Guettouche in #3557.
865 * Update copyright notices to use Linux Foundation guidance. As a result,
866 the copyright of contributors other than Arm is now acknowledged, and the
867 years of publishing are no longer tracked in the source files. This also
868 eliminates the need for the lines declaring the files to be part of
869 MbedTLS. Fixes #3457.
870 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
871 example applications which allows to provide a password for the key file
872 specified through the existing key_file argument. This allows the use of
873 these applications with password-protected key files. Analogously but for
874 ssl_server2 only, add the command line parameter key_pwd2 which allows to
875 set a password for the key file provided through the existing key_file2
876 argument.
877
Janos Follath13cba682020-06-26 12:40:52 +0100878= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +0100879
880Default behavior changes
881 * In the experimental PSA secure element interface, change the encoding of
882 key lifetimes to encode a persistence level and the location. Although C
883 prototypes do not effectively change, code calling
884 psa_register_se_driver() must be modified to pass the driver's location
885 instead of the keys' lifetime. If the library is upgraded on an existing
886 device, keys created with the old lifetime value will not be readable or
887 removable through Mbed TLS after the upgrade.
888
889Features
890 * New functions in the error module return constant strings for
891 high- and low-level error codes, complementing mbedtls_strerror()
892 which constructs a string for any error code, including compound
893 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
894 in #3176.
895 * The new utility programs/ssl/ssl_context_info prints a human-readable
896 dump of an SSL context saved with mbedtls_ssl_context_save().
897 * Add support for midipix, a POSIX layer for Microsoft Windows.
898 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
899 parsing unsupported certificate extensions via user provided callback.
900 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
901 a solution to #3241.
902 * Pass the "certificate policies" extension to the callback supplied to
903 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
904 policies (#3419).
905 * Added support to entropy_poll for the kern.arandom syscall supported on
906 some BSD systems. Contributed by Nia Alarie in #3423.
907 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
908
909Security
910 * Fix a side channel vulnerability in modular exponentiation that could
911 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
912 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
913 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
914 Strackx (Fortanix) in #3394.
915 * Fix side channel in mbedtls_ecp_check_pub_priv() and
916 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
917 private key that didn't include the uncompressed public key), as well as
918 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
919 f_rng argument. An attacker with access to precise enough timing and
920 memory access information (typically an untrusted operating system
921 attacking a secure enclave) could fully recover the ECC private key.
922 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
923 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
924 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
925 macros). This would cause the original Lucky 13 attack to be possible in
926 those configurations, allowing an active network attacker to recover
927 plaintext after repeated timing measurements under some conditions.
928 Reported and fix suggested by Luc Perneel in #3246.
929
930Bugfix
931 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
932 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
933 the example programs. Reported in #1430 and fix contributed by irwir.
934 * Fix undefined behavior in X.509 certificate parsing if the
935 pathLenConstraint basic constraint value is equal to INT_MAX.
936 The actual effect with almost every compiler is the intended
937 behavior, so this is unlikely to be exploitable anywhere. #3192
938 * Fix issue with a detected HW accelerated record error not being exposed
939 due to shadowed variable. Contributed by Sander Visser in #3310.
940 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
941 NULL pointer argument. Contributed by Sander Visser in #3312.
942 * Fix potential linker errors on dual world platforms by inlining
943 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
944 from psa_crypto.c. Fixes #3300.
945 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
946 #2855.
947 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
948 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
949 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
950 * Remove unused macros from MSVC projects. Reported in #3297 and fix
951 submitted in #3333 by irwir.
952 * Add additional bounds checks in ssl_write_client_hello() preventing
953 output buffer overflow if the configuration declared a buffer that was
954 too small.
955 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
956 fix submitted in #3421 by Nia Alarie.
957 * Fix building library/net_sockets.c and the ssl_mail_client program on
958 NetBSD. Contributed by Nia Alarie in #3422.
959 * Fix false positive uninitialised variable reported by cpp-check.
960 Contributed by Sander Visser in #3311.
961 * Update iv and len context pointers manually when reallocating buffers
962 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
963 when receiving a connection with CID, when these fields were shifted
964 in ssl_parse_record_header().
965
966Changes
967 * Fix warnings about signedness issues in format strings. The build is now
968 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
969 in #3153.
970 * Fix minor performance issue in operations on Curve25519 caused by using a
971 suboptimal modular reduction in one place. Found and fix contributed by
972 Aurelien Jarno in #3209.
973 * Combine identical cases in switch statements in md.c. Contributed
974 by irwir in #3208.
975 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
976 by irwir in #3150.
977 * Unify the example programs termination to call mbedtls_exit() instead of
978 using a return command. This has been done to enable customization of the
979 behavior in bare metal environments.
980 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
981 Contributed by Koh M. Nakagawa in #3326.
982 * Use FindPython3 when cmake version >= 3.15.0
983 * Abort the ClientHello writing function as soon as some extension doesn't
984 fit into the record buffer. Previously, such extensions were silently
985 dropped. As a consequence, the TLS handshake now fails when the output
986 buffer is not large enough to hold the ClientHello.
987 * The unit tests now rely on header files in tests/include/test and source
988 files in tests/src. When building with make or cmake, the files in
989 tests/src are compiled and the resulting object linked into each test
990 executable.
991 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
992 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
993 coutermeasures. If side channels are not a concern, this dependency can
994 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
995 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
996 Martinho. #3147
997 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
998 in #3182 and fix submitted by irwir. #3217
999 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
1000
Janos Follath876e0252020-04-08 17:15:18 +01001001= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001002
1003New deprecations
1004 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
1005 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001006 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
1007 mbedtls_ssl_get_output_max_frag_len() and
1008 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
1009 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001010
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001011Security
1012 * Fix issue in DTLS handling of new associations with the same parameters
1013 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
1014 the server could cause it to drop established associations with
1015 legitimate clients, resulting in a Denial of Service. This could only
1016 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
1017 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01001018 * Fix side channel in ECC code that allowed an adversary with access to
1019 precise enough timing and memory access information (typically an
1020 untrusted operating system attacking a secure enclave) to fully recover
1021 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
1022 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02001023 * Fix a potentially remotely exploitable buffer overread in a
1024 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001025
Janos Follathee856862020-04-08 16:58:36 +01001026Features
1027 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
1028 resizes the I/O buffers before and after handshakes, reducing the memory
1029 consumption during application data transfer.
1030
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001031Bugfix
1032 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
1033 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03001034 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
1035 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01001036 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
1037 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001038
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001039Changes
1040 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
1041 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001042 * Split mbedtls_ssl_get_max_frag_len() into
1043 mbedtls_ssl_get_output_max_frag_len() and
1044 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
1045 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1046 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001047
Janos Follath138c2ea2020-02-19 14:32:24 +00001048= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00001049
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001050New deprecations
1051 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
1052 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00001053 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01001054 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
1055 library which allows TLS authentication to use keys stored in a
1056 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001057
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001058Security
1059 * Fix potential memory overread when performing an ECDSA signature
1060 operation. The overread only happens with cryptographically low
1061 probability (of the order of 2^-n where n is the bitsize of the curve)
1062 unless the RNG is broken, and could result in information disclosure or
1063 denial of service (application crash or extra resource consumption).
1064 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001065 * To avoid a side channel vulnerability when parsing an RSA private key,
1066 read all the CRT parameters from the DER structure rather than
1067 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
1068 Brumley. Reported and fix contributed by Jack Lloyd.
1069 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001070
1071Features
1072 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
1073 support without SHA-384.
1074
1075API changes
1076 * Change the encoding of key types and curves in the PSA API. The new
1077 values are aligned with the upcoming release of the PSA Crypto API
1078 specification version 1.0.0. The main change which may break some
1079 existing code is that elliptic curve key types no longer encode the
1080 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
1081 a curve family and the key size determines the exact curve (for example,
1082 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
1083
Jaeden Amero62236d72020-01-24 18:20:22 +00001084Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01001085 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01001086 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
1087 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01001088 * Fix some false-positive uninitialized variable warnings in X.509. Fix
1089 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001090 * Fix a possible error code mangling in psa_mac_verify_finish() when
1091 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00001092 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
1093 RSA keys that would later be rejected by functions expecting private
1094 keys. Found by Catena cyber using oss-fuzz (issue 20467).
1095 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
1096 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00001097
Jaeden Amerod56a2af2020-01-15 18:07:20 +00001098= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03001099
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001100Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001101 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001102 entropy function to obtain entropy for a nonce if the entropy size is less
1103 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001104 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001105 nonce length to 0.
1106
1107Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001108 * Enforce that mbedtls_entropy_func() gathers a total of
1109 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001110 default configuration, on a platform with a single entropy source, the
1111 entropy module formerly only grabbed 32 bytes, which is good enough for
1112 security if the source is genuinely strong, but less than the expected 64
1113 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01001114 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
1115 mbedtls_internal_aes_decrypt() before exiting the function. The value of
1116 these variables can be used to recover the last round key. To follow best
1117 practice and to limit the impact of buffer overread vulnerabilities (like
1118 Heartbleed) we need to zeroize them before exiting the function.
1119 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
1120 Grant Hernandez, and Kevin Butler (University of Florida) and
1121 Dave Tian (Purdue University).
1122 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
1123 constant time/constant trace, so side channel attacks can retrieve the
1124 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
1125 to have only large prime factors), and then, by brute force, recover the
1126 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
1127 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
1128 timings on the comparison in the key generation enabled the attacker to
1129 learn leading bits of the ephemeral key used during ECDSA signatures and to
1130 recover the private key. Reported by Jeremy Dubeuf.
1131 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
1132 failures could happen with alternative implementations of AES. Bug
1133 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
1134 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001135
1136Features
1137 * Key derivation inputs in the PSA API can now either come from a key object
1138 or from a buffer regardless of the step type.
1139 * The CTR_DRBG module can grab a nonce from the entropy source during the
1140 initial seeding. The default nonce length is chosen based on the key size
1141 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001142 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001143 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001144 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001145
1146API changes
1147 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
1148 key derivation function, use a buffer instead (this is now always
1149 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001150 * Rename psa_asymmetric_sign() to psa_sign_hash() and
1151 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001152
irwir6c0da642019-09-26 21:07:41 +03001153Bugfix
1154 * Fix an incorrect size in a debugging message. Reported and fix
1155 submitted by irwir. Fixes #2717.
1156 * Fix an unused variable warning when compiling without DTLS.
1157 Reported and fix submitted by irwir. Fixes #2800.
1158 * Remove a useless assignment. Reported and fix submitted by irwir.
1159 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001160 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01001161 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001162 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001163 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001164 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001165 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001166 * mbedtls_ctr_drbg_set_entropy_len() and
1167 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
1168 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001169
1170Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001171 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001172 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001173 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001174 before).
1175 * Variables containing error codes are now initialized to an error code
1176 rather than success, so that coding mistakes or memory corruption tends to
1177 cause functions to return this error code rather than a success. There are
1178 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01001179 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001180 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001181 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001182 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01001183 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001184 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001185 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03001186
Jaeden Amero914a5072019-09-18 13:35:57 +01001187= mbed TLS 2.19.1 branch released 2019-09-16
1188
1189Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06001190 * Declare include headers as PUBLIC to propagate to CMake project consumers
1191 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01001192 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
1193 TLS sessions with tools like Wireshark.
1194
1195API Changes
1196 * Make client_random and server_random const in
1197 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
1198 from modifying the client/server hello.
1199
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001200Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01001201 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001202 contributed by apple-ihack-geek in #2663.
1203
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001204= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001205
Gilles Peskine52157832018-08-11 00:51:04 +02001206Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001207 * Fix a missing error detection in ECJPAKE. This could have caused a
1208 predictable shared secret if a hardware accelerator failed and the other
1209 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02001210 * When writing a private EC key, use a constant size for the private
1211 value, as specified in RFC 5915. Previously, the value was written
1212 as an ASN.1 INTEGER, which caused the size of the key to leak
1213 about 1 bit of information on average and could cause the value to be
1214 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00001215 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
1216 implement blinding. Because of this for the same key and message the same
1217 blinding value was generated. This reduced the effectiveness of the
1218 countermeasure and leaked information about the private key through side
1219 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02001220
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001221Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001222 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02001223 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001224 store it in non-volatile storage, and later using it for TLS session
1225 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03001226 * Add a new API function mbedtls_ssl_check_record() to allow checking that
1227 an incoming record is valid, authentic and has not been seen before. This
1228 feature can be used alongside Connection ID and SSL context serialisation.
1229 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
1230 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001231 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
1232 (https://project-everest.github.io/). It can be enabled at compile time
1233 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
1234 verified and significantly faster, but is only supported on x86 platforms
1235 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
1236 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01001237 * Add mbedtls_net_close(), enabling the building of forking servers where
1238 the parent process closes the client socket and continue accepting, and
1239 the child process closes the listening socket and handles the client
1240 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001241
Gilles Peskine60b29d62019-08-14 18:37:59 +02001242API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02001243 * Add DER-encoded test CRTs to library/certs.c, allowing
1244 the example programs ssl_server2 and ssl_client2 to be run
1245 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
1246 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001247 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
1248 list all curves for which at least one of ECDH or ECDSA is supported, not
1249 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
1250 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
1251 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001252 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
1253 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
1254 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00001255
1256New deprecations
1257 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
1258 RNG function as an input.
1259 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
1260 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02001261
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001262Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01001263 * Fix missing bounds checks in X.509 parsing functions that could
1264 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
1265 * Fix multiple X.509 functions previously returning ASN.1 low-level error
1266 codes to always wrap these codes into X.509 high level error codes before
1267 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01001268 * Fix to allow building test suites with any warning that detects unused
1269 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01001270 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01001271 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01001272 * Fix build failure when building with mingw on Windows by including
1273 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01001274 * Fix Visual Studio Release x64 build configuration by inheriting
1275 PlatformToolset from the project configuration. Fixes #1430 reported by
1276 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01001277 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
1278 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02001279 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01001280 * Avoid use of statically sized stack buffers for certificate writing.
1281 This previously limited the maximum size of DER encoded certificates
1282 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04001283 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02001284 * Update test certificates that were about to expire. Reported by
1285 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02001286 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
1287 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
1288 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01001289 * Fix propagation of restart contexts in restartable EC operations.
1290 This could previously lead to segmentation faults in builds using an
1291 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01001292 * Fix memory leak in in mpi_miller_rabin(). Contributed by
1293 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06001294 * Improve code clarity in x509_crt module, removing false-positive
1295 uninitialized variable warnings on some recent toolchains (GCC8, etc).
1296 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01001297 * Fix bug in endianness conversion in bignum module. This lead to
1298 functionally incorrect code on bigendian systems which don't have
1299 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01001300
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001301Changes
Hanno Becker136512b2019-05-30 11:16:02 +01001302 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02001303 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
1304 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01001305 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06001306 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
1307 docker-env.sh) to simplify running test suites on a Linux host. Contributed
1308 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01001309 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
1310 test runs without variability. Contributed by Philippe Antoine (Catena
1311 cyber) in #2681.
1312 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02001313 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
1314 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001315 * Remove the crypto part of the library from Mbed TLS. The crypto
1316 code and tests are now only available via Mbed Crypto, which
1317 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001318
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001319= mbed TLS 2.18.1 branch released 2019-07-12
1320
Jaeden Ameroded319d2019-05-30 13:18:24 +01001321Bugfix
1322 * Fix build failure when building with mingw on Windows by including
1323 stdarg.h where needed. Fixes #2656.
1324
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001325Changes
1326 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
1327 Ashley Duncan in #2609.
1328
Jaeden Amerob1c72f52019-06-11 17:18:09 +01001329= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001330
Hanno Beckerac4172c2019-01-31 09:27:04 +00001331Features
1332 * Add the Any Policy certificate policy oid, as defined in
1333 rfc 5280 section 4.2.1.4.
1334 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
1335 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00001336 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
1337 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00001338 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00001339 Contributed by Jack Lloyd and Fortanix Inc.
1340 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001341 and the used tls-prf.
1342 * Add public API for tls-prf function, according to requested enum.
1343 * Add support for parsing otherName entries in the Subject Alternative Name
1344 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00001345 as defined in RFC 4108 section 5.
1346 * Add support for parsing certificate policies extension, as defined in
1347 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
1348 supported.
1349 * List all SAN types in the subject_alt_names field of the certificate.
1350 Resolves #459.
1351 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00001352 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
1353 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00001354 lifetime of the underlying transport by adding a connection identifier
1355 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001356 incoming record with the correct connection data even after the peer has
1357 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00001358 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
1359 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
1360
Paul Bakker5121ce52009-01-03 21:22:43 +00001361
Jaeden Amero4e0db562019-08-27 11:18:28 +01001362API Changes
1363 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
1364 and the used tls-prf.
1365 * Add public API for tls-prf function, according to requested enum.
1366
Paul Bakker5121ce52009-01-03 21:22:43 +00001367Bugfix
1368 * Fix private key DER output in the key_app_writer example. File contents
1369 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
1370 Christian Walther in #2239.
1371 * Fix potential memory leak in X.509 self test. Found and fixed by
1372 Junhwan Park, #2106.
1373 * Reduce stack usage of hkdf tests. Fixes #2195.
1374 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
1375 used with negative inputs. Found by Guido Vranken in #2404. Credit to
1376 OSS-Fuzz.
1377 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
1378 either used both encrypt and decrypt key schedules, or which perform padding.
1379 GCM and CCM were not affected. Fixed by Jack Lloyd.
1380 * Fix incorrect default port number in ssl_mail_client example's usage.
1381 Found and fixed by irwir. #2337
1382 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
1383 Fixed by Peter Kolbus (Garmin). #2579
1384 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00001385 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
1386 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001387 for the parameter.
1388 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00001389 sni entry parameter. Reported by inestlerode in #560.
1390 * Set the next sequence of the subject_alt_name to NULL when deleting
1391 sequence on failure. Found and fix suggested by Philippe Antoine.
1392 Credit to OSS-Fuzz.
1393
Paul Bakker5121ce52009-01-03 21:22:43 +00001394Changes
1395 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
1396 mbedTLS configuration only SHA-2 signed certificates are accepted.
1397 This certificate is used in the demo server programs, which lead the
1398 client programs to fail at the peer's certificate verification
1399 due to an unacceptable hash signature. The certificate has been
1400 updated to one that is SHA-256 signed. Fix contributed by
1401 Illya Gerasymchuk.
1402 * Return from various debugging routines immediately if the
1403 provided SSL context is unset.
1404 * Remove dead code from bignum.c in the default configuration.
1405 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
1406 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
1407 Contributed by Peter Kolbus (Garmin).
1408 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
1409 improve clarity. Fixes #2258.
1410
1411= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00001412
1413Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001414 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
1415 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001416 at the cost of additional lifetime constraints on the input
1417 buffer, but at the benefit of reduced RAM consumption.
1418 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
1419 named bitstring in DER as required by RFC 5280 Appendix B.
1420 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
1421 from the default list (enabled by default). See
1422 https://sweet32.info/SWEET32_CCS16.pdf.
1423
1424API Changes
1425 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001426 See the Features section for more information.
1427 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
1428 for the benefit of saving RAM, by disabling the new compile-time
1429 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
1430 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
1431 always return NULL, and removes the peer_cert field from the
1432 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01001433 certificate.
1434
1435Security
1436 * Make mbedtls_ecdh_get_params return an error if the second key
1437 belongs to a different group from the first. Before, if an application
1438 passed keys that belonged to different group, the first key's data was
1439 interpreted according to the second group, which could lead to either
1440 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001441 latter case, this could expose at most 5 bits of the private key.
1442
1443Bugfix
1444 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
1445 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
1446 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
1447 Raised as a comment in #1996.
1448 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
1449 previously lead to a stack overflow on constrained targets.
1450 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
1451 in the header files, which missed the precompilation check. #971
1452 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
1453 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00001454 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
1455 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02001456 * Fix signed-to-unsigned integer conversion warning
1457 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06001458 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
1459 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01001460 * Fix false failure in all.sh when backup files exist in include/mbedtls
1461 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
1462 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
1463 mbedtls_asn1_write_bitstring().
1464 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
1465 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00001466 correctly as trailing zeroes were not accounted for as unused bits in the
1467 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00001468
1469Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001470 * Reduce RAM consumption during session renegotiation by not storing
1471 the peer CRT chain and session ticket twice.
1472 * Include configuration file in all header files that use configuration,
1473 instead of relying on other header files that they include.
1474 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001475 * Add support for alternative CSR headers, as used by Microsoft and defined
1476 in RFC 7468. Found by Michael Ernst. Fixes #767.
1477 * Correct many misspellings. Fixed by MisterDA #2371.
1478 * Provide an abstraction of vsnprintf to allow alternative implementations
1479 for platforms that don't provide it. Based on contributions by Joris Aerts
1480 and Nathaniel Wesley Filardo.
1481 * Fix clobber list in MIPS assembly for large integer multiplication.
1482 Previously, this could lead to functionally incorrect assembly being
1483 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01001484 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
1485 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01001486 * Reduce the complexity of the timing tests. They were assuming more than the
1487 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01001488 * Fix configuration queries in ssl-opt.h. #2030
1489 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00001490 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
1491 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001492 * Ciphersuites based on 3DES now have the lowest priority by default when
1493 they are enabled.
1494
1495= mbed TLS 2.16.0 branch released 2018-12-21
1496
1497Features
1498 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
1499 of parameters in the API. This allows detection of obvious misuses of the
1500 API, such as passing NULL pointers. The API of existing functions hasn't
1501 changed, but requirements on parameters have been made more explicit in
1502 the documentation. See the corresponding API documentation for each
1503 function to see for which parameter values it is defined. This feature is
1504 disabled by default. See its API documentation in config.h for additional
1505 steps you have to take when enabling it.
1506
1507API Changes
1508 * The following functions in the random generator modules have been
1509 deprecated and replaced as shown below. The new functions change
1510 the return type from void to int to allow returning error codes when
1511 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
1512 primitive. Fixes #1798.
1513 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
1514 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
1515 * Extend ECDH interface to enable alternative implementations.
1516 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
1517 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
1518 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
1519 * Additional parameter validation checks have been added for the following
1520 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
1521 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
1522 Where modules have had parameter validation added, existing parameter
1523 checks may have changed. Some modules, such as Chacha20 had existing
1524 parameter validation whereas other modules had little. This has now been
1525 changed so that the same level of validation is present in all modules, and
1526 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
1527 is off. That means that checks which were previously present by default
1528 will no longer be.
1529
1530New deprecations
1531 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
1532 in favor of functions that can return an error code.
1533
1534Bugfix
1535 * Fix for Clang, which was reporting a warning for the bignum.c inline
1536 assembly for AMD64 targets creating string literals greater than those
1537 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
1538 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
1539 through qemu user emulation. Reported and fix suggested by randombit
1540 in #1212. Fixes #1212.
1541 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
1542 This could lead to a buffer overflow, but only in case ticket authentication
1543 was broken. Reported and fix suggested by Guido Vranken in #659.
1544 * Add explicit integer to enumeration type casts to example program
1545 programs/pkey/gen_key which previously led to compilation failure
1546 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
1547 * Fix double initialization of ECC hardware that made some accelerators
1548 hang.
1549 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001550 of check for certificate/key matching. Reported by Attila Molnar, #507.
1551
1552 = mbed TLS 2.15.1 branch released 2018-11-30
1553
1554 Changes
1555 * Update the Mbed Crypto submodule to version 0.1.0b2.
1556
1557 = mbed TLS 2.15.0 branch released 2018-11-23
1558
1559 Features
1560 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
1561 Mbed Crypto as the source of the cryptography implementation.
1562 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
1563 the PSA Crypto API from Mbed Crypto when additionally used with the
1564 USE_CRYPTO_SUBMODULE build option.
1565
1566 Changes
1567 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001568 from the cipher abstraction layer. Fixes #2198.
1569
1570= mbed TLS 2.14.1 branch released 2018-11-30
1571
1572Security
1573 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
1574 decryption that could lead to a Bleichenbacher-style padding oracle
1575 attack. In TLS, this affects servers that accept ciphersuites based on
1576 RSA decryption (i.e. ciphersuites whose name contains RSA but not
1577 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
1578 (University of Adelaide), Daniel Genkin (University of Michigan),
1579 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
1580 (University of Adelaide, Data61). The attack is described in more detail
1581 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
1582 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
1583 via branching and memory access patterns. An attacker who could submit
1584 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
1585 of the decryption and not its result could nonetheless decrypt RSA
1586 plaintexts and forge RSA signatures. Other asymmetric algorithms may
1587 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
1588 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
1589 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
1590 modules.
1591
1592API Changes
1593 * The new functions mbedtls_ctr_drbg_update_ret() and
1594 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
1595 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001596 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001597 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001598
Hanno Beckerd3445da2018-11-02 09:36:45 +00001599= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001600
Simon Butcherb35e59d2018-11-19 15:49:26 +00001601Security
Simon Butcher681edee2018-11-07 16:25:38 +00001602 * Fix overly strict DN comparison when looking for CRLs belonging to a
1603 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1604 name and the CA's subject name differed in their string encoding (e.g.,
1605 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001606 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001607 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001608 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001609 incoming message buffer was placed within the first 64KiB of address
1610 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001611 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1612 potentially leading to an application crash or information disclosure.
1613 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1614 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001615 adversary to construct non-primes that would be erroneously accepted as
1616 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001617 security of TLS, but can matter in other contexts with numbers chosen
1618 potentially by an adversary that should be prime and can be validated.
1619 For example, the number of rounds was enough to securely generate RSA key
1620 pairs or Diffie-Hellman parameters, but was insufficient to validate
1621 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001622 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001623 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001624
Simon Butcherb35e59d2018-11-19 15:49:26 +00001625Features
1626 * Add support for temporarily suspending expensive ECC computations after
1627 some configurable amount of operations. This is intended to be used in
1628 constrained, single-threaded systems where ECC is time consuming and can
1629 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001630 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1631 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1632 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1633 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001634 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1635 including client authentication).
1636 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1637 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001638 MPI multiplications used in ECC and RSA cryptography. Contributed by
1639 Aurelien Jarno.
1640 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1641 signature always used a salt with the same length as the hash, and returned
1642 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001643 shorter. This allows the library to support all hash and signature sizes
1644 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001645 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001646 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001647
1648API Changes
1649 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1650 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001651 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001652 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001653
1654New deprecations
1655 * All module specific errors following the form
1656 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001657 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001658 platform error.
1659 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001660 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1661 by the equivalent plaform error.
1662 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001663 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001664 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001665
1666Bugfix
1667 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1668 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001669 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1670 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001671 * Fix a bug in the update function for SSL ticket keys which previously
1672 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001673 * Fix failure in hmac_drbg in the benchmark sample application, when
1674 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1675 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001676 which lead to accepting properly authenticated but improperly
1677 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001678 * Fix memory leak and freeing without initialization in the example
1679 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001680 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1681 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1682 * Zeroize memory used for buffering or reassembling handshake messages
1683 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001684 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1685 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1686 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001687 UTF8String. Previously, the use of the PrintableString format led to
1688 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001689 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1690 Thomas-Dee.
1691 * Fix compilation failure for configurations which use compile time
1692 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001693 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1694 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001695
Simon Butcherc86993e2018-09-27 09:48:54 +01001696Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001697 * Removed support for Yotta as a build tool.
1698 * Add tests for session resumption in DTLS.
1699 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001700 test the handling of large packets and small packets on the client side
1701 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001702 * Change the dtls_client and dtls_server samples to work by default over
1703 IPv6 and optionally by a build option over IPv4.
1704 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001705 calls, rather than Win32 API calls directly. This is necessary to avoid
1706 conflict with C runtime usage. Found and fixed by irwir.
1707 * Remember the string format of X.509 DN attributes when replicating
1708 X.509 DNs. Previously, DN attributes were always written in their default
1709 string format (mostly PrintableString), which could lead to CRTs being
1710 created which used PrintableStrings in the issuer field even though the
1711 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1712 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001713 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1714 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001715 * Improve documentation of mbedtls_ssl_get_verify_result().
1716 Fixes #517 reported by github-monoculture.
1717 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001718 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001719 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001720
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001721= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001722
Hanno Becker921b76d2018-09-05 16:21:36 +01001723API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001724 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001725 whose implementation should behave as a thread-safe version of gmtime().
1726 This allows users to configure such an implementation at compile time when
1727 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001728 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001729 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001730
1731Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001732 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001733 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001734
k-stachowiak21feae52018-07-09 14:42:35 +02001735= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001736
1737Security
1738 * Fix an issue in the X.509 module which could lead to a buffer overread
1739 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001740 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001741 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001742
1743Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001744 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001745 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001746 with the peer, as well as by a new per-connection MTU option, set using
1747 mbedtls_ssl_set_mtu().
1748 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001749 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1750 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001751 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001752 enabled by default.
1753 * Add support for buffering out-of-order handshake messages in DTLS.
1754 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001755 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1756 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001757
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001758API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001759 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001760 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001761
1762Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001763 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1764 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001765 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1766 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001767 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001768 Fix contributed by Espressif Systems.
1769 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001770 This improves compliance to RFC 4492, and as a result, solves
1771 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001772 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001773 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001774 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1775 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1776 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1777 with TLS versions 1.1 and earlier when the server requested authentication
1778 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001779 check in parsing the CertificateRequest message,
1780 introduced in Mbed TLS 2.12.0. Fixes #1954.
1781 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001782 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1783 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001784 * Fix undefined shifts with negative values in certificates parsing
1785 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001786 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001787 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001788 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1789
1790Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001791 * Copy headers preserving timestamps when doing a "make install".
1792 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001793 * Allow the forward declaration of public structs. Contributed by Dawid
1794 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001795 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001796 CCM test vectors from RAM.
1797 * Add support for buffering of out-of-order handshake messages.
1798 * Add warnings to the documentation of the HKDF module to reduce the risk
1799 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001800 functions. Fixes #1775. Reported by Brian J. Murray.
1801
Gilles Peskine104d8582018-06-27 10:57:33 +02001802= mbed TLS 2.12.0 branch released 2018-07-25
1803
1804Security
1805 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1806 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1807 partially recover the plaintext of messages under some conditions by
1808 exploiting timing measurements. With DTLS, the attacker could perform
1809 this recovery by sending many messages in the same connection. With TLS
1810 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1811 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1812 sent over connections manipulated by the attacker. Connections using GCM
1813 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1814 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1815 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001816 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1817 Shamir.
1818 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001819 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001820 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001821 plaintext of messages under some conditions by using a cache attack
1822 targeting an internal MD/SHA buffer. With TLS or if
1823 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1824 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1825 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001826 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1827 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1828 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1829 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1830 execute code on the local machine as well as manipulate network packets,
1831 to partially recover the plaintext of messages under some conditions (see
1832 previous entry) by using a cache attack targeting the SSL input record
1833 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001834 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001835 Eyal Ronen and Adi Shamir.
1836
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001837Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001838 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001839 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001840 by Daniel King.
1841 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01001842 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
1843 Contributed by Augustin Cavalier.
1844 * Make the receive and transmit buffers independent sizes, for situations
1845 where the outgoing buffer can be fixed at a smaller size than the incoming
1846 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03001847 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001848 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001849 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01001850 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
1851
1852Bugfix
niisatob7d39db2018-06-25 20:44:57 +09001853 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09001854 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01001855 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001856 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01001857 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
1858 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01001859 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
1860 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01001861 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
1862 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03001863 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
1864 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001865 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
1866 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01001867 * Added length checks to some TLS parsing functions. Found and fixed by
1868 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03001869 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03001870 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01001871 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
1872 the `#include` in the header files. Resolves #857
1873 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01001874 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
1875 Drozd. #1098
1876 * Fix decryption for zero length messages (which contain all padding) when a
1877 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
1878 such a message was wrongly reported as an invalid record and therefore lead
1879 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01001880 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
1881 contributed by Espressif Systems. Fixes #1632
1882 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001883 when the request_size argument is set to 0 as stated in the documentation.
1884 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01001885 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01001886 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001887 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001888
1889Changes
1890 * Fail when receiving a TLS alert message with an invalid length, or invalid
1891 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
1892 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001893 when calling with a NULL salt and non-zero salt_len. Contributed by
1894 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00001895 * Change the shebang line in Perl scripts to look up perl in the PATH.
1896 Contributed by fbrosson.
1897 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001898 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001899 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
1900
1901= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01001902
1903Features
1904 * Add additional block mode, OFB (Output Feedback), to the AES module and
1905 cipher abstraction module.
1906 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01001907 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
1908 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02001909 * Add support for the XTS block cipher mode with AES (AES-XTS).
1910 Contributed by Aorimn in pull request #414.
1911 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01001912 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01001913 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01001914
1915Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01001916 * Fix the cert_write example to handle certificates signed with elliptic
1917 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01001918 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
1919 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01001920 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01001921 Reported by rahmanih in #683
1922 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
1923
Simon Butcherb6a5bff2018-06-18 11:51:36 +01001924Changes
1925 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
1926 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001927 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01001928 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001929
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01001930= mbed TLS 2.10.0 branch released 2018-06-06
1931
1932Features
1933 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02001934 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00001935
1936API Changes
1937 * Extend the platform module with a util component that contains
1938 functionality shared by multiple Mbed TLS modules. At this stage
1939 platform_util.h (and its associated platform_util.c) only contain
1940 mbedtls_platform_zeroize(), which is a critical function from a security
1941 point of view. mbedtls_platform_zeroize() needs to be regularly tested
1942 against compilers to ensure that calls to it are not removed from the
1943 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01001944 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01001945 facilitate testing and maintenance.
1946
1947Bugfix
1948 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001949 build to fail. Found by zv-io. Fixes #1651.
1950
Moran Pekera64fba42018-02-25 13:29:03 +02001951Changes
1952 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001953 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01001954 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02001955
Simon Butcherf85c90a2017-07-27 15:11:52 +01001956= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01001957
1958Security
1959 * Fix an issue in the X.509 module which could lead to a buffer overread
1960 during certificate validation. Additionally, the issue could also lead to
1961 unnecessary callback checks being made or to some validation checks to be
1962 omitted. The overread could be triggered remotely, while the other issues
1963 would require a non DER-compliant certificate to be correctly signed by a
1964 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
1965 luocm. Fixes #825.
1966 * Fix the buffer length assertion in the ssl_parse_certificate_request()
1967 function which led to an arbitrary overread of the message buffer. The
1968 overreads could be caused by receiving a malformed message at the point
1969 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04001970 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01001971 data is output with the debug data.
1972 * Fix a client-side bug in the validation of the server's ciphersuite choice
1973 which could potentially lead to the client accepting a ciphersuite it didn't
1974 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001975 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01001976 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01001977
1978Features
1979 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01001980 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
1981 Suggested and contributed by jkivilin in pull request #394.
1982 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001983 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01001984 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
1985 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01001986
1987API Changes
1988 * Extend the public API with the function of mbedtls_net_poll() to allow user
1989 applications to wait for a network context to become ready before reading
1990 or writing.
1991 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02001992 a check for whether more more data is pending to be processed in the
1993 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01001994 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00001995 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01001996
Gilles Peskine08185402018-03-22 21:50:48 +01001997Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01001998 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
1999 contributed by Brian J Murray and David Brown.
2000 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01002001 in configurations that omit certain hashes or public-key algorithms.
2002 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02002003 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01002004 #1353
2005 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
2006 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
2007 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08002008 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01002009 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07002010 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01002011 unable to parse keys which had only the optional parameters field of the
2012 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
2013 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02002014 stated in the mbedtls_cipher_update() documentation. Contributed by
2015 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01002016 * Fix overriding and ignoring return values when parsing and writing to
2017 a file in pk_sign program. Found by kevlut in #1142.
2018 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
2019 where data needs to be fetched from the underlying transport in order
2020 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01002021 returned when unexpected messages were being discarded, ignoring that
2022 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02002023 in the internal buffers; these cases led to deadlocks when event-driven
2024 I/O was used. Found and reported by Hubert Mis in #772.
2025 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04002026 function which leads to a potential one byte overread of the message
2027 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002028 * Fix invalid buffer sizes passed to zlib during record compression and
2029 decompression.
2030 * Fix the soversion of libmbedcrypto to match the soversion of the
2031 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01002032 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002033 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
2034
Simon Butcherb03120a2018-04-30 16:40:25 +01002035Changes
2036 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01002037 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
2038 independently by Matthieu Volat and Arne Schwabe.
2039 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00002040 public-key algorithms. Includes contributions by Gert van Dijk.
2041 * Improve negative testing of X.509 parsing.
2042 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01002043 configurations where the feature is disabled. Found and fixed by Gergely
2044 Budai.
2045 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
2046 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01002047 instead incorrectly manipulates the configuration structure directly.
2048 Found and fix submitted by junyeonLEE in #1220.
2049 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02002050 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
2051 without PBES2. Fixed by Marcos Del Sol Vives.
2052 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01002053 for Curve25519 (other curves had it already). Contributed by Nicholas
2054 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01002055 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
2056 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01002057 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002058 Paul Sokolovsky in #1356.
2059 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01002060 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002061 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01002062 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02002063 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02002064 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
2065 by Alexey Skalozub in #405.
2066 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02002067 transmitting more than the required length, return an error. Raised by
2068 Sam O'Connor in #1245.
2069 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01002070 HMAC functions with non-HMAC ciphersuites. Independently contributed
2071 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02002072 * Improve security of RSA key generation by including criteria from
2073 FIPS 186-4. Contributed by Jethro Beekman. #1380
2074 * Declare functions in header files even when an alternative implementation
2075 of the corresponding module is activated by defining the corresponding
2076 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04002077 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002078 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00002079 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01002080
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002081= mbed TLS 2.8.0 branch released 2018-03-16
2082
2083Default behavior changes
2084 * The truncated HMAC extension now conforms to RFC 6066. This means
2085 that when both sides of a TLS connection negotiate the truncated
2086 HMAC extension, Mbed TLS can now interoperate with other
2087 compliant implementations, but this breaks interoperability with
2088 prior versions of Mbed TLS. To restore the old behavior, enable
2089 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
2090 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00002091 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002092
2093Security
2094 * Fix implementation of the truncated HMAC extension. The previous
2095 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01002096 HMAC key of a single, uninterrupted connection (with no
2097 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002098 * Verify results of RSA private key operations to defend
2099 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002100 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
2101 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01002102 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
2103 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00002104 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002105 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
2106
2107Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01002108 * Extend PKCS#8 interface by introducing support for the entire SHA
2109 algorithms family when encrypting private keys using PKCS#5 v2.0.
2110 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01002111 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002112 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00002113 * Add support for public keys encoded in PKCS#1 format. #1122
2114
2115New deprecations
2116 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01002117 MBEDTLS_ZLIB_SUPPORT).
2118
2119Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01002120 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02002121 Fixes #1358.
2122 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01002123 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
2124 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00002125 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01002126 daniel in the Mbed TLS forum. #1351
2127 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
2128 * Fix setting version TLSv1 as minimal version, even if TLS 1
2129 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03002130 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
2131 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03002132 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01002133 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02002134 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01002135 * In test_suite_pk, pass valid parameters when testing for hash length
2136 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01002137 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01002138 by Guido Vranken. #639
2139 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002140 * Fix X509 CRT parsing that would potentially accept an invalid tag when
2141 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002142 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
2143 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01002144 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
2145 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01002146 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
2147 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01002148 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
2149 Found through fuzz testing.
2150
2151Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01002152 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01002153 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01002154 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
2155 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02002156 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01002157 a migration path for those depending on the library's ABI.
2158 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01002159 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002160 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002161
Gilles Peskine28a0c722017-10-17 19:01:38 +02002162= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00002163
2164Security
2165 * Fix a heap corruption issue in the implementation of the truncated HMAC
2166 extension. When the truncated HMAC extension is enabled and CBC is used,
2167 sending a malicious application packet could be used to selectively corrupt
2168 6 bytes on the peer's heap, which could potentially lead to crash or remote
2169 code execution. The issue could be triggered remotely from either side in
2170 both TLS and DTLS. CVE-2018-0488
2171 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
2172 for the key size, which could potentially lead to crash or remote code
2173 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
2174 Qualcomm Technologies Inc. CVE-2018-0487
2175 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
2176 zeros.
2177 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01002178 64 KiB to the address of the SSL buffer and causing a wrap around.
2179 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
2180 default enabled) maximum fragment length extension is disabled in the
2181 config and the application data buffer passed to mbedtls_ssl_write
2182 is larger than the internal message buffer (16384 bytes by default), the
2183 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00002184 application layer can be forced into sending such large packets. The issue
2185 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
2186 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
2187 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01002188 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01002189 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03002190 * Ensure that buffers are cleared after use if they contain sensitive data.
2191 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01002192 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
2193 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002194 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
2195 leaking 1 bit of the private key. Reported by prashantkspatil.
2196 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
2197 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01002198 sake of saving memory, but potentially leading to slight timing
2199 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002200 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01002201 after keypair generation.
2202 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01002203 (server-side). Could result in application crash, but only if an ALPN
2204 name larger than 16 bytes had been configured on the server.
2205 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02002206 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002207 manner.
2208
Gilles Peskinec82fbb42017-12-15 15:01:27 +01002209Features
2210 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02002211 * The selftest program can execute a subset of the tests based on command
2212 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01002213 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00002214 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01002215 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01002216 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03002217 * Add support for alternative implementations of GCM, selected by the
2218 configuration flag MBEDTLS_GCM_ALT.
2219 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03002220 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03002221 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03002222 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002223 with alternative implementation:
2224 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03002225 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03002226 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
2227 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
2228 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002229 with an alternative implementation:
2230 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00002231 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02002232 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00002233 * Add mechanism to provide alternative implementation of the DHM module.
2234
2235API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00002236 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00002237 independent setup and export of RSA contexts. Most notably,
2238 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
2239 up RSA contexts from partial key material and having them completed to the
2240 needs of the implementation automatically. This allows to setup private RSA
2241 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
2242 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01002243 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
2244 implementations of the RSA interface declared in rsa.h.
2245 * The following functions in the message digest modules (MD2, MD4, MD5,
2246 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
2247 The new functions change the return type from void to int to allow
2248 returning error codes when using MBEDTLS_<MODULE>_ALT.
2249 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01002250 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002251 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03002252 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
2253
Simon Butcher55fc4e02018-02-05 01:09:13 +00002254New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01002255 * Deprecate usage of RSA primitives with non-matching key-type
2256 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00002257 * Direct manipulation of structure fields of RSA contexts is deprecated.
2258 Users are advised to use the extended RSA API instead.
2259 * Deprecate usage of message digest functions that return void
2260 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
2261 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01002262 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
2263 that can return an error code.
2264 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
2265 parameters from RFC 3526 or the newly added parameters from RFC 7919.
2266 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002267 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
2268 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01002269 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002270 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002271 accepting DHM parameters in binary form, matching the new constants.
2272
2273Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01002274 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01002275 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01002276 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03002277 Found by projectgus and Jethro Beekman, #836.
2278 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
2279 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00002280 renegotiated handshakes would only accept signatures using SHA-1
2281 regardless of the peer's preferences, or fail if SHA-1 was disabled.
2282 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02002283 dates on leap years with 100 and 400 intervals are handled correctly. Found
2284 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01002285 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
2286 accepted. Generating these signatures required the private key.
2287 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01002288 Found independently by Florian in the mbed TLS forum and by Mishamax.
2289 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00002290 * Fix variable used before assignment compilation warnings with IAR
2291 toolchain. Found by gkerrien38.
2292 * Fix unchecked return codes from AES, DES and 3DES functions in
2293 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
2294 If a call to one of the functions of the cryptographic primitive modules
2295 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01002296 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
2297 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01002298 * Include configuration file in md.h, to fix compilation warnings.
2299 Reported by aaronmdjones in #1001
2300 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01002301 writing routines that prevented these functions to work with alternative
2302 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01002303 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00002304 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01002305 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00002306 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01002307 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002308 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00002309 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01002310 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01002311 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01002312 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
2313 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03002314 * Add size-checks for record and handshake message content, securing
2315 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01002316 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002317 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01002318 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
2319 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00002320 * Fix possible memory leaks in mbedtls_gcm_self_test().
2321 * Added missing return code checks in mbedtls_aes_self_test().
2322 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
2323 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01002324 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01002325 beforehand.
2326 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002327 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
2328 Found and fixed by Martijn de Milliano.
2329 * Fix an issue in the cipher decryption with the mode
2330 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01002331 Note, this padding mode is not used by the TLS protocol. Found and fixed by
2332 Micha Kraus.
2333 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
2334 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01002335 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
2336 mbedtls_sha512_init() is called before operating on the relevant context
2337 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00002338 reset it. Found independently by ccli8 on Github.
2339 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01002340 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
2341 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002342
Hanno Becker86e52302017-10-05 09:08:53 +01002343Changes
2344 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00002345 and the message digest. Further, allow enabling/disabling of authority
2346 identifier, subject identifier and basic constraints extensions.
2347 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
2348 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01002349 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01002350 on GitHub.
2351 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01002352 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
2353 undeclared dependency of the RSA module on the ASN.1 module.
2354 * Update all internal usage of deprecated message digest functions to the
2355 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00002356 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01002357 everywhere except some locations in the ssl_tls.c module.
2358 * Improve CTR_DRBG error handling by propagating underlying AES errors.
2359 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01002360 modules where the software implementation can be replaced by a hardware
2361 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002362 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01002363 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02002364
Simon Butcherb060cc22017-07-28 01:04:34 +01002365= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01002366
Simon Butcherf85c90a2017-07-27 15:11:52 +01002367Security
2368 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01002369 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
2370 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01002371 (default: 8) intermediates, even when it was not trusted. This could be
2372 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01002373 (the default), the handshake was correctly aborted).
2374 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01002375 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002376 Found by Laurent Simon.
2377
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01002378Features
2379 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01002380 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01002381 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01002382 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
2383 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002384 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02002385 cryptographic acceleration hardware.
2386
2387API Changes
2388 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01002389 API consistent with mbed TLS 2.5.0. Specifically removed the inline
2390 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01002391 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
2392 by James Cowgill. #978
2393 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01002394 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01002395 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01002396 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02002397 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02002398 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01002399
2400Bugfix
2401 * 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 +02002402 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01002403 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01002404 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
2405 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02002406 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01002407 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01002408 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
2409 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01002410 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01002411 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01002412 * Fix a potential integer overflow in the version verification for DER
2413 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00002414 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002415 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00002416 * Fix potential integer overflow in the version verification for DER
2417 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01002418 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002419 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01002420 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01002421 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01002422 constructed certificates to bypass the certificate verification check.
2423 * Fix a call to the libc function time() to call the platform abstraction
2424 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02002425 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01002426 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01002427
Simon Butcher3f2557e2017-08-01 18:06:12 +01002428Changes
2429 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01002430 64-bit division. This is useful on embedded platforms where 64-bit division
2431 created a dependency on external libraries. #708
2432 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01002433 accelerator code in the library leaves concurrency handling to the
2434 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01002435 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
2436 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01002437 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01002438 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01002439 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01002440
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002441= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01002442
2443Security
2444 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
2445 The issue could only happen client-side with renegotiation enabled.
2446 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02002447 (if the application layer sent data read from mbedtls_ssl_read()
2448 back to the server or to a third party). Can be triggered remotely.
2449 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02002450 certificate verification. SHA-1 can be turned back on with a compile-time
2451 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02002452 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
2453 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002454 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01002455 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002456
2457Bugfix
2458 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01002459 valid C and they prevented the test from compiling in Visual Studio 2015
2460 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002461 * Fix insufficient support for signature-hash-algorithm extension,
2462 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02002463 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01002464 when sending the alert failed. The fix makes sure not to hide the error
2465 that triggered the alert.
2466 * Fix SSLv3 renegotiation behaviour and stop processing data received from
2467 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01002468 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01002469 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002470 * Accept empty trusted CA chain in authentication mode
2471 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
2472 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
2473 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
2474 reflect bad EC curves within verification result.
2475 * Fix bug that caused the modular inversion function to accept the invalid
2476 modulus 1 and therefore to hang. Found by blaufish. #641.
2477 * Fix incorrect sign computation in modular exponentiation when the base is
2478 a negative MPI. Previously the result was always negative. Found by Guido
2479 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02002480 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02002481 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002482
2483Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00002484 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01002485 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00002486 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02002487 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01002488 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002489
Janos Follath45182a02017-03-23 10:41:56 +00002490= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01002491
Janos Follath5a1c0e72017-06-16 09:00:07 +01002492Security
2493 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00002494 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
2495 Simon.
2496 * Add exponent blinding to RSA private operations as a countermeasure
2497 against side-channel attacks like the cache attack described in
2498 https://arxiv.org/abs/1702.08719v2.
2499 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01002500 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002501
2502Features
2503 * Add hardware acceleration support for the Elliptic Curve Point module.
2504 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01002505 replacing the core functions and adding and alternative, module level
2506 replacement support for enabling the extension of the interface.
2507 * Add a new configuration option to 'mbedtls_ssl_config' to enable
2508 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00002509 behaviour has not changed, namely every configured CAs name is included.
2510
2511API Changes
2512 * The following functions in the AES module have been deprecated and replaced
2513 by the functions shown below. The new functions change the return type from
2514 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
2515 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
2516 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002517 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
2518
2519Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01002520 * Remove macros from compat-1.3.h that correspond to deleted items from most
2521 recent versions of the library. Found by Kyle Keen.
2522 * Fixed issue in the Threading module that prevented mutexes from
2523 initialising. Found by sznaider. #667 #843
2524 * Add checks in the PK module for the RSA functions on 64-bit systems.
2525 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002526 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00002527 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002528
Janos Follath182013f2016-10-25 10:50:22 +01002529= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00002530
2531Security
2532 * Add checks to prevent signature forgeries for very large messages while
2533 using RSA through the PK module in 64-bit systems. The issue was caused by
2534 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00002535 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
2536 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
2537 * Fixed potential livelock during the parsing of a CRL in PEM format in
2538 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
2539 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01002540 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
2541 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00002542 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00002543 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
2544 Introduced by interoperability fix for #513.
2545 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00002546 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00002547 triggered remotely for example with a maliciously constructed certificate
2548 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00002549 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01002550 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00002551
2552Bugfix
2553 * Fix output certificate verification flags set by x509_crt_verify_top() when
2554 traversing a chain of trusted CA. The issue would cause both flags,
2555 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00002556 set when the verification conditions are not met regardless of the cause.
2557 Found by Harm Verhagen and inestlerode. #665 #561
2558 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00002559 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
2560 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00002561 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00002562 x509_csr.c that are reported when building mbed TLS with a config.h that
2563 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
2564 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
2565 would compare 64 bits of the record counter instead of 48 bits as indicated
2566 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01002567 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01002568 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01002569 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00002570 the input string in PEM format to extract the different components. Found
2571 by Eyal Itkin.
2572 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
2573 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2574 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
2575 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00002576 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
2577 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00002578 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
2579 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00002580 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
2581 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00002582 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
2583 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00002584 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
2585 fix proposed by Guido Vranken. #722
2586 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02002587 Studio 2015 as well as the files themselves, to remove a build warning
2588 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00002589 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
2590 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
2591 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00002592 number to write in hexadecimal is negative and requires an odd number of
2593 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002594 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00002595 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00002596
2597= mbed TLS 2.4.1 branch released 2016-12-13
2598
2599Changes
2600 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2601 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01002602 Authentication – October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03002603
Andres AG60dbc932016-09-02 15:23:48 +01002604= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01002605
2606Security
2607 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2608 with RFC-5116 and could lead to session key recovery in very long TLS
2609 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2610 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01002611 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01002612 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01002613 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01002614 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03002615 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01002616
2617Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03002618 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2619 NIST SP 800-38B, RFC-4493 and RFC-4615.
2620 * Added hardware entropy selftest to verify that the hardware entropy source
2621 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01002622 * Added a script to print build environment info for diagnostic use in test
2623 scripts, which is also now called by all.sh.
2624 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01002625 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01002626 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01002627 * Added a configuration file config-no-entropy.h that configures the subset of
2628 library features that do not require an entropy source.
2629 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03002630 to configure the minimum number of bytes for entropy sources using the
2631 mbedtls_hardware_poll() function.
2632
2633Bugfix
2634 * Fix for platform time abstraction to avoid dependency issues where a build
2635 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01002636 configuration consistency checks to check_config.h
2637 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03002638 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2639 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03002640 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2641 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01002642 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01002643 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01002644 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01002645 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01002646 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01002647 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01002648 * Fixed pthread implementation to avoid unintended double initialisations
2649 and double frees. Found by Niklas Amnebratt.
2650 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01002651 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2652 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01002653 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01002654 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002655 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002656 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01002657 mbedtls_gcm_finish(). Found by cmiatpaar. #602
2658 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01002659 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002660 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01002661 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
2662 Found by subramanyam-c. #626
2663 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01002664 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03002665 certificate. Found by teumas. #513
2666 * Fix compilation without MBEDTLS_SELF_TEST enabled.
2667
2668Changes
2669 * Extended test coverage of special cases, and added new timing test suite.
2670 * Removed self-tests from the basic-built-test.sh script, and added all
2671 missing self-tests to the test suites, to ensure self-tests are only
2672 executed once.
2673 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01002674 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01002675 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01002676 * Added optimization for code space for X.509/OID based on configured
2677 features. Contributed by Aviv Palivoda.
2678 * Renamed source file library/net.c to library/net_sockets.c to avoid
2679 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01002680 net.c. For consistency, the corresponding header file, net.h, is marked as
2681 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002682 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01002683 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002684
Janos Follathcc4eba72016-02-10 16:25:55 +00002685= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00002686
Janos Follath3218b212016-02-10 16:14:10 +00002687Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002688 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
2689 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002690 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01002691 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00002692 (not triggerable remotely in (D)TLS).
2693 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00002694 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002695 SSL/TLS.
2696
2697Features
2698 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002699 function.
2700
2701Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002702 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002703 arguments where the same (in-place doubling). Found and fixed by Janos
2704 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002705 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01002706 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00002707 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00002708 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
2709 ECDSA was disabled in config.h . The leak didn't occur by default.
2710 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01002711 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00002712 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002713 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00002714 buffer after DER certificates to be included in the raw representation.
2715 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01002716 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2717 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01002718 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002719 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01002720 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01002721 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002722 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002723 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
2724
2725Changes
2726 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002727 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01002728 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
2729 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01002730 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2731 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002732 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2733 ignored, as required by RFC6101.
2734
2735= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002736
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002737Security
Simon Butcher00923c12015-12-22 19:04:24 +00002738 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002739 allocate memory. Only used for certificate generation, not triggerable
2740 remotely in SSL/TLS. Found by Rafał Przywara. #367
2741 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002742 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00002743 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002744 https://www.mitls.org/pages/attacks/SLOTH
2745
2746Bugfix
2747 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2748 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00002749 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002750 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01002751 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002752 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002753 * Fix suboptimal handling of unexpected records that caused interop issues
2754 with some peers over unreliable links. Avoid dropping an entire DTLS
2755 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002756 drop the record and look at subsequent records (if any are present) in
2757 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00002758
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002759= mbed TLS 2.2.0 released 2015-11-04
2760
2761Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00002762 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002763 once and some allocation fails. Cannot be forced remotely. Found by Guido
2764 Vranken, Intelworks.
2765 * Fix potential heap corruption on Windows when
2766 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002767 triggered remotely. Found by Guido Vranken, Intelworks.
2768 * Fix potential buffer overflow in some asn1_write_xxx() functions.
2769 Cannot be triggered remotely unless you create X.509 certificates based
2770 on untrusted input or write keys of untrusted origin. Found by Guido
2771 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002772 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002773 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002774 Janos Follath. #280 and #319
2775
2776Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002777 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2778 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002779 * Added a key extraction callback to accees the master secret and key
2780 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00002781
2782Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002783 * Self-signed certificates were not excluded from pathlen counting,
2784 resulting in some valid X.509 being incorrectly rejected. Found and fix
2785 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002786 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002787 exchange. Found and fix provided by Chris Hammond. #270
2788 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002789 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002790 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
2791 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
2792 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002793 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002794 minimum key size for end-entity certificates with RSA keys. Found by
2795 Matthew Page of Scannex Electronics Ltd.
2796 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002797 Found by Kurt Danielson. #292
2798 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
2799 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01002800 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002801 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002802
2803Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002804 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2805 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002806
2807= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002808
2809Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01002810 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002811 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002812 Intelworks.
2813 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
2814 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2815 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01002816 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002817 * Fix stack buffer overflow in pkcs12 decryption (used by
2818 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
2819 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2820 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2821 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2822 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002823 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01002824 require reading a string of close to or larger than 2^62 bytes.
2825 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002826 on crafted PEM input data. Found and fix provided by Guido Vranken,
2827 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
2828 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01002829 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01002830 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002831 Intelworks. Not trigerrable remotely in TLS.
2832 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
2833 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01002834 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002835 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01002836 authentication against a crafted CA cert. Cannot be triggered remotely
2837 unless you allow third parties to pick trust CAs for client auth.
2838 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01002839
2840Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01002841 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01002842 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002843 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002844
2845Changes
2846 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
2847 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002848 * Fixed paths for check_config.h in example config files. (Found by bachp)
2849 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002850
2851= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002852
Simon Butchera1a11282015-09-14 21:30:40 +01002853Security
2854 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02002855 signatures. (Found by Florian Weimer, Red Hat.)
2856 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
2857 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01002858 tries to continue the handshake after it failed (a misuse of the API).
2859 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
2860 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02002861
2862Bugfix
2863 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
2864 * Fix off-by-one error in parsing Supported Point Format extension that
2865 caused some handshakes to fail.
2866
2867Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01002868 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002869 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002870 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002871 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02002872 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
2873 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002874 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002875 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
2876 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02002877
2878= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02002879
2880Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002881 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02002882 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002883
2884Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02002885 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02002886 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
2887 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02002888 * Fix bug when parsing a ServerHello without extensions (found by David
2889 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02002890 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
2891 (found by Benoit Lecocq).
2892 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02002893 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02002894 * Fix compile error with armcc 5 with --gnu option.
2895 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02002896 (found by robotanarchy) (#232).
2897 * Fix bug in Makefile that prevented from installing without building the
2898 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01002899 * Fix missing -static-libgcc when building shared libraries for Windows
2900 with make.
2901 * Fix link error when building shared libraries for Windows with make.
2902 * Fix error when loading libmbedtls.so.
2903 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
2904 be always used (found by dcb314) (#235)
2905 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002906 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02002907 Fredrik Axelsson) (#257)
2908 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002909 * Fix memory corruption on client with overlong PSK identity, around
2910 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
2911 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02002912 * Fix unused function warning when using MBEDTLS_MDx_ALT or
2913 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
2914 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01002915
2916Changes
2917 * The PEM parser now accepts a trailing space at end of lines (#226).
2918 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002919 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01002920 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01002921 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002922 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002923 (#220).
2924 * Prepend a "thread identifier" to debug messages (issue pointed out by
2925 Hugo Leisink) (#210).
2926 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
2927 length.
2928
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002929= mbed TLS 2.0.0 released 2015-07-13
2930
2931Features
2932 * Support for DTLS 1.0 and 1.2 (RFC 6347).
2933 * Ability to override core functions from MDx, SHAx, AES and DES modules
2934 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02002935 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002936 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02002937 preserve forward secrecy, and allows sharing across multiple contexts.
2938 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002939 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002940 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002941 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002942 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02002943 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02002944
2945API Changes
2946 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002947 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002948 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002949 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02002950 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002951 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002952 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002953 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02002954 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002955 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02002956 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002957 * The following _init() functions that could return errors have
2958 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002959 should generally be the first function called on this context after init:
2960 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002961 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002962 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02002963 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002964 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
2965 Note that for mbedtls_ssl_setup(), you need to be done setting up the
2966 ssl_config structure before calling it.
2967 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002968 ssl_set_session() and ssl_set_client_transport_id(), plus
2969 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002970 (see rename.pl and compat-1.3.h above) and their first argument's type
2971 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002972 * ssl_set_bio() changed signature (contexts merged, order switched, one
2973 additional callback for read-with-timeout).
2974 * The following functions have been introduced and must be used in callback
2975 implementations (SNI, PSK) instead of their *conf counterparts:
2976 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002977 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01002978 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002979 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01002980 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002981 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
2982 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02002983 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
2984 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002985 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002986 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002987 * mbedtls_ssl_conf_truncated_hmac() now returns void.
2988 * mbedtls_memory_buffer_alloc_init() now returns void.
2989 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002990 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002991 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01002992 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
2993 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
2994 * The following functions changed prototype to avoid an in-out length
2995 parameter:
2996 mbedtls_base64_encode()
2997 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02002998 mbedtls_mpi_write_string()
2999 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02003000 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02003001 changed type to "mbedtls_net_context *".
3002 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003003 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02003004 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02003005 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02003006 ecdsa_write_signature_det() was deprecated.
3007 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01003008 * Last argument of x509_crt_check_key_usage() and
3009 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
3010 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01003011 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02003012 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
3013 strings; use the new *_len variables instead of strlen().
3014 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00003015 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02003016 length parameter to include the terminating null byte for PEM input.
3017 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02003018 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003019 layer and the memory_buffer_alloc module changed accordingly.
3020 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02003021 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
3022 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003023 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
3024 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02003025 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003026 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
3027 Their 'port' argument type is changed to a string.
3028 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003029
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02003030Removals
3031 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02003032 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
3033 mbedtls_ecp_muladd().
3034 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02003035 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02003036 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003037 waiting function.
3038 * Removed test DHM parameters from the test certs module.
3039 * Removed the PBKDF2 module (use PKCS5).
3040 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
3041 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
3042 * Removed openssl.h (very partial OpenSSL compatibility layer).
3043 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
3044 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
3045 been removed (compiler is required to support 32-bit operations).
3046 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
3047 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003048 * Removed test program ssl_test, superseded by ssl-opt.sh.
3049 * Removed helper script active-config.pl
3050
3051New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003052 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003053 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003054
3055Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02003056 * Renamed a few headers to include _internal in the name. Those headers are
3057 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003058 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
3059 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01003060 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003061 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
3062 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003063 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003064 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02003065
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003066Default behavior changes
3067 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003068 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
3069 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01003070 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02003071 compile time.
3072 * The default authmode for SSL/TLS clients is now REQUIRED.
3073 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01003074 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003075 custom config.h
3076 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01003077 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02003078 chain verification.
3079 * Negotiation of truncated HMAC is now disabled by default on server too.
3080 * The following functions are now case-sensitive:
3081 mbedtls_cipher_info_from_string()
3082 mbedtls_ecp_curve_info_from_name()
3083 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003084 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003085 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02003086
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02003087Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01003088 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003089 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003090 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003091
3092API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003093 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
3094 new prototype, and mbedtls_ssl_set_read_timeout().
3095 * The following functions now return void:
3096 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02003097 mbedtls_ssl_conf_max_version()
3098 mbedtls_ssl_conf_min_version()
3099 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
3100 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02003101 an example implementation, see mbedtls_timing_delay_context and
3102 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003103 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003104 after a successful net_accept().
3105
3106Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003107 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
3108 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003109 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003110 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
3111
3112= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02003113
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01003114Security
3115 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02003116 extendedKeyUsage on the leaf certificate was lost (results not accessible
3117 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003118 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3119 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02003120
3121Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02003122 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02003123 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02003124 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01003125 * Add support for reading DH parameters with privateValueLength included
3126 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003127 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
3128 * Add support for id-at-uniqueIdentifier in X.509 names.
3129 * Add support for overriding snprintf() (except on Windows) and exit() in
3130 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00003131 * Add an option to use macros instead of function pointers in the platform
3132 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00003133 * Improved Makefiles for Windows targets by fixing library targets and making
3134 cross-compilation easier (thanks to Alon Bar-Lev).
3135 * The benchmark program also prints heap usage for public-key primitives
3136 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
3137 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
3138 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003139 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003140 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003141 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003142 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003143 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
3144 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01003145
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01003146Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01003147 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
3148 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02003149 * Fix bug in entropy.c when THREADING_C is also enabled that caused
3150 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02003151 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
3152 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02003153 * Fix bug in ssl_mail_client when password is longer that username (found
3154 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02003155 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
3156 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02003157 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
3158 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02003159 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02003160 doing it at runtime (using uname) rather that compile time.
3161 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
3162 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02003163 ssl_write() is called before the handshake is finished (introduced in
3164 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01003165 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01003166 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00003167 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3168 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00003169 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00003170 versions of mingw64 (found by kxjhlele).
3171 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00003172 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00003173 platforms.
3174 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
3175 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00003176 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02003177 in 1.3.10).
3178 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02003179 * Add missing dependency on SHA-256 in some x509 programs (reported by
3180 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003181 * Fix bug related to ssl_set_curves(): the client didn't check that the
3182 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02003183
3184Changes
3185 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02003186 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02003187 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003188 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003189 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00003190 * compat-1.2.h and openssl.h are deprecated.
3191 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003192 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00003193 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00003194 * ssl_set_own_cert() no longer calls pk_check_pair() since the
3195 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00003196 * Move from SHA-1 to SHA-256 in example programs using signatures
3197 (suggested by Thorsten Mühlfelder).
3198 * Remove some unneeded inclusions of header files from the standard library
3199 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003200 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02003201 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01003202 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003203
3204= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00003205Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003206 * NULL pointer dereference in the buffer-based allocator when the buffer is
3207 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003208 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003209 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003210 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003211 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003212 client certificate) (found using Codenomicon Defensics).
3213 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3214 (TLS server is not affected if it doesn't ask for a client certificate)
3215 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003216 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00003217 (TLS server is not affected if it doesn't ask for a client certificate)
3218 (found using Codenomicon Defensics).
3219 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003220 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003221 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003222
3223Features
3224 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003225 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01003226 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01003227 * Add function pk_check_pair() to test if public and private keys match.
3228 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01003229 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01003230 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02003231 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01003232 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01003233 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
3234 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003235 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01003236 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00003237 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
3238 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003239 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003240 ciphersuite/certificate.
3241
3242Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01003243 * Stack buffer overflow if ctr_drbg_update() is called with too large
3244 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003245 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
3246 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003247 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01003248 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01003249 by Julian Ospald).
3250 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00003251 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
3252 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00003253 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00003254 Peter Vaskovic).
3255 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00003256 * ssl_get_verify_result() now works even if the handshake was aborted due
3257 to a failed verification (found by Fredrik Axelsson).
3258 * Skip writing and parsing signature_algorithm extension if none of the
3259 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00003260 issue with some servers when a zero-length extension was sent. (Reported
3261 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003262 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01003263 (found by Hendrik van den Boogaard).
3264
3265Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01003266 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003267 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01003268 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01003269 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01003270 * Forbid repeated extensions in X.509 certificates.
3271 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01003272 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003273 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01003274 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01003275 * It is now possible to disable negotiation of truncated HMAC server-side
3276 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00003277 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003278 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02003279 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003280
3281= PolarSSL 1.3.9 released 2014-10-20
3282Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003283 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02003284 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
3285 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02003286 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02003287 (found using Codenomicon Defensics).
3288 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003289 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003290 Defensics).
3291
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02003292Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02003293 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02003294 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02003295 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02003296 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3297 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02003298 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003299 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
3300 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02003301 * ssl_read() could return non-application data records on server while
3302 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02003303 * Server-initiated renegotiation would fail with non-blocking I/O if the
3304 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02003305 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02003306 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02003307 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02003308 * x509_crt_parse() did not increase total_failed on PEM error
3309 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003310 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003311 Vialletelle).
3312
3313Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02003314 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
3315 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02003316 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
3317 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003318 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
3319 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02003320 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3321 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02003322 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003323 RSA keys.
3324 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003325 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02003326 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02003327
3328= PolarSSL 1.3.8 released 2014-07-11
3329Security
3330 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3331 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02003332 when a GCM suite was chosen.
3333
3334Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02003335 * Add CCM module and cipher mode to Cipher Layer
3336 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02003337 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02003338 modules (certificates, CRLs and CSRs).
3339 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02003340 * Add example config.h for PSK with CCM, optimized for low RAM usage.
3341 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02003342 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
3343 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02003344 * Add server-side enforcement of sent renegotiation requests
3345 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02003346 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02003347 ciphersuites to use and save some memory if the list is small.
3348
3349Changes
Paul Bakker34617722014-06-13 17:20:13 +02003350 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
3351 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02003352 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02003353 against unwanted compiler optimizations
3354 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02003355 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
3356 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02003357 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02003358 usage pattern
3359
Paul Bakker1ebc0c52014-05-22 15:47:58 +02003360Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02003361 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02003362 * Enforce alignment in the buffer allocator even if buffer is not aligned
3363 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02003364 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3365 size (found by TrustInSoft)
3366 * Fix WSAStartup() return value check (found by Peter Vaskovic)
3367 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02003368 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003369 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02003370 * Fix DER output of gen_key app (found by Gergely Budai)
3371 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003372 use with some ciphersuites and versions (RC4 in all versions, CBC with
3373 versions < TLS 1.1).
3374 * Very large records using more than 224 bytes of padding were incorrectly
3375 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02003376 * Very large records using less padding could cause a buffer overread of up
3377 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02003378 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
3379 been removed in 1.3.6.)
3380 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07003381 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02003382 1.3.6.)
3383 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02003384 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3385 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02003386 * Fix off-by-one error in parsing Supported Point Format extension that
3387 caused some handshakes to fail.
3388 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02003389 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02003390 (Failure rate <= 1/255 with common DHM moduli.)
3391 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02003392 * Fix base64_decode() to return and check length correctly (in case of
3393 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02003394 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02003395 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02003396
Paul Bakkerc73079a2014-04-25 16:34:30 +02003397= PolarSSL 1.3.7 released on 2014-05-02
3398Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02003399 * debug_set_log_mode() added to determine raw or full logging
3400 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02003401 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02003402 run-time
3403
3404Changes
Paul Bakker92478c32014-04-25 15:18:34 +02003405 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02003406 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02003407 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02003408 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02003409 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02003410 * Ciphersuites based on RC4 now have the lowest priority by default
3411
3412Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02003413 * Only iterate over actual certificates in ssl_write_certificate_request()
3414 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02003415 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02003416 Karger)
3417 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02003418 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
3419 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02003420 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02003421 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02003422 * rsa_check_pubkey() now allows an E up to N
3423 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02003424 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02003425 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00003426 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07003427 * Some parts of ssl_tls.c were compiled even when the module was disabled.
3428 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02003429 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02003430 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003431
Paul Bakker27e36d32014-04-08 12:33:37 +02003432= PolarSSL 1.3.6 released on 2014-04-11
3433
Paul Bakker1cfc4582014-04-09 15:25:13 +02003434Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003435 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02003436 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003437 * Enable verification of the keyUsage extension for CA and leaf
3438 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02003439 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02003440 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
3441
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02003442Changes
3443 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02003444 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02003445 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02003446 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003447 * Reject certificates with times not in UTC, per RFC 5280.
3448
3449Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02003450 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
3451 (Found by Watson Ladd.)
3452 * The notAfter date of some certificates was no longer checked since 1.3.5.
3453 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02003454 certificate. If the user-supplied chain contains only one certificates,
3455 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003456 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003457 TrustInSoft)
3458
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01003459Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02003460 * The length of various ClientKeyExchange messages was not properly checked.
3461 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02003462 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02003463 calculation of RR.
3464 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02003465 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
3466 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07003467 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
3468 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01003469 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
3470 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01003471 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02003472 error if the output buffer was just 1 byte too small.
3473 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02003474 * Calling pk_debug() on an RSA-alt key would segfault.
3475 * 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 +02003476 * Potential buffer overwrite in pem_write_buffer() because of low length
3477 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003478 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01003479 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003480
3481= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003482Features
Paul Bakker6a28e722014-02-06 13:41:55 +01003483 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01003484 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01003485 * Single Platform compatilibity layer (for memory / printf / fprintf)
3486 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003487 * Ability to force the entropy module to use SHA-256 as its basis
3488 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01003489 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01003490 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01003491 * Support for reading EC keys that use SpecifiedECDomain in some cases.
3492 * Entropy module now supports seed writing and reading
3493
Paul Bakker47703a02014-02-06 15:01:20 +01003494Changes
3495 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01003496 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01003497 now thread-safe if POLARSSL_THREADING_C defined
3498 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003499 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3500 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003501 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01003502 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003503 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003504 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3505
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01003506Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003507 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01003508 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01003509 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003510 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01003511 * Forbid sequence number wrapping
3512 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003513 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003514 TrustInSoft)
3515
3516Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003517 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01003518 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01003519 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01003520 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01003521 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01003522 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10003523 * Fixed dependency issues in test suite
3524 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003525 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3526 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01003527 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003528 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003529 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003530 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01003531 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003532 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01003533 * ssl_srv was leaking memory when client presented a timed out ticket
3534 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01003535 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3536 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01003537 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01003538 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003539 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01003540 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01003541
Paul Bakker0ac99ca2014-01-22 13:08:44 +01003542= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01003543Features
Paul Bakker556efba2014-01-24 15:38:12 +01003544 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01003545 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01003546 * Support for AES CFB8 mode
3547 * Support for deterministic ECDSA (RFC 6979)
3548
3549Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01003550 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01003551 * Replaced expired test certificate
3552 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01003553 * net module handles timeouts on blocking sockets better (found by Tilman
3554 Sauerbeck)
3555 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01003556
3557Security
Paul Bakker3eb96732014-01-22 13:08:19 +01003558 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01003559 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01003560
3561= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01003562Features
3563 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01003564 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01003565 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01003566 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01003567 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01003568 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01003569 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01003570 * SSL Pthread-based server example added (ssl_pthread_server)
3571
3572Changes
3573 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01003574 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01003575 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01003576 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01003577 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01003578 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01003579 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01003580 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003581 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01003582
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003583Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01003584 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01003585 * Fixed X.509 hostname comparison (with non-regular characters)
3586 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01003587 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01003588 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01003589 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01003590 * Memory leak in benchmark application
3591 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01003592 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3593 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003594 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01003595 ssl_write_certificate() (found by TrustInSoft)
3596
3597Security
3598 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003599 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01003600
3601= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01003602Features
Paul Bakker16421222013-10-28 14:37:09 +01003603 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01003604 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01003605 * Support for Camellia-GCM mode and ciphersuites
3606
Paul Bakkere1121b62013-10-31 14:37:37 +01003607Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01003608 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003609 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01003610 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01003611 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01003612
Paul Bakker677377f2013-10-28 12:54:26 +01003613Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003614 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01003615 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01003616 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01003617 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003618 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003619 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01003620 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01003621 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003622 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02003623
3624= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02003625Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02003626 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02003627 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02003628 * Support for RSA-PSK key-exchange and ciphersuites
3629
Paul Bakker16770332013-10-11 09:59:44 +02003630Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02003631 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003632 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02003633 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3634 * config.h is more script-friendly
3635
3636Bugfix
3637 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02003638 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003639 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02003640 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02003641 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02003642 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02003643 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003644 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01003645
3646= PolarSSL 1.3.0 released on 2013-10-01
3647Features
3648 * Elliptic Curve Cryptography module added
3649 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02003650 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3651 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003652 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003653 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02003654 * Ability to specify allowed ciphersuites based on the protocol version.
3655 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02003656 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02003657 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02003658 * Threading abstraction layer added (dummy / pthread / alternate)
3659 * Public Key abstraction layer added
3660 * Parsing Elliptic Curve keys
3661 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003662 * Support for max_fragment_length extension (RFC 6066)
3663 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02003664 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02003665 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
3666 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003667 * Certificate Request (CSR) generation with extensions (key_usage,
3668 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003669 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02003670 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00003671 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01003672 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01003673 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003674
3675Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003676 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3677 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01003678 * Introduced separate SSL Ciphersuites module that is based on
3679 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02003680 * Internals for SSL module adapted to have separate IV pointer that is
3681 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003682 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02003683 prototypes for the RSA sign and verify functions changed as a result
3684 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02003685 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003686 and maximum protocol version
3687 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02003688 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02003689 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02003690 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
3691 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02003692 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003693 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
3694 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003695 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003696 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02003697
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003698Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02003699 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02003700 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003701 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02003702 * Fixed file descriptor leaks
3703
3704Security
3705 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003706 (found by Cyril Arnaud and Pierre-Alain Fouque)
3707
3708
3709= Version 1.2.14 released 2015-05-??
3710
3711Security
3712 * Fix potential invalid memory read in the server, that allows a client to
3713 crash it remotely (found by Caj Larsson).
3714 * Fix potential invalid memory read in certificate parsing, that allows a
3715 client to crash the server remotely if client authentication is enabled
3716 (found using Codenomicon Defensics).
3717 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3718 https://dl.acm.org/citation.cfm?id=2714625
3719
3720Bugfix
3721 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3722 * Fix hardclock() (only used in the benchmarking program) with some
3723 versions of mingw64 (found by kxjhlele).
3724 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3725 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3726 platforms (found with Coverity Scan).
3727
3728= Version 1.2.13 released 2015-02-16
3729Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3730 this will be made in the 1.2 branch at this point.
3731
3732Security
3733 * Fix remotely-triggerable uninitialised pointer dereference caused by
3734 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3735 for a client certificate) (found using Codenomicon Defensics).
3736 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3737 (TLS server is not affected if it doesn't ask for a client certificate)
3738 (found using Codenomicon Defensics).
3739 * Fix potential stack overflow while parsing crafted X.509 certificates
3740 (TLS server is not affected if it doesn't ask for a client certificate)
3741 found using Codenomicon Defensics).
3742 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3743 (TLS server is not affected if it doesn't ask for a client certificate).
3744
3745Bugfix
3746 * Fix potential undefined behaviour in Camellia.
3747 * Fix memory leaks in PKCS#5 and PKCS#12.
3748 * Stack buffer overflow if ctr_drbg_update() is called with too large
3749 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3750 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3751 in 1.2.12).
3752 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3753 Peter Vaskovic).
3754 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3755 * ssl_get_verify_result() now works even if the handshake was aborted due
3756 to a failed verification (found by Fredrik Axelsson).
3757 * Skip writing and parsing signature_algorithm extension if none of the
3758 key exchanges enabled needs certificates. This fixes a possible interop
3759 issue with some servers when a zero-length extension was sent. (Reported
3760 by Peter Dettman.)
3761 * On a 0-length input, base64_encode() did not correctly set output length
3762 (found by Hendrik van den Boogaard).
3763
3764Changes
3765 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3766 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003767 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3768 length of an X.509 verification chain (default = 8).
3769= Version 1.2.12 released 2014-10-24
3770
3771Security
3772 * Remotely-triggerable memory leak when parsing some X.509 certificates
3773 (server is not affected if it doesn't ask for a client certificate).
3774 (Found using Codenomicon Defensics.)
3775
3776Bugfix
3777 * Fix potential bad read in parsing ServerHello (found by Adrien
3778 Vialletelle).
3779 * ssl_close_notify() could send more than one message in some circumstances
3780 with non-blocking I/O.
3781 * x509_crt_parse() did not increase total_failed on PEM error
3782 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3783 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3784 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3785 * ssl_read() could return non-application data records on server while
3786 renegotation was pending, and on client when a HelloRequest was received.
3787 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3788
3789Changes
3790 * X.509 certificates with more than one AttributeTypeAndValue per
3791 RelativeDistinguishedName are not accepted any more.
3792 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3793 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003794 * Accept spaces at end of line or end of buffer in base64_decode().
3795
3796= Version 1.2.11 released 2014-07-11
3797Features
3798 * Entropy module now supports seed writing and reading
3799
3800Changes
3801 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3802 * Improvements to the CMake build system, contributed by Julian Ospald.
3803 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3804 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3805 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3806 * Use UTC time to check certificate validity.
3807 * Reject certificates with times not in UTC, per RFC 5280.
3808 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3809 against unwanted compiler optimizations
3810
3811Security
3812 * Forbid change of server certificate during renegotiation to prevent
3813 "triple handshake" attack when authentication mode is optional (the
3814 attack was already impossible when authentication is required).
3815 * Check notBefore timestamp of certificates and CRLs from the future.
3816 * Forbid sequence number wrapping
3817 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3818 TrustInSoft)
3819 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3820 It was possible to crash the server (and client) using crafted messages
3821 when a GCM suite was chosen.
3822
3823Bugfix
3824 * Fixed X.509 hostname comparison (with non-regular characters)
3825 * SSL now gracefully handles missing RNG
3826 * crypt_and_hash app checks MAC before final decryption
3827 * Fixed x509_crt_parse_path() bug on Windows platforms
3828 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3829 TrustInSoft)
3830 * Fixed potential overflow in certificate size verification in
3831 ssl_write_certificate() (found by TrustInSoft)
3832 * Fix ASM format in bn_mul.h
3833 * Potential memory leak in bignum_selftest()
3834 * Replaced expired test certificate
3835 * ssl_mail_client now terminates lines with CRLF, instead of LF
3836 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3837 * Fixed testing with out-of-source builds using cmake
3838 * Fixed version-major intolerance in server
3839 * Fixed CMake symlinking on out-of-source builds
3840 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3841 Alex Wilson.)
3842 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3843 out_ctr failed
3844 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3845 of one of them failed
3846 * x509_get_current_time() uses localtime_r() to prevent thread issues
3847 * Some example server programs were not sending the close_notify alert.
3848 * Potential memory leak in mpi_exp_mod() when error occurs during
3849 calculation of RR.
3850 * Improve interoperability by not writing extension length in ClientHello
3851 when no extensions are present (found by Matthew Page)
3852 * rsa_check_pubkey() now allows an E up to N
3853 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
3854 * mpi_fill_random() was creating numbers larger than requested on
3855 big-endian platform when size was not an integer number of limbs
3856 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
3857 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3858 size (found by TrustInSoft)
3859 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
3860 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3861 interpret semicolons as comment delimiters (found by Barry K. Nathan).
3862 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
3863 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02003864 tight buffers)
3865
3866= Version 1.2.10 released 2013-10-07
3867Changes
3868 * Changed RSA blinding to a slower but thread-safe version
3869
3870Bugfix
3871 * Fixed memory leak in RSA as a result of introduction of blinding
3872 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003873 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02003874
3875= Version 1.2.9 released 2013-10-01
3876Changes
3877 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
3878
3879Bugfix
3880 * Fixed potential memory leak when failing to resume a session
3881 * Fixed potential file descriptor leaks (found by Remi Gacogne)
3882 * Minor fixes
3883
3884Security
3885 * Fixed potential heap buffer overflow on large hostname setting
3886 * Fixed potential negative value misinterpretation in load_file()
3887 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02003888 (found by Cyril Arnaud and Pierre-Alain Fouque)
3889
3890= Version 1.2.8 released 2013-06-19
3891Features
3892 * Parsing of PKCS#8 encrypted private key files
3893 * PKCS#12 PBE and derivation functions
3894 * Centralized module option values in config.h to allow user-defined
3895 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
3896
3897Changes
3898 * HAVEGE random generator disabled by default
3899 * Internally split up x509parse_key() into a (PEM) handler function
3900 and specific DER parser functions for the PKCS#1 and unencrypted
3901 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00003902 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02003903 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
3904 config.h)
3905 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
3906 old PBKDF2 module
3907
3908Bugfix
3909 * Secure renegotiation extension should only be sent in case client
3910 supports secure renegotiation
3911 * Fixed offset for cert_type list in ssl_parse_certificate_request()
3912 * Fixed const correctness issues that have no impact on the ABI
3913 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003914 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02003915 instead of the x509parse_crt() wrapper that can also parse PEM
3916 certificates
3917 * x509parse_crtpath() is now reentrant and uses more portable stat()
3918 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
3919 * Fixed values for 2-key Triple DES in cipher layer
3920 * ssl_write_certificate_request() can handle empty ca_chain
3921
3922Security
3923 * A possible DoS during the SSL Handshake, due to faulty parsing of
3924 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3925
3926= Version 1.2.7 released 2013-04-13
3927Features
3928 * Ability to specify allowed ciphersuites based on the protocol version.
3929
3930Changes
3931 * Default Blowfish keysize is now 128-bits
3932 * Test suites made smaller to accommodate Raspberry Pi
3933
3934Bugfix
3935 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01003936 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01003937
3938= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01003939Bugfix
3940 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01003941 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01003942 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01003943 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01003944 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01003945 * Fixed assembly code for ARM (Thumb and regular) for some compilers
3946
3947Changes
3948 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01003949 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
3950 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01003951 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
3952 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01003953 * Re-added handling for SSLv2 Client Hello when the define
3954 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01003955 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01003956 information (not the entire chain)
3957
3958Security
Paul Bakker8804f692013-02-28 18:06:26 +01003959 * Removed further timing differences during SSL message decryption in
3960 ssl_decrypt_buf()
3961 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01003962 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01003963 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003964
3965= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01003966Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003967 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01003968 * Debug messages about padding errors during SSL message decryption are
3969 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01003970 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003971 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01003972 POLARSSL_SSL_ALL_ALERT_MESSAGES
3973
3974Security
3975 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01003976 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01003977
Paul Bakker68884e32013-01-07 18:20:04 +01003978= Version 1.2.4 released 2013-01-25
3979Changes
Paul Bakker1961b702013-01-25 14:49:24 +01003980 * More advanced SSL ciphersuite representation and moved to more dynamic
3981 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01003982 * Added ssl_handshake_step() to allow single stepping the handshake process
3983
Paul Bakker21dca692013-01-03 11:41:08 +01003984Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01003985 * Memory leak when using RSA_PKCS_V21 operations fixed
3986 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01003987 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01003988 without DN list
3989
3990= Version 1.2.3 released 2012-11-26
3991Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003992 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01003993
3994= Version 1.2.2 released 2012-11-24
3995Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003996 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01003997 data
Paul Bakker7c90da92012-11-23 14:02:40 +01003998 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003999
4000Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01004001 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01004002 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00004003
4004= Version 1.2.1 released 2012-11-20
4005Changes
4006 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00004007 bottom-up (Peer cert depth is 0)
4008
Paul Bakkerd9374b02012-11-02 11:02:58 +00004009Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00004010 * Fixes for MSVC6
4011 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01004012 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4013 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00004014 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00004015 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004016 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00004017
4018= Version 1.2.0 released 2012-10-31
4019Features
4020 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00004021 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
4022 default!
4023 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00004024 * Added support for multi-domain certificates through the X509 Subject
4025 Alternative Name extension
4026 * Added preliminary ASN.1 buffer writing support
4027 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00004028 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00004029 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00004030 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00004031 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00004032 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004033 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004034 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00004035 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00004036 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00004037 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00004038 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00004039 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00004040 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00004041 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00004042 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00004043 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00004044 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00004045 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00004046 * Added option to add minimum accepted SSL/TLS protocol version
4047
Paul Bakker048d04e2012-02-12 17:31:04 +00004048Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00004049 * Removed redundant POLARSSL_DEBUG_MSG define
4050 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00004051 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00004052 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00004053 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00004054 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
4055 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00004056 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00004057 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00004058 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
4059 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00004060 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00004061 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00004062 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00004063 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00004064 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00004065
4066Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00004067 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00004068 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00004069 * Fixed potential heap corruption in x509_name allocation
4070 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004071 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00004072 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00004073 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00004074 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00004075 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00004076 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00004077 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00004078 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00004079 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00004080 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00004081
4082Security
Paul Bakker452d5322012-04-05 12:07:34 +00004083 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004084 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02004085
4086= Version 1.1.8 released on 2013-10-01
4087Bugfix
4088 * Fixed potential memory leak when failing to resume a session
4089 * Fixed potential file descriptor leaks
4090
4091Security
4092 * Potential buffer-overflow for ssl_read_record() (independently found by
4093 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
4094 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02004095 * Potential heap buffer overflow on large hostname setting
4096
4097= Version 1.1.7 released on 2013-06-19
4098Changes
4099 * HAVEGE random generator disabled by default
4100
4101Bugfix
4102 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00004103 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02004104 instead of the x509parse_crt() wrapper that can also parse PEM
4105 certificates
4106 * Fixed values for 2-key Triple DES in cipher layer
4107 * ssl_write_certificate_request() can handle empty ca_chain
4108
4109Security
4110 * A possible DoS during the SSL Handshake, due to faulty parsing of
4111 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4112
4113= Version 1.1.6 released on 2013-03-11
4114Bugfix
4115 * Fixed net_bind() for specified IP addresses on little endian systems
4116
4117Changes
4118 * Allow enabling of dummy error_strerror() to support some use-cases
4119 * Debug messages about padding errors during SSL message decryption are
4120 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
4121
4122Security
4123 * Removed timing differences during SSL message decryption in
4124 ssl_decrypt_buf()
4125 * Removed timing differences due to bad padding from
4126 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01004127 operations
4128
4129= Version 1.1.5 released on 2013-01-16
4130Bugfix
4131 * Fixed MPI assembly for SPARC64 platform
4132 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
4133 * mpi_add_abs() now correctly handles adding short numbers to long numbers
4134 with carry rollover
4135 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
4136 * Prevent reading over buffer boundaries on X509 certificate parsing
4137 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
4138 #52)
4139 * Fixed possible segfault in mpi_shift_r() (found by Manuel
4140 Pégourié-Gonnard)
4141 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4142 Pégourié-Gonnard)
4143 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
4144 * Memory leak when using RSA_PKCS_V21 operations fixed
4145 * Handle encryption with private key and decryption with public key as per
4146 RFC 2313
4147 * Fixes for MSVC6
4148
4149Security
4150 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00004151 Vanderbeken)
4152
4153= Version 1.1.4 released on 2012-05-31
4154Bugfix
4155 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
4156 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00004157 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
4158
4159= Version 1.1.3 released on 2012-04-29
4160Bugfix
4161 * Fixed random MPI generation to not generate more size than requested.
4162
4163= Version 1.1.2 released on 2012-04-26
4164Bugfix
4165 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
4166 Hui Dong)
4167
4168Security
4169 * Fixed potential memory corruption on miscrafted client messages (found by
4170 Frama-C team at CEA LIST)
4171 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00004172 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004173
4174= Version 1.1.1 released on 2012-01-23
4175Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00004176 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00004177 (Closes ticket #47, found by Hugo Leisink)
4178 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004179 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00004180 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00004181
4182= Version 1.1.0 released on 2011-12-22
4183Features
Darryl Green11999bb2018-03-13 15:22:58 +00004184 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00004185 SSL contexts without needing to set all non-connection-specific
4186 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00004187 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00004188 supported version to a server to help buggy server implementations.
4189 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00004190 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00004191 introspection functions (Closes ticket #40)
4192 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00004193 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00004194 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004195 entropy sources
4196
Paul Bakkerd246ed32011-10-06 13:18:27 +00004197Changes
4198 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00004199 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00004200 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00004201 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00004202 * Added an EXPLICIT tag number parameter to x509_get_ext()
4203 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00004204 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
4205 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00004206 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00004207 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00004208 * Loads of minimal changes to better support WINCE as a build target
4209 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00004210 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
4211 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00004212 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
4213 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01004214 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00004215 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00004216 a consequence in library code and programs
4217 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01004218 * Added permissive certificate parsing to x509parse_crt() and
4219 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00004220 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004221 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004222 * All error codes are now negative. Even on mermory failures and IO errors.
4223
4224Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00004225 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
4226 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00004227 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
4228 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00004229 * Allowed X509 key usage parsing to accept 4 byte values instead of the
4230 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00004231 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
4232 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00004233 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00004234 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00004235 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00004236 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004237 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00004238 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00004239
4240= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00004241Features
Paul Bakker343a8702011-06-09 14:27:58 +00004242 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00004243 * Added rsa_encrypt and rsa_decrypt simple example programs.
4244
4245Changes
4246 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00004247 codes instead of integers
4248
4249Bugfix
4250 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00004251 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004252
4253= Version 0.99-pre5 released on 2011-05-26
4254Features
Paul Bakkera35aa542013-03-06 17:06:21 +01004255 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00004256 (AES CTR, Camellia CTR, XTEA CBC) including the option to
4257 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00004258 * Functions requiring File System functions can now be disabled
4259 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00004260 * A error_strerror function() has been added to translate between
4261 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00004262 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004263 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00004264 * Added ssl_mail_client and ssl_fork_server as example programs.
4265
4266Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004267 * Major argument / variable rewrite. Introduced use of size_t
4268 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00004269 better unsigned / signed use. Renamed internal bigint types
4270 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00004271 * mpi_init() and mpi_free() now only accept a single MPI
4272 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01004273 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00004274 is now done with a PLUS instead of an OR as error codes
4275 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01004276 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
4277 net_recv() now returns 0 on EOF instead of
4278 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
4279 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00004280 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
4281 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01004282 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00004283 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00004284 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00004285
4286= Version 0.99-pre4 released on 2011-04-01
4287Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00004288 * Added support for PKCS#1 v2.1 encoding and thus support
4289 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00004290 * Reading of Public Key files incorporated into default x509
4291 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00004292 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004293 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01004294
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004295Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004296 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00004297 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01004298 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004299 does not zeroize memory in advance anymore. Use rsa_init()
4300 before parsing a key or keyfile!
4301
4302Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01004303 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00004304 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
4305 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00004306 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
4307 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004308 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00004309 length salt lengths
4310
Paul Bakker96743fc2011-02-12 14:30:57 +00004311= Version 0.99-pre3 released on 2011-02-28
4312This release replaces version 0.99-pre2 which had possible copyright issues.
4313Features
Paul Bakkera9507c02011-02-12 15:27:28 +00004314 * Parsing PEM private keys encrypted with DES and AES
4315 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00004316 * Added crl_app program to allow easy reading and
4317 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01004318
Paul Bakker96743fc2011-02-12 14:30:57 +00004319Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004320 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00004321 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00004322 systems only using DER encoding
4323
4324Bugfixes
4325 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00004326 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00004327 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004328 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004329 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004330 certificates (found by Mads Kiilerich)
4331 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01004332 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00004333 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00004334 found by Boris Krasnovskiy)
4335
4336Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01004337 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00004338 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00004339 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00004340
Paul Bakkerb63b0af2011-01-13 17:54:59 +00004341= Version 0.99-pre1 released on 2011-01-30
4342Features
Paul Bakker1b57b062011-01-06 15:48:19 +00004343Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00004344 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00004345 * Added reading of DHM context from memory and file
4346 * Improved X509 certificate parsing to include extended
4347 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00004348 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00004349 against the available CRLs
4350 * Detection for DES weak keys and parity bits added
4351 * Improvements to support integration in other
4352 applications:
4353 + Added generic message digest and cipher wrapper
4354 + Improved information about current capabilities,
4355 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00004356 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00004357 verification to allow external blacklisting
4358 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00004359 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00004360 libpkcs11-helper library
4361
4362Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00004363 * x509parse_time_expired() checks time in addition to
4364 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01004365 * The ciphers member of ssl_context and the cipher member
4366 of ssl_session have been renamed to ciphersuites and
4367 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00004368 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00004369 altogether
4370
4371= Version 0.14.0 released on 2010-08-16
4372Features
4373 * Added support for SSL_EDH_RSA_AES_128_SHA and
4374 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
4375 * Added compile-time and run-time version information
4376 * Expanded ssl_client2 arguments for more flexibility
4377 * Added support for TLS v1.1
4378
4379Changes
4380 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01004381 * Removed dependency on rand() in rsa_pkcs1_encrypt().
4382 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00004383 changed the prototype of rsa_pkcs1_encrypt(),
4384 rsa_init() and rsa_gen_key().
4385 * Some SSL defines were renamed in order to avoid
4386 future confusion
4387
4388Bug fixes
4389 * Fixed CMake out of source build for tests (found by
4390 kkert)
4391 * rsa_check_private() now supports PKCS1v2 keys as well
4392 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
4393 generator
4394
4395= Version 0.13.1 released on 2010-03-24
4396Bug fixes
4397 * Fixed Makefile in library that was mistakenly merged
4398 * Added missing const string fixes
4399
4400= Version 0.13.0 released on 2010-03-21
4401Features
4402 * Added option parsing for host and port selection to
4403 ssl_client2
4404 * Added support for GeneralizedTime in X509 parsing
4405 * Added cert_app program to allow easy reading and
4406 printing of X509 certificates from file or SSL
4407 connection.
4408
4409Changes
4410 * Added const correctness for main code base
4411 * X509 signature algorithm determination is now
4412 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01004413 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00004414 identical interface (returning int result values)
4415 * Changed ARC4 to use separate input/output buffer
4416 * Added reset function for HMAC context as speed-up
4417 for specific use-cases
4418
4419Bug fixes
4420 * Fixed bug resulting in failure to send the last
4421 certificate in the chain in ssl_write_certificate() and
4422 ssl_write_certificate_request() (found by fatbob)
4423 * Added small fixes for compiler warnings on a Mac
4424 (found by Frank de Brabander)
4425 * Fixed algorithmic bug in mpi_is_prime() (found by
4426 Smbat Tonoyan)
4427
4428= Version 0.12.1 released on 2009-10-04
4429Changes
4430 * Coverage test definitions now support 'depends_on'
4431 tagging system.
4432 * Tests requiring specific hashing algorithms now honor
4433 the defines.
4434
4435Bug fixes
4436 * Changed typo in #ifdef in x509parse.c (found
4437 by Eduardo)
4438
4439= Version 0.12.0 released on 2009-07-28
4440Features
4441 * Added CMake makefiles as alternative to regular Makefiles.
4442 * Added preliminary Code Coverage tests for AES, ARC4,
4443 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
4444 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
4445 and X509parse.
4446
4447Changes
4448 * Error codes are not (necessarily) negative. Keep
4449 this is mind when checking for errors.
4450 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
4451 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
4452 * Changed interface for AES and Camellia setkey functions
4453 to indicate invalid key lengths.
4454
4455Bug fixes
4456 * Fixed include location of endian.h on FreeBSD (found by
4457 Gabriel)
4458 * Fixed include location of endian.h and name clash on
4459 Apples (found by Martin van Hensbergen)
4460 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01004461 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00004462 (found by code coverage tests)
4463 * Prevented use of long long in bignum if
4464 POLARSSL_HAVE_LONGLONG not defined (found by Giles
4465 Bathgate).
4466 * Fixed incorrect handling of negative strings in
4467 mpi_read_string() (found by code coverage tests).
4468 * Fixed segfault on handling empty rsa_context in
4469 rsa_check_pubkey() and rsa_check_privkey() (found by
4470 code coverage tests).
4471 * Fixed incorrect handling of one single negative input
4472 value in mpi_add_abs() (found by code coverage tests).
4473 * Fixed incorrect handling of negative first input
4474 value in mpi_sub_abs() (found by code coverage tests).
4475 * Fixed incorrect handling of negative first input
4476 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
4477 change also affects mpi_write_string() (found by code
4478 coverage tests).
4479 * Corrected is_prime() results for 0, 1 and 2 (found by
4480 code coverage tests).
4481 * Fixed Camellia and XTEA for 64-bit Windows systems.
4482
4483= Version 0.11.1 released on 2009-05-17
4484 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
4485 SHA-512 in rsa_pkcs1_sign()
4486
4487= Version 0.11.0 released on 2009-05-03
4488 * Fixed a bug in mpi_gcd() so that it also works when both
4489 input numbers are even and added testcases to check
4490 (found by Pierre Habouzit).
4491 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
4492 one way hash functions with the PKCS#1 v1.5 signing and
4493 verification.
4494 * Fixed minor bug regarding mpi_gcd located within the
4495 POLARSSL_GENPRIME block.
4496 * Fixed minor memory leak in x509parse_crt() and added better
4497 handling of 'full' certificate chains (found by Mathias
4498 Olsson).
4499 * Centralized file opening and reading for x509 files into
4500 load_file()
4501 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01004502 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00004503 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
4504 padlock and timing code.
4505 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
4506 responsible for crashes and unwanted behaviour.
4507 * Added support for Certificate Revocation List (CRL) parsing.
4508 * Added support for CRL revocation to x509parse_verify() and
4509 SSL/TLS code.
4510 * Fixed compatibility of XTEA and Camellia on a 64-bit system
4511 (found by Felix von Leitner).
4512
4513= Version 0.10.0 released on 2009-01-12
4514 * Migrated XySSL to PolarSSL
4515 * Added XTEA symmetric cipher
4516 * Added Camellia symmetric cipher
4517 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
4518 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
4519 * Fixed dangerous bug that can cause a heap overflow in
4520 rsa_pkcs1_decrypt (found by Christophe Devine)
4521
4522================================================================
4523XySSL ChangeLog
4524
4525= Version 0.9 released on 2008-03-16
4526
4527 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
4528 * Enabled support for large files by default in aescrypt2.c
4529 * Preliminary openssl wrapper contributed by David Barrett
4530 * Fixed a bug in ssl_write() that caused the same payload to
4531 be sent twice in non-blocking mode when send returns EAGAIN
4532 * Fixed ssl_parse_client_hello(): session id and challenge must
4533 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
4534 * Added user-defined callback debug function (Krystian Kolodziej)
4535 * Before freeing a certificate, properly zero out all cert. data
4536 * Fixed the "mode" parameter so that encryption/decryption are
4537 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01004538 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00004539 * Correctly handle the case in padlock_xcryptcbc() when input or
4540 output data is non-aligned by falling back to the software
4541 implementation, as VIA Nehemiah cannot handle non-aligned buffers
4542 * Fixed a memory leak in x509parse_crt() which was reported by Greg
4543 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
4544 Matthew Page who reported several bugs
4545 * Fixed x509_get_ext() to accept some rare certificates which have
4546 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
4547 * Added support on the client side for the TLS "hostname" extension
4548 (patch contributed by David Patino)
4549 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
4550 string is passed as the CN (bug reported by spoofy)
4551 * Added an option to enable/disable the BN assembly code
4552 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
4553 * Disabled obsolete hash functions by default (MD2, MD4); updated
4554 selftest and benchmark to not test ciphers that have been disabled
4555 * Updated x509parse_cert_info() to correctly display byte 0 of the
4556 serial number, setup correct server port in the ssl client example
4557 * Fixed a critical denial-of-service with X.509 cert. verification:
4558 peer may cause xyssl to loop indefinitely by sending a certificate
4559 for which the RSA signature check fails (bug reported by Benoit)
4560 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
4561 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
4562 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
4563 * Modified ssl_parse_client_key_exchange() to protect against
4564 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
4565 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
4566 * Updated rsa_gen_key() so that ctx->N is always nbits in size
4567 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
4568 David Barrett and Dusan Semen
4569
4570= Version 0.8 released on 2007-10-20
4571
4572 * Modified the HMAC functions to handle keys larger
4573 than 64 bytes, thanks to Stephane Desneux and gary ng
4574 * Fixed ssl_read_record() to properly update the handshake
4575 message digests, which fixes IE6/IE7 client authentication
4576 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
4577 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
4578 * Added user-defined callbacks for handling I/O and sessions
4579 * Added lots of debugging output in the SSL/TLS functions
4580 * Added preliminary X.509 cert. writing by Pascal Vizeli
4581 * Added preliminary support for the VIA PadLock routines
4582 * Added AES-CFB mode of operation, contributed by chmike
4583 * Added an SSL/TLS stress testing program (ssl_test.c)
4584 * Updated the RSA PKCS#1 code to allow choosing between
4585 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
4586 * Updated ssl_read() to skip 0-length records from OpenSSL
4587 * Fixed the make install target to comply with *BSD make
4588 * Fixed a bug in mpi_read_binary() on 64-bit platforms
4589 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
4590 * Fixed a long standing memory leak in mpi_is_prime()
4591 * Replaced realloc with malloc in mpi_grow(), and set
4592 the sign of zero as positive in mpi_init() (reported
4593 by Jonathan M. McCune)
4594
4595= Version 0.7 released on 2007-07-07
4596
4597 * Added support for the MicroBlaze soft-core processor
4598 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4599 connections from being established with non-blocking I/O
4600 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4601 * Fixed the "PIC register ebx clobbered in asm" bug
4602 * Added HMAC starts/update/finish support functions
4603 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4604 * Fixed the net_set_*block routines, thanks to Andreas
4605 * Added a few demonstration programs: md5sum, sha1sum,
4606 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4607 * Added new bignum import and export helper functions
4608 * Rewrote README.txt in program/ssl/ca to better explain
4609 how to create a test PKI
4610
4611= Version 0.6 released on 2007-04-01
4612
4613 * Ciphers used in SSL/TLS can now be disabled at compile
4614 time, to reduce the memory footprint on embedded systems
4615 * Added multiply assembly code for the TriCore and modified
4616 havege_struct for this processor, thanks to David Patiño
4617 * Added multiply assembly code for 64-bit PowerPCs,
4618 thanks to Peking University and the OSU Open Source Lab
4619 * Added experimental support of Quantum Cryptography
4620 * Added support for autoconf, contributed by Arnaud Cornet
4621 * Fixed "long long" compilation issues on IA-64 and PPC64
4622 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4623 was not being correctly defined on ARM and MIPS
4624
4625= Version 0.5 released on 2007-03-01
4626
4627 * Added multiply assembly code for SPARC and Alpha
4628 * Added (beta) support for non-blocking I/O operations
4629 * Implemented session resuming and client authentication
4630 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4631 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4632 * Improved the performance of the EDH key exchange
4633 * Fixed a bug that caused valid packets with a payload
4634 size of 16384 bytes to be rejected
4635
4636= Version 0.4 released on 2007-02-01
4637
4638 * Added support for Ephemeral Diffie-Hellman key exchange
4639 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4640 * Various improvement to the modular exponentiation code
4641 * Rewrote the headers to generate the API docs with doxygen
4642 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4643 generated) and in ssl_parse_client_hello (max. client
4644 version was not properly set), thanks to Didier Rebeix
4645 * Fixed another bug in ssl_parse_client_hello: clients with
4646 cipherlists larger than 96 bytes were incorrectly rejected
4647 * Fixed a couple memory leak in x509_read.c
4648
4649= Version 0.3 released on 2007-01-01
4650
4651 * Added server-side SSLv3 and TLSv1.0 support
4652 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01004653 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00004654 * Fixed a bug in the CBC code, thanks to dowst; also,
4655 the bignum code is no longer dependent on long long
4656 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4657 * Updated timing.c for improved compatibility with i386
4658 and 486 processors, thanks to Arnaud Cornet
4659
4660= Version 0.2 released on 2006-12-01
4661
4662 * Updated timing.c to support ARM and MIPS arch
4663 * Updated the MPI code to support 8086 on MSVC 1.5
4664 * Added the copyright notice at the top of havege.h
4665 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4666 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4667 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4668 * Fixed a bug in rsa_check_privkey that would wrongly cause
4669 valid RSA keys to be dismissed (thanks to oldwolf)
4670 * Fixed a bug in mpi_is_prime that caused some primes to fail
4671 the Miller-Rabin primality test
4672
4673 I'd also like to thank Younès Hafri for the CRUX linux port,
4674 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4675 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00004676
4677= Version 0.1 released on 2006-11-01