blob: 27b58201c9ccdec76004554d6a32cc47efd8d9e8 [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
Minos Galanakis468d6e82023-10-03 22:28:07 +01003= Mbed TLS 2.28.5 branch released 2023-10-05
Minos Galanakis7de3eed2023-10-03 22:26:03 +01004
5Features
6 * The documentation of mbedtls_ecp_group now describes the optimized
7 representation of A for some curves. Fixes #8045.
8
9Security
10 * Developers using mbedtls_pkcs5_pbes2() or mbedtls_pkcs12_pbe() should
11 review the size of the output buffer passed to this function, and note
12 that the output after decryption may include CBC padding. Consider moving
13 to the new functions mbedtls_pkcs5_pbes2_ext() or mbedtls_pkcs12_pbe_ext()
14 which checks for overflow of the output buffer and reports the actual
15 length of the output.
16 * Improve padding calculations in CBC decryption, NIST key unwrapping and
17 RSA OAEP decryption. With the previous implementation, some compilers
18 (notably recent versions of Clang and IAR) could produce non-constant
19 time code, which could allow a padding oracle attack if the attacker
20 has access to precise timing measurements.
21 * Fix a buffer overread when parsing short TLS application data records in
22 ARC4 or null-cipher cipher suites. Credit to OSS-Fuzz.
23
24Bugfix
25 * Fix x509 certificate generation to conform to RFC 5480 / RFC 5758 when
26 using ECC key. The certificate was rejected by some crypto frameworks.
27 Fixes #2924.
28 * Fix some cases where mbedtls_mpi_mod_exp, RSA key construction or ECDSA
29 signature can silently return an incorrect result in low memory conditions.
30 * Fix IAR compiler warnings. Fixes #7873, #4300.
31 * Fix an issue when parsing an otherName subject alternative name into a
32 mbedtls_x509_san_other_name struct. The type-id of the otherName was not
33 copied to the struct. This meant that the struct had incomplete
34 information about the otherName SAN and contained uninitialized memory.
35 * Fix the detection of HardwareModuleName otherName SANs. These were being
36 detected by comparing the wrong field and the check was erroneously
37 inverted.
38 * Fix an error when MBEDTLS_ECDSA_SIGN_ALT is defined but not
39 MBEDTLS_ECDSA_VERIFY_ALT, causing ecdsa verify to fail. Fixes #7498.
40 * Functions in the ssl_cache module now return a negative MBEDTLS_ERR_xxx
41 error code on failure. Before, they returned 1 to indicate failure in
42 some cases involving a missing entry or a full cache.
43
44Changes
45 * In configurations with ARIA or Camellia but not AES, the value of
46 MBEDTLS_CIPHER_BLKSIZE_MAX was 8, rather than 16 as the name might
47 suggest. This did not affect any library code, because this macro was
48 only used in relation with CMAC which does not support these ciphers.
49 Its value is now 16 if ARIA or Camellia are present. This may affect
50 application code that uses this macro.
51
Dave Rodgmanccba2b72023-08-02 14:47:25 +010052= Mbed TLS 2.28.4 branch released 2023-08-04
53
54Features
55 * Allow MBEDTLS_CONFIG_FILE and MBEDTLS_USER_CONFIG_FILE to be set by
56 setting the CMake variable of the same name at configuration time.
57
58Bugfix
59 * Fix crypt_and_hash decryption fail when used with a stream cipher
60 mode of operation, due to the input not being a multiple of the block
61 size. Resolves #7417.
62 * Fix a bug where mbedtls_x509_string_to_names() would return success
63 when given a invalid name string, if it did not contain '=' or ','.
64 * Fix missing PSA initialization in sample programs when
65 MBEDTLS_USE_PSA_CRYPTO is enabled.
66 * Fix clang and armclang compilation error when targeting certain Arm
67 M-class CPUs (Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M23,
68 SecurCore SC000). Fixes #1077.
69 * Fixed an issue that caused compile errors when using CMake and the IAR
70 toolchain.
71 * Fix the build with MBEDTLS_PSA_INJECT_ENTROPY. Fixes #7516.
72 * Fix builds on Windows with clang.
73 * Fix compilation warnings in aes.c for certain combinations
74 of configuration options.
75 * Fix a compilation error on some platforms when including mbedtls/ssl.h
76 with all TLS support disabled. Fixes #6628.
77
Dave Rodgmanb0eedb42023-08-03 13:29:22 +010078Changes
79 * Update test data to avoid failures of unit tests after 2023-08-07, and
80 update expiring certififcates in the certs module.
81
Paul Elliottf18db1f2023-03-23 11:23:35 +000082= Mbed TLS 2.28.3 branch released 2023-03-28
83
84Features
85 * Use HOSTCC (if it is set) when compiling C code during generation of the
86 configuration-independent files. This allows them to be generated when
87 CC is set for cross compilation.
88 * AES-NI is now supported with Visual Studio.
89 * AES-NI is now supported in 32-bit builds, or when MBEDTLS_HAVE_ASM
90 is disabled, when compiling with GCC or Clang or a compatible compiler
91 for a target CPU that supports the requisite instructions (for example
92 gcc -m32 -msse2 -maes -mpclmul). (Generic x86 builds with GCC-like
93 compilers still require MBEDTLS_HAVE_ASM and a 64-bit target.)
94
95Security
96 * MBEDTLS_AESNI_C, which is enabled by default, was silently ignored on
97 builds that couldn't compile the GCC-style assembly implementation
98 (most notably builds with Visual Studio), leaving them vulnerable to
99 timing side-channel attacks. There is now an intrinsics-based AES-NI
100 implementation as a fallback for when the assembly one cannot be used.
101
102Bugfix
103 * Fix a build issue on Windows where the source and build directory could
104 not be on different drives (#5751).
105 * Fix possible integer overflow in mbedtls_timing_hardclock(), which
106 could cause a crash for certain platforms & compiler options.
107 * Fix IAR compiler warnings. Fixes #6924.
108 * Fix a bug in the build where directory names containing spaces were
109 causing generate_errors.pl to error out resulting in a build failure.
110 Fixes issue #6879.
111 * Fix compile error where MBEDTLS_RSA_C and MBEDTLS_X509_CRT_WRITE_C are
112 defined, but MBEDTLS_PK_RSA_ALT_SUPPORT is not defined. Fixes #3174.
113 * Fix a build issue when defining MBEDTLS_TIMING_ALT and MBEDTLS_SELF_TEST.
114 The library would not link if the user didn't provide an external self-test
115 function. The self-test is now provided regardless of the choice of
116 internal/alternative timing implementation. Fixes #6923.
117 * mbedtls_x509write_crt_set_serial() now explicitly rejects serial numbers
118 whose binary representation is longer than 20 bytes. This was already
119 forbidden by the standard (RFC5280 - section 4.1.2.2) and now it's being
120 enforced also at code level.
121 * Fix potential undefined behavior in mbedtls_mpi_sub_abs(). Reported by
122 Pascal Cuoq using TrustInSoft Analyzer in #6701; observed independently by
123 Aaron Ucko under Valgrind.
124 * Fix behavior of certain sample programs which could, when run with no
125 arguments, access uninitialized memory in some cases. Fixes #6700 (which
126 was found by TrustInSoft Analyzer during REDOCS'22) and #1120.
127 * Fix build errors in test programs when MBEDTLS_CERTS_C is disabled.
128 Fixes #6243.
129 * Fix parsing of X.509 SubjectAlternativeName extension. Previously,
130 malformed alternative name components were not caught during initial
131 certificate parsing, but only on subsequent calls to
132 mbedtls_x509_parse_subject_alt_name(). Fixes #2838.
133 * Fix bug in conversion from OID to string in
134 mbedtls_oid_get_numeric_string(). OIDs such as 2.40.0.25 are now printed
135 correctly.
136 * Reject OIDs with overlong-encoded subidentifiers when converting
137 them to a string.
138 * Reject OIDs with subidentifier values exceeding UINT_MAX. Such
139 subidentifiers can be valid, but Mbed TLS cannot currently handle them.
140 * Reject OIDs that have unterminated subidentifiers, or (equivalently)
141 have the most-significant bit set in their last byte.
142 * Silence a warning about an unused local variable in bignum.c on
143 some architectures. Fixes #7166.
144 * Silence warnings from clang -Wdocumentation about empty \retval
145 descriptions, which started appearing with Clang 15. Fixes #6960.
146 * Fix undefined behavior in mbedtls_ssl_read() and mbedtls_ssl_write() if
147 len argument is 0 and buffer is NULL.
148
149Changes
150 * The C code follows a new coding style. This is transparent for users but
151 affects contributors and maintainers of local patches. For more
152 information, see
153 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/rewrite-branch-for-coding-style/
154 * Changed the default MBEDTLS_ECP_WINDOW_SIZE from 6 to 2.
155 As tested in issue 6790, the correlation between this define and
156 RSA decryption performance has changed lately due to security fixes.
157 To fix the performance degradation when using default values the
158 window was reduced from 6 to 2, a value that gives the best or close
159 to best results when tested on Cortex-M4 and Intel i7.
160
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000161= Mbed TLS 2.28.2 branch released 2022-12-14
162
163Security
164 * Fix potential heap buffer overread and overwrite in DTLS if
165 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
166 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000167 * Fix an issue where an adversary with access to precise enough information
168 about memory accesses (typically, an untrusted operating system attacking
169 a secure enclave) could recover an RSA private key after observing the
170 victim performing a single private-key operation if the window size used
171 for the exponentiation was 3 or smaller. Found and reported by Zili KOU,
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000172 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
173 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
174 and Test in Europe 2023.
175
176Bugfix
177 * Fix a long-standing build failure when building x86 PIC code with old
178 gcc (4.x). The code will be slower, but will compile. We do however
179 recommend upgrading to a more recent compiler instead. Fixes #1910.
180 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
181 Contributed by Kazuyuki Kimura to fix #2020.
182 * Use double quotes to include private header file psa_crypto_cipher.h.
183 Fixes 'file not found with <angled> include' error
184 when building with Xcode.
185 * Fix handling of broken symlinks when loading certificates using
186 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
187 broken link is encountered, skip the broken link and continue parsing
188 other certificate files. Contributed by Eduardo Silva in #2602.
189 * Fix a compilation error when using CMake with an IAR toolchain.
190 Fixes #5964.
Aditya Deshpanded6f774f2022-12-09 12:52:43 +0000191 * Fix bugs and missing dependencies when building and testing
192 configurations with only one encryption type enabled in TLS 1.2.
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000193 * Provide the missing definition of mbedtls_setbuf() in some configurations
194 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
195 * Fix compilation errors when trying to build with
196 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
aditya-deshpande-armbf864162022-12-09 10:36:50 +0000197 * Fix memory leak in ssl_parse_certificate_request() caused by
198 mbedtls_x509_get_name() not freeing allocated objects in case of error.
199 Change mbedtls_x509_get_name() to clean up allocated objects on error.
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000200 * Fix checks on PK in check_config.h for builds with PSA and RSA. This does
201 not change which builds actually work, only moving a link-time error to
202 an early check.
203 * Fix ECDSA verification, where it was not always validating the
204 public key. This bug meant that it was possible to verify a
205 signature with an invalid public key, in some cases. Reported by
206 Guido Vranken using Cryptofuzz in #4420.
207 * Fix a possible null pointer dereference if a memory allocation fails
208 in TLS PRF code. Reported by Michael Madsen in #6516.
209 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
210 bytes when parsing certificates containing a binary RFC 4108
211 HardwareModuleName as a Subject Alternative Name extension. Hardware
212 serial numbers are now rendered in hex format. Fixes #6262.
213 * Fix bug in error reporting in dh_genprime.c where upon failure,
214 the error code returned by mbedtls_mpi_write_file() is overwritten
215 and therefore not printed.
216 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
217 with A > 0 created an unintended representation of the value 0 which was
218 not processed correctly by some bignum operations. Fix this. This had no
219 consequence on cryptography code, but might affect applications that call
220 bignum directly and use negative numbers.
221 * Fix undefined behavior (typically harmless in practice) of
222 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
223 when both operands are 0 and the left operand is represented with 0 limbs.
224 * Fix undefined behavior (typically harmless in practice) when some bignum
225 functions receive the most negative value of mbedtls_mpi_sint. Credit
226 to OSS-Fuzz. Fixes #6597.
227 * Fix undefined behavior (typically harmless in practice) in PSA ECB
228 encryption and decryption.
229
Dave Rodgmanfa827b42022-07-06 17:04:24 +0100230= Mbed TLS 2.28.1 branch released 2022-07-11
Dave Rodgman6743ec42022-07-06 16:45:41 +0100231
232Default behavior changes
233 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
234 for IV lengths other than 12. The library was silently overwriting this
235 length with 12, but did not inform the caller about it. Fixes #4301.
236
237Features
238 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
239 feature requirements in the file named by the new macro
240 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
241 Furthermore you may name an additional file to include after the main
242 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
243
244Security
245 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
246 module before freeing them. These buffers contain secret key material, and
247 could thus potentially leak the key through freed heap.
248 * Fix a potential heap buffer overread in TLS 1.2 server-side when
249 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
250 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
251 is selected. This may result in an application crash or potentially an
252 information leak.
253 * Fix a buffer overread in DTLS ClientHello parsing in servers with
254 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
255 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
256 after the end of the SSL input buffer. The buffer overread only happens
257 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
258 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
259 and possibly up to 571 bytes with a custom cookie check function.
260 Reported by the Cybeats PSI Team.
261
262Bugfix
263 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
264 * Fix several bugs (warnings, compiler and linker errors, test failures)
265 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
266 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
267 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
268 client would fail to check that the curve selected by the server for
269 ECDHE was indeed one that was offered. As a result, the client would
270 accept any curve that it supported, even if that curve was not allowed
271 according to its configuration. Fixes #5291.
272 * Fix unit tests that used 0 as the file UID. This failed on some
273 implementations of PSA ITS. Fixes #3838.
274 * Fix API violation in mbedtls_md_process() test by adding a call to
275 mbedtls_md_starts(). Fixes #2227.
276 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
277 to catch bad uses of time.h.
278 * Fix the library search path when building a shared library with CMake
279 on Windows.
280 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
281 potentially leading to corrupted alert messages being sent in case
282 the function needs to be re-called after initially returning
283 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
284 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but none of
285 MBEDTLS_SSL_HW_RECORD_ACCEL, MBEDTLS_SSL_EXPORT_KEYS or MBEDTLS_DEBUG_C,
286 DTLS handshakes using CID would crash due to a null pointer dereference.
287 Fix this. Fixes #3998.
288 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
289 documentation stated that the `allowed_pks` field applies to signatures
290 only, but in fact it does apply to the public key type of the end entity
291 certificate, too. Fixes #1992.
292 * Fix PSA cipher multipart operations using ARC4. Previously, an IV was
293 required but discarded. Now, an IV is rejected, as it should be.
294 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
295 not NULL and val_len is zero.
296 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
297 applicable. Fixes #5735.
298 * Fix a bug in the x25519 example program where the removal of
299 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
300 #3191.
301 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
302 GeneralizedTime. Fixes #5465.
Dave Rodgmanfa827b42022-07-06 17:04:24 +0100303 * Fix order value of curve x448.
Dave Rodgman6743ec42022-07-06 16:45:41 +0100304 * Fix string representation of DNs when outputting values containing commas
305 and other special characters, conforming to RFC 1779. Fixes #769.
306 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
307 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
308 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
309 memory conditions.
310 * Fix server connection identifier setting for outgoing encrypted records
311 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
312 connection identifier, the Mbed TLS client now properly sends the server
313 connection identifier in encrypted record headers. Fix #5872.
314 * Fix a null pointer dereference when performing some operations on zero
315 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
316 by 2, and mbedtls_mpi_write_string() in base 2).
317 * Fix record sizes larger than 16384 being sometimes accepted despite being
318 non-compliant. This could not lead to a buffer overflow. In particular,
319 application data size was already checked correctly.
320
321Changes
322 * Assume source files are in UTF-8 when using MSVC with CMake.
323
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000324= mbed TLS 2.28.0 branch released 2021-12-17
Dave Rodgman0798a822021-12-15 11:48:21 +0000325
326API changes
327 * Some fields of mbedtls_ssl_session and mbedtls_ssl_config are in a
328 different order. This only affects applications that define such
329 structures directly or serialize them.
330
331Requirement changes
332 * Sign-magnitude and one's complement representations for signed integers are
333 not supported. Two's complement is the only supported representation.
334
335Removals
336 * Remove config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES,
337 which allowed SHA-1 in the default TLS configuration for certificate
338 signing. It was intended to facilitate the transition in environments
339 with SHA-1 certificates. SHA-1 is considered a weak message digest and
340 its use constitutes a security risk.
341 * Remove the partial support for running unit tests via Greentea on Mbed OS,
342 which had been unmaintained since 2018.
343
344Features
345 * The identifier of the CID TLS extension can be configured by defining
346 MBEDTLS_TLS_EXT_CID at compile time.
347 * Warn if errors from certain functions are ignored. This is currently
348 supported on GCC-like compilers and on MSVC and can be configured through
349 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
350 (where supported) for critical functions where ignoring the return
351 value is almost always a bug. Enable the new configuration option
352 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
353 is currently implemented in the AES, DES and md modules, and will be
354 extended to other modules in the future.
355 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
356 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000357 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Dave Rodgman0798a822021-12-15 11:48:21 +0000358 * Add PSA API definition for ARIA.
359
360Security
361 * Zeroize several intermediate variables used to calculate the expected
362 value when verifying a MAC or AEAD tag. This hardens the library in
363 case the value leaks through a memory disclosure vulnerability. For
364 example, a memory disclosure vulnerability could have allowed a
365 man-in-the-middle to inject fake ciphertext into a DTLS connection.
366 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
367 from the output buffer. This fixes a potential policy bypass or decryption
368 oracle vulnerability if the output buffer is in memory that is shared with
369 an untrusted application.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000370 * Fix a double-free that happened after mbedtls_ssl_set_session() or
371 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
372 (out of memory). After that, calling mbedtls_ssl_session_free()
373 and mbedtls_ssl_free() would cause an internal session buffer to
374 be free()'d twice.
Dave Rodgman0798a822021-12-15 11:48:21 +0000375
376Bugfix
377 * Stop using reserved identifiers as local variables. Fixes #4630.
378 * The GNU makefiles invoke python3 in preference to python except on Windows.
379 The check was accidentally not performed when cross-compiling for Windows
380 on Linux. Fix this. Fixes #4774.
381 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
382 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
383 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
384 * Don't use the obsolete header path sys/fcntl.h in unit tests.
385 These header files cause compilation errors in musl.
386 Fixes #4969.
387 * Fix missing constraints on x86_64 and aarch64 assembly code
388 for bignum multiplication that broke some bignum operations with
389 (at least) Clang 12.
390 Fixes #4116, #4786, #4917, #4962.
391 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
392 * Failures of alternative implementations of AES or DES single-block
393 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
394 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
395 This does not concern the implementation provided with Mbed TLS,
396 where this function cannot fail, or full-module replacements with
397 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
398 * Some failures of HMAC operations were ignored. These failures could only
399 happen with an alternative implementation of the underlying hash module.
400 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
401 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
402 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
403 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
404 This algorithm now accepts only the same salt length for verification
405 that it produces when signing, as documented. Use the new algorithm
406 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
407 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
408 for algorithm values that fully encode the hashing step, as per the PSA
409 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
410 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
411 all algorithms that can be used with psa_{sign,verify}_hash(), including
412 these two.
413 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
414 not to list other shared libraries they need.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000415 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
416 exceeds 2^32. Fixes #4884.
Dave Rodgman0798a822021-12-15 11:48:21 +0000417 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
418 version 11.
419 * Fix the build when no SHA2 module is included. Fixes #4930.
420 * Fix the build when only the bignum module is included. Fixes #4929.
421 * Fix a potential invalid pointer dereference and infinite loop bugs in
422 pkcs12 functions when the password is empty. Fix the documentation to
423 better describe the inputs to these functions and their possible values.
424 Fixes #5136.
Dave Rodgman0798a822021-12-15 11:48:21 +0000425 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
426 operations psa_mac_compute() and psa_mac_sign_setup().
427 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
428 operations psa_mac_verify() and psa_mac_verify_setup().
429
430Changes
431 * Set config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE to be
432 disabled by default.
433 * Improve the performance of base64 constant-flow code. The result is still
434 slower than the original non-constant-flow implementation, but much faster
435 than the previous constant-flow implementation. Fixes #4814.
436 * Indicate in the error returned if the nonce length used with
437 ChaCha20-Poly1305 is invalid, and not just unsupported.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000438 * The mbedcrypto library includes a new source code module constant_time.c,
439 containing various functions meant to resist timing side channel attacks.
440 This module does not have a separate configuration option, and functions
441 from this module will be included in the build as required. Currently
442 most of the interface of this module is private and may change at any
443 time.
Dave Rodgman0798a822021-12-15 11:48:21 +0000444
Paul Elliottd925ee02021-07-01 17:58:07 +0100445= mbed TLS 2.27.0 branch released 2021-07-07
Paul Elliott67123322021-07-01 17:37:55 +0100446
447API changes
448 * Update AEAD output size macros to bring them in line with the PSA Crypto
449 API version 1.0 spec. This version of the spec parameterizes them on the
450 key type used, as well as the key bit-size in the case of
451 PSA_AEAD_TAG_LENGTH.
452 The old versions of these macros were renamed and deprecated as follows:
453 - PSA_AEAD_TAG_LENGTH -> PSA_AEAD_TAG_LENGTH_1_ARG
454 - PSA_AEAD_ENCRYPT_OUTPUT_SIZE -> PSA_AEAD_ENCRYPT_OUTPUT_SIZE_2_ARG
455 - PSA_AEAD_DECRYPT_OUTPUT_SIZE -> PSA_AEAD_DECRYPT_OUTPUT_SIZE_2_ARG
456 - PSA_AEAD_UPDATE_OUTPUT_SIZE -> PSA_AEAD_UPDATE_OUTPUT_SIZE_2_ARG
457 - PSA_AEAD_FINISH_OUTPUT_SIZE -> PSA_AEAD_FINISH_OUTPUT_SIZE_1_ARG
458 - PSA_AEAD_VERIFY_OUTPUT_SIZE -> PSA_AEAD_VERIFY_OUTPUT_SIZE_1_ARG
459 * Implement one-shot cipher functions, psa_cipher_encrypt and
460 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
461 specification.
462
463Requirement changes
464 * The library now uses the %zu format specifier with the printf() family of
465 functions, so requires a toolchain that supports it. This change does not
466 affect the maintained LTS branches, so when contributing changes please
467 bear this in mind and do not add them to backported code.
468
469Features
470 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
471 signature with a specific salt length. This function allows to validate
472 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
473 Meuter in PR #3183.
474 * Added support for built-in driver keys through the PSA opaque crypto
475 driver interface. Refer to the documentation of
476 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
477 * Implement psa_sign_message() and psa_verify_message().
478 * The new function mbedtls_mpi_random() generates a random value in a
479 given range uniformly.
480 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
481 PSA Cryptograpy API 1.0.0 specification.
482 * MBEDTLS_ECP_MAX_BITS is now determined automatically from the configured
483 curves and no longer needs to be configured explicitly to save RAM.
484
485Security
Dave Rodgman699ccf82021-07-05 18:10:27 +0100486 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
487 private keys and of blinding values for DHM and elliptic curves (ECP)
488 computations. Reported by FlorianF89 in #4245.
489 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
490 An adversary who is capable of very precise timing measurements could
491 learn partial information about the leading bits of the nonce used for the
492 signature, allowing the recovery of the private key after observing a
493 large number of signature operations. This completes a partial fix in
494 Mbed TLS 2.20.0.
Paul Elliott67123322021-07-01 17:37:55 +0100495 * It was possible to configure MBEDTLS_ECP_MAX_BITS to a value that is
496 too small, leading to buffer overflows in ECC operations. Fail the build
497 in such a case.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000498 * Fix an issue where an adversary with access to precise enough information
499 about memory accesses (typically, an untrusted operating system attacking
500 a secure enclave) could recover an RSA private key after observing the
501 victim performing a single private-key operation. Found and reported by
Paul Elliott67123322021-07-01 17:37:55 +0100502 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000503 * Fix an issue where an adversary with access to precise enough timing
504 information (typically, a co-located process) could recover a Curve25519
505 or Curve448 static ECDH key after inputting a chosen public key and
506 observing the victim performing the corresponding private-key operation.
507 Found and reported by Leila Batina, Lukas Chmielewski, Björn Haase, Niels
508 Samwel and Peter Schwabe.
Paul Elliott67123322021-07-01 17:37:55 +0100509
510Bugfix
511 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
512 get printf format specifier warnings.
513 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
Paul Elliott40d3fd32021-07-02 11:08:07 +0100514 lead to seed file corruption in the case where the path to the seed file is
Paul Elliott67123322021-07-01 17:37:55 +0100515 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
516 Krasnoshchok in #3616.
517 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
518 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
519 in line with version 1.0.0 of the specification. Fix #4162.
520 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
521 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
522 to create is not valid, bringing them in line with version 1.0.0 of the
523 specification. Fix #4271.
524 * Fix some cases in the bignum module where the library constructed an
525 unintended representation of the value 0 which was not processed
526 correctly by some bignum operations. This could happen when
527 mbedtls_mpi_read_string() was called on "-0", or when
528 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
529 the arguments being negative and the other being 0. Fixes #4643.
530 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
531 zero. Fixes #1792
532 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
533 defined. Fixes #4217.
534 * Fix an incorrect error code when parsing a PKCS#8 private key.
535 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
536 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
537 minimum size was rounded down to the nearest multiple of 8.
538 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
539 defined to specific values. If the code is used in a context
540 where these are already defined, this can result in a compilation
541 error. Instead, assume that if they are defined, the values will
542 be adequate to build Mbed TLS.
543 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
544 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
545 was disabled. Fix the dependency. Fixes #4472.
546 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
547 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
548 nonetheless, resulting in undefined reference errors when building a
549 shared library. Reported by Guillermo Garcia M. in #4411.
550 * Fix test suite code on platforms where int32_t is not int, such as
551 Arm Cortex-M. Fixes #4530.
552 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
553 directive in a header and a missing initialization in the self-test.
554 * Fix a missing initialization in the Camellia self-test, affecting
555 MBEDTLS_CAMELLIA_ALT implementations.
556 * Restore the ability to configure PSA via Mbed TLS options to support RSA
557 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
558 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
559 Fixes #4512.
560 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
561 (when the encrypt-then-MAC extension is not in use) with some ALT
562 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
563 the affected side to wrongly reject valid messages. Fixes #4118.
564 * Remove outdated check-config.h check that prevented implementing the
565 timing module on Mbed OS. Fixes #4633.
566 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
567 about missing inputs.
568 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
569 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
570 * Fix a resource leak in a test suite with an alternative AES
571 implementation. Fixes #4176.
572 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
573 could notably be triggered by setting the TLS debug level to 3 or above
574 and using a Montgomery curve for the key exchange. Reported by lhuang04
575 in #4578. Fixes #4608.
576 * psa_verify_hash() was relying on implementation-specific behavior of
Paul Elliottf3e1a252021-07-02 14:28:53 +0100577 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
578 implementations. This reliance is now removed. Fixes #3990.
Paul Elliott67123322021-07-01 17:37:55 +0100579 * Disallow inputs of length different from the corresponding hash when
580 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
581 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
582 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
583 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
584 could not be triggered by code that constructed A with one of the
585 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
586 those always built an mpi object with at least one limb.
587 Credit to OSS-Fuzz. Fixes #4641.
588 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
589 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
590 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
591 * The PSA API no longer allows the creation or destruction of keys with a
592 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
593 can now only be used as intended, for keys that cannot be modified through
594 normal use of the API.
595 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
596 in all the right places. Include it from crypto_platform.h, which is
597 the natural place. Fixes #4649.
598 * mbedtls_pk_sign() and mbedtls_pk_verify() and their extended and
599 restartable variants now always honor the specified hash length if
600 nonzero. Before, for RSA, hash_len was ignored in favor of the length of
601 the specified hash algorithm.
602 * Fix which alert is sent in some cases to conform to the
603 applicable RFC: on an invalid Finished message value, an
604 invalid max_fragment_length extension, or an
605 unsupported extension used by the server.
Paul Elliott3ca48922021-07-01 18:08:30 +0100606 * Correct (change from 12 to 13 bytes) the value of the macro describing the
607 maximum nonce length returned by psa_aead_generate_nonce().
Paul Elliott67123322021-07-01 17:37:55 +0100608
609Changes
610 * Add extra printf compiler warning flags to builds.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100611 * Fix memsan build false positive in x509_crt.c with Clang 11
Paul Elliott67123322021-07-01 17:37:55 +0100612 * Fix the setting of the read timeout in the DTLS sample programs.
613 * Remove the AES sample application programs/aes/aescrypt2 which shows
614 bad cryptographic practice. Fix #1906.
615 * Alternative implementations of CMAC may now opt to not support 3DES as a
616 CMAC block cipher, and still pass the CMAC self test.
617 * Remove configs/config-psa-crypto.h, which was identical to the default
618 configuration except for having some extra cryptographic mechanisms
619 enabled and for unintended differences. This configuration was primarily
620 intended to demonstrate the PSA API, and lost most of its usefulness when
621 MBEDTLS_PSA_CRYPTO_C became enabled by default.
622 * When building the test suites with GNU make, invoke python3 or python, not
623 python2, which is no longer supported upstream.
Dave Rodgman4614cb12021-07-05 18:50:01 +0100624 * When using session cache based session resumption on the server,
625 double-check that custom session cache implementations return
626 sessions which are consistent with the negotiated ciphersuite
627 and compression method.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100628 * Fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
Paul Elliott67123322021-07-01 17:37:55 +0100629 When that flag is on, standard GNU C printf format specifiers
630 should be used.
631 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
632 during ECC operations at a negligible performance cost.
633 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
634 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
635 when their input has length 0. Note that this is an implementation detail
636 and can change at any time, so this change should be transparent, but it
637 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
638 now writing an empty string where it previously wrote one or more
639 zero digits when operating from values constructed with an mpi_read
640 function and some mpi operations.
641 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
642 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
643 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
644 is also applied when loading a key from storage.
645
Dave Rodgman74755e42021-03-08 18:35:44 +0000646= mbed TLS 2.26.0 branch released 2021-03-08
647
648API changes
649 * Renamed the PSA Crypto API output buffer size macros to bring them in line
650 with version 1.0.0 of the specification.
651 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
652 in bits rather than bytes, with an additional flag to indicate if the
653 size may have been rounded up to a whole number of bytes.
654 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
655 with version 1.0.0 of the specification.
656
657Default behavior changes
658 * In mbedtls_rsa_context objects, the ver field was formerly documented
659 as always 0. It is now reserved for internal purposes and may take
660 different values.
661
662New deprecations
663 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
664 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
665 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
666 deprecated.
667 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
668 have been renamed, and the old names deprecated.
669
670Features
671 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
672 CTR_DRBG is used by default if it is available, but you can override
673 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
674 Fix #3354.
675 * Automatic fallback to a software implementation of ECP when
676 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
677 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
678 * The PSA crypto subsystem can now be configured to use less static RAM by
679 tweaking the setting for the maximum amount of keys simultaneously in RAM.
680 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
681 can exist simultaneously. It has a sensible default if not overridden.
682 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
683 now use an external random generator instead of the library's own
684 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
685 and see the documentation of mbedtls_psa_external_get_random() for details.
686 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
687 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
688 random generator with mbedtls_xxx functions. See the documentation of
689 mbedtls_psa_get_random() for details.
690 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
691 minimum MAC or tag length thanks to the new wildcards
692 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
693 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
694
695Security
696 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
697 nonce from entropy. Applications were affected if they called
698 mbedtls_ctr_drbg_set_nonce_len(), if they called
699 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
700 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
701 In such cases, a random nonce was necessary to achieve the advertised
702 security strength, but the code incorrectly used a constant instead of
703 entropy from the nonce.
704 Found by John Stroebel in #3819 and fixed in #3973.
705 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
706 |A| - |B| where |B| is larger than |A| and has more limbs (so the
707 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
708 applications calling mbedtls_mpi_sub_abs() directly are affected:
709 all calls inside the library were safe since this function is
710 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
711 * Fix an errorneous estimation for an internal buffer in
712 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
713 value the function might fail to write a private RSA keys of the largest
714 supported size.
715 Found by Daniel Otte, reported in #4093 and fixed in #4094.
716 * Fix a stack buffer overflow with mbedtls_net_poll() and
717 mbedtls_net_recv_timeout() when given a file descriptor that is
718 beyond FD_SETSIZE. Reported by FigBug in #4169.
719 * Guard against strong local side channel attack against base64 tables by
720 making access aceess to them use constant flow code.
721
722Bugfix
723 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
724 * Fix memory leak that occured when calling psa_close_key() on a
725 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
726 * Fix an incorrect error code if an RSA private operation glitched.
727 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
728 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
729 is enabled, on platforms where initializing a mutex allocates resources.
730 This was a regression introduced in the previous release. Reported in
731 #4017, #4045 and #4071.
732 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
733 twice is safe. This happens for RSA when some Mbed TLS library functions
734 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
735 enabled on platforms where freeing a mutex twice is not safe.
736 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
737 when MBEDTLS_THREADING_C is enabled on platforms where initializing
738 a mutex allocates resources.
739 * Fixes a bug where, if the library was configured to include support for
740 both the old SE interface and the new PSA driver interface, external keys were
741 not loaded from storage. This was fixed by #3996.
742 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
743 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
744 include this extension in all CA certificates that contain public keys
745 used to validate digital signatures on certificates and MUST mark the
746 extension as critical in such certificates." Previous to this change,
747 the extension was always marked as non-critical. This was fixed by
748 #3698.
749
750Changes
751 * A new library C file psa_crypto_client.c has been created to contain
752 the PSA code needed by a PSA crypto client when the PSA crypto
753 implementation is not included into the library.
754 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
755 now uses the getrandom syscall instead of reading from /dev/urandom.
756
Janos Follath56b38c22020-12-09 01:34:21 +0000757= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +0000758
759API changes
760 * The numerical values of the PSA Crypto API macros have been updated to
761 conform to version 1.0.0 of the specification.
762 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
763 The underlying stream cipher is determined by the key type
764 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
765 * The functions mbedtls_cipher_auth_encrypt() and
766 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
767 as they have no way to check if the output buffer is large enough.
768 Please use mbedtls_cipher_auth_encrypt_ext() and
769 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
770 Cryptofuzz. Fixes #3665.
771
772Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +0000773 * Update the minimum required CMake version to 2.8.12. This silences a
774 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +0000775
776New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +0100777 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000778 Use PSA_ALG_STREAM_CIPHER instead.
779 * The functions mbedtls_cipher_auth_encrypt() and
780 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
781 functions mbedtls_cipher_auth_encrypt_ext() and
782 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
783 these new functions always append the tag to the ciphertext, and include
784 the tag in the ciphertext length.
785
786Features
Janos Follathd6ce1162020-12-09 16:32:01 +0000787 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
788 ciphers, asymmetric signing/verification and key generation, validate_key
789 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +0000790 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000791 * In PSA, allow using a key declared with a base key agreement algorithm
792 in combined key agreement and derivation operations, as long as the key
793 agreement algorithm in use matches the algorithm the key was declared with.
794 This is currently non-standard behaviour, but expected to make it into a
795 future revision of the PSA Crypto standard.
796 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
797 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
798 external CMake projects that include this one to avoid CMake target name
799 clashes. The default value of this variable is "", so default target names
800 are unchanged.
801 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
802 Pascal, improved by Ron Eldor.
803 * In the PSA API, it is no longer necessary to open persistent keys:
804 operations now accept the key identifier. The type psa_key_handle_t is now
805 identical to psa_key_id_t instead of being platform-defined. This bridges
806 the last major gap to compliance with the PSA Cryptography specification
807 version 1.0.0. Opening persistent keys is still supported for backward
808 compatibility, but will be deprecated and later removed in future
809 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000810 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
811 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
812 1.0.0 of the PSA Crypto API specification.
813
814Security
815 * The functions mbedtls_cipher_auth_encrypt() and
816 mbedtls_cipher_auth_decrypt() would write past the minimum documented
817 size of the output buffer when used with NIST_KW. As a result, code using
818 those functions as documented with NIST_KW could have a buffer overwrite
819 of up to 15 bytes, with consequences ranging up to arbitrary code
820 execution depending on the location of the output buffer.
821 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
822 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
823 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
824 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
825 which is how most uses of randomization in asymmetric cryptography
826 (including key generation, intermediate value randomization and blinding)
827 are implemented. This could cause failures or the silent use of non-random
828 values. A random generator can fail if it needs reseeding and cannot not
829 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
830 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
831 * Fix a compliance issue whereby we were not checking the tag on the
832 algorithm parameters (only the size) when comparing the signature in the
833 description part of the cert to the real signature. This meant that a
834 NULL algorithm parameters entry would look identical to an array of REAL
835 (size zero) to the library and thus the certificate would be considered
836 valid. However, if the parameters do not match in *any* way then the
837 certificate should be considered invalid, and indeed OpenSSL marks these
838 certs as invalid when mbedtls did not.
839 Many thanks to guidovranken who found this issue via differential fuzzing
840 and reported it in #3629.
841 * Zeroising of local buffers and variables which are used for calculations
842 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
843 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
844 functions to erase sensitive data from memory. Reported by
845 Johan Malmgren and Johan Uppman Bruce from Sectra.
846
847Bugfix
Paul Elliott40d3fd32021-07-02 11:08:07 +0100848 * Fix an invalid (but non-zero) return code from mbedtls_pk_parse_subpubkey()
Janos Follath76027f62020-12-09 16:28:35 +0000849 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000850 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
851 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
852 * Include the psa_constant_names generated source code in the source tree
853 instead of generating it at build time. Fixes #3524.
854 * Fix rsa_prepare_blinding() to retry when the blinding value is not
855 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
856 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
857 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
858 Fixes #3647.
859 * Use socklen_t on Android and other POSIX-compliant system
860 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
861 Fix #3432.
862 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
863 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
864 psa_cipher_* functions compliant with the PSA Crypto API specification.
865 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
866 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
867 only the curves that support ECDSA, filter the list with
868 mbedtls_ecdsa_can_do().
869 * Fix psa_generate_key() returning an error when asked to generate
870 an ECC key pair on Curve25519 or secp244k1.
871 * Fix psa_key_derivation_output_key() to allow the output of a combined key
872 agreement and subsequent key derivation operation to be used as a key
873 inside of the PSA Crypto core.
874 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
875 chars. Fixes a build failure on platforms where char is unsigned. Fixes
876 #3794.
877 * Fix an off-by-one error in the additional data length check for
878 CCM, which allowed encryption with a non-standard length field.
879 Fixes #3719.
880 * Correct the default IV size for mbedtls_cipher_info_t structures using
881 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
882 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
883 defined. Fix contributed in #3571.
884 * Fix conditions for including string.h in error.c. Fixes #3866.
885 * psa_set_key_id() now also sets the lifetime to persistent for keys located
886 in a secure element.
887 * Attempting to create a volatile key with a non-zero key identifier now
888 fails. Previously the key identifier was just ignored when creating a
889 volatile key.
890 * Attempting to create or register a key with a key identifier in the vendor
891 range now fails.
892 * Fix build failures on GCC 11. Fixes #3782.
893 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
894 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
895 (an error condition) and the second operand was aliased to the result.
896 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
897 could go undetected, resulting in an incorrect result.
898 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
899 Fixes #2927.
900 * In PEM writing functions, fill the trailing part of the buffer with null
901 bytes. This guarantees that the corresponding parsing function can read
902 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
903 until this property was inadvertently broken in Mbed TLS 2.19.0.
904 Fixes #3682.
905 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
906 option on. In this configuration key management methods that are required
907 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
908 Fixes #3818. Reported by John Stroebel.
909
910Changes
911 * Reduce stack usage significantly during sliding window exponentiation.
912 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
913 * The PSA persistent storage format is updated to always store the key bits
914 attribute. No automatic upgrade path is provided. Previously stored keys
915 must be erased, or manually upgraded based on the key storage format
916 specification (docs/architecture/mbed-crypto-storage-specification.md).
917 Fixes #3740.
918 * Remove the zeroization of a pointer variable in AES rounds. It was valid
919 but spurious and misleading since it looked like a mistaken attempt to
920 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
921 Leti, France.
922
Janos Follath6012f0e2020-08-26 15:32:10 +0100923= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100924
925API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100926 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
927 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
928 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100929 Rename associated macros as well:
930 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
931 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
932 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
933 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
934
935Default behavior changes
936 * Stop storing persistent information about externally stored keys created
937 through PSA Crypto with a volatile lifetime. Reported in #3288 and
938 contributed by Steven Cooreman in #3382.
939
940Features
941 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
942 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
943 * Support building on e2k (Elbrus) architecture: correctly enable
944 -Wformat-signedness, and fix the code that causes signed-one-bit-field
945 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
946 <akemi_homura@kurisa.ch>.
947
948Security
949 * Fix a vulnerability in the verification of X.509 certificates when
950 matching the expected common name (the cn argument of
951 mbedtls_x509_crt_verify()) with the actual certificate name: when the
952 subjecAltName extension is present, the expected name was compared to any
953 name in that extension regardless of its type. This means that an
954 attacker could for example impersonate a 4-bytes or 16-byte domain by
955 getting a certificate for the corresponding IPv4 or IPv6 (this would
956 require the attacker to control that IP address, though). Similar attacks
957 using other subjectAltName name types might be possible. Found and
958 reported by kFYatek in #3498.
959 * When checking X.509 CRLs, a certificate was only considered as revoked if
960 its revocationDate was in the past according to the local clock if
961 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
962 certificates were never considered as revoked. On builds with
963 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
964 example, an untrusted OS attacking a secure enclave) could prevent
965 revocation of certificates via CRLs. Fixed by no longer checking the
966 revocationDate field, in accordance with RFC 5280. Reported by
967 yuemonangong in #3340. Reported independently and fixed by
968 Raoul Strackx and Jethro Beekman in #3433.
969 * In (D)TLS record decryption, when using a CBC ciphersuites without the
970 Encrypt-then-Mac extension, use constant code flow memory access patterns
971 to extract and check the MAC. This is an improvement to the existing
972 countermeasure against Lucky 13 attacks. The previous countermeasure was
973 effective against network-based attackers, but less so against local
974 attackers. The new countermeasure defends against local attackers, even
975 if they have access to fine-grained measurements. In particular, this
976 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
977 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
978 (University of Florida) and Dave Tian (Purdue University).
979 * Fix side channel in RSA private key operations and static (finite-field)
980 Diffie-Hellman. An adversary with precise enough timing and memory access
981 information (typically an untrusted operating system attacking a secure
982 enclave) could bypass an existing counter-measure (base blinding) and
983 potentially fully recover the private key.
984 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
985 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
986 for pinpointing the problematic code.
987 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
988 application data from memory. Reported in #689 by
989 Johan Uppman Bruce of Sectra.
990
991Bugfix
992 * Library files installed after a CMake build no longer have execute
993 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100994 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
995 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100996 Reported in #3451 and fix contributed in #3452 by okhowang.
997 * Fix the endianness of Curve25519 keys imported/exported through the PSA
998 APIs. psa_import_key and psa_export_key will now correctly expect/output
999 Montgomery keys in little-endian as defined by RFC7748. Contributed by
1000 Steven Cooreman in #3425.
1001 * Fix build errors when the only enabled elliptic curves are Montgomery
1002 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
1003 also fixes missing declarations reported by Steven Cooreman in #1147.
1004 * Fix self-test failure when the only enabled short Weierstrass elliptic
1005 curve is secp192k1. Fixes #2017.
1006 * PSA key import will now correctly import a Curve25519/Curve448 public key
1007 instead of erroring out. Contributed by Steven Cooreman in #3492.
1008 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
1009 lower bits. Fix contributed in #3540.
1010 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
1011 conditions. Reported and fix suggested by Guido Vranken in #3486.
1012 * Fix bug in redirection of unit test outputs on platforms where stdout is
1013 defined as a macro. First reported in #2311 and fix contributed in #3528.
1014
1015Changes
1016 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
1017 in #3478 and fix contributed in #3479 by okhowang.
1018 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
1019 previously could lead to stack overflow on constrained devices.
1020 Contributed by Doru Gucea and Simon Leet in #3464.
1021 * Undefine the ASSERT macro before defining it locally, in case it is defined
1022 in a platform header. Contributed by Abdelatif Guettouche in #3557.
1023 * Update copyright notices to use Linux Foundation guidance. As a result,
1024 the copyright of contributors other than Arm is now acknowledged, and the
1025 years of publishing are no longer tracked in the source files. This also
1026 eliminates the need for the lines declaring the files to be part of
1027 MbedTLS. Fixes #3457.
1028 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
1029 example applications which allows to provide a password for the key file
1030 specified through the existing key_file argument. This allows the use of
1031 these applications with password-protected key files. Analogously but for
1032 ssl_server2 only, add the command line parameter key_pwd2 which allows to
1033 set a password for the key file provided through the existing key_file2
1034 argument.
1035
Janos Follath13cba682020-06-26 12:40:52 +01001036= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +01001037
1038Default behavior changes
1039 * In the experimental PSA secure element interface, change the encoding of
1040 key lifetimes to encode a persistence level and the location. Although C
1041 prototypes do not effectively change, code calling
1042 psa_register_se_driver() must be modified to pass the driver's location
1043 instead of the keys' lifetime. If the library is upgraded on an existing
1044 device, keys created with the old lifetime value will not be readable or
1045 removable through Mbed TLS after the upgrade.
1046
1047Features
1048 * New functions in the error module return constant strings for
1049 high- and low-level error codes, complementing mbedtls_strerror()
1050 which constructs a string for any error code, including compound
1051 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
1052 in #3176.
1053 * The new utility programs/ssl/ssl_context_info prints a human-readable
1054 dump of an SSL context saved with mbedtls_ssl_context_save().
1055 * Add support for midipix, a POSIX layer for Microsoft Windows.
1056 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
1057 parsing unsupported certificate extensions via user provided callback.
1058 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
1059 a solution to #3241.
1060 * Pass the "certificate policies" extension to the callback supplied to
1061 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
1062 policies (#3419).
1063 * Added support to entropy_poll for the kern.arandom syscall supported on
1064 some BSD systems. Contributed by Nia Alarie in #3423.
1065 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
1066
1067Security
1068 * Fix a side channel vulnerability in modular exponentiation that could
1069 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
1070 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
1071 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
1072 Strackx (Fortanix) in #3394.
1073 * Fix side channel in mbedtls_ecp_check_pub_priv() and
1074 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
1075 private key that didn't include the uncompressed public key), as well as
1076 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
1077 f_rng argument. An attacker with access to precise enough timing and
1078 memory access information (typically an untrusted operating system
1079 attacking a secure enclave) could fully recover the ECC private key.
1080 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
1081 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
1082 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
1083 macros). This would cause the original Lucky 13 attack to be possible in
1084 those configurations, allowing an active network attacker to recover
1085 plaintext after repeated timing measurements under some conditions.
1086 Reported and fix suggested by Luc Perneel in #3246.
1087
1088Bugfix
1089 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
1090 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
1091 the example programs. Reported in #1430 and fix contributed by irwir.
1092 * Fix undefined behavior in X.509 certificate parsing if the
1093 pathLenConstraint basic constraint value is equal to INT_MAX.
1094 The actual effect with almost every compiler is the intended
1095 behavior, so this is unlikely to be exploitable anywhere. #3192
1096 * Fix issue with a detected HW accelerated record error not being exposed
1097 due to shadowed variable. Contributed by Sander Visser in #3310.
1098 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
1099 NULL pointer argument. Contributed by Sander Visser in #3312.
1100 * Fix potential linker errors on dual world platforms by inlining
1101 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
1102 from psa_crypto.c. Fixes #3300.
1103 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
1104 #2855.
1105 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
1106 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
1107 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
1108 * Remove unused macros from MSVC projects. Reported in #3297 and fix
1109 submitted in #3333 by irwir.
1110 * Add additional bounds checks in ssl_write_client_hello() preventing
1111 output buffer overflow if the configuration declared a buffer that was
1112 too small.
1113 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
1114 fix submitted in #3421 by Nia Alarie.
1115 * Fix building library/net_sockets.c and the ssl_mail_client program on
1116 NetBSD. Contributed by Nia Alarie in #3422.
1117 * Fix false positive uninitialised variable reported by cpp-check.
1118 Contributed by Sander Visser in #3311.
1119 * Update iv and len context pointers manually when reallocating buffers
1120 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
1121 when receiving a connection with CID, when these fields were shifted
1122 in ssl_parse_record_header().
1123
1124Changes
1125 * Fix warnings about signedness issues in format strings. The build is now
1126 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
1127 in #3153.
1128 * Fix minor performance issue in operations on Curve25519 caused by using a
1129 suboptimal modular reduction in one place. Found and fix contributed by
1130 Aurelien Jarno in #3209.
1131 * Combine identical cases in switch statements in md.c. Contributed
1132 by irwir in #3208.
1133 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
1134 by irwir in #3150.
1135 * Unify the example programs termination to call mbedtls_exit() instead of
1136 using a return command. This has been done to enable customization of the
1137 behavior in bare metal environments.
1138 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
1139 Contributed by Koh M. Nakagawa in #3326.
1140 * Use FindPython3 when cmake version >= 3.15.0
1141 * Abort the ClientHello writing function as soon as some extension doesn't
1142 fit into the record buffer. Previously, such extensions were silently
1143 dropped. As a consequence, the TLS handshake now fails when the output
1144 buffer is not large enough to hold the ClientHello.
1145 * The unit tests now rely on header files in tests/include/test and source
1146 files in tests/src. When building with make or cmake, the files in
1147 tests/src are compiled and the resulting object linked into each test
1148 executable.
1149 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
1150 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
1151 coutermeasures. If side channels are not a concern, this dependency can
1152 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
1153 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
1154 Martinho. #3147
1155 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
1156 in #3182 and fix submitted by irwir. #3217
1157 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
1158
Janos Follath876e0252020-04-08 17:15:18 +01001159= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001160
1161New deprecations
1162 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
1163 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001164 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
1165 mbedtls_ssl_get_output_max_frag_len() and
1166 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
1167 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001168
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001169Security
1170 * Fix issue in DTLS handling of new associations with the same parameters
1171 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
1172 the server could cause it to drop established associations with
1173 legitimate clients, resulting in a Denial of Service. This could only
1174 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
1175 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01001176 * Fix side channel in ECC code that allowed an adversary with access to
1177 precise enough timing and memory access information (typically an
1178 untrusted operating system attacking a secure enclave) to fully recover
1179 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
1180 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02001181 * Fix a potentially remotely exploitable buffer overread in a
1182 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001183
Janos Follathee856862020-04-08 16:58:36 +01001184Features
1185 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
1186 resizes the I/O buffers before and after handshakes, reducing the memory
1187 consumption during application data transfer.
1188
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001189Bugfix
1190 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
1191 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03001192 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
1193 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01001194 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
1195 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001196
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001197Changes
1198 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
1199 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001200 * Split mbedtls_ssl_get_max_frag_len() into
1201 mbedtls_ssl_get_output_max_frag_len() and
1202 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
1203 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1204 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001205
Janos Follath138c2ea2020-02-19 14:32:24 +00001206= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00001207
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001208New deprecations
1209 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
1210 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00001211 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01001212 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
1213 library which allows TLS authentication to use keys stored in a
1214 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001215
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001216Security
1217 * Fix potential memory overread when performing an ECDSA signature
1218 operation. The overread only happens with cryptographically low
1219 probability (of the order of 2^-n where n is the bitsize of the curve)
1220 unless the RNG is broken, and could result in information disclosure or
1221 denial of service (application crash or extra resource consumption).
1222 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001223 * To avoid a side channel vulnerability when parsing an RSA private key,
1224 read all the CRT parameters from the DER structure rather than
1225 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
1226 Brumley. Reported and fix contributed by Jack Lloyd.
1227 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001228
1229Features
1230 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
1231 support without SHA-384.
1232
1233API changes
1234 * Change the encoding of key types and curves in the PSA API. The new
1235 values are aligned with the upcoming release of the PSA Crypto API
1236 specification version 1.0.0. The main change which may break some
1237 existing code is that elliptic curve key types no longer encode the
1238 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
1239 a curve family and the key size determines the exact curve (for example,
1240 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
1241
Jaeden Amero62236d72020-01-24 18:20:22 +00001242Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01001243 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01001244 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
1245 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01001246 * Fix some false-positive uninitialized variable warnings in X.509. Fix
1247 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001248 * Fix a possible error code mangling in psa_mac_verify_finish() when
1249 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00001250 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
1251 RSA keys that would later be rejected by functions expecting private
1252 keys. Found by Catena cyber using oss-fuzz (issue 20467).
1253 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
1254 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00001255
Jaeden Amerod56a2af2020-01-15 18:07:20 +00001256= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03001257
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001258Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001259 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001260 entropy function to obtain entropy for a nonce if the entropy size is less
1261 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001262 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001263 nonce length to 0.
1264
1265Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001266 * Enforce that mbedtls_entropy_func() gathers a total of
1267 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001268 default configuration, on a platform with a single entropy source, the
1269 entropy module formerly only grabbed 32 bytes, which is good enough for
1270 security if the source is genuinely strong, but less than the expected 64
1271 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01001272 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
1273 mbedtls_internal_aes_decrypt() before exiting the function. The value of
1274 these variables can be used to recover the last round key. To follow best
1275 practice and to limit the impact of buffer overread vulnerabilities (like
1276 Heartbleed) we need to zeroize them before exiting the function.
1277 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
1278 Grant Hernandez, and Kevin Butler (University of Florida) and
1279 Dave Tian (Purdue University).
1280 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
1281 constant time/constant trace, so side channel attacks can retrieve the
1282 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
1283 to have only large prime factors), and then, by brute force, recover the
1284 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
1285 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
1286 timings on the comparison in the key generation enabled the attacker to
1287 learn leading bits of the ephemeral key used during ECDSA signatures and to
1288 recover the private key. Reported by Jeremy Dubeuf.
1289 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
1290 failures could happen with alternative implementations of AES. Bug
1291 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
1292 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001293
1294Features
1295 * Key derivation inputs in the PSA API can now either come from a key object
1296 or from a buffer regardless of the step type.
1297 * The CTR_DRBG module can grab a nonce from the entropy source during the
1298 initial seeding. The default nonce length is chosen based on the key size
1299 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001300 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001301 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001302 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001303
1304API changes
1305 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
1306 key derivation function, use a buffer instead (this is now always
1307 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001308 * Rename psa_asymmetric_sign() to psa_sign_hash() and
1309 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001310
irwir6c0da642019-09-26 21:07:41 +03001311Bugfix
1312 * Fix an incorrect size in a debugging message. Reported and fix
1313 submitted by irwir. Fixes #2717.
1314 * Fix an unused variable warning when compiling without DTLS.
1315 Reported and fix submitted by irwir. Fixes #2800.
1316 * Remove a useless assignment. Reported and fix submitted by irwir.
1317 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001318 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01001319 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001320 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001321 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001322 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001323 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001324 * mbedtls_ctr_drbg_set_entropy_len() and
1325 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
1326 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001327
1328Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001329 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001330 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001331 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001332 before).
1333 * Variables containing error codes are now initialized to an error code
1334 rather than success, so that coding mistakes or memory corruption tends to
1335 cause functions to return this error code rather than a success. There are
1336 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01001337 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001338 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001339 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001340 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01001341 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001342 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001343 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03001344
Jaeden Amero914a5072019-09-18 13:35:57 +01001345= mbed TLS 2.19.1 branch released 2019-09-16
1346
1347Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06001348 * Declare include headers as PUBLIC to propagate to CMake project consumers
1349 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01001350 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
1351 TLS sessions with tools like Wireshark.
1352
1353API Changes
1354 * Make client_random and server_random const in
1355 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
1356 from modifying the client/server hello.
1357
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001358Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01001359 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001360 contributed by apple-ihack-geek in #2663.
1361
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001362= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001363
Gilles Peskine52157832018-08-11 00:51:04 +02001364Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001365 * Fix a missing error detection in ECJPAKE. This could have caused a
1366 predictable shared secret if a hardware accelerator failed and the other
1367 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02001368 * When writing a private EC key, use a constant size for the private
1369 value, as specified in RFC 5915. Previously, the value was written
1370 as an ASN.1 INTEGER, which caused the size of the key to leak
1371 about 1 bit of information on average and could cause the value to be
1372 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00001373 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
1374 implement blinding. Because of this for the same key and message the same
1375 blinding value was generated. This reduced the effectiveness of the
1376 countermeasure and leaked information about the private key through side
1377 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02001378
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001379Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001380 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02001381 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001382 store it in non-volatile storage, and later using it for TLS session
1383 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03001384 * Add a new API function mbedtls_ssl_check_record() to allow checking that
1385 an incoming record is valid, authentic and has not been seen before. This
1386 feature can be used alongside Connection ID and SSL context serialisation.
1387 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
1388 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001389 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
1390 (https://project-everest.github.io/). It can be enabled at compile time
1391 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
1392 verified and significantly faster, but is only supported on x86 platforms
1393 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
1394 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01001395 * Add mbedtls_net_close(), enabling the building of forking servers where
1396 the parent process closes the client socket and continue accepting, and
1397 the child process closes the listening socket and handles the client
1398 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001399
Gilles Peskine60b29d62019-08-14 18:37:59 +02001400API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02001401 * Add DER-encoded test CRTs to library/certs.c, allowing
1402 the example programs ssl_server2 and ssl_client2 to be run
1403 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
1404 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001405 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
1406 list all curves for which at least one of ECDH or ECDSA is supported, not
1407 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
1408 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
1409 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001410 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
1411 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
1412 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00001413
1414New deprecations
1415 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
1416 RNG function as an input.
1417 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
1418 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02001419
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001420Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01001421 * Fix missing bounds checks in X.509 parsing functions that could
1422 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
1423 * Fix multiple X.509 functions previously returning ASN.1 low-level error
1424 codes to always wrap these codes into X.509 high level error codes before
1425 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01001426 * Fix to allow building test suites with any warning that detects unused
1427 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01001428 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01001429 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01001430 * Fix build failure when building with mingw on Windows by including
1431 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01001432 * Fix Visual Studio Release x64 build configuration by inheriting
1433 PlatformToolset from the project configuration. Fixes #1430 reported by
1434 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01001435 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
1436 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02001437 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01001438 * Avoid use of statically sized stack buffers for certificate writing.
1439 This previously limited the maximum size of DER encoded certificates
1440 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04001441 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02001442 * Update test certificates that were about to expire. Reported by
1443 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02001444 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
1445 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
1446 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01001447 * Fix propagation of restart contexts in restartable EC operations.
1448 This could previously lead to segmentation faults in builds using an
1449 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01001450 * Fix memory leak in in mpi_miller_rabin(). Contributed by
1451 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06001452 * Improve code clarity in x509_crt module, removing false-positive
1453 uninitialized variable warnings on some recent toolchains (GCC8, etc).
1454 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01001455 * Fix bug in endianness conversion in bignum module. This lead to
1456 functionally incorrect code on bigendian systems which don't have
1457 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01001458
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001459Changes
Hanno Becker136512b2019-05-30 11:16:02 +01001460 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02001461 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
1462 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01001463 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06001464 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
1465 docker-env.sh) to simplify running test suites on a Linux host. Contributed
1466 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01001467 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
1468 test runs without variability. Contributed by Philippe Antoine (Catena
1469 cyber) in #2681.
1470 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02001471 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
1472 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001473 * Remove the crypto part of the library from Mbed TLS. The crypto
1474 code and tests are now only available via Mbed Crypto, which
1475 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001476
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001477= mbed TLS 2.18.1 branch released 2019-07-12
1478
Jaeden Ameroded319d2019-05-30 13:18:24 +01001479Bugfix
1480 * Fix build failure when building with mingw on Windows by including
1481 stdarg.h where needed. Fixes #2656.
1482
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001483Changes
1484 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
1485 Ashley Duncan in #2609.
1486
Jaeden Amerob1c72f52019-06-11 17:18:09 +01001487= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001488
Hanno Beckerac4172c2019-01-31 09:27:04 +00001489Features
1490 * Add the Any Policy certificate policy oid, as defined in
1491 rfc 5280 section 4.2.1.4.
1492 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
1493 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00001494 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
1495 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00001496 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00001497 Contributed by Jack Lloyd and Fortanix Inc.
1498 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001499 and the used tls-prf.
1500 * Add public API for tls-prf function, according to requested enum.
1501 * Add support for parsing otherName entries in the Subject Alternative Name
1502 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00001503 as defined in RFC 4108 section 5.
1504 * Add support for parsing certificate policies extension, as defined in
1505 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
1506 supported.
1507 * List all SAN types in the subject_alt_names field of the certificate.
1508 Resolves #459.
1509 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00001510 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
1511 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00001512 lifetime of the underlying transport by adding a connection identifier
1513 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001514 incoming record with the correct connection data even after the peer has
1515 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00001516 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
1517 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
1518
Paul Bakker5121ce52009-01-03 21:22:43 +00001519
Jaeden Amero4e0db562019-08-27 11:18:28 +01001520API Changes
1521 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
1522 and the used tls-prf.
1523 * Add public API for tls-prf function, according to requested enum.
1524
Paul Bakker5121ce52009-01-03 21:22:43 +00001525Bugfix
1526 * Fix private key DER output in the key_app_writer example. File contents
1527 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
1528 Christian Walther in #2239.
1529 * Fix potential memory leak in X.509 self test. Found and fixed by
1530 Junhwan Park, #2106.
1531 * Reduce stack usage of hkdf tests. Fixes #2195.
1532 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
1533 used with negative inputs. Found by Guido Vranken in #2404. Credit to
1534 OSS-Fuzz.
1535 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
1536 either used both encrypt and decrypt key schedules, or which perform padding.
1537 GCM and CCM were not affected. Fixed by Jack Lloyd.
1538 * Fix incorrect default port number in ssl_mail_client example's usage.
1539 Found and fixed by irwir. #2337
1540 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
1541 Fixed by Peter Kolbus (Garmin). #2579
1542 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00001543 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
1544 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001545 for the parameter.
1546 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00001547 sni entry parameter. Reported by inestlerode in #560.
1548 * Set the next sequence of the subject_alt_name to NULL when deleting
1549 sequence on failure. Found and fix suggested by Philippe Antoine.
1550 Credit to OSS-Fuzz.
1551
Paul Bakker5121ce52009-01-03 21:22:43 +00001552Changes
1553 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
1554 mbedTLS configuration only SHA-2 signed certificates are accepted.
1555 This certificate is used in the demo server programs, which lead the
1556 client programs to fail at the peer's certificate verification
1557 due to an unacceptable hash signature. The certificate has been
1558 updated to one that is SHA-256 signed. Fix contributed by
1559 Illya Gerasymchuk.
1560 * Return from various debugging routines immediately if the
1561 provided SSL context is unset.
1562 * Remove dead code from bignum.c in the default configuration.
1563 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
1564 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
1565 Contributed by Peter Kolbus (Garmin).
1566 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
1567 improve clarity. Fixes #2258.
1568
1569= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00001570
1571Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001572 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
1573 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001574 at the cost of additional lifetime constraints on the input
1575 buffer, but at the benefit of reduced RAM consumption.
1576 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
1577 named bitstring in DER as required by RFC 5280 Appendix B.
1578 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
1579 from the default list (enabled by default). See
1580 https://sweet32.info/SWEET32_CCS16.pdf.
1581
1582API Changes
1583 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001584 See the Features section for more information.
1585 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
1586 for the benefit of saving RAM, by disabling the new compile-time
1587 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
1588 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
1589 always return NULL, and removes the peer_cert field from the
1590 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01001591 certificate.
1592
1593Security
1594 * Make mbedtls_ecdh_get_params return an error if the second key
1595 belongs to a different group from the first. Before, if an application
1596 passed keys that belonged to different group, the first key's data was
1597 interpreted according to the second group, which could lead to either
1598 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001599 latter case, this could expose at most 5 bits of the private key.
1600
1601Bugfix
1602 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
1603 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
1604 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
1605 Raised as a comment in #1996.
1606 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
1607 previously lead to a stack overflow on constrained targets.
1608 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
1609 in the header files, which missed the precompilation check. #971
1610 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
1611 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00001612 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
1613 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02001614 * Fix signed-to-unsigned integer conversion warning
1615 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06001616 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
1617 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01001618 * Fix false failure in all.sh when backup files exist in include/mbedtls
1619 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
1620 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
1621 mbedtls_asn1_write_bitstring().
1622 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
1623 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00001624 correctly as trailing zeroes were not accounted for as unused bits in the
1625 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00001626
1627Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001628 * Reduce RAM consumption during session renegotiation by not storing
1629 the peer CRT chain and session ticket twice.
1630 * Include configuration file in all header files that use configuration,
1631 instead of relying on other header files that they include.
1632 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001633 * Add support for alternative CSR headers, as used by Microsoft and defined
1634 in RFC 7468. Found by Michael Ernst. Fixes #767.
1635 * Correct many misspellings. Fixed by MisterDA #2371.
1636 * Provide an abstraction of vsnprintf to allow alternative implementations
1637 for platforms that don't provide it. Based on contributions by Joris Aerts
1638 and Nathaniel Wesley Filardo.
1639 * Fix clobber list in MIPS assembly for large integer multiplication.
1640 Previously, this could lead to functionally incorrect assembly being
1641 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01001642 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
1643 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01001644 * Reduce the complexity of the timing tests. They were assuming more than the
1645 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01001646 * Fix configuration queries in ssl-opt.h. #2030
1647 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00001648 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
1649 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001650 * Ciphersuites based on 3DES now have the lowest priority by default when
1651 they are enabled.
1652
1653= mbed TLS 2.16.0 branch released 2018-12-21
1654
1655Features
1656 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
1657 of parameters in the API. This allows detection of obvious misuses of the
1658 API, such as passing NULL pointers. The API of existing functions hasn't
1659 changed, but requirements on parameters have been made more explicit in
1660 the documentation. See the corresponding API documentation for each
1661 function to see for which parameter values it is defined. This feature is
1662 disabled by default. See its API documentation in config.h for additional
1663 steps you have to take when enabling it.
1664
1665API Changes
1666 * The following functions in the random generator modules have been
1667 deprecated and replaced as shown below. The new functions change
1668 the return type from void to int to allow returning error codes when
1669 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
1670 primitive. Fixes #1798.
1671 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
1672 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
1673 * Extend ECDH interface to enable alternative implementations.
1674 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
1675 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
1676 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
1677 * Additional parameter validation checks have been added for the following
1678 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
1679 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
1680 Where modules have had parameter validation added, existing parameter
1681 checks may have changed. Some modules, such as Chacha20 had existing
1682 parameter validation whereas other modules had little. This has now been
1683 changed so that the same level of validation is present in all modules, and
1684 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
1685 is off. That means that checks which were previously present by default
1686 will no longer be.
1687
1688New deprecations
1689 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
1690 in favor of functions that can return an error code.
1691
1692Bugfix
1693 * Fix for Clang, which was reporting a warning for the bignum.c inline
1694 assembly for AMD64 targets creating string literals greater than those
1695 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
1696 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
1697 through qemu user emulation. Reported and fix suggested by randombit
1698 in #1212. Fixes #1212.
1699 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
1700 This could lead to a buffer overflow, but only in case ticket authentication
1701 was broken. Reported and fix suggested by Guido Vranken in #659.
1702 * Add explicit integer to enumeration type casts to example program
1703 programs/pkey/gen_key which previously led to compilation failure
1704 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
1705 * Fix double initialization of ECC hardware that made some accelerators
1706 hang.
1707 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001708 of check for certificate/key matching. Reported by Attila Molnar, #507.
1709
1710 = mbed TLS 2.15.1 branch released 2018-11-30
1711
1712 Changes
1713 * Update the Mbed Crypto submodule to version 0.1.0b2.
1714
1715 = mbed TLS 2.15.0 branch released 2018-11-23
1716
1717 Features
1718 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
1719 Mbed Crypto as the source of the cryptography implementation.
1720 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
1721 the PSA Crypto API from Mbed Crypto when additionally used with the
1722 USE_CRYPTO_SUBMODULE build option.
1723
1724 Changes
1725 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001726 from the cipher abstraction layer. Fixes #2198.
1727
1728= mbed TLS 2.14.1 branch released 2018-11-30
1729
1730Security
1731 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
1732 decryption that could lead to a Bleichenbacher-style padding oracle
1733 attack. In TLS, this affects servers that accept ciphersuites based on
1734 RSA decryption (i.e. ciphersuites whose name contains RSA but not
1735 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
1736 (University of Adelaide), Daniel Genkin (University of Michigan),
1737 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
1738 (University of Adelaide, Data61). The attack is described in more detail
1739 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
1740 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
1741 via branching and memory access patterns. An attacker who could submit
1742 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
1743 of the decryption and not its result could nonetheless decrypt RSA
1744 plaintexts and forge RSA signatures. Other asymmetric algorithms may
1745 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
1746 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
1747 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
1748 modules.
1749
1750API Changes
1751 * The new functions mbedtls_ctr_drbg_update_ret() and
1752 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
1753 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001754 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001755 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001756
Hanno Beckerd3445da2018-11-02 09:36:45 +00001757= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001758
Simon Butcherb35e59d2018-11-19 15:49:26 +00001759Security
Simon Butcher681edee2018-11-07 16:25:38 +00001760 * Fix overly strict DN comparison when looking for CRLs belonging to a
1761 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1762 name and the CA's subject name differed in their string encoding (e.g.,
1763 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001764 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001765 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001766 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001767 incoming message buffer was placed within the first 64KiB of address
1768 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001769 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1770 potentially leading to an application crash or information disclosure.
1771 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1772 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001773 adversary to construct non-primes that would be erroneously accepted as
1774 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001775 security of TLS, but can matter in other contexts with numbers chosen
1776 potentially by an adversary that should be prime and can be validated.
1777 For example, the number of rounds was enough to securely generate RSA key
1778 pairs or Diffie-Hellman parameters, but was insufficient to validate
1779 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001780 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001781 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001782
Simon Butcherb35e59d2018-11-19 15:49:26 +00001783Features
1784 * Add support for temporarily suspending expensive ECC computations after
1785 some configurable amount of operations. This is intended to be used in
1786 constrained, single-threaded systems where ECC is time consuming and can
1787 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001788 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1789 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1790 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1791 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001792 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1793 including client authentication).
1794 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1795 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001796 MPI multiplications used in ECC and RSA cryptography. Contributed by
1797 Aurelien Jarno.
1798 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1799 signature always used a salt with the same length as the hash, and returned
1800 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001801 shorter. This allows the library to support all hash and signature sizes
1802 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001803 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001804 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001805
1806API Changes
1807 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1808 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001809 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001810 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001811
1812New deprecations
1813 * All module specific errors following the form
1814 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001815 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001816 platform error.
1817 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001818 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1819 by the equivalent plaform error.
1820 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001821 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001822 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001823
1824Bugfix
1825 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1826 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001827 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1828 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001829 * Fix a bug in the update function for SSL ticket keys which previously
1830 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001831 * Fix failure in hmac_drbg in the benchmark sample application, when
1832 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1833 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001834 which lead to accepting properly authenticated but improperly
1835 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001836 * Fix memory leak and freeing without initialization in the example
1837 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001838 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1839 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1840 * Zeroize memory used for buffering or reassembling handshake messages
1841 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001842 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1843 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1844 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001845 UTF8String. Previously, the use of the PrintableString format led to
1846 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001847 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1848 Thomas-Dee.
1849 * Fix compilation failure for configurations which use compile time
1850 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001851 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1852 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001853
Simon Butcherc86993e2018-09-27 09:48:54 +01001854Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001855 * Removed support for Yotta as a build tool.
1856 * Add tests for session resumption in DTLS.
1857 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001858 test the handling of large packets and small packets on the client side
1859 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001860 * Change the dtls_client and dtls_server samples to work by default over
1861 IPv6 and optionally by a build option over IPv4.
1862 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001863 calls, rather than Win32 API calls directly. This is necessary to avoid
1864 conflict with C runtime usage. Found and fixed by irwir.
1865 * Remember the string format of X.509 DN attributes when replicating
1866 X.509 DNs. Previously, DN attributes were always written in their default
1867 string format (mostly PrintableString), which could lead to CRTs being
1868 created which used PrintableStrings in the issuer field even though the
1869 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1870 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001871 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1872 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001873 * Improve documentation of mbedtls_ssl_get_verify_result().
1874 Fixes #517 reported by github-monoculture.
1875 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001876 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001877 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001878
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001879= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001880
Hanno Becker921b76d2018-09-05 16:21:36 +01001881API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001882 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001883 whose implementation should behave as a thread-safe version of gmtime().
1884 This allows users to configure such an implementation at compile time when
1885 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001886 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001887 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001888
1889Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001890 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001891 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001892
k-stachowiak21feae52018-07-09 14:42:35 +02001893= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001894
1895Security
1896 * Fix an issue in the X.509 module which could lead to a buffer overread
1897 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001898 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001899 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001900
1901Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001902 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001903 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001904 with the peer, as well as by a new per-connection MTU option, set using
1905 mbedtls_ssl_set_mtu().
1906 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001907 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1908 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001909 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001910 enabled by default.
1911 * Add support for buffering out-of-order handshake messages in DTLS.
1912 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001913 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1914 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001915
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001916API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001917 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001918 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001919
1920Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001921 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1922 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001923 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1924 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001925 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001926 Fix contributed by Espressif Systems.
1927 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001928 This improves compliance to RFC 4492, and as a result, solves
1929 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001930 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001931 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001932 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1933 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1934 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1935 with TLS versions 1.1 and earlier when the server requested authentication
1936 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001937 check in parsing the CertificateRequest message,
1938 introduced in Mbed TLS 2.12.0. Fixes #1954.
1939 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001940 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1941 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001942 * Fix undefined shifts with negative values in certificates parsing
1943 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001944 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001945 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001946 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1947
1948Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001949 * Copy headers preserving timestamps when doing a "make install".
1950 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001951 * Allow the forward declaration of public structs. Contributed by Dawid
1952 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001953 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001954 CCM test vectors from RAM.
1955 * Add support for buffering of out-of-order handshake messages.
1956 * Add warnings to the documentation of the HKDF module to reduce the risk
1957 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001958 functions. Fixes #1775. Reported by Brian J. Murray.
1959
Gilles Peskine104d8582018-06-27 10:57:33 +02001960= mbed TLS 2.12.0 branch released 2018-07-25
1961
1962Security
1963 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1964 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1965 partially recover the plaintext of messages under some conditions by
1966 exploiting timing measurements. With DTLS, the attacker could perform
1967 this recovery by sending many messages in the same connection. With TLS
1968 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1969 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1970 sent over connections manipulated by the attacker. Connections using GCM
1971 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1972 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1973 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001974 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1975 Shamir.
1976 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001977 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001978 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001979 plaintext of messages under some conditions by using a cache attack
1980 targeting an internal MD/SHA buffer. With TLS or if
1981 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1982 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1983 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001984 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1985 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1986 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1987 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1988 execute code on the local machine as well as manipulate network packets,
1989 to partially recover the plaintext of messages under some conditions (see
1990 previous entry) by using a cache attack targeting the SSL input record
1991 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001992 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001993 Eyal Ronen and Adi Shamir.
1994
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001995Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001996 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001997 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001998 by Daniel King.
1999 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01002000 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
2001 Contributed by Augustin Cavalier.
2002 * Make the receive and transmit buffers independent sizes, for situations
2003 where the outgoing buffer can be fixed at a smaller size than the incoming
2004 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03002005 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002006 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02002007 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01002008 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
2009
2010Bugfix
niisatob7d39db2018-06-25 20:44:57 +09002011 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09002012 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01002013 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002014 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01002015 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
2016 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01002017 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
2018 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01002019 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
2020 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03002021 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
2022 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002023 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
2024 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01002025 * Added length checks to some TLS parsing functions. Found and fixed by
2026 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03002027 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03002028 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01002029 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
2030 the `#include` in the header files. Resolves #857
2031 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01002032 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
2033 Drozd. #1098
2034 * Fix decryption for zero length messages (which contain all padding) when a
2035 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
2036 such a message was wrongly reported as an invalid record and therefore lead
2037 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01002038 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
2039 contributed by Espressif Systems. Fixes #1632
2040 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002041 when the request_size argument is set to 0 as stated in the documentation.
2042 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01002043 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01002044 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002045 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01002046
2047Changes
2048 * Fail when receiving a TLS alert message with an invalid length, or invalid
2049 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
2050 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002051 when calling with a NULL salt and non-zero salt_len. Contributed by
2052 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00002053 * Change the shebang line in Perl scripts to look up perl in the PATH.
2054 Contributed by fbrosson.
2055 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01002056 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02002057 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
2058
2059= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01002060
2061Features
2062 * Add additional block mode, OFB (Output Feedback), to the AES module and
2063 cipher abstraction module.
2064 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01002065 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
2066 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02002067 * Add support for the XTS block cipher mode with AES (AES-XTS).
2068 Contributed by Aorimn in pull request #414.
2069 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01002070 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01002071 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01002072
2073Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01002074 * Fix the cert_write example to handle certificates signed with elliptic
2075 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01002076 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
2077 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01002078 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01002079 Reported by rahmanih in #683
2080 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
2081
Simon Butcherb6a5bff2018-06-18 11:51:36 +01002082Changes
2083 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
2084 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02002085 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01002086 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002087
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01002088= mbed TLS 2.10.0 branch released 2018-06-06
2089
2090Features
2091 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02002092 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00002093
2094API Changes
2095 * Extend the platform module with a util component that contains
2096 functionality shared by multiple Mbed TLS modules. At this stage
2097 platform_util.h (and its associated platform_util.c) only contain
2098 mbedtls_platform_zeroize(), which is a critical function from a security
2099 point of view. mbedtls_platform_zeroize() needs to be regularly tested
2100 against compilers to ensure that calls to it are not removed from the
2101 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01002102 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01002103 facilitate testing and maintenance.
2104
2105Bugfix
2106 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002107 build to fail. Found by zv-io. Fixes #1651.
2108
Moran Pekera64fba42018-02-25 13:29:03 +02002109Changes
2110 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002111 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01002112 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02002113
Simon Butcherf85c90a2017-07-27 15:11:52 +01002114= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01002115
2116Security
2117 * Fix an issue in the X.509 module which could lead to a buffer overread
2118 during certificate validation. Additionally, the issue could also lead to
2119 unnecessary callback checks being made or to some validation checks to be
2120 omitted. The overread could be triggered remotely, while the other issues
2121 would require a non DER-compliant certificate to be correctly signed by a
2122 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
2123 luocm. Fixes #825.
2124 * Fix the buffer length assertion in the ssl_parse_certificate_request()
2125 function which led to an arbitrary overread of the message buffer. The
2126 overreads could be caused by receiving a malformed message at the point
2127 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04002128 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01002129 data is output with the debug data.
2130 * Fix a client-side bug in the validation of the server's ciphersuite choice
2131 which could potentially lead to the client accepting a ciphersuite it didn't
2132 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002133 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01002134 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01002135
2136Features
2137 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01002138 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
2139 Suggested and contributed by jkivilin in pull request #394.
2140 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002141 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01002142 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
2143 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01002144
2145API Changes
2146 * Extend the public API with the function of mbedtls_net_poll() to allow user
2147 applications to wait for a network context to become ready before reading
2148 or writing.
2149 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02002150 a check for whether more more data is pending to be processed in the
2151 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01002152 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00002153 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01002154
Gilles Peskine08185402018-03-22 21:50:48 +01002155Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01002156 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
2157 contributed by Brian J Murray and David Brown.
2158 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01002159 in configurations that omit certain hashes or public-key algorithms.
2160 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02002161 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01002162 #1353
2163 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
2164 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
2165 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08002166 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01002167 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07002168 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01002169 unable to parse keys which had only the optional parameters field of the
2170 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
2171 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02002172 stated in the mbedtls_cipher_update() documentation. Contributed by
2173 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01002174 * Fix overriding and ignoring return values when parsing and writing to
2175 a file in pk_sign program. Found by kevlut in #1142.
2176 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
2177 where data needs to be fetched from the underlying transport in order
2178 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01002179 returned when unexpected messages were being discarded, ignoring that
2180 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02002181 in the internal buffers; these cases led to deadlocks when event-driven
2182 I/O was used. Found and reported by Hubert Mis in #772.
2183 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04002184 function which leads to a potential one byte overread of the message
2185 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002186 * Fix invalid buffer sizes passed to zlib during record compression and
2187 decompression.
2188 * Fix the soversion of libmbedcrypto to match the soversion of the
2189 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01002190 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002191 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
2192
Simon Butcherb03120a2018-04-30 16:40:25 +01002193Changes
2194 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01002195 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
2196 independently by Matthieu Volat and Arne Schwabe.
2197 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00002198 public-key algorithms. Includes contributions by Gert van Dijk.
2199 * Improve negative testing of X.509 parsing.
2200 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01002201 configurations where the feature is disabled. Found and fixed by Gergely
2202 Budai.
2203 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
2204 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01002205 instead incorrectly manipulates the configuration structure directly.
2206 Found and fix submitted by junyeonLEE in #1220.
2207 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02002208 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
2209 without PBES2. Fixed by Marcos Del Sol Vives.
2210 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01002211 for Curve25519 (other curves had it already). Contributed by Nicholas
2212 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01002213 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
2214 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01002215 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002216 Paul Sokolovsky in #1356.
2217 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01002218 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002219 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01002220 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02002221 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02002222 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
2223 by Alexey Skalozub in #405.
2224 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02002225 transmitting more than the required length, return an error. Raised by
2226 Sam O'Connor in #1245.
2227 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01002228 HMAC functions with non-HMAC ciphersuites. Independently contributed
2229 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02002230 * Improve security of RSA key generation by including criteria from
2231 FIPS 186-4. Contributed by Jethro Beekman. #1380
2232 * Declare functions in header files even when an alternative implementation
2233 of the corresponding module is activated by defining the corresponding
2234 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04002235 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002236 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00002237 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01002238
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002239= mbed TLS 2.8.0 branch released 2018-03-16
2240
2241Default behavior changes
2242 * The truncated HMAC extension now conforms to RFC 6066. This means
2243 that when both sides of a TLS connection negotiate the truncated
2244 HMAC extension, Mbed TLS can now interoperate with other
2245 compliant implementations, but this breaks interoperability with
2246 prior versions of Mbed TLS. To restore the old behavior, enable
2247 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
2248 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00002249 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002250
2251Security
2252 * Fix implementation of the truncated HMAC extension. The previous
2253 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01002254 HMAC key of a single, uninterrupted connection (with no
2255 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002256 * Verify results of RSA private key operations to defend
2257 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002258 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
2259 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01002260 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
2261 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00002262 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002263 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
2264
2265Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01002266 * Extend PKCS#8 interface by introducing support for the entire SHA
2267 algorithms family when encrypting private keys using PKCS#5 v2.0.
2268 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01002269 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002270 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00002271 * Add support for public keys encoded in PKCS#1 format. #1122
2272
2273New deprecations
2274 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01002275 MBEDTLS_ZLIB_SUPPORT).
2276
2277Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01002278 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02002279 Fixes #1358.
2280 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01002281 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
2282 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00002283 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01002284 daniel in the Mbed TLS forum. #1351
2285 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
2286 * Fix setting version TLSv1 as minimal version, even if TLS 1
2287 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03002288 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
2289 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03002290 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01002291 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02002292 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01002293 * In test_suite_pk, pass valid parameters when testing for hash length
2294 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01002295 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01002296 by Guido Vranken. #639
2297 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002298 * Fix X509 CRT parsing that would potentially accept an invalid tag when
2299 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002300 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
2301 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01002302 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
2303 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01002304 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
2305 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01002306 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
2307 Found through fuzz testing.
2308
2309Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01002310 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01002311 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01002312 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
2313 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02002314 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01002315 a migration path for those depending on the library's ABI.
2316 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01002317 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002318 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002319
Gilles Peskine28a0c722017-10-17 19:01:38 +02002320= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00002321
2322Security
2323 * Fix a heap corruption issue in the implementation of the truncated HMAC
2324 extension. When the truncated HMAC extension is enabled and CBC is used,
2325 sending a malicious application packet could be used to selectively corrupt
2326 6 bytes on the peer's heap, which could potentially lead to crash or remote
2327 code execution. The issue could be triggered remotely from either side in
2328 both TLS and DTLS. CVE-2018-0488
2329 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
2330 for the key size, which could potentially lead to crash or remote code
2331 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
2332 Qualcomm Technologies Inc. CVE-2018-0487
2333 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
2334 zeros.
2335 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01002336 64 KiB to the address of the SSL buffer and causing a wrap around.
2337 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
2338 default enabled) maximum fragment length extension is disabled in the
2339 config and the application data buffer passed to mbedtls_ssl_write
2340 is larger than the internal message buffer (16384 bytes by default), the
2341 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00002342 application layer can be forced into sending such large packets. The issue
2343 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
2344 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
2345 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01002346 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01002347 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03002348 * Ensure that buffers are cleared after use if they contain sensitive data.
2349 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01002350 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
2351 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002352 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
2353 leaking 1 bit of the private key. Reported by prashantkspatil.
2354 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
2355 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01002356 sake of saving memory, but potentially leading to slight timing
2357 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002358 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01002359 after keypair generation.
2360 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01002361 (server-side). Could result in application crash, but only if an ALPN
2362 name larger than 16 bytes had been configured on the server.
2363 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02002364 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002365 manner.
2366
Gilles Peskinec82fbb42017-12-15 15:01:27 +01002367Features
2368 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02002369 * The selftest program can execute a subset of the tests based on command
2370 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01002371 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00002372 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01002373 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01002374 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03002375 * Add support for alternative implementations of GCM, selected by the
2376 configuration flag MBEDTLS_GCM_ALT.
2377 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03002378 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03002379 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03002380 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002381 with alternative implementation:
2382 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03002383 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03002384 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
2385 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
2386 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002387 with an alternative implementation:
2388 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00002389 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02002390 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00002391 * Add mechanism to provide alternative implementation of the DHM module.
2392
2393API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00002394 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00002395 independent setup and export of RSA contexts. Most notably,
2396 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
2397 up RSA contexts from partial key material and having them completed to the
2398 needs of the implementation automatically. This allows to setup private RSA
2399 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
2400 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01002401 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
2402 implementations of the RSA interface declared in rsa.h.
2403 * The following functions in the message digest modules (MD2, MD4, MD5,
2404 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
2405 The new functions change the return type from void to int to allow
2406 returning error codes when using MBEDTLS_<MODULE>_ALT.
2407 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01002408 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002409 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03002410 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
2411
Simon Butcher55fc4e02018-02-05 01:09:13 +00002412New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01002413 * Deprecate usage of RSA primitives with non-matching key-type
2414 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00002415 * Direct manipulation of structure fields of RSA contexts is deprecated.
2416 Users are advised to use the extended RSA API instead.
2417 * Deprecate usage of message digest functions that return void
2418 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
2419 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01002420 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
2421 that can return an error code.
2422 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
2423 parameters from RFC 3526 or the newly added parameters from RFC 7919.
2424 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002425 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
2426 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01002427 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002428 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002429 accepting DHM parameters in binary form, matching the new constants.
2430
2431Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01002432 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01002433 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01002434 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03002435 Found by projectgus and Jethro Beekman, #836.
2436 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
2437 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00002438 renegotiated handshakes would only accept signatures using SHA-1
2439 regardless of the peer's preferences, or fail if SHA-1 was disabled.
2440 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02002441 dates on leap years with 100 and 400 intervals are handled correctly. Found
2442 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01002443 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
2444 accepted. Generating these signatures required the private key.
2445 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01002446 Found independently by Florian in the mbed TLS forum and by Mishamax.
2447 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00002448 * Fix variable used before assignment compilation warnings with IAR
2449 toolchain. Found by gkerrien38.
2450 * Fix unchecked return codes from AES, DES and 3DES functions in
2451 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
2452 If a call to one of the functions of the cryptographic primitive modules
2453 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01002454 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
2455 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01002456 * Include configuration file in md.h, to fix compilation warnings.
2457 Reported by aaronmdjones in #1001
2458 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01002459 writing routines that prevented these functions to work with alternative
2460 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01002461 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00002462 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01002463 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00002464 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01002465 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002466 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00002467 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01002468 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01002469 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01002470 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
2471 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03002472 * Add size-checks for record and handshake message content, securing
2473 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01002474 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002475 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01002476 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
2477 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00002478 * Fix possible memory leaks in mbedtls_gcm_self_test().
2479 * Added missing return code checks in mbedtls_aes_self_test().
2480 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
2481 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01002482 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01002483 beforehand.
2484 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002485 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
2486 Found and fixed by Martijn de Milliano.
2487 * Fix an issue in the cipher decryption with the mode
2488 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01002489 Note, this padding mode is not used by the TLS protocol. Found and fixed by
2490 Micha Kraus.
2491 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
2492 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01002493 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
2494 mbedtls_sha512_init() is called before operating on the relevant context
2495 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00002496 reset it. Found independently by ccli8 on Github.
2497 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01002498 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
2499 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002500
Hanno Becker86e52302017-10-05 09:08:53 +01002501Changes
2502 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00002503 and the message digest. Further, allow enabling/disabling of authority
2504 identifier, subject identifier and basic constraints extensions.
2505 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
2506 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01002507 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01002508 on GitHub.
2509 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01002510 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
2511 undeclared dependency of the RSA module on the ASN.1 module.
2512 * Update all internal usage of deprecated message digest functions to the
2513 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00002514 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01002515 everywhere except some locations in the ssl_tls.c module.
2516 * Improve CTR_DRBG error handling by propagating underlying AES errors.
2517 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01002518 modules where the software implementation can be replaced by a hardware
2519 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002520 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01002521 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02002522
Simon Butcherb060cc22017-07-28 01:04:34 +01002523= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01002524
Simon Butcherf85c90a2017-07-27 15:11:52 +01002525Security
2526 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01002527 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
2528 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01002529 (default: 8) intermediates, even when it was not trusted. This could be
2530 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01002531 (the default), the handshake was correctly aborted).
2532 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01002533 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002534 Found by Laurent Simon.
2535
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01002536Features
2537 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01002538 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01002539 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01002540 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
2541 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002542 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02002543 cryptographic acceleration hardware.
2544
2545API Changes
2546 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01002547 API consistent with mbed TLS 2.5.0. Specifically removed the inline
2548 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01002549 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
2550 by James Cowgill. #978
2551 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01002552 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01002553 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01002554 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02002555 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02002556 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01002557
2558Bugfix
2559 * 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 +02002560 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01002561 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01002562 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
2563 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02002564 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01002565 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01002566 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
2567 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01002568 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01002569 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01002570 * Fix a potential integer overflow in the version verification for DER
2571 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00002572 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002573 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00002574 * Fix potential integer overflow in the version verification for DER
2575 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01002576 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002577 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01002578 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01002579 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01002580 constructed certificates to bypass the certificate verification check.
2581 * Fix a call to the libc function time() to call the platform abstraction
2582 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02002583 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01002584 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01002585
Simon Butcher3f2557e2017-08-01 18:06:12 +01002586Changes
2587 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01002588 64-bit division. This is useful on embedded platforms where 64-bit division
2589 created a dependency on external libraries. #708
2590 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01002591 accelerator code in the library leaves concurrency handling to the
2592 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01002593 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
2594 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01002595 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01002596 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01002597 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01002598
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002599= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01002600
2601Security
2602 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
2603 The issue could only happen client-side with renegotiation enabled.
2604 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02002605 (if the application layer sent data read from mbedtls_ssl_read()
2606 back to the server or to a third party). Can be triggered remotely.
2607 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02002608 certificate verification. SHA-1 can be turned back on with a compile-time
2609 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02002610 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
2611 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002612 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01002613 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002614
2615Bugfix
2616 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01002617 valid C and they prevented the test from compiling in Visual Studio 2015
2618 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002619 * Fix insufficient support for signature-hash-algorithm extension,
2620 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02002621 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01002622 when sending the alert failed. The fix makes sure not to hide the error
2623 that triggered the alert.
2624 * Fix SSLv3 renegotiation behaviour and stop processing data received from
2625 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01002626 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01002627 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002628 * Accept empty trusted CA chain in authentication mode
2629 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
2630 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
2631 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
2632 reflect bad EC curves within verification result.
2633 * Fix bug that caused the modular inversion function to accept the invalid
2634 modulus 1 and therefore to hang. Found by blaufish. #641.
2635 * Fix incorrect sign computation in modular exponentiation when the base is
2636 a negative MPI. Previously the result was always negative. Found by Guido
2637 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02002638 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02002639 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002640
2641Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00002642 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01002643 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00002644 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02002645 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01002646 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002647
Janos Follath45182a02017-03-23 10:41:56 +00002648= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01002649
Janos Follath5a1c0e72017-06-16 09:00:07 +01002650Security
2651 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00002652 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
2653 Simon.
2654 * Add exponent blinding to RSA private operations as a countermeasure
2655 against side-channel attacks like the cache attack described in
2656 https://arxiv.org/abs/1702.08719v2.
2657 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01002658 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002659
2660Features
2661 * Add hardware acceleration support for the Elliptic Curve Point module.
2662 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01002663 replacing the core functions and adding and alternative, module level
2664 replacement support for enabling the extension of the interface.
2665 * Add a new configuration option to 'mbedtls_ssl_config' to enable
2666 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00002667 behaviour has not changed, namely every configured CAs name is included.
2668
2669API Changes
2670 * The following functions in the AES module have been deprecated and replaced
2671 by the functions shown below. The new functions change the return type from
2672 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
2673 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
2674 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002675 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
2676
2677Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01002678 * Remove macros from compat-1.3.h that correspond to deleted items from most
2679 recent versions of the library. Found by Kyle Keen.
2680 * Fixed issue in the Threading module that prevented mutexes from
2681 initialising. Found by sznaider. #667 #843
2682 * Add checks in the PK module for the RSA functions on 64-bit systems.
2683 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002684 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00002685 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002686
Janos Follath182013f2016-10-25 10:50:22 +01002687= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00002688
2689Security
2690 * Add checks to prevent signature forgeries for very large messages while
2691 using RSA through the PK module in 64-bit systems. The issue was caused by
2692 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00002693 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
2694 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
2695 * Fixed potential livelock during the parsing of a CRL in PEM format in
2696 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
2697 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01002698 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
2699 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00002700 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00002701 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
2702 Introduced by interoperability fix for #513.
2703 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00002704 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00002705 triggered remotely for example with a maliciously constructed certificate
2706 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00002707 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01002708 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00002709
2710Bugfix
2711 * Fix output certificate verification flags set by x509_crt_verify_top() when
2712 traversing a chain of trusted CA. The issue would cause both flags,
2713 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00002714 set when the verification conditions are not met regardless of the cause.
2715 Found by Harm Verhagen and inestlerode. #665 #561
2716 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00002717 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
2718 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00002719 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00002720 x509_csr.c that are reported when building mbed TLS with a config.h that
2721 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
2722 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
2723 would compare 64 bits of the record counter instead of 48 bits as indicated
2724 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01002725 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01002726 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01002727 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00002728 the input string in PEM format to extract the different components. Found
2729 by Eyal Itkin.
2730 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
2731 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2732 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
2733 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00002734 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
2735 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00002736 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
2737 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00002738 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
2739 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00002740 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
2741 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00002742 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
2743 fix proposed by Guido Vranken. #722
2744 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02002745 Studio 2015 as well as the files themselves, to remove a build warning
2746 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00002747 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
2748 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
2749 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00002750 number to write in hexadecimal is negative and requires an odd number of
2751 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002752 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00002753 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00002754
2755= mbed TLS 2.4.1 branch released 2016-12-13
2756
2757Changes
2758 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2759 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01002760 Authentication – October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03002761
Andres AG60dbc932016-09-02 15:23:48 +01002762= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01002763
2764Security
2765 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2766 with RFC-5116 and could lead to session key recovery in very long TLS
2767 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2768 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01002769 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01002770 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01002771 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01002772 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03002773 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01002774
2775Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03002776 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2777 NIST SP 800-38B, RFC-4493 and RFC-4615.
2778 * Added hardware entropy selftest to verify that the hardware entropy source
2779 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01002780 * Added a script to print build environment info for diagnostic use in test
2781 scripts, which is also now called by all.sh.
2782 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01002783 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01002784 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01002785 * Added a configuration file config-no-entropy.h that configures the subset of
2786 library features that do not require an entropy source.
2787 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03002788 to configure the minimum number of bytes for entropy sources using the
2789 mbedtls_hardware_poll() function.
2790
2791Bugfix
2792 * Fix for platform time abstraction to avoid dependency issues where a build
2793 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01002794 configuration consistency checks to check_config.h
2795 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03002796 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2797 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03002798 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2799 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01002800 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01002801 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01002802 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01002803 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01002804 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01002805 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01002806 * Fixed pthread implementation to avoid unintended double initialisations
2807 and double frees. Found by Niklas Amnebratt.
2808 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01002809 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2810 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01002811 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01002812 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002813 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002814 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01002815 mbedtls_gcm_finish(). Found by cmiatpaar. #602
2816 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01002817 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002818 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01002819 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
2820 Found by subramanyam-c. #626
2821 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01002822 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03002823 certificate. Found by teumas. #513
2824 * Fix compilation without MBEDTLS_SELF_TEST enabled.
2825
2826Changes
2827 * Extended test coverage of special cases, and added new timing test suite.
2828 * Removed self-tests from the basic-built-test.sh script, and added all
2829 missing self-tests to the test suites, to ensure self-tests are only
2830 executed once.
2831 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01002832 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01002833 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01002834 * Added optimization for code space for X.509/OID based on configured
2835 features. Contributed by Aviv Palivoda.
2836 * Renamed source file library/net.c to library/net_sockets.c to avoid
2837 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01002838 net.c. For consistency, the corresponding header file, net.h, is marked as
2839 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002840 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01002841 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002842
Janos Follathcc4eba72016-02-10 16:25:55 +00002843= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00002844
Janos Follath3218b212016-02-10 16:14:10 +00002845Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002846 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
2847 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002848 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01002849 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00002850 (not triggerable remotely in (D)TLS).
2851 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00002852 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002853 SSL/TLS.
2854
2855Features
2856 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002857 function.
2858
2859Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002860 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002861 arguments where the same (in-place doubling). Found and fixed by Janos
2862 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002863 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01002864 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00002865 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00002866 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
2867 ECDSA was disabled in config.h . The leak didn't occur by default.
2868 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01002869 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00002870 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002871 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00002872 buffer after DER certificates to be included in the raw representation.
2873 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01002874 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2875 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01002876 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002877 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01002878 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01002879 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002880 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002881 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
2882
2883Changes
2884 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002885 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01002886 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
2887 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01002888 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2889 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002890 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2891 ignored, as required by RFC6101.
2892
2893= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002894
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002895Security
Simon Butcher00923c12015-12-22 19:04:24 +00002896 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002897 allocate memory. Only used for certificate generation, not triggerable
2898 remotely in SSL/TLS. Found by Rafał Przywara. #367
2899 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002900 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00002901 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002902 https://www.mitls.org/pages/attacks/SLOTH
2903
2904Bugfix
2905 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2906 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00002907 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002908 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01002909 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002910 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002911 * Fix suboptimal handling of unexpected records that caused interop issues
2912 with some peers over unreliable links. Avoid dropping an entire DTLS
2913 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002914 drop the record and look at subsequent records (if any are present) in
2915 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00002916
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002917= mbed TLS 2.2.0 released 2015-11-04
2918
2919Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00002920 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002921 once and some allocation fails. Cannot be forced remotely. Found by Guido
2922 Vranken, Intelworks.
2923 * Fix potential heap corruption on Windows when
2924 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002925 triggered remotely. Found by Guido Vranken, Intelworks.
2926 * Fix potential buffer overflow in some asn1_write_xxx() functions.
2927 Cannot be triggered remotely unless you create X.509 certificates based
2928 on untrusted input or write keys of untrusted origin. Found by Guido
2929 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002930 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002931 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002932 Janos Follath. #280 and #319
2933
2934Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002935 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2936 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002937 * Added a key extraction callback to accees the master secret and key
2938 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00002939
2940Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002941 * Self-signed certificates were not excluded from pathlen counting,
2942 resulting in some valid X.509 being incorrectly rejected. Found and fix
2943 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002944 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002945 exchange. Found and fix provided by Chris Hammond. #270
2946 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002947 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002948 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
2949 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
2950 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002951 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002952 minimum key size for end-entity certificates with RSA keys. Found by
2953 Matthew Page of Scannex Electronics Ltd.
2954 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002955 Found by Kurt Danielson. #292
2956 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
2957 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01002958 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002959 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002960
2961Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002962 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2963 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002964
2965= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002966
2967Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01002968 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002969 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002970 Intelworks.
2971 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
2972 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2973 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01002974 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002975 * Fix stack buffer overflow in pkcs12 decryption (used by
2976 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
2977 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2978 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2979 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2980 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002981 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01002982 require reading a string of close to or larger than 2^62 bytes.
2983 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002984 on crafted PEM input data. Found and fix provided by Guido Vranken,
2985 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
2986 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01002987 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01002988 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002989 Intelworks. Not trigerrable remotely in TLS.
2990 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
2991 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01002992 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002993 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01002994 authentication against a crafted CA cert. Cannot be triggered remotely
2995 unless you allow third parties to pick trust CAs for client auth.
2996 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01002997
2998Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01002999 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01003000 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003001 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02003002
3003Changes
3004 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
3005 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003006 * Fixed paths for check_config.h in example config files. (Found by bachp)
3007 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01003008
3009= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003010
Simon Butchera1a11282015-09-14 21:30:40 +01003011Security
3012 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02003013 signatures. (Found by Florian Weimer, Red Hat.)
3014 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
3015 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01003016 tries to continue the handshake after it failed (a misuse of the API).
3017 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
3018 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02003019
3020Bugfix
3021 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
3022 * Fix off-by-one error in parsing Supported Point Format extension that
3023 caused some handshakes to fail.
3024
3025Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01003026 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02003027 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02003028 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003029 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02003030 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
3031 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003032 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003033 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
3034 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02003035
3036= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02003037
3038Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003039 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02003040 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003041
3042Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02003043 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02003044 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
3045 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02003046 * Fix bug when parsing a ServerHello without extensions (found by David
3047 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02003048 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
3049 (found by Benoit Lecocq).
3050 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02003051 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02003052 * Fix compile error with armcc 5 with --gnu option.
3053 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02003054 (found by robotanarchy) (#232).
3055 * Fix bug in Makefile that prevented from installing without building the
3056 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01003057 * Fix missing -static-libgcc when building shared libraries for Windows
3058 with make.
3059 * Fix link error when building shared libraries for Windows with make.
3060 * Fix error when loading libmbedtls.so.
3061 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
3062 be always used (found by dcb314) (#235)
3063 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02003064 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02003065 Fredrik Axelsson) (#257)
3066 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02003067 * Fix memory corruption on client with overlong PSK identity, around
3068 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
3069 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02003070 * Fix unused function warning when using MBEDTLS_MDx_ALT or
3071 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
3072 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01003073
3074Changes
3075 * The PEM parser now accepts a trailing space at end of lines (#226).
3076 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02003077 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01003078 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01003079 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003080 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003081 (#220).
3082 * Prepend a "thread identifier" to debug messages (issue pointed out by
3083 Hugo Leisink) (#210).
3084 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
3085 length.
3086
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003087= mbed TLS 2.0.0 released 2015-07-13
3088
3089Features
3090 * Support for DTLS 1.0 and 1.2 (RFC 6347).
3091 * Ability to override core functions from MDx, SHAx, AES and DES modules
3092 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02003093 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003094 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02003095 preserve forward secrecy, and allows sharing across multiple contexts.
3096 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003097 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003098 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003099 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003100 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02003101 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02003102
3103API Changes
3104 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003105 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003106 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003107 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02003108 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003109 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003110 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003111 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02003112 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003113 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02003114 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003115 * The following _init() functions that could return errors have
3116 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003117 should generally be the first function called on this context after init:
3118 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003119 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003120 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02003121 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003122 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
3123 Note that for mbedtls_ssl_setup(), you need to be done setting up the
3124 ssl_config structure before calling it.
3125 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003126 ssl_set_session() and ssl_set_client_transport_id(), plus
3127 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003128 (see rename.pl and compat-1.3.h above) and their first argument's type
3129 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003130 * ssl_set_bio() changed signature (contexts merged, order switched, one
3131 additional callback for read-with-timeout).
3132 * The following functions have been introduced and must be used in callback
3133 implementations (SNI, PSK) instead of their *conf counterparts:
3134 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003135 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01003136 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003137 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01003138 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003139 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
3140 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02003141 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
3142 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003143 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003144 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003145 * mbedtls_ssl_conf_truncated_hmac() now returns void.
3146 * mbedtls_memory_buffer_alloc_init() now returns void.
3147 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003148 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003149 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01003150 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
3151 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
3152 * The following functions changed prototype to avoid an in-out length
3153 parameter:
3154 mbedtls_base64_encode()
3155 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02003156 mbedtls_mpi_write_string()
3157 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02003158 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02003159 changed type to "mbedtls_net_context *".
3160 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003161 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02003162 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02003163 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02003164 ecdsa_write_signature_det() was deprecated.
3165 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01003166 * Last argument of x509_crt_check_key_usage() and
3167 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
3168 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01003169 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02003170 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
3171 strings; use the new *_len variables instead of strlen().
3172 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00003173 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02003174 length parameter to include the terminating null byte for PEM input.
3175 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02003176 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003177 layer and the memory_buffer_alloc module changed accordingly.
3178 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02003179 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
3180 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003181 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
3182 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02003183 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003184 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
3185 Their 'port' argument type is changed to a string.
3186 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003187
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02003188Removals
3189 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02003190 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
3191 mbedtls_ecp_muladd().
3192 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02003193 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02003194 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003195 waiting function.
3196 * Removed test DHM parameters from the test certs module.
3197 * Removed the PBKDF2 module (use PKCS5).
3198 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
3199 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
3200 * Removed openssl.h (very partial OpenSSL compatibility layer).
3201 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
3202 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
3203 been removed (compiler is required to support 32-bit operations).
3204 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
3205 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003206 * Removed test program ssl_test, superseded by ssl-opt.sh.
3207 * Removed helper script active-config.pl
3208
3209New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003210 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003211 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003212
3213Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02003214 * Renamed a few headers to include _internal in the name. Those headers are
3215 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003216 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
3217 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01003218 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003219 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
3220 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003221 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003222 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02003223
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003224Default behavior changes
3225 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003226 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
3227 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01003228 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02003229 compile time.
3230 * The default authmode for SSL/TLS clients is now REQUIRED.
3231 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01003232 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003233 custom config.h
3234 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01003235 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02003236 chain verification.
3237 * Negotiation of truncated HMAC is now disabled by default on server too.
3238 * The following functions are now case-sensitive:
3239 mbedtls_cipher_info_from_string()
3240 mbedtls_ecp_curve_info_from_name()
3241 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003242 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003243 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02003244
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02003245Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01003246 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003247 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003248 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003249
3250API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003251 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
3252 new prototype, and mbedtls_ssl_set_read_timeout().
3253 * The following functions now return void:
3254 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02003255 mbedtls_ssl_conf_max_version()
3256 mbedtls_ssl_conf_min_version()
3257 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
3258 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02003259 an example implementation, see mbedtls_timing_delay_context and
3260 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003261 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003262 after a successful net_accept().
3263
3264Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003265 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
3266 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003267 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003268 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
3269
3270= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02003271
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01003272Security
3273 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02003274 extendedKeyUsage on the leaf certificate was lost (results not accessible
3275 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003276 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3277 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02003278
3279Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02003280 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02003281 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02003282 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01003283 * Add support for reading DH parameters with privateValueLength included
3284 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003285 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
3286 * Add support for id-at-uniqueIdentifier in X.509 names.
3287 * Add support for overriding snprintf() (except on Windows) and exit() in
3288 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00003289 * Add an option to use macros instead of function pointers in the platform
3290 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00003291 * Improved Makefiles for Windows targets by fixing library targets and making
3292 cross-compilation easier (thanks to Alon Bar-Lev).
3293 * The benchmark program also prints heap usage for public-key primitives
3294 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
3295 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
3296 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003297 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003298 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003299 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003300 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003301 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
3302 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01003303
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01003304Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01003305 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
3306 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02003307 * Fix bug in entropy.c when THREADING_C is also enabled that caused
3308 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02003309 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
3310 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02003311 * Fix bug in ssl_mail_client when password is longer that username (found
3312 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02003313 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
3314 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02003315 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
3316 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02003317 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02003318 doing it at runtime (using uname) rather that compile time.
3319 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
3320 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02003321 ssl_write() is called before the handshake is finished (introduced in
3322 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01003323 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01003324 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00003325 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3326 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00003327 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00003328 versions of mingw64 (found by kxjhlele).
3329 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00003330 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00003331 platforms.
3332 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
3333 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00003334 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02003335 in 1.3.10).
3336 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02003337 * Add missing dependency on SHA-256 in some x509 programs (reported by
3338 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003339 * Fix bug related to ssl_set_curves(): the client didn't check that the
3340 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02003341
3342Changes
3343 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02003344 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02003345 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003346 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003347 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00003348 * compat-1.2.h and openssl.h are deprecated.
3349 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003350 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00003351 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00003352 * ssl_set_own_cert() no longer calls pk_check_pair() since the
3353 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00003354 * Move from SHA-1 to SHA-256 in example programs using signatures
3355 (suggested by Thorsten Mühlfelder).
3356 * Remove some unneeded inclusions of header files from the standard library
3357 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003358 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02003359 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01003360 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003361
3362= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00003363Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003364 * NULL pointer dereference in the buffer-based allocator when the buffer is
3365 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003366 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003367 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003368 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003369 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003370 client certificate) (found using Codenomicon Defensics).
3371 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3372 (TLS server is not affected if it doesn't ask for a client certificate)
3373 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003374 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00003375 (TLS server is not affected if it doesn't ask for a client certificate)
3376 (found using Codenomicon Defensics).
3377 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003378 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003379 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003380
3381Features
3382 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003383 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01003384 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01003385 * Add function pk_check_pair() to test if public and private keys match.
3386 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01003387 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01003388 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02003389 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01003390 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01003391 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
3392 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003393 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01003394 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00003395 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
3396 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003397 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003398 ciphersuite/certificate.
3399
3400Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01003401 * Stack buffer overflow if ctr_drbg_update() is called with too large
3402 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003403 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
3404 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003405 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01003406 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01003407 by Julian Ospald).
3408 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00003409 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
3410 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00003411 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00003412 Peter Vaskovic).
3413 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00003414 * ssl_get_verify_result() now works even if the handshake was aborted due
3415 to a failed verification (found by Fredrik Axelsson).
3416 * Skip writing and parsing signature_algorithm extension if none of the
3417 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00003418 issue with some servers when a zero-length extension was sent. (Reported
3419 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003420 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01003421 (found by Hendrik van den Boogaard).
3422
3423Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01003424 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003425 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01003426 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01003427 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01003428 * Forbid repeated extensions in X.509 certificates.
3429 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01003430 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003431 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01003432 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01003433 * It is now possible to disable negotiation of truncated HMAC server-side
3434 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00003435 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003436 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02003437 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003438
3439= PolarSSL 1.3.9 released 2014-10-20
3440Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003441 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02003442 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
3443 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02003444 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02003445 (found using Codenomicon Defensics).
3446 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003447 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003448 Defensics).
3449
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02003450Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02003451 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02003452 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02003453 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02003454 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3455 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02003456 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003457 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
3458 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02003459 * ssl_read() could return non-application data records on server while
3460 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02003461 * Server-initiated renegotiation would fail with non-blocking I/O if the
3462 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02003463 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02003464 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02003465 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02003466 * x509_crt_parse() did not increase total_failed on PEM error
3467 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003468 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003469 Vialletelle).
3470
3471Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02003472 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
3473 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02003474 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
3475 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003476 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
3477 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02003478 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3479 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02003480 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003481 RSA keys.
3482 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003483 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02003484 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02003485
3486= PolarSSL 1.3.8 released 2014-07-11
3487Security
3488 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3489 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02003490 when a GCM suite was chosen.
3491
3492Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02003493 * Add CCM module and cipher mode to Cipher Layer
3494 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02003495 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02003496 modules (certificates, CRLs and CSRs).
3497 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02003498 * Add example config.h for PSK with CCM, optimized for low RAM usage.
3499 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02003500 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
3501 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02003502 * Add server-side enforcement of sent renegotiation requests
3503 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02003504 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02003505 ciphersuites to use and save some memory if the list is small.
3506
3507Changes
Paul Bakker34617722014-06-13 17:20:13 +02003508 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
3509 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02003510 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02003511 against unwanted compiler optimizations
3512 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02003513 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
3514 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02003515 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02003516 usage pattern
3517
Paul Bakker1ebc0c52014-05-22 15:47:58 +02003518Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02003519 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02003520 * Enforce alignment in the buffer allocator even if buffer is not aligned
3521 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02003522 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3523 size (found by TrustInSoft)
3524 * Fix WSAStartup() return value check (found by Peter Vaskovic)
3525 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02003526 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003527 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02003528 * Fix DER output of gen_key app (found by Gergely Budai)
3529 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003530 use with some ciphersuites and versions (RC4 in all versions, CBC with
3531 versions < TLS 1.1).
3532 * Very large records using more than 224 bytes of padding were incorrectly
3533 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02003534 * Very large records using less padding could cause a buffer overread of up
3535 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02003536 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
3537 been removed in 1.3.6.)
3538 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07003539 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02003540 1.3.6.)
3541 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02003542 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3543 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02003544 * Fix off-by-one error in parsing Supported Point Format extension that
3545 caused some handshakes to fail.
3546 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02003547 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02003548 (Failure rate <= 1/255 with common DHM moduli.)
3549 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02003550 * Fix base64_decode() to return and check length correctly (in case of
3551 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02003552 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02003553 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02003554
Paul Bakkerc73079a2014-04-25 16:34:30 +02003555= PolarSSL 1.3.7 released on 2014-05-02
3556Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02003557 * debug_set_log_mode() added to determine raw or full logging
3558 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02003559 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02003560 run-time
3561
3562Changes
Paul Bakker92478c32014-04-25 15:18:34 +02003563 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02003564 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02003565 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02003566 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02003567 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02003568 * Ciphersuites based on RC4 now have the lowest priority by default
3569
3570Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02003571 * Only iterate over actual certificates in ssl_write_certificate_request()
3572 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02003573 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02003574 Karger)
3575 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02003576 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
3577 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02003578 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02003579 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02003580 * rsa_check_pubkey() now allows an E up to N
3581 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02003582 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02003583 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00003584 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07003585 * Some parts of ssl_tls.c were compiled even when the module was disabled.
3586 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02003587 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02003588 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003589
Paul Bakker27e36d32014-04-08 12:33:37 +02003590= PolarSSL 1.3.6 released on 2014-04-11
3591
Paul Bakker1cfc4582014-04-09 15:25:13 +02003592Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003593 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02003594 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003595 * Enable verification of the keyUsage extension for CA and leaf
3596 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02003597 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02003598 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
3599
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02003600Changes
3601 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02003602 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02003603 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02003604 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003605 * Reject certificates with times not in UTC, per RFC 5280.
3606
3607Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02003608 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
3609 (Found by Watson Ladd.)
3610 * The notAfter date of some certificates was no longer checked since 1.3.5.
3611 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02003612 certificate. If the user-supplied chain contains only one certificates,
3613 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003614 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003615 TrustInSoft)
3616
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01003617Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02003618 * The length of various ClientKeyExchange messages was not properly checked.
3619 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02003620 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02003621 calculation of RR.
3622 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02003623 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
3624 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07003625 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
3626 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01003627 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
3628 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01003629 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02003630 error if the output buffer was just 1 byte too small.
3631 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02003632 * Calling pk_debug() on an RSA-alt key would segfault.
3633 * 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 +02003634 * Potential buffer overwrite in pem_write_buffer() because of low length
3635 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003636 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01003637 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003638
3639= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003640Features
Paul Bakker6a28e722014-02-06 13:41:55 +01003641 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01003642 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01003643 * Single Platform compatilibity layer (for memory / printf / fprintf)
3644 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003645 * Ability to force the entropy module to use SHA-256 as its basis
3646 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01003647 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01003648 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01003649 * Support for reading EC keys that use SpecifiedECDomain in some cases.
3650 * Entropy module now supports seed writing and reading
3651
Paul Bakker47703a02014-02-06 15:01:20 +01003652Changes
3653 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01003654 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01003655 now thread-safe if POLARSSL_THREADING_C defined
3656 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003657 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3658 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003659 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01003660 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003661 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003662 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3663
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01003664Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003665 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01003666 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01003667 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003668 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01003669 * Forbid sequence number wrapping
3670 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003671 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003672 TrustInSoft)
3673
3674Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003675 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01003676 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01003677 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01003678 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01003679 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01003680 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10003681 * Fixed dependency issues in test suite
3682 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003683 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3684 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01003685 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003686 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003687 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003688 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01003689 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003690 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01003691 * ssl_srv was leaking memory when client presented a timed out ticket
3692 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01003693 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3694 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01003695 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01003696 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003697 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01003698 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01003699
Paul Bakker0ac99ca2014-01-22 13:08:44 +01003700= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01003701Features
Paul Bakker556efba2014-01-24 15:38:12 +01003702 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01003703 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01003704 * Support for AES CFB8 mode
3705 * Support for deterministic ECDSA (RFC 6979)
3706
3707Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01003708 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01003709 * Replaced expired test certificate
3710 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01003711 * net module handles timeouts on blocking sockets better (found by Tilman
3712 Sauerbeck)
3713 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01003714
3715Security
Paul Bakker3eb96732014-01-22 13:08:19 +01003716 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01003717 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01003718
3719= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01003720Features
3721 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01003722 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01003723 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01003724 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01003725 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01003726 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01003727 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01003728 * SSL Pthread-based server example added (ssl_pthread_server)
3729
3730Changes
3731 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01003732 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01003733 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01003734 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01003735 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01003736 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01003737 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01003738 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003739 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01003740
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003741Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01003742 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01003743 * Fixed X.509 hostname comparison (with non-regular characters)
3744 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01003745 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01003746 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01003747 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01003748 * Memory leak in benchmark application
3749 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01003750 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3751 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003752 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01003753 ssl_write_certificate() (found by TrustInSoft)
3754
3755Security
3756 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003757 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01003758
3759= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01003760Features
Paul Bakker16421222013-10-28 14:37:09 +01003761 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01003762 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01003763 * Support for Camellia-GCM mode and ciphersuites
3764
Paul Bakkere1121b62013-10-31 14:37:37 +01003765Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01003766 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003767 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01003768 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01003769 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01003770
Paul Bakker677377f2013-10-28 12:54:26 +01003771Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003772 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01003773 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01003774 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01003775 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003776 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003777 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01003778 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01003779 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003780 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02003781
3782= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02003783Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02003784 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02003785 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02003786 * Support for RSA-PSK key-exchange and ciphersuites
3787
Paul Bakker16770332013-10-11 09:59:44 +02003788Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02003789 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003790 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02003791 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3792 * config.h is more script-friendly
3793
3794Bugfix
3795 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02003796 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003797 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02003798 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02003799 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02003800 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02003801 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003802 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01003803
3804= PolarSSL 1.3.0 released on 2013-10-01
3805Features
3806 * Elliptic Curve Cryptography module added
3807 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02003808 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3809 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003810 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003811 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02003812 * Ability to specify allowed ciphersuites based on the protocol version.
3813 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02003814 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02003815 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02003816 * Threading abstraction layer added (dummy / pthread / alternate)
3817 * Public Key abstraction layer added
3818 * Parsing Elliptic Curve keys
3819 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003820 * Support for max_fragment_length extension (RFC 6066)
3821 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02003822 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02003823 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
3824 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003825 * Certificate Request (CSR) generation with extensions (key_usage,
3826 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003827 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02003828 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00003829 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01003830 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01003831 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003832
3833Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003834 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3835 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01003836 * Introduced separate SSL Ciphersuites module that is based on
3837 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02003838 * Internals for SSL module adapted to have separate IV pointer that is
3839 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003840 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02003841 prototypes for the RSA sign and verify functions changed as a result
3842 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02003843 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003844 and maximum protocol version
3845 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02003846 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02003847 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02003848 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
3849 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02003850 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003851 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
3852 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003853 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003854 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02003855
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003856Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02003857 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02003858 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003859 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02003860 * Fixed file descriptor leaks
3861
3862Security
3863 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003864 (found by Cyril Arnaud and Pierre-Alain Fouque)
3865
3866
3867= Version 1.2.14 released 2015-05-??
3868
3869Security
3870 * Fix potential invalid memory read in the server, that allows a client to
3871 crash it remotely (found by Caj Larsson).
3872 * Fix potential invalid memory read in certificate parsing, that allows a
3873 client to crash the server remotely if client authentication is enabled
3874 (found using Codenomicon Defensics).
3875 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3876 https://dl.acm.org/citation.cfm?id=2714625
3877
3878Bugfix
3879 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3880 * Fix hardclock() (only used in the benchmarking program) with some
3881 versions of mingw64 (found by kxjhlele).
3882 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3883 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3884 platforms (found with Coverity Scan).
3885
3886= Version 1.2.13 released 2015-02-16
3887Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3888 this will be made in the 1.2 branch at this point.
3889
3890Security
3891 * Fix remotely-triggerable uninitialised pointer dereference caused by
3892 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3893 for a client certificate) (found using Codenomicon Defensics).
3894 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3895 (TLS server is not affected if it doesn't ask for a client certificate)
3896 (found using Codenomicon Defensics).
3897 * Fix potential stack overflow while parsing crafted X.509 certificates
3898 (TLS server is not affected if it doesn't ask for a client certificate)
3899 found using Codenomicon Defensics).
3900 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3901 (TLS server is not affected if it doesn't ask for a client certificate).
3902
3903Bugfix
3904 * Fix potential undefined behaviour in Camellia.
3905 * Fix memory leaks in PKCS#5 and PKCS#12.
3906 * Stack buffer overflow if ctr_drbg_update() is called with too large
3907 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3908 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3909 in 1.2.12).
3910 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3911 Peter Vaskovic).
3912 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3913 * ssl_get_verify_result() now works even if the handshake was aborted due
3914 to a failed verification (found by Fredrik Axelsson).
3915 * Skip writing and parsing signature_algorithm extension if none of the
3916 key exchanges enabled needs certificates. This fixes a possible interop
3917 issue with some servers when a zero-length extension was sent. (Reported
3918 by Peter Dettman.)
3919 * On a 0-length input, base64_encode() did not correctly set output length
3920 (found by Hendrik van den Boogaard).
3921
3922Changes
3923 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3924 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003925 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3926 length of an X.509 verification chain (default = 8).
3927= Version 1.2.12 released 2014-10-24
3928
3929Security
3930 * Remotely-triggerable memory leak when parsing some X.509 certificates
3931 (server is not affected if it doesn't ask for a client certificate).
3932 (Found using Codenomicon Defensics.)
3933
3934Bugfix
3935 * Fix potential bad read in parsing ServerHello (found by Adrien
3936 Vialletelle).
3937 * ssl_close_notify() could send more than one message in some circumstances
3938 with non-blocking I/O.
3939 * x509_crt_parse() did not increase total_failed on PEM error
3940 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3941 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3942 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3943 * ssl_read() could return non-application data records on server while
3944 renegotation was pending, and on client when a HelloRequest was received.
3945 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3946
3947Changes
3948 * X.509 certificates with more than one AttributeTypeAndValue per
3949 RelativeDistinguishedName are not accepted any more.
3950 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3951 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003952 * Accept spaces at end of line or end of buffer in base64_decode().
3953
3954= Version 1.2.11 released 2014-07-11
3955Features
3956 * Entropy module now supports seed writing and reading
3957
3958Changes
3959 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3960 * Improvements to the CMake build system, contributed by Julian Ospald.
3961 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3962 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3963 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3964 * Use UTC time to check certificate validity.
3965 * Reject certificates with times not in UTC, per RFC 5280.
3966 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3967 against unwanted compiler optimizations
3968
3969Security
3970 * Forbid change of server certificate during renegotiation to prevent
3971 "triple handshake" attack when authentication mode is optional (the
3972 attack was already impossible when authentication is required).
3973 * Check notBefore timestamp of certificates and CRLs from the future.
3974 * Forbid sequence number wrapping
3975 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3976 TrustInSoft)
3977 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3978 It was possible to crash the server (and client) using crafted messages
3979 when a GCM suite was chosen.
3980
3981Bugfix
3982 * Fixed X.509 hostname comparison (with non-regular characters)
3983 * SSL now gracefully handles missing RNG
3984 * crypt_and_hash app checks MAC before final decryption
3985 * Fixed x509_crt_parse_path() bug on Windows platforms
3986 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3987 TrustInSoft)
3988 * Fixed potential overflow in certificate size verification in
3989 ssl_write_certificate() (found by TrustInSoft)
3990 * Fix ASM format in bn_mul.h
3991 * Potential memory leak in bignum_selftest()
3992 * Replaced expired test certificate
3993 * ssl_mail_client now terminates lines with CRLF, instead of LF
3994 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3995 * Fixed testing with out-of-source builds using cmake
3996 * Fixed version-major intolerance in server
3997 * Fixed CMake symlinking on out-of-source builds
3998 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3999 Alex Wilson.)
4000 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
4001 out_ctr failed
4002 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
4003 of one of them failed
4004 * x509_get_current_time() uses localtime_r() to prevent thread issues
4005 * Some example server programs were not sending the close_notify alert.
4006 * Potential memory leak in mpi_exp_mod() when error occurs during
4007 calculation of RR.
4008 * Improve interoperability by not writing extension length in ClientHello
4009 when no extensions are present (found by Matthew Page)
4010 * rsa_check_pubkey() now allows an E up to N
4011 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
4012 * mpi_fill_random() was creating numbers larger than requested on
4013 big-endian platform when size was not an integer number of limbs
4014 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
4015 * Stricter check on SSL ClientHello internal sizes compared to actual packet
4016 size (found by TrustInSoft)
4017 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
4018 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
4019 interpret semicolons as comment delimiters (found by Barry K. Nathan).
4020 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
4021 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02004022 tight buffers)
4023
4024= Version 1.2.10 released 2013-10-07
4025Changes
4026 * Changed RSA blinding to a slower but thread-safe version
4027
4028Bugfix
4029 * Fixed memory leak in RSA as a result of introduction of blinding
4030 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004031 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02004032
4033= Version 1.2.9 released 2013-10-01
4034Changes
4035 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
4036
4037Bugfix
4038 * Fixed potential memory leak when failing to resume a session
4039 * Fixed potential file descriptor leaks (found by Remi Gacogne)
4040 * Minor fixes
4041
4042Security
4043 * Fixed potential heap buffer overflow on large hostname setting
4044 * Fixed potential negative value misinterpretation in load_file()
4045 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02004046 (found by Cyril Arnaud and Pierre-Alain Fouque)
4047
4048= Version 1.2.8 released 2013-06-19
4049Features
4050 * Parsing of PKCS#8 encrypted private key files
4051 * PKCS#12 PBE and derivation functions
4052 * Centralized module option values in config.h to allow user-defined
4053 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
4054
4055Changes
4056 * HAVEGE random generator disabled by default
4057 * Internally split up x509parse_key() into a (PEM) handler function
4058 and specific DER parser functions for the PKCS#1 and unencrypted
4059 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00004060 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02004061 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
4062 config.h)
4063 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
4064 old PBKDF2 module
4065
4066Bugfix
4067 * Secure renegotiation extension should only be sent in case client
4068 supports secure renegotiation
4069 * Fixed offset for cert_type list in ssl_parse_certificate_request()
4070 * Fixed const correctness issues that have no impact on the ABI
4071 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00004072 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02004073 instead of the x509parse_crt() wrapper that can also parse PEM
4074 certificates
4075 * x509parse_crtpath() is now reentrant and uses more portable stat()
4076 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
4077 * Fixed values for 2-key Triple DES in cipher layer
4078 * ssl_write_certificate_request() can handle empty ca_chain
4079
4080Security
4081 * A possible DoS during the SSL Handshake, due to faulty parsing of
4082 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4083
4084= Version 1.2.7 released 2013-04-13
4085Features
4086 * Ability to specify allowed ciphersuites based on the protocol version.
4087
4088Changes
4089 * Default Blowfish keysize is now 128-bits
4090 * Test suites made smaller to accommodate Raspberry Pi
4091
4092Bugfix
4093 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01004094 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01004095
4096= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01004097Bugfix
4098 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01004099 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01004100 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01004101 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01004102 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01004103 * Fixed assembly code for ARM (Thumb and regular) for some compilers
4104
4105Changes
4106 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01004107 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
4108 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01004109 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
4110 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01004111 * Re-added handling for SSLv2 Client Hello when the define
4112 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01004113 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01004114 information (not the entire chain)
4115
4116Security
Paul Bakker8804f692013-02-28 18:06:26 +01004117 * Removed further timing differences during SSL message decryption in
4118 ssl_decrypt_buf()
4119 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01004120 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01004121 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004122
4123= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01004124Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004125 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01004126 * Debug messages about padding errors during SSL message decryption are
4127 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01004128 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004129 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01004130 POLARSSL_SSL_ALL_ALERT_MESSAGES
4131
4132Security
4133 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01004134 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01004135
Paul Bakker68884e32013-01-07 18:20:04 +01004136= Version 1.2.4 released 2013-01-25
4137Changes
Paul Bakker1961b702013-01-25 14:49:24 +01004138 * More advanced SSL ciphersuite representation and moved to more dynamic
4139 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01004140 * Added ssl_handshake_step() to allow single stepping the handshake process
4141
Paul Bakker21dca692013-01-03 11:41:08 +01004142Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01004143 * Memory leak when using RSA_PKCS_V21 operations fixed
4144 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01004145 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01004146 without DN list
4147
4148= Version 1.2.3 released 2012-11-26
4149Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004150 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01004151
4152= Version 1.2.2 released 2012-11-24
4153Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004154 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01004155 data
Paul Bakker7c90da92012-11-23 14:02:40 +01004156 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004157
4158Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01004159 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01004160 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00004161
4162= Version 1.2.1 released 2012-11-20
4163Changes
4164 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00004165 bottom-up (Peer cert depth is 0)
4166
Paul Bakkerd9374b02012-11-02 11:02:58 +00004167Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00004168 * Fixes for MSVC6
4169 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01004170 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4171 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00004172 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00004173 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004174 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00004175
4176= Version 1.2.0 released 2012-10-31
4177Features
4178 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00004179 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
4180 default!
4181 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00004182 * Added support for multi-domain certificates through the X509 Subject
4183 Alternative Name extension
4184 * Added preliminary ASN.1 buffer writing support
4185 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00004186 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00004187 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00004188 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00004189 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00004190 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004191 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004192 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00004193 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00004194 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00004195 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00004196 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00004197 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00004198 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00004199 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00004200 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00004201 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00004202 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00004203 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00004204 * Added option to add minimum accepted SSL/TLS protocol version
4205
Paul Bakker048d04e2012-02-12 17:31:04 +00004206Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00004207 * Removed redundant POLARSSL_DEBUG_MSG define
4208 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00004209 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00004210 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00004211 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00004212 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
4213 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00004214 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00004215 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00004216 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
4217 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00004218 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00004219 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00004220 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00004221 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00004222 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00004223
4224Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00004225 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00004226 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00004227 * Fixed potential heap corruption in x509_name allocation
4228 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004229 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00004230 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00004231 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00004232 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00004233 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00004234 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00004235 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00004236 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00004237 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00004238 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00004239
4240Security
Paul Bakker452d5322012-04-05 12:07:34 +00004241 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004242 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02004243
4244= Version 1.1.8 released on 2013-10-01
4245Bugfix
4246 * Fixed potential memory leak when failing to resume a session
4247 * Fixed potential file descriptor leaks
4248
4249Security
4250 * Potential buffer-overflow for ssl_read_record() (independently found by
4251 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
4252 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02004253 * Potential heap buffer overflow on large hostname setting
4254
4255= Version 1.1.7 released on 2013-06-19
4256Changes
4257 * HAVEGE random generator disabled by default
4258
4259Bugfix
4260 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00004261 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02004262 instead of the x509parse_crt() wrapper that can also parse PEM
4263 certificates
4264 * Fixed values for 2-key Triple DES in cipher layer
4265 * ssl_write_certificate_request() can handle empty ca_chain
4266
4267Security
4268 * A possible DoS during the SSL Handshake, due to faulty parsing of
4269 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4270
4271= Version 1.1.6 released on 2013-03-11
4272Bugfix
4273 * Fixed net_bind() for specified IP addresses on little endian systems
4274
4275Changes
4276 * Allow enabling of dummy error_strerror() to support some use-cases
4277 * Debug messages about padding errors during SSL message decryption are
4278 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
4279
4280Security
4281 * Removed timing differences during SSL message decryption in
4282 ssl_decrypt_buf()
4283 * Removed timing differences due to bad padding from
4284 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01004285 operations
4286
4287= Version 1.1.5 released on 2013-01-16
4288Bugfix
4289 * Fixed MPI assembly for SPARC64 platform
4290 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
4291 * mpi_add_abs() now correctly handles adding short numbers to long numbers
4292 with carry rollover
4293 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
4294 * Prevent reading over buffer boundaries on X509 certificate parsing
4295 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
4296 #52)
4297 * Fixed possible segfault in mpi_shift_r() (found by Manuel
4298 Pégourié-Gonnard)
4299 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4300 Pégourié-Gonnard)
4301 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
4302 * Memory leak when using RSA_PKCS_V21 operations fixed
4303 * Handle encryption with private key and decryption with public key as per
4304 RFC 2313
4305 * Fixes for MSVC6
4306
4307Security
4308 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00004309 Vanderbeken)
4310
4311= Version 1.1.4 released on 2012-05-31
4312Bugfix
4313 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
4314 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00004315 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
4316
4317= Version 1.1.3 released on 2012-04-29
4318Bugfix
4319 * Fixed random MPI generation to not generate more size than requested.
4320
4321= Version 1.1.2 released on 2012-04-26
4322Bugfix
4323 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
4324 Hui Dong)
4325
4326Security
4327 * Fixed potential memory corruption on miscrafted client messages (found by
4328 Frama-C team at CEA LIST)
4329 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00004330 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004331
4332= Version 1.1.1 released on 2012-01-23
4333Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00004334 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00004335 (Closes ticket #47, found by Hugo Leisink)
4336 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004337 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00004338 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00004339
4340= Version 1.1.0 released on 2011-12-22
4341Features
Darryl Green11999bb2018-03-13 15:22:58 +00004342 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00004343 SSL contexts without needing to set all non-connection-specific
4344 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00004345 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00004346 supported version to a server to help buggy server implementations.
4347 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00004348 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00004349 introspection functions (Closes ticket #40)
4350 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00004351 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00004352 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004353 entropy sources
4354
Paul Bakkerd246ed32011-10-06 13:18:27 +00004355Changes
4356 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00004357 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00004358 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00004359 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00004360 * Added an EXPLICIT tag number parameter to x509_get_ext()
4361 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00004362 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
4363 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00004364 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00004365 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00004366 * Loads of minimal changes to better support WINCE as a build target
4367 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00004368 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
4369 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00004370 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
4371 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01004372 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00004373 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00004374 a consequence in library code and programs
4375 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01004376 * Added permissive certificate parsing to x509parse_crt() and
4377 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00004378 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004379 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004380 * All error codes are now negative. Even on mermory failures and IO errors.
4381
4382Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00004383 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
4384 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00004385 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
4386 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00004387 * Allowed X509 key usage parsing to accept 4 byte values instead of the
4388 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00004389 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
4390 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00004391 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00004392 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00004393 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00004394 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004395 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00004396 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00004397
4398= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00004399Features
Paul Bakker343a8702011-06-09 14:27:58 +00004400 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00004401 * Added rsa_encrypt and rsa_decrypt simple example programs.
4402
4403Changes
4404 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00004405 codes instead of integers
4406
4407Bugfix
4408 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00004409 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004410
4411= Version 0.99-pre5 released on 2011-05-26
4412Features
Paul Bakkera35aa542013-03-06 17:06:21 +01004413 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00004414 (AES CTR, Camellia CTR, XTEA CBC) including the option to
4415 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00004416 * Functions requiring File System functions can now be disabled
4417 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00004418 * A error_strerror function() has been added to translate between
4419 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00004420 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004421 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00004422 * Added ssl_mail_client and ssl_fork_server as example programs.
4423
4424Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004425 * Major argument / variable rewrite. Introduced use of size_t
4426 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00004427 better unsigned / signed use. Renamed internal bigint types
4428 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00004429 * mpi_init() and mpi_free() now only accept a single MPI
4430 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01004431 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00004432 is now done with a PLUS instead of an OR as error codes
4433 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01004434 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
4435 net_recv() now returns 0 on EOF instead of
4436 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
4437 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00004438 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
4439 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01004440 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00004441 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00004442 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00004443
4444= Version 0.99-pre4 released on 2011-04-01
4445Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00004446 * Added support for PKCS#1 v2.1 encoding and thus support
4447 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00004448 * Reading of Public Key files incorporated into default x509
4449 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00004450 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004451 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01004452
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004453Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004454 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00004455 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01004456 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004457 does not zeroize memory in advance anymore. Use rsa_init()
4458 before parsing a key or keyfile!
4459
4460Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01004461 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00004462 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
4463 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00004464 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
4465 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004466 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00004467 length salt lengths
4468
Paul Bakker96743fc2011-02-12 14:30:57 +00004469= Version 0.99-pre3 released on 2011-02-28
4470This release replaces version 0.99-pre2 which had possible copyright issues.
4471Features
Paul Bakkera9507c02011-02-12 15:27:28 +00004472 * Parsing PEM private keys encrypted with DES and AES
4473 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00004474 * Added crl_app program to allow easy reading and
4475 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01004476
Paul Bakker96743fc2011-02-12 14:30:57 +00004477Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004478 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00004479 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00004480 systems only using DER encoding
4481
4482Bugfixes
4483 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00004484 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00004485 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004486 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004487 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004488 certificates (found by Mads Kiilerich)
4489 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01004490 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00004491 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00004492 found by Boris Krasnovskiy)
4493
4494Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01004495 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00004496 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00004497 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00004498
Paul Bakkerb63b0af2011-01-13 17:54:59 +00004499= Version 0.99-pre1 released on 2011-01-30
4500Features
Paul Bakker1b57b062011-01-06 15:48:19 +00004501Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00004502 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00004503 * Added reading of DHM context from memory and file
4504 * Improved X509 certificate parsing to include extended
4505 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00004506 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00004507 against the available CRLs
4508 * Detection for DES weak keys and parity bits added
4509 * Improvements to support integration in other
4510 applications:
4511 + Added generic message digest and cipher wrapper
4512 + Improved information about current capabilities,
4513 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00004514 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00004515 verification to allow external blacklisting
4516 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00004517 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00004518 libpkcs11-helper library
4519
4520Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00004521 * x509parse_time_expired() checks time in addition to
4522 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01004523 * The ciphers member of ssl_context and the cipher member
4524 of ssl_session have been renamed to ciphersuites and
4525 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00004526 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00004527 altogether
4528
4529= Version 0.14.0 released on 2010-08-16
4530Features
4531 * Added support for SSL_EDH_RSA_AES_128_SHA and
4532 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
4533 * Added compile-time and run-time version information
4534 * Expanded ssl_client2 arguments for more flexibility
4535 * Added support for TLS v1.1
4536
4537Changes
4538 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01004539 * Removed dependency on rand() in rsa_pkcs1_encrypt().
4540 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00004541 changed the prototype of rsa_pkcs1_encrypt(),
4542 rsa_init() and rsa_gen_key().
4543 * Some SSL defines were renamed in order to avoid
4544 future confusion
4545
4546Bug fixes
4547 * Fixed CMake out of source build for tests (found by
4548 kkert)
4549 * rsa_check_private() now supports PKCS1v2 keys as well
4550 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
4551 generator
4552
4553= Version 0.13.1 released on 2010-03-24
4554Bug fixes
4555 * Fixed Makefile in library that was mistakenly merged
4556 * Added missing const string fixes
4557
4558= Version 0.13.0 released on 2010-03-21
4559Features
4560 * Added option parsing for host and port selection to
4561 ssl_client2
4562 * Added support for GeneralizedTime in X509 parsing
4563 * Added cert_app program to allow easy reading and
4564 printing of X509 certificates from file or SSL
4565 connection.
4566
4567Changes
4568 * Added const correctness for main code base
4569 * X509 signature algorithm determination is now
4570 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01004571 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00004572 identical interface (returning int result values)
4573 * Changed ARC4 to use separate input/output buffer
4574 * Added reset function for HMAC context as speed-up
4575 for specific use-cases
4576
4577Bug fixes
4578 * Fixed bug resulting in failure to send the last
4579 certificate in the chain in ssl_write_certificate() and
4580 ssl_write_certificate_request() (found by fatbob)
4581 * Added small fixes for compiler warnings on a Mac
4582 (found by Frank de Brabander)
4583 * Fixed algorithmic bug in mpi_is_prime() (found by
4584 Smbat Tonoyan)
4585
4586= Version 0.12.1 released on 2009-10-04
4587Changes
4588 * Coverage test definitions now support 'depends_on'
4589 tagging system.
4590 * Tests requiring specific hashing algorithms now honor
4591 the defines.
4592
4593Bug fixes
4594 * Changed typo in #ifdef in x509parse.c (found
4595 by Eduardo)
4596
4597= Version 0.12.0 released on 2009-07-28
4598Features
4599 * Added CMake makefiles as alternative to regular Makefiles.
4600 * Added preliminary Code Coverage tests for AES, ARC4,
4601 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
4602 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
4603 and X509parse.
4604
4605Changes
4606 * Error codes are not (necessarily) negative. Keep
4607 this is mind when checking for errors.
4608 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
4609 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
4610 * Changed interface for AES and Camellia setkey functions
4611 to indicate invalid key lengths.
4612
4613Bug fixes
4614 * Fixed include location of endian.h on FreeBSD (found by
4615 Gabriel)
4616 * Fixed include location of endian.h and name clash on
4617 Apples (found by Martin van Hensbergen)
4618 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01004619 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00004620 (found by code coverage tests)
4621 * Prevented use of long long in bignum if
4622 POLARSSL_HAVE_LONGLONG not defined (found by Giles
4623 Bathgate).
4624 * Fixed incorrect handling of negative strings in
4625 mpi_read_string() (found by code coverage tests).
4626 * Fixed segfault on handling empty rsa_context in
4627 rsa_check_pubkey() and rsa_check_privkey() (found by
4628 code coverage tests).
4629 * Fixed incorrect handling of one single negative input
4630 value in mpi_add_abs() (found by code coverage tests).
4631 * Fixed incorrect handling of negative first input
4632 value in mpi_sub_abs() (found by code coverage tests).
4633 * Fixed incorrect handling of negative first input
4634 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
4635 change also affects mpi_write_string() (found by code
4636 coverage tests).
4637 * Corrected is_prime() results for 0, 1 and 2 (found by
4638 code coverage tests).
4639 * Fixed Camellia and XTEA for 64-bit Windows systems.
4640
4641= Version 0.11.1 released on 2009-05-17
4642 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
4643 SHA-512 in rsa_pkcs1_sign()
4644
4645= Version 0.11.0 released on 2009-05-03
4646 * Fixed a bug in mpi_gcd() so that it also works when both
4647 input numbers are even and added testcases to check
4648 (found by Pierre Habouzit).
4649 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
4650 one way hash functions with the PKCS#1 v1.5 signing and
4651 verification.
4652 * Fixed minor bug regarding mpi_gcd located within the
4653 POLARSSL_GENPRIME block.
4654 * Fixed minor memory leak in x509parse_crt() and added better
4655 handling of 'full' certificate chains (found by Mathias
4656 Olsson).
4657 * Centralized file opening and reading for x509 files into
4658 load_file()
4659 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01004660 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00004661 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
4662 padlock and timing code.
4663 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
4664 responsible for crashes and unwanted behaviour.
4665 * Added support for Certificate Revocation List (CRL) parsing.
4666 * Added support for CRL revocation to x509parse_verify() and
4667 SSL/TLS code.
4668 * Fixed compatibility of XTEA and Camellia on a 64-bit system
4669 (found by Felix von Leitner).
4670
4671= Version 0.10.0 released on 2009-01-12
4672 * Migrated XySSL to PolarSSL
4673 * Added XTEA symmetric cipher
4674 * Added Camellia symmetric cipher
4675 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
4676 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
4677 * Fixed dangerous bug that can cause a heap overflow in
4678 rsa_pkcs1_decrypt (found by Christophe Devine)
4679
4680================================================================
4681XySSL ChangeLog
4682
4683= Version 0.9 released on 2008-03-16
4684
4685 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
4686 * Enabled support for large files by default in aescrypt2.c
4687 * Preliminary openssl wrapper contributed by David Barrett
4688 * Fixed a bug in ssl_write() that caused the same payload to
4689 be sent twice in non-blocking mode when send returns EAGAIN
4690 * Fixed ssl_parse_client_hello(): session id and challenge must
4691 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
4692 * Added user-defined callback debug function (Krystian Kolodziej)
4693 * Before freeing a certificate, properly zero out all cert. data
4694 * Fixed the "mode" parameter so that encryption/decryption are
4695 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01004696 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00004697 * Correctly handle the case in padlock_xcryptcbc() when input or
4698 output data is non-aligned by falling back to the software
4699 implementation, as VIA Nehemiah cannot handle non-aligned buffers
4700 * Fixed a memory leak in x509parse_crt() which was reported by Greg
4701 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
4702 Matthew Page who reported several bugs
4703 * Fixed x509_get_ext() to accept some rare certificates which have
4704 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
4705 * Added support on the client side for the TLS "hostname" extension
4706 (patch contributed by David Patino)
4707 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
4708 string is passed as the CN (bug reported by spoofy)
4709 * Added an option to enable/disable the BN assembly code
4710 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
4711 * Disabled obsolete hash functions by default (MD2, MD4); updated
4712 selftest and benchmark to not test ciphers that have been disabled
4713 * Updated x509parse_cert_info() to correctly display byte 0 of the
4714 serial number, setup correct server port in the ssl client example
4715 * Fixed a critical denial-of-service with X.509 cert. verification:
4716 peer may cause xyssl to loop indefinitely by sending a certificate
4717 for which the RSA signature check fails (bug reported by Benoit)
4718 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
4719 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
4720 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
4721 * Modified ssl_parse_client_key_exchange() to protect against
4722 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
4723 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
4724 * Updated rsa_gen_key() so that ctx->N is always nbits in size
4725 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
4726 David Barrett and Dusan Semen
4727
4728= Version 0.8 released on 2007-10-20
4729
4730 * Modified the HMAC functions to handle keys larger
4731 than 64 bytes, thanks to Stephane Desneux and gary ng
4732 * Fixed ssl_read_record() to properly update the handshake
4733 message digests, which fixes IE6/IE7 client authentication
4734 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
4735 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
4736 * Added user-defined callbacks for handling I/O and sessions
4737 * Added lots of debugging output in the SSL/TLS functions
4738 * Added preliminary X.509 cert. writing by Pascal Vizeli
4739 * Added preliminary support for the VIA PadLock routines
4740 * Added AES-CFB mode of operation, contributed by chmike
4741 * Added an SSL/TLS stress testing program (ssl_test.c)
4742 * Updated the RSA PKCS#1 code to allow choosing between
4743 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
4744 * Updated ssl_read() to skip 0-length records from OpenSSL
4745 * Fixed the make install target to comply with *BSD make
4746 * Fixed a bug in mpi_read_binary() on 64-bit platforms
4747 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
4748 * Fixed a long standing memory leak in mpi_is_prime()
4749 * Replaced realloc with malloc in mpi_grow(), and set
4750 the sign of zero as positive in mpi_init() (reported
4751 by Jonathan M. McCune)
4752
4753= Version 0.7 released on 2007-07-07
4754
4755 * Added support for the MicroBlaze soft-core processor
4756 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4757 connections from being established with non-blocking I/O
4758 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4759 * Fixed the "PIC register ebx clobbered in asm" bug
4760 * Added HMAC starts/update/finish support functions
4761 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4762 * Fixed the net_set_*block routines, thanks to Andreas
4763 * Added a few demonstration programs: md5sum, sha1sum,
4764 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4765 * Added new bignum import and export helper functions
4766 * Rewrote README.txt in program/ssl/ca to better explain
4767 how to create a test PKI
4768
4769= Version 0.6 released on 2007-04-01
4770
4771 * Ciphers used in SSL/TLS can now be disabled at compile
4772 time, to reduce the memory footprint on embedded systems
4773 * Added multiply assembly code for the TriCore and modified
4774 havege_struct for this processor, thanks to David Patiño
4775 * Added multiply assembly code for 64-bit PowerPCs,
4776 thanks to Peking University and the OSU Open Source Lab
4777 * Added experimental support of Quantum Cryptography
4778 * Added support for autoconf, contributed by Arnaud Cornet
4779 * Fixed "long long" compilation issues on IA-64 and PPC64
4780 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4781 was not being correctly defined on ARM and MIPS
4782
4783= Version 0.5 released on 2007-03-01
4784
4785 * Added multiply assembly code for SPARC and Alpha
4786 * Added (beta) support for non-blocking I/O operations
4787 * Implemented session resuming and client authentication
4788 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4789 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4790 * Improved the performance of the EDH key exchange
4791 * Fixed a bug that caused valid packets with a payload
4792 size of 16384 bytes to be rejected
4793
4794= Version 0.4 released on 2007-02-01
4795
4796 * Added support for Ephemeral Diffie-Hellman key exchange
4797 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4798 * Various improvement to the modular exponentiation code
4799 * Rewrote the headers to generate the API docs with doxygen
4800 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4801 generated) and in ssl_parse_client_hello (max. client
4802 version was not properly set), thanks to Didier Rebeix
4803 * Fixed another bug in ssl_parse_client_hello: clients with
4804 cipherlists larger than 96 bytes were incorrectly rejected
4805 * Fixed a couple memory leak in x509_read.c
4806
4807= Version 0.3 released on 2007-01-01
4808
4809 * Added server-side SSLv3 and TLSv1.0 support
4810 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01004811 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00004812 * Fixed a bug in the CBC code, thanks to dowst; also,
4813 the bignum code is no longer dependent on long long
4814 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4815 * Updated timing.c for improved compatibility with i386
4816 and 486 processors, thanks to Arnaud Cornet
4817
4818= Version 0.2 released on 2006-12-01
4819
4820 * Updated timing.c to support ARM and MIPS arch
4821 * Updated the MPI code to support 8086 on MSVC 1.5
4822 * Added the copyright notice at the top of havege.h
4823 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4824 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4825 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4826 * Fixed a bug in rsa_check_privkey that would wrongly cause
4827 valid RSA keys to be dismissed (thanks to oldwolf)
4828 * Fixed a bug in mpi_is_prime that caused some primes to fail
4829 the Miller-Rabin primality test
4830
4831 I'd also like to thank Younès Hafri for the CRUX linux port,
4832 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4833 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00004834
4835= Version 0.1 released on 2006-11-01