blob: 4033839d994c815da4661599cf601a28acfba1d7 [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
Paul Elliottf18db1f2023-03-23 11:23:35 +00003= Mbed TLS 2.28.3 branch released 2023-03-28
4
5Features
6 * Use HOSTCC (if it is set) when compiling C code during generation of the
7 configuration-independent files. This allows them to be generated when
8 CC is set for cross compilation.
9 * AES-NI is now supported with Visual Studio.
10 * AES-NI is now supported in 32-bit builds, or when MBEDTLS_HAVE_ASM
11 is disabled, when compiling with GCC or Clang or a compatible compiler
12 for a target CPU that supports the requisite instructions (for example
13 gcc -m32 -msse2 -maes -mpclmul). (Generic x86 builds with GCC-like
14 compilers still require MBEDTLS_HAVE_ASM and a 64-bit target.)
15
16Security
17 * MBEDTLS_AESNI_C, which is enabled by default, was silently ignored on
18 builds that couldn't compile the GCC-style assembly implementation
19 (most notably builds with Visual Studio), leaving them vulnerable to
20 timing side-channel attacks. There is now an intrinsics-based AES-NI
21 implementation as a fallback for when the assembly one cannot be used.
22
23Bugfix
24 * Fix a build issue on Windows where the source and build directory could
25 not be on different drives (#5751).
26 * Fix possible integer overflow in mbedtls_timing_hardclock(), which
27 could cause a crash for certain platforms & compiler options.
28 * Fix IAR compiler warnings. Fixes #6924.
29 * Fix a bug in the build where directory names containing spaces were
30 causing generate_errors.pl to error out resulting in a build failure.
31 Fixes issue #6879.
32 * Fix compile error where MBEDTLS_RSA_C and MBEDTLS_X509_CRT_WRITE_C are
33 defined, but MBEDTLS_PK_RSA_ALT_SUPPORT is not defined. Fixes #3174.
34 * Fix a build issue when defining MBEDTLS_TIMING_ALT and MBEDTLS_SELF_TEST.
35 The library would not link if the user didn't provide an external self-test
36 function. The self-test is now provided regardless of the choice of
37 internal/alternative timing implementation. Fixes #6923.
38 * mbedtls_x509write_crt_set_serial() now explicitly rejects serial numbers
39 whose binary representation is longer than 20 bytes. This was already
40 forbidden by the standard (RFC5280 - section 4.1.2.2) and now it's being
41 enforced also at code level.
42 * Fix potential undefined behavior in mbedtls_mpi_sub_abs(). Reported by
43 Pascal Cuoq using TrustInSoft Analyzer in #6701; observed independently by
44 Aaron Ucko under Valgrind.
45 * Fix behavior of certain sample programs which could, when run with no
46 arguments, access uninitialized memory in some cases. Fixes #6700 (which
47 was found by TrustInSoft Analyzer during REDOCS'22) and #1120.
48 * Fix build errors in test programs when MBEDTLS_CERTS_C is disabled.
49 Fixes #6243.
50 * Fix parsing of X.509 SubjectAlternativeName extension. Previously,
51 malformed alternative name components were not caught during initial
52 certificate parsing, but only on subsequent calls to
53 mbedtls_x509_parse_subject_alt_name(). Fixes #2838.
54 * Fix bug in conversion from OID to string in
55 mbedtls_oid_get_numeric_string(). OIDs such as 2.40.0.25 are now printed
56 correctly.
57 * Reject OIDs with overlong-encoded subidentifiers when converting
58 them to a string.
59 * Reject OIDs with subidentifier values exceeding UINT_MAX. Such
60 subidentifiers can be valid, but Mbed TLS cannot currently handle them.
61 * Reject OIDs that have unterminated subidentifiers, or (equivalently)
62 have the most-significant bit set in their last byte.
63 * Silence a warning about an unused local variable in bignum.c on
64 some architectures. Fixes #7166.
65 * Silence warnings from clang -Wdocumentation about empty \retval
66 descriptions, which started appearing with Clang 15. Fixes #6960.
67 * Fix undefined behavior in mbedtls_ssl_read() and mbedtls_ssl_write() if
68 len argument is 0 and buffer is NULL.
69
70Changes
71 * The C code follows a new coding style. This is transparent for users but
72 affects contributors and maintainers of local patches. For more
73 information, see
74 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/rewrite-branch-for-coding-style/
75 * Changed the default MBEDTLS_ECP_WINDOW_SIZE from 6 to 2.
76 As tested in issue 6790, the correlation between this define and
77 RSA decryption performance has changed lately due to security fixes.
78 To fix the performance degradation when using default values the
79 window was reduced from 6 to 2, a value that gives the best or close
80 to best results when tested on Cortex-M4 and Intel i7.
81
Aditya Deshpandea26938a2022-12-08 11:01:53 +000082= Mbed TLS 2.28.2 branch released 2022-12-14
83
84Security
85 * Fix potential heap buffer overread and overwrite in DTLS if
86 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
87 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Tom Cosgrovefc09b752023-03-08 15:58:47 +000088 * Fix an issue where an adversary with access to precise enough information
89 about memory accesses (typically, an untrusted operating system attacking
90 a secure enclave) could recover an RSA private key after observing the
91 victim performing a single private-key operation if the window size used
92 for the exponentiation was 3 or smaller. Found and reported by Zili KOU,
Aditya Deshpandea26938a2022-12-08 11:01:53 +000093 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
94 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
95 and Test in Europe 2023.
96
97Bugfix
98 * Fix a long-standing build failure when building x86 PIC code with old
99 gcc (4.x). The code will be slower, but will compile. We do however
100 recommend upgrading to a more recent compiler instead. Fixes #1910.
101 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
102 Contributed by Kazuyuki Kimura to fix #2020.
103 * Use double quotes to include private header file psa_crypto_cipher.h.
104 Fixes 'file not found with <angled> include' error
105 when building with Xcode.
106 * Fix handling of broken symlinks when loading certificates using
107 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
108 broken link is encountered, skip the broken link and continue parsing
109 other certificate files. Contributed by Eduardo Silva in #2602.
110 * Fix a compilation error when using CMake with an IAR toolchain.
111 Fixes #5964.
Aditya Deshpanded6f774f2022-12-09 12:52:43 +0000112 * Fix bugs and missing dependencies when building and testing
113 configurations with only one encryption type enabled in TLS 1.2.
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000114 * Provide the missing definition of mbedtls_setbuf() in some configurations
115 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
116 * Fix compilation errors when trying to build with
117 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
aditya-deshpande-armbf864162022-12-09 10:36:50 +0000118 * Fix memory leak in ssl_parse_certificate_request() caused by
119 mbedtls_x509_get_name() not freeing allocated objects in case of error.
120 Change mbedtls_x509_get_name() to clean up allocated objects on error.
Aditya Deshpandea26938a2022-12-08 11:01:53 +0000121 * Fix checks on PK in check_config.h for builds with PSA and RSA. This does
122 not change which builds actually work, only moving a link-time error to
123 an early check.
124 * Fix ECDSA verification, where it was not always validating the
125 public key. This bug meant that it was possible to verify a
126 signature with an invalid public key, in some cases. Reported by
127 Guido Vranken using Cryptofuzz in #4420.
128 * Fix a possible null pointer dereference if a memory allocation fails
129 in TLS PRF code. Reported by Michael Madsen in #6516.
130 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
131 bytes when parsing certificates containing a binary RFC 4108
132 HardwareModuleName as a Subject Alternative Name extension. Hardware
133 serial numbers are now rendered in hex format. Fixes #6262.
134 * Fix bug in error reporting in dh_genprime.c where upon failure,
135 the error code returned by mbedtls_mpi_write_file() is overwritten
136 and therefore not printed.
137 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
138 with A > 0 created an unintended representation of the value 0 which was
139 not processed correctly by some bignum operations. Fix this. This had no
140 consequence on cryptography code, but might affect applications that call
141 bignum directly and use negative numbers.
142 * Fix undefined behavior (typically harmless in practice) of
143 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
144 when both operands are 0 and the left operand is represented with 0 limbs.
145 * Fix undefined behavior (typically harmless in practice) when some bignum
146 functions receive the most negative value of mbedtls_mpi_sint. Credit
147 to OSS-Fuzz. Fixes #6597.
148 * Fix undefined behavior (typically harmless in practice) in PSA ECB
149 encryption and decryption.
150
Dave Rodgmanfa827b42022-07-06 17:04:24 +0100151= Mbed TLS 2.28.1 branch released 2022-07-11
Dave Rodgman6743ec42022-07-06 16:45:41 +0100152
153Default behavior changes
154 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
155 for IV lengths other than 12. The library was silently overwriting this
156 length with 12, but did not inform the caller about it. Fixes #4301.
157
158Features
159 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
160 feature requirements in the file named by the new macro
161 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
162 Furthermore you may name an additional file to include after the main
163 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
164
165Security
166 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
167 module before freeing them. These buffers contain secret key material, and
168 could thus potentially leak the key through freed heap.
169 * Fix a potential heap buffer overread in TLS 1.2 server-side when
170 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
171 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
172 is selected. This may result in an application crash or potentially an
173 information leak.
174 * Fix a buffer overread in DTLS ClientHello parsing in servers with
175 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
176 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
177 after the end of the SSL input buffer. The buffer overread only happens
178 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
179 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
180 and possibly up to 571 bytes with a custom cookie check function.
181 Reported by the Cybeats PSI Team.
182
183Bugfix
184 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
185 * Fix several bugs (warnings, compiler and linker errors, test failures)
186 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
187 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
188 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
189 client would fail to check that the curve selected by the server for
190 ECDHE was indeed one that was offered. As a result, the client would
191 accept any curve that it supported, even if that curve was not allowed
192 according to its configuration. Fixes #5291.
193 * Fix unit tests that used 0 as the file UID. This failed on some
194 implementations of PSA ITS. Fixes #3838.
195 * Fix API violation in mbedtls_md_process() test by adding a call to
196 mbedtls_md_starts(). Fixes #2227.
197 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
198 to catch bad uses of time.h.
199 * Fix the library search path when building a shared library with CMake
200 on Windows.
201 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
202 potentially leading to corrupted alert messages being sent in case
203 the function needs to be re-called after initially returning
204 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
205 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but none of
206 MBEDTLS_SSL_HW_RECORD_ACCEL, MBEDTLS_SSL_EXPORT_KEYS or MBEDTLS_DEBUG_C,
207 DTLS handshakes using CID would crash due to a null pointer dereference.
208 Fix this. Fixes #3998.
209 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
210 documentation stated that the `allowed_pks` field applies to signatures
211 only, but in fact it does apply to the public key type of the end entity
212 certificate, too. Fixes #1992.
213 * Fix PSA cipher multipart operations using ARC4. Previously, an IV was
214 required but discarded. Now, an IV is rejected, as it should be.
215 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
216 not NULL and val_len is zero.
217 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
218 applicable. Fixes #5735.
219 * Fix a bug in the x25519 example program where the removal of
220 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
221 #3191.
222 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
223 GeneralizedTime. Fixes #5465.
Dave Rodgmanfa827b42022-07-06 17:04:24 +0100224 * Fix order value of curve x448.
Dave Rodgman6743ec42022-07-06 16:45:41 +0100225 * Fix string representation of DNs when outputting values containing commas
226 and other special characters, conforming to RFC 1779. Fixes #769.
227 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
228 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
229 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
230 memory conditions.
231 * Fix server connection identifier setting for outgoing encrypted records
232 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
233 connection identifier, the Mbed TLS client now properly sends the server
234 connection identifier in encrypted record headers. Fix #5872.
235 * Fix a null pointer dereference when performing some operations on zero
236 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
237 by 2, and mbedtls_mpi_write_string() in base 2).
238 * Fix record sizes larger than 16384 being sometimes accepted despite being
239 non-compliant. This could not lead to a buffer overflow. In particular,
240 application data size was already checked correctly.
241
242Changes
243 * Assume source files are in UTF-8 when using MSVC with CMake.
244
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000245= mbed TLS 2.28.0 branch released 2021-12-17
Dave Rodgman0798a822021-12-15 11:48:21 +0000246
247API changes
248 * Some fields of mbedtls_ssl_session and mbedtls_ssl_config are in a
249 different order. This only affects applications that define such
250 structures directly or serialize them.
251
252Requirement changes
253 * Sign-magnitude and one's complement representations for signed integers are
254 not supported. Two's complement is the only supported representation.
255
256Removals
257 * Remove config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES,
258 which allowed SHA-1 in the default TLS configuration for certificate
259 signing. It was intended to facilitate the transition in environments
260 with SHA-1 certificates. SHA-1 is considered a weak message digest and
261 its use constitutes a security risk.
262 * Remove the partial support for running unit tests via Greentea on Mbed OS,
263 which had been unmaintained since 2018.
264
265Features
266 * The identifier of the CID TLS extension can be configured by defining
267 MBEDTLS_TLS_EXT_CID at compile time.
268 * Warn if errors from certain functions are ignored. This is currently
269 supported on GCC-like compilers and on MSVC and can be configured through
270 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
271 (where supported) for critical functions where ignoring the return
272 value is almost always a bug. Enable the new configuration option
273 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
274 is currently implemented in the AES, DES and md modules, and will be
275 extended to other modules in the future.
276 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
277 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000278 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Dave Rodgman0798a822021-12-15 11:48:21 +0000279 * Add PSA API definition for ARIA.
280
281Security
282 * Zeroize several intermediate variables used to calculate the expected
283 value when verifying a MAC or AEAD tag. This hardens the library in
284 case the value leaks through a memory disclosure vulnerability. For
285 example, a memory disclosure vulnerability could have allowed a
286 man-in-the-middle to inject fake ciphertext into a DTLS connection.
287 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
288 from the output buffer. This fixes a potential policy bypass or decryption
289 oracle vulnerability if the output buffer is in memory that is shared with
290 an untrusted application.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000291 * Fix a double-free that happened after mbedtls_ssl_set_session() or
292 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
293 (out of memory). After that, calling mbedtls_ssl_session_free()
294 and mbedtls_ssl_free() would cause an internal session buffer to
295 be free()'d twice.
Dave Rodgman0798a822021-12-15 11:48:21 +0000296
297Bugfix
298 * Stop using reserved identifiers as local variables. Fixes #4630.
299 * The GNU makefiles invoke python3 in preference to python except on Windows.
300 The check was accidentally not performed when cross-compiling for Windows
301 on Linux. Fix this. Fixes #4774.
302 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
303 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
304 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
305 * Don't use the obsolete header path sys/fcntl.h in unit tests.
306 These header files cause compilation errors in musl.
307 Fixes #4969.
308 * Fix missing constraints on x86_64 and aarch64 assembly code
309 for bignum multiplication that broke some bignum operations with
310 (at least) Clang 12.
311 Fixes #4116, #4786, #4917, #4962.
312 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
313 * Failures of alternative implementations of AES or DES single-block
314 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
315 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
316 This does not concern the implementation provided with Mbed TLS,
317 where this function cannot fail, or full-module replacements with
318 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
319 * Some failures of HMAC operations were ignored. These failures could only
320 happen with an alternative implementation of the underlying hash module.
321 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
322 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
323 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
324 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
325 This algorithm now accepts only the same salt length for verification
326 that it produces when signing, as documented. Use the new algorithm
327 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
328 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
329 for algorithm values that fully encode the hashing step, as per the PSA
330 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
331 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
332 all algorithms that can be used with psa_{sign,verify}_hash(), including
333 these two.
334 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
335 not to list other shared libraries they need.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000336 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
337 exceeds 2^32. Fixes #4884.
Dave Rodgman0798a822021-12-15 11:48:21 +0000338 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
339 version 11.
340 * Fix the build when no SHA2 module is included. Fixes #4930.
341 * Fix the build when only the bignum module is included. Fixes #4929.
342 * Fix a potential invalid pointer dereference and infinite loop bugs in
343 pkcs12 functions when the password is empty. Fix the documentation to
344 better describe the inputs to these functions and their possible values.
345 Fixes #5136.
Dave Rodgman0798a822021-12-15 11:48:21 +0000346 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
347 operations psa_mac_compute() and psa_mac_sign_setup().
348 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
349 operations psa_mac_verify() and psa_mac_verify_setup().
350
351Changes
352 * Set config option MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE to be
353 disabled by default.
354 * Improve the performance of base64 constant-flow code. The result is still
355 slower than the original non-constant-flow implementation, but much faster
356 than the previous constant-flow implementation. Fixes #4814.
357 * Indicate in the error returned if the nonce length used with
358 ChaCha20-Poly1305 is invalid, and not just unsupported.
Dave Rodgmanf00d9a22021-12-15 11:52:54 +0000359 * The mbedcrypto library includes a new source code module constant_time.c,
360 containing various functions meant to resist timing side channel attacks.
361 This module does not have a separate configuration option, and functions
362 from this module will be included in the build as required. Currently
363 most of the interface of this module is private and may change at any
364 time.
Dave Rodgman0798a822021-12-15 11:48:21 +0000365
Paul Elliottd925ee02021-07-01 17:58:07 +0100366= mbed TLS 2.27.0 branch released 2021-07-07
Paul Elliott67123322021-07-01 17:37:55 +0100367
368API changes
369 * Update AEAD output size macros to bring them in line with the PSA Crypto
370 API version 1.0 spec. This version of the spec parameterizes them on the
371 key type used, as well as the key bit-size in the case of
372 PSA_AEAD_TAG_LENGTH.
373 The old versions of these macros were renamed and deprecated as follows:
374 - PSA_AEAD_TAG_LENGTH -> PSA_AEAD_TAG_LENGTH_1_ARG
375 - PSA_AEAD_ENCRYPT_OUTPUT_SIZE -> PSA_AEAD_ENCRYPT_OUTPUT_SIZE_2_ARG
376 - PSA_AEAD_DECRYPT_OUTPUT_SIZE -> PSA_AEAD_DECRYPT_OUTPUT_SIZE_2_ARG
377 - PSA_AEAD_UPDATE_OUTPUT_SIZE -> PSA_AEAD_UPDATE_OUTPUT_SIZE_2_ARG
378 - PSA_AEAD_FINISH_OUTPUT_SIZE -> PSA_AEAD_FINISH_OUTPUT_SIZE_1_ARG
379 - PSA_AEAD_VERIFY_OUTPUT_SIZE -> PSA_AEAD_VERIFY_OUTPUT_SIZE_1_ARG
380 * Implement one-shot cipher functions, psa_cipher_encrypt and
381 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
382 specification.
383
384Requirement changes
385 * The library now uses the %zu format specifier with the printf() family of
386 functions, so requires a toolchain that supports it. This change does not
387 affect the maintained LTS branches, so when contributing changes please
388 bear this in mind and do not add them to backported code.
389
390Features
391 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
392 signature with a specific salt length. This function allows to validate
393 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
394 Meuter in PR #3183.
395 * Added support for built-in driver keys through the PSA opaque crypto
396 driver interface. Refer to the documentation of
397 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
398 * Implement psa_sign_message() and psa_verify_message().
399 * The new function mbedtls_mpi_random() generates a random value in a
400 given range uniformly.
401 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
402 PSA Cryptograpy API 1.0.0 specification.
403 * MBEDTLS_ECP_MAX_BITS is now determined automatically from the configured
404 curves and no longer needs to be configured explicitly to save RAM.
405
406Security
Dave Rodgman699ccf82021-07-05 18:10:27 +0100407 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
408 private keys and of blinding values for DHM and elliptic curves (ECP)
409 computations. Reported by FlorianF89 in #4245.
410 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
411 An adversary who is capable of very precise timing measurements could
412 learn partial information about the leading bits of the nonce used for the
413 signature, allowing the recovery of the private key after observing a
414 large number of signature operations. This completes a partial fix in
415 Mbed TLS 2.20.0.
Paul Elliott67123322021-07-01 17:37:55 +0100416 * It was possible to configure MBEDTLS_ECP_MAX_BITS to a value that is
417 too small, leading to buffer overflows in ECC operations. Fail the build
418 in such a case.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000419 * Fix an issue where an adversary with access to precise enough information
420 about memory accesses (typically, an untrusted operating system attacking
421 a secure enclave) could recover an RSA private key after observing the
422 victim performing a single private-key operation. Found and reported by
Paul Elliott67123322021-07-01 17:37:55 +0100423 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
Tom Cosgrovefc09b752023-03-08 15:58:47 +0000424 * Fix an issue where an adversary with access to precise enough timing
425 information (typically, a co-located process) could recover a Curve25519
426 or Curve448 static ECDH key after inputting a chosen public key and
427 observing the victim performing the corresponding private-key operation.
428 Found and reported by Leila Batina, Lukas Chmielewski, Björn Haase, Niels
429 Samwel and Peter Schwabe.
Paul Elliott67123322021-07-01 17:37:55 +0100430
431Bugfix
432 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
433 get printf format specifier warnings.
434 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
Paul Elliott40d3fd32021-07-02 11:08:07 +0100435 lead to seed file corruption in the case where the path to the seed file is
Paul Elliott67123322021-07-01 17:37:55 +0100436 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
437 Krasnoshchok in #3616.
438 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
439 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
440 in line with version 1.0.0 of the specification. Fix #4162.
441 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
442 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
443 to create is not valid, bringing them in line with version 1.0.0 of the
444 specification. Fix #4271.
445 * Fix some cases in the bignum module where the library constructed an
446 unintended representation of the value 0 which was not processed
447 correctly by some bignum operations. This could happen when
448 mbedtls_mpi_read_string() was called on "-0", or when
449 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
450 the arguments being negative and the other being 0. Fixes #4643.
451 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
452 zero. Fixes #1792
453 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
454 defined. Fixes #4217.
455 * Fix an incorrect error code when parsing a PKCS#8 private key.
456 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
457 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
458 minimum size was rounded down to the nearest multiple of 8.
459 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
460 defined to specific values. If the code is used in a context
461 where these are already defined, this can result in a compilation
462 error. Instead, assume that if they are defined, the values will
463 be adequate to build Mbed TLS.
464 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
465 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
466 was disabled. Fix the dependency. Fixes #4472.
467 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
468 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
469 nonetheless, resulting in undefined reference errors when building a
470 shared library. Reported by Guillermo Garcia M. in #4411.
471 * Fix test suite code on platforms where int32_t is not int, such as
472 Arm Cortex-M. Fixes #4530.
473 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
474 directive in a header and a missing initialization in the self-test.
475 * Fix a missing initialization in the Camellia self-test, affecting
476 MBEDTLS_CAMELLIA_ALT implementations.
477 * Restore the ability to configure PSA via Mbed TLS options to support RSA
478 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
479 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
480 Fixes #4512.
481 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
482 (when the encrypt-then-MAC extension is not in use) with some ALT
483 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
484 the affected side to wrongly reject valid messages. Fixes #4118.
485 * Remove outdated check-config.h check that prevented implementing the
486 timing module on Mbed OS. Fixes #4633.
487 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
488 about missing inputs.
489 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
490 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
491 * Fix a resource leak in a test suite with an alternative AES
492 implementation. Fixes #4176.
493 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
494 could notably be triggered by setting the TLS debug level to 3 or above
495 and using a Montgomery curve for the key exchange. Reported by lhuang04
496 in #4578. Fixes #4608.
497 * psa_verify_hash() was relying on implementation-specific behavior of
Paul Elliottf3e1a252021-07-02 14:28:53 +0100498 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
499 implementations. This reliance is now removed. Fixes #3990.
Paul Elliott67123322021-07-01 17:37:55 +0100500 * Disallow inputs of length different from the corresponding hash when
501 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
502 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
503 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
504 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
505 could not be triggered by code that constructed A with one of the
506 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
507 those always built an mpi object with at least one limb.
508 Credit to OSS-Fuzz. Fixes #4641.
509 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
510 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
511 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
512 * The PSA API no longer allows the creation or destruction of keys with a
513 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
514 can now only be used as intended, for keys that cannot be modified through
515 normal use of the API.
516 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
517 in all the right places. Include it from crypto_platform.h, which is
518 the natural place. Fixes #4649.
519 * mbedtls_pk_sign() and mbedtls_pk_verify() and their extended and
520 restartable variants now always honor the specified hash length if
521 nonzero. Before, for RSA, hash_len was ignored in favor of the length of
522 the specified hash algorithm.
523 * Fix which alert is sent in some cases to conform to the
524 applicable RFC: on an invalid Finished message value, an
525 invalid max_fragment_length extension, or an
526 unsupported extension used by the server.
Paul Elliott3ca48922021-07-01 18:08:30 +0100527 * Correct (change from 12 to 13 bytes) the value of the macro describing the
528 maximum nonce length returned by psa_aead_generate_nonce().
Paul Elliott67123322021-07-01 17:37:55 +0100529
530Changes
531 * Add extra printf compiler warning flags to builds.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100532 * Fix memsan build false positive in x509_crt.c with Clang 11
Paul Elliott67123322021-07-01 17:37:55 +0100533 * Fix the setting of the read timeout in the DTLS sample programs.
534 * Remove the AES sample application programs/aes/aescrypt2 which shows
535 bad cryptographic practice. Fix #1906.
536 * Alternative implementations of CMAC may now opt to not support 3DES as a
537 CMAC block cipher, and still pass the CMAC self test.
538 * Remove configs/config-psa-crypto.h, which was identical to the default
539 configuration except for having some extra cryptographic mechanisms
540 enabled and for unintended differences. This configuration was primarily
541 intended to demonstrate the PSA API, and lost most of its usefulness when
542 MBEDTLS_PSA_CRYPTO_C became enabled by default.
543 * When building the test suites with GNU make, invoke python3 or python, not
544 python2, which is no longer supported upstream.
Dave Rodgman4614cb12021-07-05 18:50:01 +0100545 * When using session cache based session resumption on the server,
546 double-check that custom session cache implementations return
547 sessions which are consistent with the negotiated ciphersuite
548 and compression method.
Paul Elliott40d3fd32021-07-02 11:08:07 +0100549 * Fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
Paul Elliott67123322021-07-01 17:37:55 +0100550 When that flag is on, standard GNU C printf format specifiers
551 should be used.
552 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
553 during ECC operations at a negligible performance cost.
554 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
555 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
556 when their input has length 0. Note that this is an implementation detail
557 and can change at any time, so this change should be transparent, but it
558 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
559 now writing an empty string where it previously wrote one or more
560 zero digits when operating from values constructed with an mpi_read
561 function and some mpi operations.
562 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
563 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
564 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
565 is also applied when loading a key from storage.
566
Dave Rodgman74755e42021-03-08 18:35:44 +0000567= mbed TLS 2.26.0 branch released 2021-03-08
568
569API changes
570 * Renamed the PSA Crypto API output buffer size macros to bring them in line
571 with version 1.0.0 of the specification.
572 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
573 in bits rather than bytes, with an additional flag to indicate if the
574 size may have been rounded up to a whole number of bytes.
575 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
576 with version 1.0.0 of the specification.
577
578Default behavior changes
579 * In mbedtls_rsa_context objects, the ver field was formerly documented
580 as always 0. It is now reserved for internal purposes and may take
581 different values.
582
583New deprecations
584 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
585 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
586 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
587 deprecated.
588 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
589 have been renamed, and the old names deprecated.
590
591Features
592 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
593 CTR_DRBG is used by default if it is available, but you can override
594 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
595 Fix #3354.
596 * Automatic fallback to a software implementation of ECP when
597 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
598 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
599 * The PSA crypto subsystem can now be configured to use less static RAM by
600 tweaking the setting for the maximum amount of keys simultaneously in RAM.
601 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
602 can exist simultaneously. It has a sensible default if not overridden.
603 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
604 now use an external random generator instead of the library's own
605 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
606 and see the documentation of mbedtls_psa_external_get_random() for details.
607 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
608 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
609 random generator with mbedtls_xxx functions. See the documentation of
610 mbedtls_psa_get_random() for details.
611 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
612 minimum MAC or tag length thanks to the new wildcards
613 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
614 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
615
616Security
617 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
618 nonce from entropy. Applications were affected if they called
619 mbedtls_ctr_drbg_set_nonce_len(), if they called
620 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
621 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
622 In such cases, a random nonce was necessary to achieve the advertised
623 security strength, but the code incorrectly used a constant instead of
624 entropy from the nonce.
625 Found by John Stroebel in #3819 and fixed in #3973.
626 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
627 |A| - |B| where |B| is larger than |A| and has more limbs (so the
628 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
629 applications calling mbedtls_mpi_sub_abs() directly are affected:
630 all calls inside the library were safe since this function is
631 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
632 * Fix an errorneous estimation for an internal buffer in
633 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
634 value the function might fail to write a private RSA keys of the largest
635 supported size.
636 Found by Daniel Otte, reported in #4093 and fixed in #4094.
637 * Fix a stack buffer overflow with mbedtls_net_poll() and
638 mbedtls_net_recv_timeout() when given a file descriptor that is
639 beyond FD_SETSIZE. Reported by FigBug in #4169.
640 * Guard against strong local side channel attack against base64 tables by
641 making access aceess to them use constant flow code.
642
643Bugfix
644 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
645 * Fix memory leak that occured when calling psa_close_key() on a
646 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
647 * Fix an incorrect error code if an RSA private operation glitched.
648 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
649 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
650 is enabled, on platforms where initializing a mutex allocates resources.
651 This was a regression introduced in the previous release. Reported in
652 #4017, #4045 and #4071.
653 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
654 twice is safe. This happens for RSA when some Mbed TLS library functions
655 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
656 enabled on platforms where freeing a mutex twice is not safe.
657 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
658 when MBEDTLS_THREADING_C is enabled on platforms where initializing
659 a mutex allocates resources.
660 * Fixes a bug where, if the library was configured to include support for
661 both the old SE interface and the new PSA driver interface, external keys were
662 not loaded from storage. This was fixed by #3996.
663 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
664 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
665 include this extension in all CA certificates that contain public keys
666 used to validate digital signatures on certificates and MUST mark the
667 extension as critical in such certificates." Previous to this change,
668 the extension was always marked as non-critical. This was fixed by
669 #3698.
670
671Changes
672 * A new library C file psa_crypto_client.c has been created to contain
673 the PSA code needed by a PSA crypto client when the PSA crypto
674 implementation is not included into the library.
675 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
676 now uses the getrandom syscall instead of reading from /dev/urandom.
677
Janos Follath56b38c22020-12-09 01:34:21 +0000678= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +0000679
680API changes
681 * The numerical values of the PSA Crypto API macros have been updated to
682 conform to version 1.0.0 of the specification.
683 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
684 The underlying stream cipher is determined by the key type
685 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
686 * The functions mbedtls_cipher_auth_encrypt() and
687 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
688 as they have no way to check if the output buffer is large enough.
689 Please use mbedtls_cipher_auth_encrypt_ext() and
690 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
691 Cryptofuzz. Fixes #3665.
692
693Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +0000694 * Update the minimum required CMake version to 2.8.12. This silences a
695 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +0000696
697New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +0100698 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000699 Use PSA_ALG_STREAM_CIPHER instead.
700 * The functions mbedtls_cipher_auth_encrypt() and
701 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
702 functions mbedtls_cipher_auth_encrypt_ext() and
703 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
704 these new functions always append the tag to the ciphertext, and include
705 the tag in the ciphertext length.
706
707Features
Janos Follathd6ce1162020-12-09 16:32:01 +0000708 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
709 ciphers, asymmetric signing/verification and key generation, validate_key
710 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +0000711 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000712 * In PSA, allow using a key declared with a base key agreement algorithm
713 in combined key agreement and derivation operations, as long as the key
714 agreement algorithm in use matches the algorithm the key was declared with.
715 This is currently non-standard behaviour, but expected to make it into a
716 future revision of the PSA Crypto standard.
717 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
718 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
719 external CMake projects that include this one to avoid CMake target name
720 clashes. The default value of this variable is "", so default target names
721 are unchanged.
722 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
723 Pascal, improved by Ron Eldor.
724 * In the PSA API, it is no longer necessary to open persistent keys:
725 operations now accept the key identifier. The type psa_key_handle_t is now
726 identical to psa_key_id_t instead of being platform-defined. This bridges
727 the last major gap to compliance with the PSA Cryptography specification
728 version 1.0.0. Opening persistent keys is still supported for backward
729 compatibility, but will be deprecated and later removed in future
730 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000731 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
732 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
733 1.0.0 of the PSA Crypto API specification.
734
735Security
736 * The functions mbedtls_cipher_auth_encrypt() and
737 mbedtls_cipher_auth_decrypt() would write past the minimum documented
738 size of the output buffer when used with NIST_KW. As a result, code using
739 those functions as documented with NIST_KW could have a buffer overwrite
740 of up to 15 bytes, with consequences ranging up to arbitrary code
741 execution depending on the location of the output buffer.
742 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
743 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
744 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
745 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
746 which is how most uses of randomization in asymmetric cryptography
747 (including key generation, intermediate value randomization and blinding)
748 are implemented. This could cause failures or the silent use of non-random
749 values. A random generator can fail if it needs reseeding and cannot not
750 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
751 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
752 * Fix a compliance issue whereby we were not checking the tag on the
753 algorithm parameters (only the size) when comparing the signature in the
754 description part of the cert to the real signature. This meant that a
755 NULL algorithm parameters entry would look identical to an array of REAL
756 (size zero) to the library and thus the certificate would be considered
757 valid. However, if the parameters do not match in *any* way then the
758 certificate should be considered invalid, and indeed OpenSSL marks these
759 certs as invalid when mbedtls did not.
760 Many thanks to guidovranken who found this issue via differential fuzzing
761 and reported it in #3629.
762 * Zeroising of local buffers and variables which are used for calculations
763 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
764 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
765 functions to erase sensitive data from memory. Reported by
766 Johan Malmgren and Johan Uppman Bruce from Sectra.
767
768Bugfix
Paul Elliott40d3fd32021-07-02 11:08:07 +0100769 * Fix an invalid (but non-zero) return code from mbedtls_pk_parse_subpubkey()
Janos Follath76027f62020-12-09 16:28:35 +0000770 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000771 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
772 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
773 * Include the psa_constant_names generated source code in the source tree
774 instead of generating it at build time. Fixes #3524.
775 * Fix rsa_prepare_blinding() to retry when the blinding value is not
776 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
777 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
778 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
779 Fixes #3647.
780 * Use socklen_t on Android and other POSIX-compliant system
781 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
782 Fix #3432.
783 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
784 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
785 psa_cipher_* functions compliant with the PSA Crypto API specification.
786 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
787 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
788 only the curves that support ECDSA, filter the list with
789 mbedtls_ecdsa_can_do().
790 * Fix psa_generate_key() returning an error when asked to generate
791 an ECC key pair on Curve25519 or secp244k1.
792 * Fix psa_key_derivation_output_key() to allow the output of a combined key
793 agreement and subsequent key derivation operation to be used as a key
794 inside of the PSA Crypto core.
795 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
796 chars. Fixes a build failure on platforms where char is unsigned. Fixes
797 #3794.
798 * Fix an off-by-one error in the additional data length check for
799 CCM, which allowed encryption with a non-standard length field.
800 Fixes #3719.
801 * Correct the default IV size for mbedtls_cipher_info_t structures using
802 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
803 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
804 defined. Fix contributed in #3571.
805 * Fix conditions for including string.h in error.c. Fixes #3866.
806 * psa_set_key_id() now also sets the lifetime to persistent for keys located
807 in a secure element.
808 * Attempting to create a volatile key with a non-zero key identifier now
809 fails. Previously the key identifier was just ignored when creating a
810 volatile key.
811 * Attempting to create or register a key with a key identifier in the vendor
812 range now fails.
813 * Fix build failures on GCC 11. Fixes #3782.
814 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
815 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
816 (an error condition) and the second operand was aliased to the result.
817 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
818 could go undetected, resulting in an incorrect result.
819 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
820 Fixes #2927.
821 * In PEM writing functions, fill the trailing part of the buffer with null
822 bytes. This guarantees that the corresponding parsing function can read
823 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
824 until this property was inadvertently broken in Mbed TLS 2.19.0.
825 Fixes #3682.
826 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
827 option on. In this configuration key management methods that are required
828 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
829 Fixes #3818. Reported by John Stroebel.
830
831Changes
832 * Reduce stack usage significantly during sliding window exponentiation.
833 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
834 * The PSA persistent storage format is updated to always store the key bits
835 attribute. No automatic upgrade path is provided. Previously stored keys
836 must be erased, or manually upgraded based on the key storage format
837 specification (docs/architecture/mbed-crypto-storage-specification.md).
838 Fixes #3740.
839 * Remove the zeroization of a pointer variable in AES rounds. It was valid
840 but spurious and misleading since it looked like a mistaken attempt to
841 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
842 Leti, France.
843
Janos Follath6012f0e2020-08-26 15:32:10 +0100844= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100845
846API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100847 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
848 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
849 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100850 Rename associated macros as well:
851 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
852 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
853 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
854 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
855
856Default behavior changes
857 * Stop storing persistent information about externally stored keys created
858 through PSA Crypto with a volatile lifetime. Reported in #3288 and
859 contributed by Steven Cooreman in #3382.
860
861Features
862 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
863 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
864 * Support building on e2k (Elbrus) architecture: correctly enable
865 -Wformat-signedness, and fix the code that causes signed-one-bit-field
866 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
867 <akemi_homura@kurisa.ch>.
868
869Security
870 * Fix a vulnerability in the verification of X.509 certificates when
871 matching the expected common name (the cn argument of
872 mbedtls_x509_crt_verify()) with the actual certificate name: when the
873 subjecAltName extension is present, the expected name was compared to any
874 name in that extension regardless of its type. This means that an
875 attacker could for example impersonate a 4-bytes or 16-byte domain by
876 getting a certificate for the corresponding IPv4 or IPv6 (this would
877 require the attacker to control that IP address, though). Similar attacks
878 using other subjectAltName name types might be possible. Found and
879 reported by kFYatek in #3498.
880 * When checking X.509 CRLs, a certificate was only considered as revoked if
881 its revocationDate was in the past according to the local clock if
882 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
883 certificates were never considered as revoked. On builds with
884 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
885 example, an untrusted OS attacking a secure enclave) could prevent
886 revocation of certificates via CRLs. Fixed by no longer checking the
887 revocationDate field, in accordance with RFC 5280. Reported by
888 yuemonangong in #3340. Reported independently and fixed by
889 Raoul Strackx and Jethro Beekman in #3433.
890 * In (D)TLS record decryption, when using a CBC ciphersuites without the
891 Encrypt-then-Mac extension, use constant code flow memory access patterns
892 to extract and check the MAC. This is an improvement to the existing
893 countermeasure against Lucky 13 attacks. The previous countermeasure was
894 effective against network-based attackers, but less so against local
895 attackers. The new countermeasure defends against local attackers, even
896 if they have access to fine-grained measurements. In particular, this
897 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
898 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
899 (University of Florida) and Dave Tian (Purdue University).
900 * Fix side channel in RSA private key operations and static (finite-field)
901 Diffie-Hellman. An adversary with precise enough timing and memory access
902 information (typically an untrusted operating system attacking a secure
903 enclave) could bypass an existing counter-measure (base blinding) and
904 potentially fully recover the private key.
905 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
906 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
907 for pinpointing the problematic code.
908 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
909 application data from memory. Reported in #689 by
910 Johan Uppman Bruce of Sectra.
911
912Bugfix
913 * Library files installed after a CMake build no longer have execute
914 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100915 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
916 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100917 Reported in #3451 and fix contributed in #3452 by okhowang.
918 * Fix the endianness of Curve25519 keys imported/exported through the PSA
919 APIs. psa_import_key and psa_export_key will now correctly expect/output
920 Montgomery keys in little-endian as defined by RFC7748. Contributed by
921 Steven Cooreman in #3425.
922 * Fix build errors when the only enabled elliptic curves are Montgomery
923 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
924 also fixes missing declarations reported by Steven Cooreman in #1147.
925 * Fix self-test failure when the only enabled short Weierstrass elliptic
926 curve is secp192k1. Fixes #2017.
927 * PSA key import will now correctly import a Curve25519/Curve448 public key
928 instead of erroring out. Contributed by Steven Cooreman in #3492.
929 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
930 lower bits. Fix contributed in #3540.
931 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
932 conditions. Reported and fix suggested by Guido Vranken in #3486.
933 * Fix bug in redirection of unit test outputs on platforms where stdout is
934 defined as a macro. First reported in #2311 and fix contributed in #3528.
935
936Changes
937 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
938 in #3478 and fix contributed in #3479 by okhowang.
939 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
940 previously could lead to stack overflow on constrained devices.
941 Contributed by Doru Gucea and Simon Leet in #3464.
942 * Undefine the ASSERT macro before defining it locally, in case it is defined
943 in a platform header. Contributed by Abdelatif Guettouche in #3557.
944 * Update copyright notices to use Linux Foundation guidance. As a result,
945 the copyright of contributors other than Arm is now acknowledged, and the
946 years of publishing are no longer tracked in the source files. This also
947 eliminates the need for the lines declaring the files to be part of
948 MbedTLS. Fixes #3457.
949 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
950 example applications which allows to provide a password for the key file
951 specified through the existing key_file argument. This allows the use of
952 these applications with password-protected key files. Analogously but for
953 ssl_server2 only, add the command line parameter key_pwd2 which allows to
954 set a password for the key file provided through the existing key_file2
955 argument.
956
Janos Follath13cba682020-06-26 12:40:52 +0100957= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +0100958
959Default behavior changes
960 * In the experimental PSA secure element interface, change the encoding of
961 key lifetimes to encode a persistence level and the location. Although C
962 prototypes do not effectively change, code calling
963 psa_register_se_driver() must be modified to pass the driver's location
964 instead of the keys' lifetime. If the library is upgraded on an existing
965 device, keys created with the old lifetime value will not be readable or
966 removable through Mbed TLS after the upgrade.
967
968Features
969 * New functions in the error module return constant strings for
970 high- and low-level error codes, complementing mbedtls_strerror()
971 which constructs a string for any error code, including compound
972 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
973 in #3176.
974 * The new utility programs/ssl/ssl_context_info prints a human-readable
975 dump of an SSL context saved with mbedtls_ssl_context_save().
976 * Add support for midipix, a POSIX layer for Microsoft Windows.
977 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
978 parsing unsupported certificate extensions via user provided callback.
979 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
980 a solution to #3241.
981 * Pass the "certificate policies" extension to the callback supplied to
982 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
983 policies (#3419).
984 * Added support to entropy_poll for the kern.arandom syscall supported on
985 some BSD systems. Contributed by Nia Alarie in #3423.
986 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
987
988Security
989 * Fix a side channel vulnerability in modular exponentiation that could
990 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
991 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
992 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
993 Strackx (Fortanix) in #3394.
994 * Fix side channel in mbedtls_ecp_check_pub_priv() and
995 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
996 private key that didn't include the uncompressed public key), as well as
997 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
998 f_rng argument. An attacker with access to precise enough timing and
999 memory access information (typically an untrusted operating system
1000 attacking a secure enclave) could fully recover the ECC private key.
1001 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
1002 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
1003 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
1004 macros). This would cause the original Lucky 13 attack to be possible in
1005 those configurations, allowing an active network attacker to recover
1006 plaintext after repeated timing measurements under some conditions.
1007 Reported and fix suggested by Luc Perneel in #3246.
1008
1009Bugfix
1010 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
1011 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
1012 the example programs. Reported in #1430 and fix contributed by irwir.
1013 * Fix undefined behavior in X.509 certificate parsing if the
1014 pathLenConstraint basic constraint value is equal to INT_MAX.
1015 The actual effect with almost every compiler is the intended
1016 behavior, so this is unlikely to be exploitable anywhere. #3192
1017 * Fix issue with a detected HW accelerated record error not being exposed
1018 due to shadowed variable. Contributed by Sander Visser in #3310.
1019 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
1020 NULL pointer argument. Contributed by Sander Visser in #3312.
1021 * Fix potential linker errors on dual world platforms by inlining
1022 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
1023 from psa_crypto.c. Fixes #3300.
1024 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
1025 #2855.
1026 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
1027 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
1028 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
1029 * Remove unused macros from MSVC projects. Reported in #3297 and fix
1030 submitted in #3333 by irwir.
1031 * Add additional bounds checks in ssl_write_client_hello() preventing
1032 output buffer overflow if the configuration declared a buffer that was
1033 too small.
1034 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
1035 fix submitted in #3421 by Nia Alarie.
1036 * Fix building library/net_sockets.c and the ssl_mail_client program on
1037 NetBSD. Contributed by Nia Alarie in #3422.
1038 * Fix false positive uninitialised variable reported by cpp-check.
1039 Contributed by Sander Visser in #3311.
1040 * Update iv and len context pointers manually when reallocating buffers
1041 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
1042 when receiving a connection with CID, when these fields were shifted
1043 in ssl_parse_record_header().
1044
1045Changes
1046 * Fix warnings about signedness issues in format strings. The build is now
1047 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
1048 in #3153.
1049 * Fix minor performance issue in operations on Curve25519 caused by using a
1050 suboptimal modular reduction in one place. Found and fix contributed by
1051 Aurelien Jarno in #3209.
1052 * Combine identical cases in switch statements in md.c. Contributed
1053 by irwir in #3208.
1054 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
1055 by irwir in #3150.
1056 * Unify the example programs termination to call mbedtls_exit() instead of
1057 using a return command. This has been done to enable customization of the
1058 behavior in bare metal environments.
1059 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
1060 Contributed by Koh M. Nakagawa in #3326.
1061 * Use FindPython3 when cmake version >= 3.15.0
1062 * Abort the ClientHello writing function as soon as some extension doesn't
1063 fit into the record buffer. Previously, such extensions were silently
1064 dropped. As a consequence, the TLS handshake now fails when the output
1065 buffer is not large enough to hold the ClientHello.
1066 * The unit tests now rely on header files in tests/include/test and source
1067 files in tests/src. When building with make or cmake, the files in
1068 tests/src are compiled and the resulting object linked into each test
1069 executable.
1070 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
1071 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
1072 coutermeasures. If side channels are not a concern, this dependency can
1073 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
1074 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
1075 Martinho. #3147
1076 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
1077 in #3182 and fix submitted by irwir. #3217
1078 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
1079
Janos Follath876e0252020-04-08 17:15:18 +01001080= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001081
1082New deprecations
1083 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
1084 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001085 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
1086 mbedtls_ssl_get_output_max_frag_len() and
1087 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
1088 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00001089
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001090Security
1091 * Fix issue in DTLS handling of new associations with the same parameters
1092 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
1093 the server could cause it to drop established associations with
1094 legitimate clients, resulting in a Denial of Service. This could only
1095 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
1096 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01001097 * Fix side channel in ECC code that allowed an adversary with access to
1098 precise enough timing and memory access information (typically an
1099 untrusted operating system attacking a secure enclave) to fully recover
1100 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
1101 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02001102 * Fix a potentially remotely exploitable buffer overread in a
1103 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01001104
Janos Follathee856862020-04-08 16:58:36 +01001105Features
1106 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
1107 resizes the I/O buffers before and after handshakes, reducing the memory
1108 consumption during application data transfer.
1109
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001110Bugfix
1111 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
1112 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03001113 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
1114 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01001115 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
1116 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01001117
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001118Changes
1119 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
1120 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04001121 * Split mbedtls_ssl_get_max_frag_len() into
1122 mbedtls_ssl_get_output_max_frag_len() and
1123 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
1124 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1125 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001126
Janos Follath138c2ea2020-02-19 14:32:24 +00001127= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00001128
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001129New deprecations
1130 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
1131 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00001132 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01001133 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
1134 library which allows TLS authentication to use keys stored in a
1135 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00001136
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001137Security
1138 * Fix potential memory overread when performing an ECDSA signature
1139 operation. The overread only happens with cryptographically low
1140 probability (of the order of 2^-n where n is the bitsize of the curve)
1141 unless the RNG is broken, and could result in information disclosure or
1142 denial of service (application crash or extra resource consumption).
1143 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001144 * To avoid a side channel vulnerability when parsing an RSA private key,
1145 read all the CRT parameters from the DER structure rather than
1146 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
1147 Brumley. Reported and fix contributed by Jack Lloyd.
1148 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01001149
1150Features
1151 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
1152 support without SHA-384.
1153
1154API changes
1155 * Change the encoding of key types and curves in the PSA API. The new
1156 values are aligned with the upcoming release of the PSA Crypto API
1157 specification version 1.0.0. The main change which may break some
1158 existing code is that elliptic curve key types no longer encode the
1159 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
1160 a curve family and the key size determines the exact curve (for example,
1161 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
1162
Jaeden Amero62236d72020-01-24 18:20:22 +00001163Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01001164 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01001165 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
1166 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01001167 * Fix some false-positive uninitialized variable warnings in X.509. Fix
1168 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01001169 * Fix a possible error code mangling in psa_mac_verify_finish() when
1170 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00001171 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
1172 RSA keys that would later be rejected by functions expecting private
1173 keys. Found by Catena cyber using oss-fuzz (issue 20467).
1174 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
1175 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00001176
Jaeden Amerod56a2af2020-01-15 18:07:20 +00001177= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03001178
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001179Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001180 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001181 entropy function to obtain entropy for a nonce if the entropy size is less
1182 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001183 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001184 nonce length to 0.
1185
1186Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001187 * Enforce that mbedtls_entropy_func() gathers a total of
1188 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001189 default configuration, on a platform with a single entropy source, the
1190 entropy module formerly only grabbed 32 bytes, which is good enough for
1191 security if the source is genuinely strong, but less than the expected 64
1192 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01001193 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
1194 mbedtls_internal_aes_decrypt() before exiting the function. The value of
1195 these variables can be used to recover the last round key. To follow best
1196 practice and to limit the impact of buffer overread vulnerabilities (like
1197 Heartbleed) we need to zeroize them before exiting the function.
1198 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
1199 Grant Hernandez, and Kevin Butler (University of Florida) and
1200 Dave Tian (Purdue University).
1201 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
1202 constant time/constant trace, so side channel attacks can retrieve the
1203 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
1204 to have only large prime factors), and then, by brute force, recover the
1205 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
1206 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
1207 timings on the comparison in the key generation enabled the attacker to
1208 learn leading bits of the ephemeral key used during ECDSA signatures and to
1209 recover the private key. Reported by Jeremy Dubeuf.
1210 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
1211 failures could happen with alternative implementations of AES. Bug
1212 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
1213 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001214
1215Features
1216 * Key derivation inputs in the PSA API can now either come from a key object
1217 or from a buffer regardless of the step type.
1218 * The CTR_DRBG module can grab a nonce from the entropy source during the
1219 initial seeding. The default nonce length is chosen based on the key size
1220 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001221 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001222 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001223 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001224
1225API changes
1226 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
1227 key derivation function, use a buffer instead (this is now always
1228 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001229 * Rename psa_asymmetric_sign() to psa_sign_hash() and
1230 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001231
irwir6c0da642019-09-26 21:07:41 +03001232Bugfix
1233 * Fix an incorrect size in a debugging message. Reported and fix
1234 submitted by irwir. Fixes #2717.
1235 * Fix an unused variable warning when compiling without DTLS.
1236 Reported and fix submitted by irwir. Fixes #2800.
1237 * Remove a useless assignment. Reported and fix submitted by irwir.
1238 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001239 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01001240 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001241 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001242 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001243 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001244 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001245 * mbedtls_ctr_drbg_set_entropy_len() and
1246 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
1247 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001248
1249Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001250 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001251 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001252 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001253 before).
1254 * Variables containing error codes are now initialized to an error code
1255 rather than success, so that coding mistakes or memory corruption tends to
1256 cause functions to return this error code rather than a success. There are
1257 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01001258 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001259 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001260 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01001261 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01001262 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01001263 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01001264 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03001265
Jaeden Amero914a5072019-09-18 13:35:57 +01001266= mbed TLS 2.19.1 branch released 2019-09-16
1267
1268Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06001269 * Declare include headers as PUBLIC to propagate to CMake project consumers
1270 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01001271 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
1272 TLS sessions with tools like Wireshark.
1273
1274API Changes
1275 * Make client_random and server_random const in
1276 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
1277 from modifying the client/server hello.
1278
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001279Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01001280 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02001281 contributed by apple-ihack-geek in #2663.
1282
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001283= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001284
Gilles Peskine52157832018-08-11 00:51:04 +02001285Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001286 * Fix a missing error detection in ECJPAKE. This could have caused a
1287 predictable shared secret if a hardware accelerator failed and the other
1288 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02001289 * When writing a private EC key, use a constant size for the private
1290 value, as specified in RFC 5915. Previously, the value was written
1291 as an ASN.1 INTEGER, which caused the size of the key to leak
1292 about 1 bit of information on average and could cause the value to be
1293 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00001294 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
1295 implement blinding. Because of this for the same key and message the same
1296 blinding value was generated. This reduced the effectiveness of the
1297 countermeasure and leaked information about the private key through side
1298 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02001299
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001300Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001301 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02001302 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02001303 store it in non-volatile storage, and later using it for TLS session
1304 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03001305 * Add a new API function mbedtls_ssl_check_record() to allow checking that
1306 an incoming record is valid, authentic and has not been seen before. This
1307 feature can be used alongside Connection ID and SSL context serialisation.
1308 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
1309 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001310 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
1311 (https://project-everest.github.io/). It can be enabled at compile time
1312 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
1313 verified and significantly faster, but is only supported on x86 platforms
1314 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
1315 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01001316 * Add mbedtls_net_close(), enabling the building of forking servers where
1317 the parent process closes the client socket and continue accepting, and
1318 the child process closes the listening socket and handles the client
1319 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00001320
Gilles Peskine60b29d62019-08-14 18:37:59 +02001321API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02001322 * Add DER-encoded test CRTs to library/certs.c, allowing
1323 the example programs ssl_server2 and ssl_client2 to be run
1324 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
1325 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01001326 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
1327 list all curves for which at least one of ECDH or ECDSA is supported, not
1328 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
1329 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
1330 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01001331 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
1332 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
1333 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00001334
1335New deprecations
1336 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
1337 RNG function as an input.
1338 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
1339 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02001340
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001341Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01001342 * Fix missing bounds checks in X.509 parsing functions that could
1343 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
1344 * Fix multiple X.509 functions previously returning ASN.1 low-level error
1345 codes to always wrap these codes into X.509 high level error codes before
1346 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01001347 * Fix to allow building test suites with any warning that detects unused
1348 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01001349 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01001350 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01001351 * Fix build failure when building with mingw on Windows by including
1352 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01001353 * Fix Visual Studio Release x64 build configuration by inheriting
1354 PlatformToolset from the project configuration. Fixes #1430 reported by
1355 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01001356 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
1357 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02001358 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01001359 * Avoid use of statically sized stack buffers for certificate writing.
1360 This previously limited the maximum size of DER encoded certificates
1361 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04001362 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02001363 * Update test certificates that were about to expire. Reported by
1364 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02001365 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
1366 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
1367 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01001368 * Fix propagation of restart contexts in restartable EC operations.
1369 This could previously lead to segmentation faults in builds using an
1370 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01001371 * Fix memory leak in in mpi_miller_rabin(). Contributed by
1372 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06001373 * Improve code clarity in x509_crt module, removing false-positive
1374 uninitialized variable warnings on some recent toolchains (GCC8, etc).
1375 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01001376 * Fix bug in endianness conversion in bignum module. This lead to
1377 functionally incorrect code on bigendian systems which don't have
1378 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01001379
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001380Changes
Hanno Becker136512b2019-05-30 11:16:02 +01001381 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02001382 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
1383 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01001384 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06001385 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
1386 docker-env.sh) to simplify running test suites on a Linux host. Contributed
1387 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01001388 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
1389 test runs without variability. Contributed by Philippe Antoine (Catena
1390 cyber) in #2681.
1391 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02001392 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
1393 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01001394 * Remove the crypto part of the library from Mbed TLS. The crypto
1395 code and tests are now only available via Mbed Crypto, which
1396 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00001397
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001398= mbed TLS 2.18.1 branch released 2019-07-12
1399
Jaeden Ameroded319d2019-05-30 13:18:24 +01001400Bugfix
1401 * Fix build failure when building with mingw on Windows by including
1402 stdarg.h where needed. Fixes #2656.
1403
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01001404Changes
1405 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
1406 Ashley Duncan in #2609.
1407
Jaeden Amerob1c72f52019-06-11 17:18:09 +01001408= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001409
Hanno Beckerac4172c2019-01-31 09:27:04 +00001410Features
1411 * Add the Any Policy certificate policy oid, as defined in
1412 rfc 5280 section 4.2.1.4.
1413 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
1414 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00001415 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
1416 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00001417 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00001418 Contributed by Jack Lloyd and Fortanix Inc.
1419 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001420 and the used tls-prf.
1421 * Add public API for tls-prf function, according to requested enum.
1422 * Add support for parsing otherName entries in the Subject Alternative Name
1423 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00001424 as defined in RFC 4108 section 5.
1425 * Add support for parsing certificate policies extension, as defined in
1426 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
1427 supported.
1428 * List all SAN types in the subject_alt_names field of the certificate.
1429 Resolves #459.
1430 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00001431 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
1432 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00001433 lifetime of the underlying transport by adding a connection identifier
1434 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001435 incoming record with the correct connection data even after the peer has
1436 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00001437 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
1438 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
1439
Paul Bakker5121ce52009-01-03 21:22:43 +00001440
Jaeden Amero4e0db562019-08-27 11:18:28 +01001441API Changes
1442 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
1443 and the used tls-prf.
1444 * Add public API for tls-prf function, according to requested enum.
1445
Paul Bakker5121ce52009-01-03 21:22:43 +00001446Bugfix
1447 * Fix private key DER output in the key_app_writer example. File contents
1448 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
1449 Christian Walther in #2239.
1450 * Fix potential memory leak in X.509 self test. Found and fixed by
1451 Junhwan Park, #2106.
1452 * Reduce stack usage of hkdf tests. Fixes #2195.
1453 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
1454 used with negative inputs. Found by Guido Vranken in #2404. Credit to
1455 OSS-Fuzz.
1456 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
1457 either used both encrypt and decrypt key schedules, or which perform padding.
1458 GCM and CCM were not affected. Fixed by Jack Lloyd.
1459 * Fix incorrect default port number in ssl_mail_client example's usage.
1460 Found and fixed by irwir. #2337
1461 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
1462 Fixed by Peter Kolbus (Garmin). #2579
1463 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00001464 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
1465 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001466 for the parameter.
1467 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00001468 sni entry parameter. Reported by inestlerode in #560.
1469 * Set the next sequence of the subject_alt_name to NULL when deleting
1470 sequence on failure. Found and fix suggested by Philippe Antoine.
1471 Credit to OSS-Fuzz.
1472
Paul Bakker5121ce52009-01-03 21:22:43 +00001473Changes
1474 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
1475 mbedTLS configuration only SHA-2 signed certificates are accepted.
1476 This certificate is used in the demo server programs, which lead the
1477 client programs to fail at the peer's certificate verification
1478 due to an unacceptable hash signature. The certificate has been
1479 updated to one that is SHA-256 signed. Fix contributed by
1480 Illya Gerasymchuk.
1481 * Return from various debugging routines immediately if the
1482 provided SSL context is unset.
1483 * Remove dead code from bignum.c in the default configuration.
1484 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
1485 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
1486 Contributed by Peter Kolbus (Garmin).
1487 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
1488 improve clarity. Fixes #2258.
1489
1490= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00001491
1492Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001493 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
1494 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001495 at the cost of additional lifetime constraints on the input
1496 buffer, but at the benefit of reduced RAM consumption.
1497 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
1498 named bitstring in DER as required by RFC 5280 Appendix B.
1499 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
1500 from the default list (enabled by default). See
1501 https://sweet32.info/SWEET32_CCS16.pdf.
1502
1503API Changes
1504 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001505 See the Features section for more information.
1506 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
1507 for the benefit of saving RAM, by disabling the new compile-time
1508 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
1509 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
1510 always return NULL, and removes the peer_cert field from the
1511 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01001512 certificate.
1513
1514Security
1515 * Make mbedtls_ecdh_get_params return an error if the second key
1516 belongs to a different group from the first. Before, if an application
1517 passed keys that belonged to different group, the first key's data was
1518 interpreted according to the second group, which could lead to either
1519 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001520 latter case, this could expose at most 5 bits of the private key.
1521
1522Bugfix
1523 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
1524 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
1525 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
1526 Raised as a comment in #1996.
1527 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
1528 previously lead to a stack overflow on constrained targets.
1529 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
1530 in the header files, which missed the precompilation check. #971
1531 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
1532 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00001533 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
1534 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02001535 * Fix signed-to-unsigned integer conversion warning
1536 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06001537 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
1538 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01001539 * Fix false failure in all.sh when backup files exist in include/mbedtls
1540 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
1541 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
1542 mbedtls_asn1_write_bitstring().
1543 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
1544 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00001545 correctly as trailing zeroes were not accounted for as unused bits in the
1546 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00001547
1548Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001549 * Reduce RAM consumption during session renegotiation by not storing
1550 the peer CRT chain and session ticket twice.
1551 * Include configuration file in all header files that use configuration,
1552 instead of relying on other header files that they include.
1553 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001554 * Add support for alternative CSR headers, as used by Microsoft and defined
1555 in RFC 7468. Found by Michael Ernst. Fixes #767.
1556 * Correct many misspellings. Fixed by MisterDA #2371.
1557 * Provide an abstraction of vsnprintf to allow alternative implementations
1558 for platforms that don't provide it. Based on contributions by Joris Aerts
1559 and Nathaniel Wesley Filardo.
1560 * Fix clobber list in MIPS assembly for large integer multiplication.
1561 Previously, this could lead to functionally incorrect assembly being
1562 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01001563 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
1564 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01001565 * Reduce the complexity of the timing tests. They were assuming more than the
1566 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01001567 * Fix configuration queries in ssl-opt.h. #2030
1568 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00001569 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
1570 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001571 * Ciphersuites based on 3DES now have the lowest priority by default when
1572 they are enabled.
1573
1574= mbed TLS 2.16.0 branch released 2018-12-21
1575
1576Features
1577 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
1578 of parameters in the API. This allows detection of obvious misuses of the
1579 API, such as passing NULL pointers. The API of existing functions hasn't
1580 changed, but requirements on parameters have been made more explicit in
1581 the documentation. See the corresponding API documentation for each
1582 function to see for which parameter values it is defined. This feature is
1583 disabled by default. See its API documentation in config.h for additional
1584 steps you have to take when enabling it.
1585
1586API Changes
1587 * The following functions in the random generator modules have been
1588 deprecated and replaced as shown below. The new functions change
1589 the return type from void to int to allow returning error codes when
1590 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
1591 primitive. Fixes #1798.
1592 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
1593 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
1594 * Extend ECDH interface to enable alternative implementations.
1595 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
1596 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
1597 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
1598 * Additional parameter validation checks have been added for the following
1599 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
1600 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
1601 Where modules have had parameter validation added, existing parameter
1602 checks may have changed. Some modules, such as Chacha20 had existing
1603 parameter validation whereas other modules had little. This has now been
1604 changed so that the same level of validation is present in all modules, and
1605 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
1606 is off. That means that checks which were previously present by default
1607 will no longer be.
1608
1609New deprecations
1610 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
1611 in favor of functions that can return an error code.
1612
1613Bugfix
1614 * Fix for Clang, which was reporting a warning for the bignum.c inline
1615 assembly for AMD64 targets creating string literals greater than those
1616 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
1617 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
1618 through qemu user emulation. Reported and fix suggested by randombit
1619 in #1212. Fixes #1212.
1620 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
1621 This could lead to a buffer overflow, but only in case ticket authentication
1622 was broken. Reported and fix suggested by Guido Vranken in #659.
1623 * Add explicit integer to enumeration type casts to example program
1624 programs/pkey/gen_key which previously led to compilation failure
1625 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
1626 * Fix double initialization of ECC hardware that made some accelerators
1627 hang.
1628 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001629 of check for certificate/key matching. Reported by Attila Molnar, #507.
1630
1631 = mbed TLS 2.15.1 branch released 2018-11-30
1632
1633 Changes
1634 * Update the Mbed Crypto submodule to version 0.1.0b2.
1635
1636 = mbed TLS 2.15.0 branch released 2018-11-23
1637
1638 Features
1639 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
1640 Mbed Crypto as the source of the cryptography implementation.
1641 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
1642 the PSA Crypto API from Mbed Crypto when additionally used with the
1643 USE_CRYPTO_SUBMODULE build option.
1644
1645 Changes
1646 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001647 from the cipher abstraction layer. Fixes #2198.
1648
1649= mbed TLS 2.14.1 branch released 2018-11-30
1650
1651Security
1652 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
1653 decryption that could lead to a Bleichenbacher-style padding oracle
1654 attack. In TLS, this affects servers that accept ciphersuites based on
1655 RSA decryption (i.e. ciphersuites whose name contains RSA but not
1656 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
1657 (University of Adelaide), Daniel Genkin (University of Michigan),
1658 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
1659 (University of Adelaide, Data61). The attack is described in more detail
1660 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
1661 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
1662 via branching and memory access patterns. An attacker who could submit
1663 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
1664 of the decryption and not its result could nonetheless decrypt RSA
1665 plaintexts and forge RSA signatures. Other asymmetric algorithms may
1666 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
1667 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
1668 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
1669 modules.
1670
1671API Changes
1672 * The new functions mbedtls_ctr_drbg_update_ret() and
1673 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
1674 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001675 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001676 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001677
Hanno Beckerd3445da2018-11-02 09:36:45 +00001678= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001679
Simon Butcherb35e59d2018-11-19 15:49:26 +00001680Security
Simon Butcher681edee2018-11-07 16:25:38 +00001681 * Fix overly strict DN comparison when looking for CRLs belonging to a
1682 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1683 name and the CA's subject name differed in their string encoding (e.g.,
1684 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001685 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001686 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001687 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001688 incoming message buffer was placed within the first 64KiB of address
1689 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001690 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1691 potentially leading to an application crash or information disclosure.
1692 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1693 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001694 adversary to construct non-primes that would be erroneously accepted as
1695 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001696 security of TLS, but can matter in other contexts with numbers chosen
1697 potentially by an adversary that should be prime and can be validated.
1698 For example, the number of rounds was enough to securely generate RSA key
1699 pairs or Diffie-Hellman parameters, but was insufficient to validate
1700 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001701 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001702 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001703
Simon Butcherb35e59d2018-11-19 15:49:26 +00001704Features
1705 * Add support for temporarily suspending expensive ECC computations after
1706 some configurable amount of operations. This is intended to be used in
1707 constrained, single-threaded systems where ECC is time consuming and can
1708 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001709 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1710 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1711 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1712 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001713 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1714 including client authentication).
1715 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1716 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001717 MPI multiplications used in ECC and RSA cryptography. Contributed by
1718 Aurelien Jarno.
1719 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1720 signature always used a salt with the same length as the hash, and returned
1721 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001722 shorter. This allows the library to support all hash and signature sizes
1723 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001724 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001725 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001726
1727API Changes
1728 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1729 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001730 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001731 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001732
1733New deprecations
1734 * All module specific errors following the form
1735 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001736 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001737 platform error.
1738 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001739 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1740 by the equivalent plaform error.
1741 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001742 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001743 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001744
1745Bugfix
1746 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1747 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001748 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1749 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001750 * Fix a bug in the update function for SSL ticket keys which previously
1751 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001752 * Fix failure in hmac_drbg in the benchmark sample application, when
1753 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1754 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001755 which lead to accepting properly authenticated but improperly
1756 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001757 * Fix memory leak and freeing without initialization in the example
1758 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001759 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1760 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1761 * Zeroize memory used for buffering or reassembling handshake messages
1762 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001763 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1764 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1765 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001766 UTF8String. Previously, the use of the PrintableString format led to
1767 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001768 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1769 Thomas-Dee.
1770 * Fix compilation failure for configurations which use compile time
1771 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001772 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1773 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001774
Simon Butcherc86993e2018-09-27 09:48:54 +01001775Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001776 * Removed support for Yotta as a build tool.
1777 * Add tests for session resumption in DTLS.
1778 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001779 test the handling of large packets and small packets on the client side
1780 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001781 * Change the dtls_client and dtls_server samples to work by default over
1782 IPv6 and optionally by a build option over IPv4.
1783 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001784 calls, rather than Win32 API calls directly. This is necessary to avoid
1785 conflict with C runtime usage. Found and fixed by irwir.
1786 * Remember the string format of X.509 DN attributes when replicating
1787 X.509 DNs. Previously, DN attributes were always written in their default
1788 string format (mostly PrintableString), which could lead to CRTs being
1789 created which used PrintableStrings in the issuer field even though the
1790 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1791 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001792 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1793 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001794 * Improve documentation of mbedtls_ssl_get_verify_result().
1795 Fixes #517 reported by github-monoculture.
1796 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001797 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001798 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001799
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001800= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001801
Hanno Becker921b76d2018-09-05 16:21:36 +01001802API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001803 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001804 whose implementation should behave as a thread-safe version of gmtime().
1805 This allows users to configure such an implementation at compile time when
1806 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001807 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001808 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001809
1810Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001811 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001812 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001813
k-stachowiak21feae52018-07-09 14:42:35 +02001814= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001815
1816Security
1817 * Fix an issue in the X.509 module which could lead to a buffer overread
1818 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001819 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001820 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001821
1822Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001823 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001824 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001825 with the peer, as well as by a new per-connection MTU option, set using
1826 mbedtls_ssl_set_mtu().
1827 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001828 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1829 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001830 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001831 enabled by default.
1832 * Add support for buffering out-of-order handshake messages in DTLS.
1833 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001834 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1835 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001836
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001837API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001838 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001839 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001840
1841Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001842 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1843 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001844 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1845 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001846 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001847 Fix contributed by Espressif Systems.
1848 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001849 This improves compliance to RFC 4492, and as a result, solves
1850 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001851 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001852 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001853 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1854 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1855 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1856 with TLS versions 1.1 and earlier when the server requested authentication
1857 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001858 check in parsing the CertificateRequest message,
1859 introduced in Mbed TLS 2.12.0. Fixes #1954.
1860 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001861 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1862 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001863 * Fix undefined shifts with negative values in certificates parsing
1864 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001865 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001866 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001867 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1868
1869Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001870 * Copy headers preserving timestamps when doing a "make install".
1871 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001872 * Allow the forward declaration of public structs. Contributed by Dawid
1873 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001874 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001875 CCM test vectors from RAM.
1876 * Add support for buffering of out-of-order handshake messages.
1877 * Add warnings to the documentation of the HKDF module to reduce the risk
1878 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001879 functions. Fixes #1775. Reported by Brian J. Murray.
1880
Gilles Peskine104d8582018-06-27 10:57:33 +02001881= mbed TLS 2.12.0 branch released 2018-07-25
1882
1883Security
1884 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1885 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1886 partially recover the plaintext of messages under some conditions by
1887 exploiting timing measurements. With DTLS, the attacker could perform
1888 this recovery by sending many messages in the same connection. With TLS
1889 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1890 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1891 sent over connections manipulated by the attacker. Connections using GCM
1892 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1893 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1894 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001895 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1896 Shamir.
1897 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001898 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001899 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001900 plaintext of messages under some conditions by using a cache attack
1901 targeting an internal MD/SHA buffer. With TLS or if
1902 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1903 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1904 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001905 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1906 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1907 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1908 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1909 execute code on the local machine as well as manipulate network packets,
1910 to partially recover the plaintext of messages under some conditions (see
1911 previous entry) by using a cache attack targeting the SSL input record
1912 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001913 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001914 Eyal Ronen and Adi Shamir.
1915
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001916Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001917 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001918 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001919 by Daniel King.
1920 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01001921 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
1922 Contributed by Augustin Cavalier.
1923 * Make the receive and transmit buffers independent sizes, for situations
1924 where the outgoing buffer can be fixed at a smaller size than the incoming
1925 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03001926 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001927 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001928 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01001929 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
1930
1931Bugfix
niisatob7d39db2018-06-25 20:44:57 +09001932 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09001933 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01001934 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001935 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01001936 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
1937 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01001938 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
1939 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01001940 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
1941 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03001942 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
1943 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001944 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
1945 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01001946 * Added length checks to some TLS parsing functions. Found and fixed by
1947 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03001948 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03001949 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01001950 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
1951 the `#include` in the header files. Resolves #857
1952 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01001953 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
1954 Drozd. #1098
1955 * Fix decryption for zero length messages (which contain all padding) when a
1956 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
1957 such a message was wrongly reported as an invalid record and therefore lead
1958 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01001959 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
1960 contributed by Espressif Systems. Fixes #1632
1961 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001962 when the request_size argument is set to 0 as stated in the documentation.
1963 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01001964 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01001965 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001966 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001967
1968Changes
1969 * Fail when receiving a TLS alert message with an invalid length, or invalid
1970 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
1971 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001972 when calling with a NULL salt and non-zero salt_len. Contributed by
1973 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00001974 * Change the shebang line in Perl scripts to look up perl in the PATH.
1975 Contributed by fbrosson.
1976 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001977 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001978 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
1979
1980= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01001981
1982Features
1983 * Add additional block mode, OFB (Output Feedback), to the AES module and
1984 cipher abstraction module.
1985 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01001986 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
1987 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02001988 * Add support for the XTS block cipher mode with AES (AES-XTS).
1989 Contributed by Aorimn in pull request #414.
1990 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01001991 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01001992 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01001993
1994Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01001995 * Fix the cert_write example to handle certificates signed with elliptic
1996 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01001997 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
1998 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01001999 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01002000 Reported by rahmanih in #683
2001 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
2002
Simon Butcherb6a5bff2018-06-18 11:51:36 +01002003Changes
2004 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
2005 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02002006 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01002007 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002008
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01002009= mbed TLS 2.10.0 branch released 2018-06-06
2010
2011Features
2012 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02002013 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00002014
2015API Changes
2016 * Extend the platform module with a util component that contains
2017 functionality shared by multiple Mbed TLS modules. At this stage
2018 platform_util.h (and its associated platform_util.c) only contain
2019 mbedtls_platform_zeroize(), which is a critical function from a security
2020 point of view. mbedtls_platform_zeroize() needs to be regularly tested
2021 against compilers to ensure that calls to it are not removed from the
2022 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01002023 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01002024 facilitate testing and maintenance.
2025
2026Bugfix
2027 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002028 build to fail. Found by zv-io. Fixes #1651.
2029
Moran Pekera64fba42018-02-25 13:29:03 +02002030Changes
2031 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01002032 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01002033 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02002034
Simon Butcherf85c90a2017-07-27 15:11:52 +01002035= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01002036
2037Security
2038 * Fix an issue in the X.509 module which could lead to a buffer overread
2039 during certificate validation. Additionally, the issue could also lead to
2040 unnecessary callback checks being made or to some validation checks to be
2041 omitted. The overread could be triggered remotely, while the other issues
2042 would require a non DER-compliant certificate to be correctly signed by a
2043 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
2044 luocm. Fixes #825.
2045 * Fix the buffer length assertion in the ssl_parse_certificate_request()
2046 function which led to an arbitrary overread of the message buffer. The
2047 overreads could be caused by receiving a malformed message at the point
2048 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04002049 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01002050 data is output with the debug data.
2051 * Fix a client-side bug in the validation of the server's ciphersuite choice
2052 which could potentially lead to the client accepting a ciphersuite it didn't
2053 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002054 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01002055 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01002056
2057Features
2058 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01002059 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
2060 Suggested and contributed by jkivilin in pull request #394.
2061 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002062 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01002063 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
2064 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01002065
2066API Changes
2067 * Extend the public API with the function of mbedtls_net_poll() to allow user
2068 applications to wait for a network context to become ready before reading
2069 or writing.
2070 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02002071 a check for whether more more data is pending to be processed in the
2072 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01002073 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00002074 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01002075
Gilles Peskine08185402018-03-22 21:50:48 +01002076Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01002077 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
2078 contributed by Brian J Murray and David Brown.
2079 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01002080 in configurations that omit certain hashes or public-key algorithms.
2081 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02002082 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01002083 #1353
2084 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
2085 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
2086 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08002087 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01002088 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07002089 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01002090 unable to parse keys which had only the optional parameters field of the
2091 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
2092 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02002093 stated in the mbedtls_cipher_update() documentation. Contributed by
2094 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01002095 * Fix overriding and ignoring return values when parsing and writing to
2096 a file in pk_sign program. Found by kevlut in #1142.
2097 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
2098 where data needs to be fetched from the underlying transport in order
2099 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01002100 returned when unexpected messages were being discarded, ignoring that
2101 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02002102 in the internal buffers; these cases led to deadlocks when event-driven
2103 I/O was used. Found and reported by Hubert Mis in #772.
2104 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04002105 function which leads to a potential one byte overread of the message
2106 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01002107 * Fix invalid buffer sizes passed to zlib during record compression and
2108 decompression.
2109 * Fix the soversion of libmbedcrypto to match the soversion of the
2110 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01002111 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002112 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
2113
Simon Butcherb03120a2018-04-30 16:40:25 +01002114Changes
2115 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01002116 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
2117 independently by Matthieu Volat and Arne Schwabe.
2118 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00002119 public-key algorithms. Includes contributions by Gert van Dijk.
2120 * Improve negative testing of X.509 parsing.
2121 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01002122 configurations where the feature is disabled. Found and fixed by Gergely
2123 Budai.
2124 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
2125 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01002126 instead incorrectly manipulates the configuration structure directly.
2127 Found and fix submitted by junyeonLEE in #1220.
2128 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02002129 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
2130 without PBES2. Fixed by Marcos Del Sol Vives.
2131 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01002132 for Curve25519 (other curves had it already). Contributed by Nicholas
2133 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01002134 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
2135 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01002136 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002137 Paul Sokolovsky in #1356.
2138 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01002139 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01002140 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01002141 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02002142 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02002143 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
2144 by Alexey Skalozub in #405.
2145 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02002146 transmitting more than the required length, return an error. Raised by
2147 Sam O'Connor in #1245.
2148 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01002149 HMAC functions with non-HMAC ciphersuites. Independently contributed
2150 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02002151 * Improve security of RSA key generation by including criteria from
2152 FIPS 186-4. Contributed by Jethro Beekman. #1380
2153 * Declare functions in header files even when an alternative implementation
2154 of the corresponding module is activated by defining the corresponding
2155 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04002156 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01002157 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00002158 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01002159
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002160= mbed TLS 2.8.0 branch released 2018-03-16
2161
2162Default behavior changes
2163 * The truncated HMAC extension now conforms to RFC 6066. This means
2164 that when both sides of a TLS connection negotiate the truncated
2165 HMAC extension, Mbed TLS can now interoperate with other
2166 compliant implementations, but this breaks interoperability with
2167 prior versions of Mbed TLS. To restore the old behavior, enable
2168 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
2169 config.h. Found by Andreas Walz (ivESK, Offenburg University of
Hanno Becker7dc832b2017-11-16 17:39:34 +00002170 Applied Sciences).
Gilles Peskine04f9bd02018-02-22 15:22:44 +01002171
2172Security
2173 * Fix implementation of the truncated HMAC extension. The previous
2174 implementation allowed an offline 2^80 brute force attack on the
Gilles Peskine553a06f2018-03-13 17:15:34 +01002175 HMAC key of a single, uninterrupted connection (with no
2176 resumption of the session).
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002177 * Verify results of RSA private key operations to defend
2178 against Bellcore glitch attack.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002179 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
2180 a crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01002181 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
2182 crash on invalid input.
Hanno Becker7dc832b2017-11-16 17:39:34 +00002183 * Fix CRL parsing to reject CRLs containing unsupported critical
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002184 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
2185
2186Features
Gilles Peskine1d80a672018-02-14 11:33:30 +01002187 * Extend PKCS#8 interface by introducing support for the entire SHA
2188 algorithms family when encrypting private keys using PKCS#5 v2.0.
2189 This allows reading encrypted PEM files produced by software that
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01002190 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
Antonio Quartulli12ccef22017-12-20 07:03:55 +08002191 OpenVPN Inc. Fixes #1339
Hanno Beckercf092b22018-03-06 14:23:38 +00002192 * Add support for public keys encoded in PKCS#1 format. #1122
2193
2194New deprecations
2195 * Deprecate support for record compression (configuration option
Gilles Peskine27b07542018-02-14 14:07:48 +01002196 MBEDTLS_ZLIB_SUPPORT).
2197
2198Bugfix
Gilles Peskine1e3fd692018-02-14 15:12:49 +01002199 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Ron Eldor099e61d2018-02-06 17:34:27 +02002200 Fixes #1358.
2201 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Gilles Peskine1bf61232018-02-27 08:37:52 +01002202 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
2203 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00002204 In the context of SSL, this resulted in handshake failure. Reported by
Gilles Peskineb4c571e2018-03-11 00:44:14 +01002205 daniel in the Mbed TLS forum. #1351
2206 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
2207 * Fix setting version TLSv1 as minimal version, even if TLS 1
2208 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
Ron Eldor2f73c932017-09-26 15:06:56 +03002209 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
2210 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldorbc18eb32017-09-06 17:49:10 +03002211 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
Gilles Peskine08af5382018-03-11 00:15:56 +01002212 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
itayzafrir693a1d92018-02-26 12:02:10 +02002213 Nick Wilson on issue #355
Gilles Peskinea31d8202018-03-12 23:45:08 +01002214 * In test_suite_pk, pass valid parameters when testing for hash length
2215 overflow. #1179
Gilles Peskine3ff4a072018-03-12 23:54:20 +01002216 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
Gilles Peskine5f193282018-03-13 17:18:06 +01002217 by Guido Vranken. #639
2218 * Log correct number of ciphersuites used in Client Hello message. #918
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01002219 * Fix X509 CRT parsing that would potentially accept an invalid tag when
2220 parsing the subject alternative names.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01002221 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
2222 that could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01002223 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
2224 could cause a key exchange to fail on valid data.
Sanne Woudacf793122017-09-07 16:33:44 +01002225 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
2226 MBEDTLS_DEPRECATED_REMOVED. #1388
Gilles Peskine27b07542018-02-14 14:07:48 +01002227 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
2228 Found through fuzz testing.
2229
2230Changes
Gilles Peskine5daa7652018-02-14 14:10:24 +01002231 * Fix tag lengths and value ranges in the documentation of CCM encryption.
Gilles Peskinedf298682018-02-14 15:49:54 +01002232 Contributed by Mathieu Briand.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01002233 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
2234 * Remove support for the library reference configuration for picocoin.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02002235 * MD functions deprecated in 2.7.0 are no longer inline, to provide
Gilles Peskine6dc4a312018-03-13 00:13:06 +01002236 a migration path for those depending on the library's ABI.
2237 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine27b07542018-02-14 14:07:48 +01002238 * Use (void) when defining functions with no parameters. Contributed by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002239 Joris Aerts. #678
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002240
Gilles Peskine28a0c722017-10-17 19:01:38 +02002241= mbed TLS 2.7.0 branch released 2018-02-03
Simon Butcher55fc4e02018-02-05 01:09:13 +00002242
2243Security
2244 * Fix a heap corruption issue in the implementation of the truncated HMAC
2245 extension. When the truncated HMAC extension is enabled and CBC is used,
2246 sending a malicious application packet could be used to selectively corrupt
2247 6 bytes on the peer's heap, which could potentially lead to crash or remote
2248 code execution. The issue could be triggered remotely from either side in
2249 both TLS and DTLS. CVE-2018-0488
2250 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
2251 for the key size, which could potentially lead to crash or remote code
2252 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
2253 Qualcomm Technologies Inc. CVE-2018-0487
2254 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
2255 zeros.
2256 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
Hanno Becker930025d2017-09-18 16:07:19 +01002257 64 KiB to the address of the SSL buffer and causing a wrap around.
2258 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
2259 default enabled) maximum fragment length extension is disabled in the
2260 config and the application data buffer passed to mbedtls_ssl_write
2261 is larger than the internal message buffer (16384 bytes by default), the
2262 latter overflows. The exploitability of this issue depends on whether the
Simon Butcher55fc4e02018-02-05 01:09:13 +00002263 application layer can be forced into sending such large packets. The issue
2264 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
2265 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
2266 Fixes #707.
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01002267 * Add a provision to prevent compiler optimizations breaking the time
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01002268 constancy of mbedtls_ssl_safer_memcmp().
Ron Eldor31162e42017-09-05 15:34:35 +03002269 * Ensure that buffers are cleared after use if they contain sensitive data.
2270 Changes were introduced in multiple places in the library.
Janos Follathb174c842017-09-20 16:26:04 +01002271 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
2272 being leaked to memory after release.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002273 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
2274 leaking 1 bit of the private key. Reported by prashantkspatil.
2275 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
2276 data. Previously, trailing zero bytes were detected and omitted for the
Hanno Becker509fef72017-10-19 10:10:18 +01002277 sake of saving memory, but potentially leading to slight timing
2278 differences. Reported by Marco Macchetti, Kudelski Group.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002279 * Wipe stack buffer temporarily holding EC private exponent
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01002280 after keypair generation.
2281 * Fix a potential heap buffer over-read in ALPN extension parsing
Hanno Becker0cd5b942017-10-13 17:17:28 +01002282 (server-side). Could result in application crash, but only if an ALPN
2283 name larger than 16 bytes had been configured on the server.
2284 * Change default choice of DHE parameters from untrustworthy RFC 5114
Gilles Peskine28a0c722017-10-17 19:01:38 +02002285 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002286 manner.
2287
Gilles Peskinec82fbb42017-12-15 15:01:27 +01002288Features
2289 * Allow comments in test data files.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02002290 * The selftest program can execute a subset of the tests based on command
2291 line arguments.
Gilles Peskine618d0912018-01-02 16:04:19 +01002292 * New unit tests for timing. Improve the self-test to be more robust
Jaeden Amero91d49e82018-01-11 16:35:44 +00002293 when run on a heavily-loaded machine.
Jaeden Amero15263302017-09-21 12:53:48 +01002294 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01002295 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Ron Eldor314adb62017-10-10 18:28:25 +03002296 * Add support for alternative implementations of GCM, selected by the
2297 configuration flag MBEDTLS_GCM_ALT.
2298 * Add support for alternative implementations for ECDSA, controlled by new
Ron Eldor2981a0a2017-09-24 15:41:09 +03002299 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
Ron Eldor314adb62017-10-10 18:28:25 +03002300 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03002301 The following functions from the ECDSA module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002302 with alternative implementation:
2303 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Ron Eldora84c1cb2017-10-10 19:04:27 +03002304 * Add support for alternative implementation of ECDH, controlled by the
Ron Eldor8b766212017-09-24 15:44:56 +03002305 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
2306 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
2307 The following functions from the ECDH module can be replaced
Hanno Becker087d5ad2018-01-24 16:06:25 +00002308 with an alternative implementation:
2309 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Simon Butcher55fc4e02018-02-05 01:09:13 +00002310 * Add support for alternative implementation of ECJPAKE, controlled by
Gilles Peskine26182ed2017-09-29 15:45:12 +02002311 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Hanno Beckera47023e2017-12-22 17:08:03 +00002312 * Add mechanism to provide alternative implementation of the DHM module.
2313
2314API Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00002315 * Extend RSA interface by multiple functions allowing structure-
Hanno Beckera47023e2017-12-22 17:08:03 +00002316 independent setup and export of RSA contexts. Most notably,
2317 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
2318 up RSA contexts from partial key material and having them completed to the
2319 needs of the implementation automatically. This allows to setup private RSA
2320 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
2321 purpose or CRT and/or blinding.
Gilles Peskine0a969102018-01-22 14:55:20 +01002322 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
2323 implementations of the RSA interface declared in rsa.h.
2324 * The following functions in the message digest modules (MD2, MD4, MD5,
2325 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
2326 The new functions change the return type from void to int to allow
2327 returning error codes when using MBEDTLS_<MODULE>_ALT.
2328 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01002329 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02002330 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Ron Eldor73a38172017-10-03 15:58:26 +03002331 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
2332
Simon Butcher55fc4e02018-02-05 01:09:13 +00002333New deprecations
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01002334 * Deprecate usage of RSA primitives with non-matching key-type
2335 (e.g. signing with a public key).
Jaeden Amero005239e2018-01-25 14:47:39 +00002336 * Direct manipulation of structure fields of RSA contexts is deprecated.
2337 Users are advised to use the extended RSA API instead.
2338 * Deprecate usage of message digest functions that return void
2339 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
2340 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
Hanno Becker0cd5b942017-10-13 17:17:28 +01002341 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
2342 that can return an error code.
2343 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
2344 parameters from RFC 3526 or the newly added parameters from RFC 7919.
2345 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002346 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
2347 etc.
Hanno Becker0cd5b942017-10-13 17:17:28 +01002348 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002349 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002350 accepting DHM parameters in binary form, matching the new constants.
2351
2352Bugfix
Simon Butcher2c4f9462017-09-30 23:39:46 +01002353 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
Simon Butcherb03120a2018-04-30 16:40:25 +01002354 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher16373a52017-10-02 19:12:54 +01002355 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Ron Eldor73a38172017-10-03 15:58:26 +03002356 Found by projectgus and Jethro Beekman, #836.
2357 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
2358 * Parse signature algorithm extension when renegotiating. Previously,
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00002359 renegotiated handshakes would only accept signatures using SHA-1
2360 regardless of the peer's preferences, or fail if SHA-1 was disabled.
2361 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
Gilles Peskine91048a32017-10-19 17:46:14 +02002362 dates on leap years with 100 and 400 intervals are handled correctly. Found
2363 by Nicholas Wilson. #694
Gilles Peskinee7707222017-11-24 15:35:50 +01002364 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
2365 accepted. Generating these signatures required the private key.
2366 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01002367 Found independently by Florian in the mbed TLS forum and by Mishamax.
2368 #878, #1019.
Andres AG51a7ae12017-02-22 16:23:26 +00002369 * Fix variable used before assignment compilation warnings with IAR
2370 toolchain. Found by gkerrien38.
2371 * Fix unchecked return codes from AES, DES and 3DES functions in
2372 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
2373 If a call to one of the functions of the cryptographic primitive modules
2374 failed, the error may not be noticed by the function
Gilles Peskine4b117d92017-11-28 17:23:37 +01002375 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
2376 Guido Vranken. #756
Hanno Becker041a6b02017-09-28 14:52:26 +01002377 * Include configuration file in md.h, to fix compilation warnings.
2378 Reported by aaronmdjones in #1001
2379 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
Hanno Becker86e52302017-10-05 09:08:53 +01002380 writing routines that prevented these functions to work with alternative
2381 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Gilles Peskined742b742017-11-28 17:40:56 +01002382 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
Simon Butcher55fc4e02018-02-05 01:09:13 +00002383 non-v3 CRT's.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01002384 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00002385 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Becker479e8e22017-10-12 15:39:45 +01002386 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002387 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Darryl Green36ba8b62017-11-21 09:55:33 +00002388 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Gilles Peskineff01e002017-12-01 23:42:17 +01002389 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Gilles Peskined6294112017-12-01 23:46:58 +01002390 Reported by Yolan Romailler.
Hanno Becker81e96dd2017-09-18 11:07:25 +01002391 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
2392 * Fix incorrect unit in benchmark output. #850
Ron Eldore1a9a4a2017-10-17 18:15:41 +03002393 * Add size-checks for record and handshake message content, securing
2394 fragile yet non-exploitable code-paths.
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01002395 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
Simon Butcher55fc4e02018-02-05 01:09:13 +00002396 MilenkoMitrovic, #1104
Gilles Peskineec9c6262018-01-02 16:27:50 +01002397 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
2398 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Hanno Becker997e2182018-01-10 10:39:20 +00002399 * Fix possible memory leaks in mbedtls_gcm_self_test().
2400 * Added missing return code checks in mbedtls_aes_self_test().
2401 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
2402 RSA test suite where the failure of CTR DRBG initialization lead to
Gilles Peskine980d2032018-01-22 23:10:53 +01002403 freeing an RSA context and several MPI's without proper initialization
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01002404 beforehand.
2405 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002406 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
2407 Found and fixed by Martijn de Milliano.
2408 * Fix an issue in the cipher decryption with the mode
2409 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
Gilles Peskined91f2a22018-01-19 11:25:10 +01002410 Note, this padding mode is not used by the TLS protocol. Found and fixed by
2411 Micha Kraus.
2412 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
2413 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
Gilles Peskine0a969102018-01-22 14:55:20 +01002414 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
2415 mbedtls_sha512_init() is called before operating on the relevant context
2416 structure. Do not assume that zeroizing a context is a correct way to
Simon Butcher55fc4e02018-02-05 01:09:13 +00002417 reset it. Found independently by ccli8 on Github.
2418 * In mbedtls_entropy_free(), properly free the message digest context.
Hanno Becker86e52302017-10-05 09:08:53 +01002419 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
2420 and fixed by muddog.
Simon Butcher55fc4e02018-02-05 01:09:13 +00002421
Hanno Becker86e52302017-10-05 09:08:53 +01002422Changes
2423 * Extend cert_write example program by options to set the certificate version
Hanno Becker32297e82017-12-22 10:24:32 +00002424 and the message digest. Further, allow enabling/disabling of authority
2425 identifier, subject identifier and basic constraints extensions.
2426 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
2427 particular, don't require P,Q if neither CRT nor blinding are
Gilles Peskineec9c6262018-01-02 16:27:50 +01002428 used. Reported and fix proposed independently by satur9nine and sliai
Gilles Peskine50984002018-01-17 08:01:37 +01002429 on GitHub.
2430 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine0a969102018-01-22 14:55:20 +01002431 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
2432 undeclared dependency of the RSA module on the ASN.1 module.
2433 * Update all internal usage of deprecated message digest functions to the
2434 new ones with return codes. In particular, this modifies the
Jaeden Amero791e08a2018-01-26 12:04:12 +00002435 mbedtls_md_info_t structure. Propagate errors from these functions
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01002436 everywhere except some locations in the ssl_tls.c module.
2437 * Improve CTR_DRBG error handling by propagating underlying AES errors.
2438 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
Hanno Becker2a037942017-10-06 12:29:50 +01002439 modules where the software implementation can be replaced by a hardware
2440 implementation.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01002441 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
Simon Butcher72ea31b2017-08-10 11:51:16 +01002442 throughout the library.
Ron Eldord5a75f42016-12-16 16:15:56 +02002443
Simon Butcherb060cc22017-07-28 01:04:34 +01002444= mbed TLS 2.6.0 branch released 2017-08-10
Simon Butcher01971d02017-08-10 10:48:01 +01002445
Simon Butcherf85c90a2017-07-27 15:11:52 +01002446Security
2447 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcher01971d02017-08-10 10:48:01 +01002448 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
2449 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher3f2557e2017-08-01 18:06:12 +01002450 (default: 8) intermediates, even when it was not trusted. This could be
2451 triggered remotely from either side. (With authmode set to 'required'
Hanno Becker7ec83df2017-06-27 08:26:53 +01002452 (the default), the handshake was correctly aborted).
2453 * Reliably wipe sensitive data after use in the AES example applications
Simon Butcherf85c90a2017-07-27 15:11:52 +01002454 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002455 Found by Laurent Simon.
2456
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01002457Features
2458 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01002459 and the context struct mbedtls_platform_context to perform
Simon Butcher3f2557e2017-08-01 18:06:12 +01002460 platform-specific setup and teardown operations. The macro
Simon Butcher01971d02017-08-10 10:48:01 +01002461 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
2462 by the user in a platform_alt.h file. These new functions are required in
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01002463 some embedded environments to provide a means of initialising underlying
Simon Butcherab670432017-07-20 12:33:41 +02002464 cryptographic acceleration hardware.
2465
2466API Changes
2467 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
Simon Butcher3f2557e2017-08-01 18:06:12 +01002468 API consistent with mbed TLS 2.5.0. Specifically removed the inline
2469 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcherf85c90a2017-07-27 15:11:52 +01002470 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
2471 by James Cowgill. #978
2472 * Certificate verification functions now set flags to -1 in case the full
Simon Butcher01971d02017-08-10 10:48:01 +01002473 chain was not verified due to an internal error (including in the verify
Simon Butcherf85c90a2017-07-27 15:11:52 +01002474 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01002475 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherab670432017-07-20 12:33:41 +02002476 verification of the peer's certificate failed due to an overlong chain or
Ron Eldore2efaea2016-12-16 16:15:56 +02002477 a fatal error in the verify callback.
Simon Butcher01971d02017-08-10 10:48:01 +01002478
2479Bugfix
2480 * 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 +02002481 Reported by roberto. #716
Simon Butcher3f2557e2017-08-01 18:06:12 +01002482 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Simon Butcher01971d02017-08-10 10:48:01 +01002483 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
2484 always be implemented by pthread support. #696
Ron Eldorca6ff582017-01-12 14:50:50 +02002485 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
Simon Butcher3f2557e2017-08-01 18:06:12 +01002486 in the case of an error. Found by redplait. #590
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01002487 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
2488 Reported and fix suggested by guidovranken. #740
Simon Butcher5deb5182017-07-26 17:25:55 +01002489 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
Simon Butcher3f2557e2017-08-01 18:06:12 +01002490 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01002491 * Fix a potential integer overflow in the version verification for DER
2492 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Andres AG2e65a542017-02-17 13:54:43 +00002493 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002494 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00002495 * Fix potential integer overflow in the version verification for DER
2496 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Simon Butcher5deb5182017-07-26 17:25:55 +01002497 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002498 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01002499 * Fix a potential integer overflow in the version verification for DER
Simon Butchera418e822017-07-28 23:52:10 +01002500 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher3f2557e2017-08-01 18:06:12 +01002501 constructed certificates to bypass the certificate verification check.
2502 * Fix a call to the libc function time() to call the platform abstraction
2503 function mbedtls_time() instead. Found by wairua. #666
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02002504 * Avoid shadowing of time and index functions through mbed TLS function
Janos Follath78b14732017-06-22 10:02:07 +01002505 arguments. Found by inestlerode. #557.
Janos Follathb85291c2017-06-22 10:02:07 +01002506
Simon Butcher3f2557e2017-08-01 18:06:12 +01002507Changes
2508 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Janos Follath78b14732017-06-22 10:02:07 +01002509 64-bit division. This is useful on embedded platforms where 64-bit division
2510 created a dependency on external libraries. #708
2511 * Removed mutexes from ECP hardware accelerator code. Now all hardware
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01002512 accelerator code in the library leaves concurrency handling to the
2513 platform. Reported by Steven Cooreman. #863
Simon Butcher3f2557e2017-08-01 18:06:12 +01002514 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
2515 config-no-entropy.h to reduce the RAM footprint.
Hanno Becker85b602e2017-05-04 11:27:39 +01002516 * Added a test script that can be hooked into git that verifies commits
Janos Follath78b14732017-06-22 10:02:07 +01002517 before they are pushed.
Simon Butcherf2a597f2017-06-20 23:08:10 +01002518 * Improve documentation of PKCS1 decryption functions.
Hanno Beckereccf60c2017-06-05 15:19:01 +01002519
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002520= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01002521
2522Security
2523 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
2524 The issue could only happen client-side with renegotiation enabled.
2525 Could result in DoS (application crash) or information leak
Gilles Peskine5d2511c2017-05-12 13:16:40 +02002526 (if the application layer sent data read from mbedtls_ssl_read()
2527 back to the server or to a third party). Can be triggered remotely.
2528 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
Gilles Peskined50177f2017-05-16 17:53:03 +02002529 certificate verification. SHA-1 can be turned back on with a compile-time
2530 option if needed.
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02002531 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
2532 detect it sometimes. Reported by Hugo Leisink. #810
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002533 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
Hanno Beckereccf60c2017-06-05 15:19:01 +01002534 potential Bleichenbacher/BERserk-style attack.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002535
2536Bugfix
2537 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
Hanno Becker7e5437a2017-04-28 17:15:26 +01002538 valid C and they prevented the test from compiling in Visual Studio 2015
2539 and with GCC using the -Wpedantic compilation option.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002540 * Fix insufficient support for signature-hash-algorithm extension,
2541 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Gilles Peskine3df98f52017-05-10 17:47:40 +02002542 * Fix behaviour that hid the original cause of fatal alerts in some cases
Janos Follath5a1c0e72017-06-16 09:00:07 +01002543 when sending the alert failed. The fix makes sure not to hide the error
2544 that triggered the alert.
2545 * Fix SSLv3 renegotiation behaviour and stop processing data received from
2546 peer after sending a fatal alert to refuse a renegotiation attempt.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01002547 Previous behaviour was to keep processing data even after the alert has
Simon Butcherb03120a2018-04-30 16:40:25 +01002548 been sent.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002549 * Accept empty trusted CA chain in authentication mode
2550 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
2551 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
2552 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
2553 reflect bad EC curves within verification result.
2554 * Fix bug that caused the modular inversion function to accept the invalid
2555 modulus 1 and therefore to hang. Found by blaufish. #641.
2556 * Fix incorrect sign computation in modular exponentiation when the base is
2557 a negative MPI. Previously the result was always negative. Found by Guido
2558 Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02002559 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
Gilles Peskine36091fe2017-05-03 16:55:03 +02002560 that was triggered uppon reading an empty line. Found by Guido Vranken.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002561
2562Changes
Janos Follath0a5154b2017-03-10 11:31:41 +00002563 * Send fatal alerts in more cases. The previous behaviour was to skip
Janos Follath5a1c0e72017-06-16 09:00:07 +01002564 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00002565 * Clarify ECDSA documentation and improve the sample code to avoid
Gilles Peskine36091fe2017-05-03 16:55:03 +02002566 misunderstanding and potentially dangerous use of the API. Pointed out
Simon Butcher9f770172017-05-15 15:13:59 +01002567 by Jean-Philippe Aumasson.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002568
Janos Follath45182a02017-03-23 10:41:56 +00002569= mbed TLS 2.5.0 branch released 2017-05-17
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01002570
Janos Follath5a1c0e72017-06-16 09:00:07 +01002571Security
2572 * Wipe stack buffers in RSA private key operations
Janos Follath45182a02017-03-23 10:41:56 +00002573 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
2574 Simon.
2575 * Add exponent blinding to RSA private operations as a countermeasure
2576 against side-channel attacks like the cache attack described in
2577 https://arxiv.org/abs/1702.08719v2.
2578 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
Simon Butcher4775e832017-05-13 22:56:08 +01002579 Clémentine Maurice and Stefan Mangard.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002580
2581Features
2582 * Add hardware acceleration support for the Elliptic Curve Point module.
2583 This involved exposing parts of the internal interface to enable
Janos Follath7a8a0902017-04-10 16:13:06 +01002584 replacing the core functions and adding and alternative, module level
2585 replacement support for enabling the extension of the interface.
2586 * Add a new configuration option to 'mbedtls_ssl_config' to enable
2587 suppressing the CA list in Certificate Request messages. The default
Andres AGf5bf7182017-03-03 14:09:56 +00002588 behaviour has not changed, namely every configured CAs name is included.
2589
2590API Changes
2591 * The following functions in the AES module have been deprecated and replaced
2592 by the functions shown below. The new functions change the return type from
2593 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
2594 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
2595 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002596 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
2597
2598Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01002599 * Remove macros from compat-1.3.h that correspond to deleted items from most
2600 recent versions of the library. Found by Kyle Keen.
2601 * Fixed issue in the Threading module that prevented mutexes from
2602 initialising. Found by sznaider. #667 #843
2603 * Add checks in the PK module for the RSA functions on 64-bit systems.
2604 The PK and RSA modules use different types for passing hash length and
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002605 without these checks the type cast could lead to data loss. Found by Guido
Simon Butcherb65c2be2017-03-10 18:50:44 +00002606 Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002607
Janos Follath182013f2016-10-25 10:50:22 +01002608= mbed TLS 2.4.2 branch released 2017-03-08
Simon Butcherb65c2be2017-03-10 18:50:44 +00002609
2610Security
2611 * Add checks to prevent signature forgeries for very large messages while
2612 using RSA through the PK module in 64-bit systems. The issue was caused by
2613 some data loss when casting a size_t to an unsigned int value in the
Andres AG939954c2016-12-08 17:08:44 +00002614 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
2615 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
2616 * Fixed potential livelock during the parsing of a CRL in PEM format in
2617 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
2618 characters after the footer could result in the execution of an infinite
Janos Follath182013f2016-10-25 10:50:22 +01002619 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
2620 Microsoft.
Simon Butcher0621b1f2017-02-05 16:48:47 +00002621 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
Janos Follath7dadc2f2017-01-27 16:05:20 +00002622 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
2623 Introduced by interoperability fix for #513.
2624 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
Simon Butcher71e9d582017-02-28 18:47:27 +00002625 when verifying the validity of a key on secp224k1. This could be
Simon Butcher8b987502017-03-07 12:37:14 +00002626 triggered remotely for example with a maliciously constructed certificate
2627 and potentially could lead to remote code execution on some platforms.
Janos Follath7dadc2f2017-01-27 16:05:20 +00002628 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
Andres AG703990b2016-10-24 11:23:36 +01002629 team. #569 CVE-2017-2784
Andres AGd1650662016-12-09 17:26:23 +00002630
2631Bugfix
2632 * Fix output certificate verification flags set by x509_crt_verify_top() when
2633 traversing a chain of trusted CA. The issue would cause both flags,
2634 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
Simon Butcherd57c8f02017-02-02 13:08:37 +00002635 set when the verification conditions are not met regardless of the cause.
2636 Found by Harm Verhagen and inestlerode. #665 #561
2637 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
Andres AGc0db5112016-12-07 15:05:53 +00002638 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
2639 Found by omlib-lin. #673
Simon Butchera333b3c2017-02-02 16:17:37 +00002640 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
Andres AG2196c7f2016-12-15 17:01:16 +00002641 x509_csr.c that are reported when building mbed TLS with a config.h that
2642 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
2643 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
2644 would compare 64 bits of the record counter instead of 48 bits as indicated
2645 in RFC 6347 Section 4.3.1. This could cause the execution of the
Andres AG703990b2016-10-24 11:23:36 +01002646 renegotiation routines at unexpected times when the protocol is DTLS. Found
Andres AG9c94b692016-10-24 14:31:54 +01002647 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01002648 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00002649 the input string in PEM format to extract the different components. Found
2650 by Eyal Itkin.
2651 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
2652 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2653 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
2654 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00002655 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
2656 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00002657 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
2658 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG5708dcb2016-12-08 17:19:21 +00002659 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
2660 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Simon Butcherd02dc142017-02-28 16:36:22 +00002661 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
2662 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcher956c58f2017-03-02 09:18:09 +00002663 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
2664 fix proposed by Guido Vranken. #722
2665 * Fixed the templates used to generate project and solution files for Visual
Ron Eldor12e0b802017-01-29 18:51:35 +02002666 Studio 2015 as well as the files themselves, to remove a build warning
2667 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Andres AGd1cc7f62017-01-06 13:17:35 +00002668 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
2669 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
2670 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
Simon Butcher81cf88f2017-03-07 19:35:49 +00002671 number to write in hexadecimal is negative and requires an odd number of
2672 digits. Found and fixed by Guido Vranken.
Andres AG703990b2016-10-24 11:23:36 +01002673 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
Janos Follath4c006cd2016-12-13 14:14:03 +00002674 by inestlerode. #555
Janos Follath5da3a6f2016-12-13 11:51:04 +00002675
2676= mbed TLS 2.4.1 branch released 2016-12-13
2677
2678Changes
2679 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2680 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
Simon Butcher19dbd412016-10-16 19:35:49 +01002681 Authentication – October 2016
Simon Butchercf8c1f42016-09-02 21:29:39 +03002682
Andres AG60dbc932016-09-02 15:23:48 +01002683= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butcheref8fa012016-10-16 00:44:08 +01002684
2685Security
2686 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2687 with RFC-5116 and could lead to session key recovery in very long TLS
2688 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2689 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
Andres AG60dbc932016-09-02 15:23:48 +01002690 https://eprint.iacr.org/2016/475.pdf
Andres AGe0af9952016-09-07 11:09:44 +01002691 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Simon Butcheref8fa012016-10-16 00:44:08 +01002692 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AG60dbc932016-09-02 15:23:48 +01002693 without checking whether there is enough space in the destination. The
Simon Butchercf8c1f42016-09-02 21:29:39 +03002694 issue cannot be triggered remotely. Found by Jethro Beekman.
Simon Butcher21c54812016-10-05 14:17:37 +01002695
2696Features
Simon Butchercf8c1f42016-09-02 21:29:39 +03002697 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2698 NIST SP 800-38B, RFC-4493 and RFC-4615.
2699 * Added hardware entropy selftest to verify that the hardware entropy source
2700 is functioning correctly.
Andres AGf9113192016-09-02 14:06:04 +01002701 * Added a script to print build environment info for diagnostic use in test
2702 scripts, which is also now called by all.sh.
2703 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
Simon Butcheref8fa012016-10-16 00:44:08 +01002704 configure the maximum length of a file path that can be buffered when
Andres AGf84f8922016-09-19 15:33:30 +01002705 calling mbedtls_x509_crt_parse_path().
Andres AG7abc9742016-09-23 17:58:49 +01002706 * Added a configuration file config-no-entropy.h that configures the subset of
2707 library features that do not require an entropy source.
2708 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
Simon Butchercf8c1f42016-09-02 21:29:39 +03002709 to configure the minimum number of bytes for entropy sources using the
2710 mbedtls_hardware_poll() function.
2711
2712Bugfix
2713 * Fix for platform time abstraction to avoid dependency issues where a build
2714 may need time but not the standard C library abstraction, and added
Simon Butcheref8fa012016-10-16 00:44:08 +01002715 configuration consistency checks to check_config.h
2716 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butchercad6e932016-09-05 01:46:59 +03002717 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2718 when GCM is used. Found by udf2457. #441
Simon Butcherc0d76b82016-09-07 17:25:16 +03002719 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2720 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcheref8fa012016-10-16 00:44:08 +01002721 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
Simon Butcherd43fb952016-09-26 20:48:56 +01002722 a contribution from Tobias Tangemann. #541
Andres AG776a6fc2016-09-26 09:52:41 +01002723 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcher3a5e0702016-10-12 16:37:59 +01002724 certificates are provided.
Simon Butcher851ae292016-10-11 10:13:52 +01002725 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcheref8fa012016-10-16 00:44:08 +01002726 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcherf77309c2016-10-07 15:56:07 +01002727 * Fixed pthread implementation to avoid unintended double initialisations
2728 and double frees. Found by Niklas Amnebratt.
2729 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
Andres AG4bdbe092016-09-19 16:58:45 +01002730 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2731 by inestlerode. #559.
Simon Butcherb81496b2016-10-13 14:03:37 +01002732 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
Andres AG821da842016-09-26 10:09:30 +01002733 data structure until after error checks are successful. Found by
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002734 subramanyam-c. #622
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002735 * Fix documentation and implementation missmatch for function arguments of
Andres AG5a87c932016-09-26 14:53:05 +01002736 mbedtls_gcm_finish(). Found by cmiatpaar. #602
2737 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG4b76aec2016-09-23 13:16:02 +01002738 * Fix potential byte overread when verifying malformed SERVER_HELLO in
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002739 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Simon Butcher99000142016-10-13 17:21:01 +01002740 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
2741 Found by subramanyam-c. #626
2742 * Fix compatibility issue with Internet Explorer client authentication,
Janos Follath240f1852016-10-14 15:23:21 +01002743 where the limited hash choices prevented the client from sending its
Simon Butchercf8c1f42016-09-02 21:29:39 +03002744 certificate. Found by teumas. #513
2745 * Fix compilation without MBEDTLS_SELF_TEST enabled.
2746
2747Changes
2748 * Extended test coverage of special cases, and added new timing test suite.
2749 * Removed self-tests from the basic-built-test.sh script, and added all
2750 missing self-tests to the test suites, to ensure self-tests are only
2751 executed once.
2752 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
Simon Butcher5908bcc2016-09-04 15:12:09 +01002753 * Added support for a Yotta specific configuration file -
Simon Butcheref8fa012016-10-16 00:44:08 +01002754 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Andres AG788aa4a2016-09-14 14:32:09 +01002755 * Added optimization for code space for X.509/OID based on configured
2756 features. Contributed by Aviv Palivoda.
2757 * Renamed source file library/net.c to library/net_sockets.c to avoid
2758 naming collision in projects which also have files with the common name
Simon Butcher59bffa22016-10-13 15:55:56 +01002759 net.c. For consistency, the corresponding header file, net.h, is marked as
2760 deprecated, and its contents moved to net_sockets.h.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002761 * Changed the strategy for X.509 certificate parsing and validation, to no
Simon Butcher46125fb2016-06-27 19:43:55 +01002762 longer disregard certificates with unrecognised fields.
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002763
Janos Follathcc4eba72016-02-10 16:25:55 +00002764= mbed TLS 2.3.0 branch released 2016-06-28
Janos Follathe43b81a2016-02-10 16:25:55 +00002765
Janos Follath3218b212016-02-10 16:14:10 +00002766Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002767 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
2768 required by PKCS1 v2.2
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002769 * Fix potential integer overflow to buffer overflow in
Hanno Becker01a0e072017-07-26 11:49:40 +01002770 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Janos Follathbc247c92016-02-11 11:15:44 +00002771 (not triggerable remotely in (D)TLS).
2772 * Fix a potential integer underflow to buffer overread in
Janos Follathcc4eba72016-02-10 16:25:55 +00002773 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002774 SSL/TLS.
2775
2776Features
2777 * Support for platform abstraction of the standard C library time()
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002778 function.
2779
2780Bugfix
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002781 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002782 arguments where the same (in-place doubling). Found and fixed by Janos
2783 Follath. #309
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002784 * Fix potential build failures related to the 'apidoc' target, introduced
Antonin Décimo36e89b52019-01-23 15:24:37 +01002785 in the previous patch release. Found by Robert Scheck. #390 #391
Janos Follath4ae5c292016-02-10 11:27:43 +00002786 * Fix issue in Makefile that prevented building using armar. #386
Simon Butcherf59e66b2016-03-01 20:26:16 +00002787 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
2788 ECDSA was disabled in config.h . The leak didn't occur by default.
2789 * Fix an issue that caused valid certificates to be rejected whenever an
Hanno Becker01a0e072017-07-26 11:49:40 +01002790 expired or not yet valid certificate was parsed before a valid certificate
Janos Follathcc0e49d2016-02-17 14:34:12 +00002791 in the trusted certificate list.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002792 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follath1ed9f992016-03-18 11:45:44 +00002793 buffer after DER certificates to be included in the raw representation.
2794 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath8a317052016-04-21 23:37:09 +01002795 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2796 dereference possible.
Simon Butcherf8935072016-04-29 00:05:32 +01002797 * Fix issue that caused a crash if invalid curves were passed to
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002798 mbedtls_ssl_conf_curves. #373
Paul Bakkerf8e37942016-05-13 10:50:41 +01002799 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Simon Butcher46125fb2016-06-27 19:43:55 +01002800 * Fix memory leaks in test framework
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002801 * Fix test in ssl-opt.sh that does not run properly with valgrind
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002802 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
2803
2804Changes
2805 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002806 don't use the optimized assembly for bignum multiplication. This removes
Simon Butchera543d112016-04-26 12:51:37 +01002807 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
2808 * Disabled SSLv3 in the default configuration.
Janos Follathc6dab2b2016-05-23 14:27:02 +01002809 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2810 Skalozub).
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002811 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2812 ignored, as required by RFC6101.
2813
2814= mbed TLS 2.2.1 released 2016-01-05
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002815
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002816Security
Simon Butcher00923c12015-12-22 19:04:24 +00002817 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002818 allocate memory. Only used for certificate generation, not triggerable
2819 remotely in SSL/TLS. Found by Rafał Przywara. #367
2820 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002821 SLOTH attack on TLS 1.2 server authentication (other attacks from the
Simon Butcher1285ab52016-01-01 21:42:47 +00002822 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002823 https://www.mitls.org/pages/attacks/SLOTH
2824
2825Bugfix
2826 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2827 * Fix bug in certificate validation that caused valid chains to be rejected
Simon Butcher207990d2015-12-16 01:51:30 +00002828 when the first intermediate certificate has pathLenConstraint=0. Found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002829 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher04799a42015-09-29 00:31:09 +01002830 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002831 JayaraghavendranK. #372
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002832 * Fix suboptimal handling of unexpected records that caused interop issues
2833 with some peers over unreliable links. Avoid dropping an entire DTLS
2834 datagram if a single record in a datagram is unexpected, instead only
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002835 drop the record and look at subsequent records (if any are present) in
2836 the same datagram. Found by jeannotlapin. #345
Simon Butcher59a8fa72015-11-03 23:09:28 +00002837
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002838= mbed TLS 2.2.0 released 2015-11-04
2839
2840Security
Simon Butcher59a8fa72015-11-03 23:09:28 +00002841 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002842 once and some allocation fails. Cannot be forced remotely. Found by Guido
2843 Vranken, Intelworks.
2844 * Fix potential heap corruption on Windows when
2845 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002846 triggered remotely. Found by Guido Vranken, Intelworks.
2847 * Fix potential buffer overflow in some asn1_write_xxx() functions.
2848 Cannot be triggered remotely unless you create X.509 certificates based
2849 on untrusted input or write keys of untrusted origin. Found by Guido
2850 Vranken, Intelworks.
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002851 * The X509 max_pathlen constraint was not enforced on intermediate
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002852 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002853 Janos Follath. #280 and #319
2854
2855Features
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002856 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2857 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002858 * Added a key extraction callback to accees the master secret and key
2859 block. (Potential uses include EAP-TLS and Thread.)
Simon Butcher62aab152015-10-27 16:05:34 +00002860
2861Bugfix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002862 * Self-signed certificates were not excluded from pathlen counting,
2863 resulting in some valid X.509 being incorrectly rejected. Found and fix
2864 provided by Janos Follath. #319
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002865 * Fix build error with configurations where ECDHE-PSK is the only key
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002866 exchange. Found and fix provided by Chris Hammond. #270
2867 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002868 ECHD-ECDSA if the only key exchange. Multiple reports. #310
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002869 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
2870 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
2871 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002872 size/curve against the profile. Before that, there was no way to set a
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002873 minimum key size for end-entity certificates with RSA keys. Found by
2874 Matthew Page of Scannex Electronics Ltd.
2875 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002876 Found by Kurt Danielson. #292
2877 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
2878 * Fix bug in ASN.1 encoding of booleans that caused generated CA
Simon Butcher04799a42015-09-29 00:31:09 +01002879 certificates to be rejected by some applications, including OS X
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002880 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002881
2882Changes
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002883 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2884 or -1.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002885
2886= mbed TLS 2.1.2 released 2015-10-06
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002887
2888Security
Simon Butcherc48b66b2015-10-05 10:18:17 +01002889 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002890 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002891 Intelworks.
2892 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
2893 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2894 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
Simon Butchera45aa132015-10-05 00:26:36 +01002895 remotely.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002896 * Fix stack buffer overflow in pkcs12 decryption (used by
2897 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
2898 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2899 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2900 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2901 of TLS, but might be in other uses. On 32 bit machines, requires reading a
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002902 string of close to or larger than 1GB to exploit; on 64 bit machines, would
Simon Butcherfec73a82015-10-05 10:40:31 +01002903 require reading a string of close to or larger than 2^62 bytes.
2904 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002905 on crafted PEM input data. Found and fix provided by Guido Vranken,
2906 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
2907 accept PEM data from an untrusted source.
Simon Butcher475cf0a2015-10-05 11:57:54 +01002908 * Fix possible heap buffer overflow in base64_encoded() when the input
Simon Butcher04799a42015-09-29 00:31:09 +01002909 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002910 Intelworks. Not trigerrable remotely in TLS.
2911 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
2912 the same mbedtls_ssl_config object and memory allocation fails. Found by
Simon Butcher7776fc32015-10-05 15:44:18 +01002913 Guido Vranken, Intelworks. Cannot be forced remotely.
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002914 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher04799a42015-09-29 00:31:09 +01002915 authentication against a crafted CA cert. Cannot be triggered remotely
2916 unless you allow third parties to pick trust CAs for client auth.
2917 Found by Guido Vranken, Intelworks.
Simon Butchera12e3c02015-10-01 01:59:33 +01002918
2919Bugfix
Simon Butcher04799a42015-09-29 00:31:09 +01002920 * Fix compile error in net.c with musl libc. Found and patch provided by
Simon Butcher5624ec82015-09-29 01:06:06 +01002921 zhasha (#278).
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002922 * Fix macroization of 'inline' keyword when building as C++. (#279)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002923
2924Changes
2925 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
2926 domain names are compliant with RFC 1035.
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002927 * Fixed paths for check_config.h in example config files. (Found by bachp)
2928 (#291)
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002929
2930= mbed TLS 2.1.1 released 2015-09-17
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002931
Simon Butchera1a11282015-09-14 21:30:40 +01002932Security
2933 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02002934 signatures. (Found by Florian Weimer, Red Hat.)
2935 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
2936 * Fix possible client-side NULL pointer dereference (read) when the client
Simon Butcherd69f14b2015-09-11 20:00:20 +01002937 tries to continue the handshake after it failed (a misuse of the API).
2938 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
2939 afl-fuzz.)
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02002940
2941Bugfix
2942 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
2943 * Fix off-by-one error in parsing Supported Point Format extension that
2944 caused some handshakes to fail.
2945
2946Changes
Simon Butcherd69f14b2015-09-11 20:00:20 +01002947 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002948 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002949 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002950 connection, if cookie verification is available
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02002951 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
2952 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002953 detected and mbedtls_ssl_read() will return
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002954 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
2955 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02002956
2957= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02002958
2959Features
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002960 * Added support for yotta as a build system.
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02002961 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002962
2963Bugfix
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02002964 * Fix segfault in the benchmark program when benchmarking DHM.
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02002965 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
2966 Leisink).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02002967 * Fix bug when parsing a ServerHello without extensions (found by David
2968 Sears).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02002969 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
2970 (found by Benoit Lecocq).
2971 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02002972 installed (found by Rawi666).
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02002973 * Fix compile error with armcc 5 with --gnu option.
2974 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02002975 (found by robotanarchy) (#232).
2976 * Fix bug in Makefile that prevented from installing without building the
2977 tests (found by robotanarchy) (#232).
Simon Butcher52754592015-09-03 13:06:01 +01002978 * Fix missing -static-libgcc when building shared libraries for Windows
2979 with make.
2980 * Fix link error when building shared libraries for Windows with make.
2981 * Fix error when loading libmbedtls.so.
2982 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
2983 be always used (found by dcb314) (#235)
2984 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002985 result trying to unlock an unlocked mutex on invalid input (found by
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02002986 Fredrik Axelsson) (#257)
2987 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002988 * Fix memory corruption on client with overlong PSK identity, around
2989 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
2990 Aleksandrs Saveljevs) (#238)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02002991 * Fix unused function warning when using MBEDTLS_MDx_ALT or
2992 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
2993 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
Simon Butcher52754592015-09-03 13:06:01 +01002994
2995Changes
2996 * The PEM parser now accepts a trailing space at end of lines (#226).
2997 * It is now possible to #include a user-provided configuration file at the
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002998 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
Paul Bakker4cb87f42015-07-10 14:09:43 +01002999 compiler's command line.
Paul Bakker9c5898f2015-02-16 16:18:33 +01003000 * When verifying a certificate chain, if an intermediate certificate is
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003001 trusted, no later cert is checked. (suggested by hannes-landeholm)
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003002 (#220).
3003 * Prepend a "thread identifier" to debug messages (issue pointed out by
3004 Hugo Leisink) (#210).
3005 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
3006 length.
3007
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003008= mbed TLS 2.0.0 released 2015-07-13
3009
3010Features
3011 * Support for DTLS 1.0 and 1.2 (RFC 6347).
3012 * Ability to override core functions from MDx, SHAx, AES and DES modules
3013 with custom implementation (eg hardware accelerated), complementing the
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02003014 ability to override the whole module.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003015 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02003016 preserve forward secrecy, and allows sharing across multiple contexts.
3017 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003018 which algorithms and key sizes (curves for ECDSA) are acceptable.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003019 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003020 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01003021 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02003022 parameters.
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02003023
3024API Changes
3025 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003026 You now need to link to all of them if you use TLS for example.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003027 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003028 Some names have been further changed to make them more consistent.
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02003029 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003030 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003031 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003032 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02003033 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02003034 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02003035 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02003036 * The following _init() functions that could return errors have
3037 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02003038 should generally be the first function called on this context after init:
3039 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003040 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003041 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Tillmann Karras588ad502015-09-25 04:27:22 +02003042 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003043 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
3044 Note that for mbedtls_ssl_setup(), you need to be done setting up the
3045 ssl_config structure before calling it.
3046 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003047 ssl_set_session() and ssl_set_client_transport_id(), plus
3048 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003049 (see rename.pl and compat-1.3.h above) and their first argument's type
3050 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02003051 * ssl_set_bio() changed signature (contexts merged, order switched, one
3052 additional callback for read-with-timeout).
3053 * The following functions have been introduced and must be used in callback
3054 implementations (SNI, PSK) instead of their *conf counterparts:
3055 mbedtls_ssl_set_hs_own_cert()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02003056 mbedtls_ssl_set_hs_ca_chain()
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01003057 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003058 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01003059 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02003060 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
3061 pointer, parameters reordered).
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02003062 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
3063 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003064 * The SSL debug callback gained two new arguments (file name, line number).
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003065 * Debug modes were removed.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003066 * mbedtls_ssl_conf_truncated_hmac() now returns void.
3067 * mbedtls_memory_buffer_alloc_init() now returns void.
3068 * X.509 verification flags are now an uint32_t. Affect the signature of:
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01003069 mbedtls_ssl_get_verify_result()
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02003070 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01003071 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
3072 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
3073 * The following functions changed prototype to avoid an in-out length
3074 parameter:
3075 mbedtls_base64_encode()
3076 mbedtls_base64_decode()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02003077 mbedtls_mpi_write_string()
3078 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02003079 * In the NET module, all "int" and "int *" arguments for file descriptors
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02003080 changed type to "mbedtls_net_context *".
3081 * net_accept() gained new arguments for the size of the client_ip buffer.
Antonin Décimo36e89b52019-01-23 15:24:37 +01003082 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02003083 return void.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02003084 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02003085 ecdsa_write_signature_det() was deprecated.
3086 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01003087 * Last argument of x509_crt_check_key_usage() and
3088 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
3089 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01003090 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02003091 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
3092 strings; use the new *_len variables instead of strlen().
3093 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00003094 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02003095 length parameter to include the terminating null byte for PEM input.
3096 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02003097 * calloc() is now used instead of malloc() everywhere. API of platform
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003098 layer and the memory_buffer_alloc module changed accordingly.
3099 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02003100 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
3101 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003102 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
3103 in config.h
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02003104 * net_connect() and net_bind() have a new 'proto' argument to choose
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003105 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
3106 Their 'port' argument type is changed to a string.
3107 * Some constness fixes
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003108
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02003109Removals
3110 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02003111 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
3112 mbedtls_ecp_muladd().
3113 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02003114 (use generic functions from md.h)
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02003115 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02003116 waiting function.
3117 * Removed test DHM parameters from the test certs module.
3118 * Removed the PBKDF2 module (use PKCS5).
3119 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
3120 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
3121 * Removed openssl.h (very partial OpenSSL compatibility layer).
3122 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
3123 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
3124 been removed (compiler is required to support 32-bit operations).
3125 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
3126 * Removed test program o_p_test, the script compat.sh does more.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003127 * Removed test program ssl_test, superseded by ssl-opt.sh.
3128 * Removed helper script active-config.pl
3129
3130New deprecations
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02003131 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003132 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003133
3134Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02003135 * Renamed a few headers to include _internal in the name. Those headers are
3136 not supposed to be included by users.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003137 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
3138 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01003139 * Changed cipher_base_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02003140 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
3141 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01003142 * Removed r and s from ecdsa_context
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003143 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02003144
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003145Default behavior changes
3146 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003147 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
3148 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01003149 * Support for receiving SSLv2 ClientHello is now disabled by default at
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02003150 compile time.
3151 * The default authmode for SSL/TLS clients is now REQUIRED.
3152 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01003153 enabled in the default configuration, this is only noticeable if using a
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003154 custom config.h
3155 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01003156 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02003157 chain verification.
3158 * Negotiation of truncated HMAC is now disabled by default on server too.
3159 * The following functions are now case-sensitive:
3160 mbedtls_cipher_info_from_string()
3161 mbedtls_ecp_curve_info_from_name()
3162 mbedtls_md_info_from_string()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01003163 mbedtls_ssl_ciphersuite_from_string()
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02003164 mbedtls_version_check_feature()
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02003165
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02003166Requirement changes
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01003167 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00003168 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003169 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003170
3171API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02003172 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
3173 new prototype, and mbedtls_ssl_set_read_timeout().
3174 * The following functions now return void:
3175 mbedtls_ssl_conf_transport()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02003176 mbedtls_ssl_conf_max_version()
3177 mbedtls_ssl_conf_min_version()
3178 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
3179 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02003180 an example implementation, see mbedtls_timing_delay_context and
3181 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01003182 * With UDP sockets, it is no longer necessary to call net_bind() again
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003183 after a successful net_accept().
3184
3185Changes
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02003186 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
3187 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01003188 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003189 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
3190
3191= mbed TLS 1.3 branch
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02003192
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01003193Security
3194 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02003195 extendedKeyUsage on the leaf certificate was lost (results not accessible
3196 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003197 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3198 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02003199
3200Features
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02003201 * Improve ECC performance by using more efficient doubling formulas
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02003202 (contributed by Peter Dettman).
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02003203 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01003204 * Add support for reading DH parameters with privateValueLength included
3205 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003206 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
3207 * Add support for id-at-uniqueIdentifier in X.509 names.
3208 * Add support for overriding snprintf() (except on Windows) and exit() in
3209 the platform layer.
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00003210 * Add an option to use macros instead of function pointers in the platform
3211 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00003212 * Improved Makefiles for Windows targets by fixing library targets and making
3213 cross-compilation easier (thanks to Alon Bar-Lev).
3214 * The benchmark program also prints heap usage for public-key primitives
3215 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
3216 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
3217 speed and RAM (heap only for now) usage.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003218 * New script memory.sh helps measuring the ROM and RAM requirements of two
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003219 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003220 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01003221 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003222 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
3223 errors on use of deprecated functions.
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01003224
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01003225Bugfix
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01003226 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
3227 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02003228 * Fix bug in entropy.c when THREADING_C is also enabled that caused
3229 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02003230 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
3231 once on the same context.
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02003232 * Fix bug in ssl_mail_client when password is longer that username (found
3233 by Bruno Pape).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02003234 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
3235 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02003236 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
3237 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02003238 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02003239 doing it at runtime (using uname) rather that compile time.
3240 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
3241 * Fix potential NULL pointer dereference (not trigerrable remotely) when
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02003242 ssl_write() is called before the handshake is finished (introduced in
3243 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01003244 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01003245 rejected.
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00003246 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3247 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00003248 * Fix hardclock() (only used in the benchmarking program) with some
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00003249 versions of mingw64 (found by kxjhlele).
3250 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00003251 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00003252 platforms.
3253 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
3254 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00003255 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02003256 in 1.3.10).
3257 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02003258 * Add missing dependency on SHA-256 in some x509 programs (reported by
3259 Gergely Budai).
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00003260 * Fix bug related to ssl_set_curves(): the client didn't check that the
3261 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02003262
3263Changes
3264 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02003265 * Remove potential sources of timing variations (some contributed by Pascal
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02003266 Junod).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02003267 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003268 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00003269 * compat-1.2.h and openssl.h are deprecated.
3270 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02003271 more flexible (warning: OFLAGS is not used any more) (see the README)
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00003272 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00003273 * ssl_set_own_cert() no longer calls pk_check_pair() since the
3274 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00003275 * Move from SHA-1 to SHA-256 in example programs using signatures
3276 (suggested by Thorsten Mühlfelder).
3277 * Remove some unneeded inclusions of header files from the standard library
3278 "minimize" others (eg use stddef.h if only size_t is needed).
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00003279 * Change #include lines in test files to use double quotes instead of angle
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02003280 brackets for uniformity with the rest of the code.
Paul Bakkerdaae3b72015-02-08 15:49:54 +01003281 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003282
3283= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00003284Security
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003285 * NULL pointer dereference in the buffer-based allocator when the buffer is
3286 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003287 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003288 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003289 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003290 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01003291 client certificate) (found using Codenomicon Defensics).
3292 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3293 (TLS server is not affected if it doesn't ask for a client certificate)
3294 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01003295 * Fix potential stack overflow while parsing crafted X.509 certificates
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00003296 (TLS server is not affected if it doesn't ask for a client certificate)
3297 (found using Codenomicon Defensics).
3298 * Fix timing difference that could theoretically lead to a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01003299 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003300 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003301
3302Features
3303 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003304 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01003305 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01003306 * Add function pk_check_pair() to test if public and private keys match.
3307 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01003308 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01003309 length of an X.509 verification chain.
Paul Bakker6152b022015-04-14 15:00:09 +02003310 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01003311 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01003312 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
3313 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003314 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01003315 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00003316 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
3317 while using the default ciphersuite list.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01003318 * Added new error codes and debug messages about selection of
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003319 ciphersuite/certificate.
3320
3321Bugfix
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01003322 * Stack buffer overflow if ctr_drbg_update() is called with too large
3323 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003324 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
3325 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003326 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01003327 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01003328 by Julian Ospald).
3329 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00003330 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
3331 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00003332 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00003333 Peter Vaskovic).
3334 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00003335 * ssl_get_verify_result() now works even if the handshake was aborted due
3336 to a failed verification (found by Fredrik Axelsson).
3337 * Skip writing and parsing signature_algorithm extension if none of the
3338 key exchanges enabled needs certificates. This fixes a possible interop
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00003339 issue with some servers when a zero-length extension was sent. (Reported
3340 by Peter Dettman.)
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01003341 * On a 0-length input, base64_encode() did not correctly set output length
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01003342 (found by Hendrik van den Boogaard).
3343
3344Changes
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01003345 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01003346 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01003347 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01003348 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01003349 * Forbid repeated extensions in X.509 certificates.
3350 * debug_print_buf() now prints a text view in addition to hexadecimal.
Paul Bakkere522d0f2015-01-14 16:12:48 +01003351 * A specific error is now returned when there are ciphersuites in common
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01003352 but none of them is usable due to external factors such as no certificate
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01003353 with a suitable (extended)KeyUsage or curve or no PSK set.
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01003354 * It is now possible to disable negotiation of truncated HMAC server-side
3355 at runtime with ssl_set_truncated_hmac().
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00003356 * Example programs for SSL client and server now disable SSLv3 by default.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01003357 * Example programs for SSL client and server now disable RC4 by default.
Paul Bakker9eac4f72014-10-20 13:56:15 +02003358 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003359
3360= PolarSSL 1.3.9 released 2014-10-20
3361Security
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003362 * Lowest common hash was selected from signature_algorithms extension in
Paul Bakkerb082bb52014-10-20 13:37:51 +02003363 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
3364 * Remotely-triggerable memory leak when parsing some X.509 certificates
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02003365 (server is not affected if it doesn't ask for a client certificate)
Paul Bakkerb082bb52014-10-20 13:37:51 +02003366 (found using Codenomicon Defensics).
3367 * Remotely-triggerable memory leak when parsing crafted ClientHello
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02003368 (not affected if ECC support was compiled out) (found using Codenomicon
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003369 Defensics).
3370
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02003371Bugfix
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02003372 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02003373 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02003374 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02003375 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3376 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02003377 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003378 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
3379 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02003380 * ssl_read() could return non-application data records on server while
3381 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02003382 * Server-initiated renegotiation would fail with non-blocking I/O if the
3383 write callback returned WANT_WRITE when requesting renegotiation.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02003384 * ssl_close_notify() could send more than one message in some circumstances
Paul Bakker5a5fa922014-09-26 14:53:04 +02003385 with non-blocking I/O.
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02003386 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02003387 * x509_crt_parse() did not increase total_failed on PEM error
3388 * Fix compile error with armcc in mpi_is_prime()
Paul Bakker8dcb2d72014-08-08 12:22:30 +02003389 * Fix potential bad read in parsing ServerHello (found by Adrien
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003390 Vialletelle).
3391
3392Changes
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02003393 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
3394 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02003395 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
3396 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02003397 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
3398 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02003399 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3400 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02003401 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02003402 RSA keys.
3403 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02003404 * X.509 certificates with more than one AttributeTypeAndValue per
Paul Bakker1910aa72014-07-11 11:28:56 +02003405 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02003406
3407= PolarSSL 1.3.8 released 2014-07-11
3408Security
3409 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3410 It was possible to crash the server (and client) using crafted messages
Paul Bakkerc6ece492014-05-22 15:45:03 +02003411 when a GCM suite was chosen.
3412
3413Features
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02003414 * Add CCM module and cipher mode to Cipher Layer
3415 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02003416 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02003417 modules (certificates, CRLs and CSRs).
3418 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02003419 * Add example config.h for PSK with CCM, optimized for low RAM usage.
3420 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Paul Bakker23647b42014-07-04 15:00:12 +02003421 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
3422 from the default list (inactive by default).
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02003423 * Add server-side enforcement of sent renegotiation requests
3424 (ssl_set_renegotiation_enforced())
Paul Bakkerc6ece492014-05-22 15:45:03 +02003425 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
Paul Bakker863989b2014-06-12 21:49:01 +02003426 ciphersuites to use and save some memory if the list is small.
3427
3428Changes
Paul Bakker34617722014-06-13 17:20:13 +02003429 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
3430 required on some platforms (e.g. OpenBSD)
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02003431 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02003432 against unwanted compiler optimizations
3433 * md_list() now returns hashes strongest first
Paul Bakker28476e22014-07-01 15:59:04 +02003434 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
3435 strongest offered by client.
Paul Bakker863989b2014-06-12 21:49:01 +02003436 * All public contexts have _init() and _free() functions now for simpler
Paul Bakker5593f7c2014-05-06 10:29:28 +02003437 usage pattern
3438
Paul Bakker1ebc0c52014-05-22 15:47:58 +02003439Bugfix
Paul Bakkerdff31392014-05-22 15:06:41 +02003440 * Fix in debug_print_msg()
Paul Bakker0f651c72014-05-22 15:12:19 +02003441 * Enforce alignment in the buffer allocator even if buffer is not aligned
3442 * Remove less-than-zero checks on unsigned numbers
Paul Bakker49033ba2014-06-12 21:46:13 +02003443 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3444 size (found by TrustInSoft)
3445 * Fix WSAStartup() return value check (found by Peter Vaskovic)
3446 * Other minor issues (found by Peter Vaskovic)
Paul Bakker3c38f292014-06-13 17:37:46 +02003447 * Fix symlink command for cross compiling with CMake (found by Andre
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003448 Heinecke)
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02003449 * Fix DER output of gen_key app (found by Gergely Budai)
3450 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02003451 use with some ciphersuites and versions (RC4 in all versions, CBC with
3452 versions < TLS 1.1).
3453 * Very large records using more than 224 bytes of padding were incorrectly
3454 rejected with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02003455 * Very large records using less padding could cause a buffer overread of up
3456 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02003457 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
3458 been removed in 1.3.6.)
3459 * Restore ability to locally trust a self-signed cert that is not a proper
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07003460 CA for use as an end entity certificate. (This had been removed in
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02003461 1.3.6.)
3462 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02003463 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3464 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02003465 * Fix off-by-one error in parsing Supported Point Format extension that
3466 caused some handshakes to fail.
3467 * Fix possible miscomputation of the premaster secret with DHE-PSK key
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02003468 exchange that caused some handshakes to fail with other implementations.
Paul Bakkerd5983182014-07-04 13:50:31 +02003469 (Failure rate <= 1/255 with common DHM moduli.)
3470 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakker6c343d72014-07-10 14:36:19 +02003471 * Fix base64_decode() to return and check length correctly (in case of
3472 tight buffers)
Paul Bakker5593f7c2014-05-06 10:29:28 +02003473 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
Paul Bakker47431b62014-05-02 13:27:13 +02003474 by Hui Dong)
Paul Bakkereaebbd52014-04-25 15:04:14 +02003475
Paul Bakkerc73079a2014-04-25 16:34:30 +02003476= PolarSSL 1.3.7 released on 2014-05-02
3477Features
Paul Bakker0f90d7d2014-04-30 11:49:44 +02003478 * debug_set_log_mode() added to determine raw or full logging
3479 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker92478c32014-04-25 15:18:34 +02003480 * version_check_feature() added to check for compile-time options at
Paul Bakker088c5c52014-04-25 11:11:10 +02003481 run-time
3482
3483Changes
Paul Bakker92478c32014-04-25 15:18:34 +02003484 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
Paul Bakker63844402014-04-30 15:34:12 +02003485 checked and filled in the relevant module headers
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02003486 * Debug module only outputs full lines instead of parts
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02003487 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Paul Bakker088c5c52014-04-25 11:11:10 +02003488 * AES-NI now compiles with "old" assemblers too
Paul Bakkere92f73d2014-04-18 14:08:26 +02003489 * Ciphersuites based on RC4 now have the lowest priority by default
3490
3491Bugfix
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02003492 * Only iterate over actual certificates in ssl_write_certificate_request()
3493 (found by Matthew Page)
Paul Bakkerfdba4682014-04-25 11:48:35 +02003494 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
Paul Bakker61885c72014-04-25 12:59:03 +02003495 Karger)
3496 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakkera7036632014-04-30 10:15:38 +02003497 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
3498 ciphersuites, for full SSL frames of data.
Paul Bakker24f37cc2014-04-30 13:33:35 +02003499 * Improve interoperability by not writing extension length in ClientHello /
Paul Bakkerf96f7b62014-04-30 16:02:38 +02003500 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker33dc46b2014-04-30 16:11:39 +02003501 * rsa_check_pubkey() now allows an E up to N
3502 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02003503 * mpi_fill_random() was creating numbers larger than requested on
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02003504 big-endian platform when size was not an integer number of limbs
Markus Pfeiffera26a0052014-04-22 20:16:15 +00003505 * Fix dependencies issues in X.509 test suite.
Barry K. Nathancf975f52014-04-23 17:40:25 -07003506 * Some parts of ssl_tls.c were compiled even when the module was disabled.
3507 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Paul Bakkere92f73d2014-04-18 14:08:26 +02003508 * Fix detection of Clang on some Apple platforms with CMake
Paul Bakker784b04f2014-04-11 15:33:59 +02003509 (found by Barry K. Nathan)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003510
Paul Bakker27e36d32014-04-08 12:33:37 +02003511= PolarSSL 1.3.6 released on 2014-04-11
3512
Paul Bakker1cfc4582014-04-09 15:25:13 +02003513Features
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003514 * Support for the ALPN SSL extension
Paul Bakker59366212014-04-09 15:55:20 +02003515 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003516 * Enable verification of the keyUsage extension for CA and leaf
3517 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02003518 * Enable verification of the extendedKeyUsage extension
Paul Bakker4984d3c2014-04-04 15:39:37 +02003519 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
3520
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02003521Changes
3522 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02003523 * pk_verify() now returns a specific error code when the signature is valid
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02003524 but shorter than the supplied length.
Paul Bakker4984d3c2014-04-04 15:39:37 +02003525 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003526 * Reject certificates with times not in UTC, per RFC 5280.
3527
3528Security
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02003529 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
3530 (Found by Watson Ladd.)
3531 * The notAfter date of some certificates was no longer checked since 1.3.5.
3532 This affects certificates in the user-supplied chain except the top
Paul Bakker4224bc02014-04-08 14:36:50 +02003533 certificate. If the user-supplied chain contains only one certificates,
3534 it is not affected (ie, its notAfter date is properly checked).
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003535 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003536 TrustInSoft)
3537
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01003538Bugfix
Paul Bakker75a28602014-03-31 12:08:17 +02003539 * The length of various ClientKeyExchange messages was not properly checked.
3540 * Some example server programs were not sending the close_notify alert.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02003541 * Potential memory leak in mpi_exp_mod() when error occurs during
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02003542 calculation of RR.
3543 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02003544 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
3545 Gergely Budai).
Shuo Chen95a0d112014-04-04 21:04:40 -07003546 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
3547 (found by Gergely Budai)
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01003548 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
3549 Shuo Chen).
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01003550 * oid_get_numeric_string() used to truncate the output without returning an
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02003551 error if the output buffer was just 1 byte too small.
3552 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Paul Bakker16300582014-04-11 13:28:43 +02003553 * Calling pk_debug() on an RSA-alt key would segfault.
3554 * 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 +02003555 * Potential buffer overwrite in pem_write_buffer() because of low length
3556 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003557 * EC curves constants, which should be only in ROM since 1.3.3, were also
Paul Bakker96d52652014-03-26 16:55:50 +01003558 stored in RAM due to missing 'const's (found by Gergely Budai).
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003559
3560= PolarSSL 1.3.5 released on 2014-03-26
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003561Features
Paul Bakker6a28e722014-02-06 13:41:55 +01003562 * HMAC-DRBG as a separate module
Paul Bakkerf2561b32014-02-06 15:11:55 +01003563 * Option to set the Curve preference order (disabled by default)
Paul Bakker2ceda572014-02-06 15:55:25 +01003564 * Single Platform compatilibity layer (for memory / printf / fprintf)
3565 * Ability to provide alternate timing implementation
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003566 * Ability to force the entropy module to use SHA-256 as its basis
3567 (POLARSSL_ENTROPY_FORCE_SHA256)
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01003568 * Testing script ssl-opt.sh added for testing 'live' ssl option
Paul Bakker66ff70d2014-03-26 11:54:05 +01003569 interoperability against OpenSSL and PolarSSL
Paul Bakker6a28e722014-02-06 13:41:55 +01003570 * Support for reading EC keys that use SpecifiedECDomain in some cases.
3571 * Entropy module now supports seed writing and reading
3572
Paul Bakker47703a02014-02-06 15:01:20 +01003573Changes
3574 * Deprecated the Memory layer
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01003575 * entropy_add_source(), entropy_update_manual() and entropy_gather()
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01003576 now thread-safe if POLARSSL_THREADING_C defined
3577 * Improvements to the CMake build system, contributed by Julian Ospald.
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003578 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3579 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003580 * Revamped the compat.sh interoperatibility script to include support for
Paul Bakker674e0b02014-03-26 13:26:52 +01003581 testing against GnuTLS
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003582 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003583 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3584
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01003585Security
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003586 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01003587 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01003588 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003589 * Check notBefore timestamp of certificates and CRLs from the future.
Paul Bakker91c61bc2014-03-26 14:06:55 +01003590 * Forbid sequence number wrapping
3591 * Fixed possible buffer overflow with overlong PSK
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003592 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003593 TrustInSoft)
3594
3595Bugfix
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003596 * ecp_gen_keypair() does more tries to prevent failure because of
Paul Bakkercd6d69a2014-02-06 15:43:21 +01003597 statistics
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01003598 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakker3d52ab72014-03-07 10:33:55 +01003599 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01003600 * Fixed version-major intolerance in server
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01003601 * Fixed CMake symlinking on out-of-source builds
Alex Wilson73491422014-03-06 00:04:09 +10003602 * Fixed dependency issues in test suite
3603 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003604 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3605 Alex Wilson.)
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01003606 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003607 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003608 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003609 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01003610 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003611 client certificate.
Paul Bakker3d6504a2014-03-17 13:41:51 +01003612 * ssl_srv was leaking memory when client presented a timed out ticket
3613 containing a client certificate
Paul Bakker77f4f392014-03-26 15:28:55 +01003614 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3615 out_ctr failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01003616 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
Paul Bakker5fff23b2014-03-26 15:34:54 +01003617 of one of them failed
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003618 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker2aca2412014-01-27 11:49:46 +01003619 * x509_get_current_time() uses localtime_r() to prevent thread issues
Paul Bakker3eb96732014-01-22 13:08:19 +01003620
Paul Bakker0ac99ca2014-01-22 13:08:44 +01003621= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker5862eee2014-01-22 14:18:03 +01003622Features
Paul Bakker556efba2014-01-24 15:38:12 +01003623 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01003624 * Support for RIPEMD-160
Paul Bakker3eb96732014-01-22 13:08:19 +01003625 * Support for AES CFB8 mode
3626 * Support for deterministic ECDSA (RFC 6979)
3627
3628Bugfix
Paul Bakkerd75ba402014-01-24 16:11:17 +01003629 * Potential memory leak in bignum_selftest()
Paul Bakkerb84582b2014-01-27 12:23:43 +01003630 * Replaced expired test certificate
3631 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01003632 * net module handles timeouts on blocking sockets better (found by Tilman
3633 Sauerbeck)
3634 * Assembly format fixes in bn_mul.h
Paul Bakkerb84582b2014-01-27 12:23:43 +01003635
3636Security
Paul Bakker3eb96732014-01-22 13:08:19 +01003637 * Missing MPI_CHK calls added around unguarded mpi calls (found by
Paul Bakker5bc07a32013-12-31 10:57:44 +01003638 TrustInSoft)
Paul Bakker014f1432013-12-02 14:54:01 +01003639
3640= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker9dc53a92013-12-02 14:55:28 +01003641Features
3642 * EC key generation support in gen_key app
Paul Bakker48d78a52013-12-05 16:11:38 +01003643 * Support for adhering to client ciphersuite order preference
Paul Bakkerfdf94692013-12-17 13:09:31 +01003644 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker5a607d22013-12-17 14:33:42 +01003645 * Support for Curve25519
Paul Bakker23116fd2013-12-30 14:09:47 +01003646 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakkerf9c49532013-12-19 15:40:58 +01003647 * Support for IPv6 in the NET module
Paul Bakker014f1432013-12-02 14:54:01 +01003648 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakker7aa03752013-11-26 17:37:31 +01003649 * SSL Pthread-based server example added (ssl_pthread_server)
3650
3651Changes
3652 * gen_prime() speedup
Paul Bakkerc3d0d072013-12-02 14:50:49 +01003653 * Speedup of ECP multiplication operation
Paul Bakker4040d7e2013-12-02 14:52:57 +01003654 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerb14817d2013-12-02 22:03:23 +01003655 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker5ab68ba2013-12-17 13:10:48 +01003656 * More constant-time checks in the RSA module
Paul Bakkerc7387912013-12-31 10:32:50 +01003657 * Split off curves from ecp.c into ecp_curves.c
Paul Bakkera8fd3e32013-12-31 11:54:08 +01003658 * Curves are now stored fully in ROM
Paul Bakker7aa03752013-11-26 17:37:31 +01003659 * Memory usage optimizations in ECP module
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003660 * Removed POLARSSL_THREADING_DUMMY
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01003661
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003662Bugfix
Paul Bakkera9a028e2013-11-21 17:31:06 +01003663 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakker7aa03752013-11-26 17:37:31 +01003664 * Fixed X.509 hostname comparison (with non-regular characters)
3665 * SSL now gracefully handles missing RNG
Paul Bakker6f0636a2013-12-16 15:24:05 +01003666 * Missing defines / cases for RSA_PSK key exchange
Paul Bakkerf70fe812013-12-16 16:43:10 +01003667 * crypt_and_hash app checks MAC before final decryption
Paul Bakker1a56fc92013-12-19 13:51:24 +01003668 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakker6ea1a952013-12-31 11:16:03 +01003669 * Memory leak in benchmark application
3670 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6992eb72013-12-31 11:35:16 +01003671 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3672 TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003673 * Fixed potential overflow in certificate size verification in
Paul Bakker956c9e02013-12-19 14:42:28 +01003674 ssl_write_certificate() (found by TrustInSoft)
3675
3676Security
3677 * Possible remotely-triggered out-of-bounds memory access fixed (found by
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003678 TrustInSoft)
Paul Bakker08bb1872013-10-28 14:03:26 +01003679
3680= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker3f917e22013-10-28 14:16:59 +01003681Features
Paul Bakker16421222013-10-28 14:37:09 +01003682 * PK tests added to test framework
Paul Bakker08bb1872013-10-28 14:03:26 +01003683 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker7bc745b2013-10-28 14:39:49 +01003684 * Support for Camellia-GCM mode and ciphersuites
3685
Paul Bakkere1121b62013-10-31 14:37:37 +01003686Changes
Paul Bakker7b0be682013-10-29 14:24:37 +01003687 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003688 * Value comparisons in SSL layer are now constant-time
Paul Bakker7bc745b2013-10-28 14:39:49 +01003689 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakker677377f2013-10-28 12:54:26 +01003690 * SSL Renegotiation was refactored
Paul Bakker16421222013-10-28 14:37:09 +01003691
Paul Bakker677377f2013-10-28 12:54:26 +01003692Bugfix
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003693 * More stringent checks in cipher layer
Paul Bakker68037da2013-10-28 14:02:40 +01003694 * Server does not send out extensions not advertised by client
Paul Bakker50dc8502013-10-28 21:19:10 +01003695 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker93c6aa42013-10-28 22:28:09 +01003696 * Misc fixes and additions to dependency checks
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003697 * Const correctness
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003698 * cert_write with selfsign should use issuer_name as subject_name
Paul Bakkere1121b62013-10-31 14:37:37 +01003699 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakker677377f2013-10-28 12:54:26 +01003700 * Defines to handle UEFI environment under MSVC
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003701 * Server-side initiated renegotiations send HelloRequest
Paul Bakkerb799dec2013-10-11 10:03:27 +02003702
3703= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakker376e8152013-10-15 12:44:23 +02003704Features
Paul Bakkerf34673e2013-10-15 12:46:17 +02003705 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakkerb799dec2013-10-11 10:03:27 +02003706 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerddba8822013-10-11 09:21:56 +02003707 * Support for RSA-PSK key-exchange and ciphersuites
3708
Paul Bakker16770332013-10-11 09:59:44 +02003709Changes
Paul Bakkerbe089b02013-10-14 15:51:50 +02003710 * RSA blinding locks for a smaller amount of time
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003711 * TLS compression only allocates working buffer once
Paul Bakkerddba8822013-10-11 09:21:56 +02003712 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3713 * config.h is more script-friendly
3714
3715Bugfix
3716 * Missing MSVC defines added
Paul Bakkerfcc17212013-10-11 09:36:52 +02003717 * Compile errors with POLARSSL_RSA_NO_CRT
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003718 * Header files with 'polarssl/'
Paul Bakker4aa40d42013-10-11 10:49:24 +02003719 * Const correctness
Paul Bakkerb7c13122013-10-11 10:51:32 +02003720 * Possible naming collision in dhm_context
Paul Bakker5191e922013-10-11 10:54:28 +02003721 * Better support for MSVC
Paul Bakkerddba8822013-10-11 09:21:56 +02003722 * threading_set_alt() name
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003723 * Added missing x509write_crt_set_version()
Paul Bakker41c83d32013-03-20 14:39:14 +01003724
3725= PolarSSL 1.3.0 released on 2013-10-01
3726Features
3727 * Elliptic Curve Cryptography module added
3728 * Elliptic Curve Diffie Hellman module added
Paul Bakkerc8676782013-08-28 12:15:11 +02003729 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3730 (ECDHE-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003731 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003732 (ECDSA-based ciphersuites)
Paul Bakker6e339b52013-07-03 13:37:05 +02003733 * Ability to specify allowed ciphersuites based on the protocol version.
3734 * PSK and DHE-PSK based ciphersuites added
Paul Bakker2466d932013-09-28 14:40:38 +02003735 * Memory allocation abstraction layer added
Paul Bakker5ad403f2013-09-18 21:21:30 +02003736 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakkerf85778e2013-07-19 14:55:25 +02003737 * Threading abstraction layer added (dummy / pthread / alternate)
3738 * Public Key abstraction layer added
3739 * Parsing Elliptic Curve keys
3740 * Parsing Elliptic Curve certificates
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003741 * Support for max_fragment_length extension (RFC 6066)
3742 * Support for truncated_hmac extension (RFC 6066)
Paul Bakker936539a2013-08-14 13:49:20 +02003743 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
Paul Bakkerca174fe2013-08-28 16:31:30 +02003744 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
3745 * Support for session tickets (RFC 5077)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003746 * Certificate Request (CSR) generation with extensions (key_usage,
3747 ns_cert_type)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003748 * X509 Certificate writing with extensions (basic_constraints,
Paul Bakker8b817dc2013-09-25 18:03:58 +02003749 issuer_key_identifier, etc)
Darryl Green11999bb2018-03-13 15:22:58 +00003750 * Optional blinding for RSA, DHM and EC
Paul Bakker41c83d32013-03-20 14:39:14 +01003751 * Support for multiple active certificate / key pairs in SSL servers for
Paul Bakker9b5798d2013-03-13 13:53:00 +01003752 the same host (Not to be confused with SNI!)
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003753
3754Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003755 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3756 individually
Paul Bakker9b5798d2013-03-13 13:53:00 +01003757 * Introduced separate SSL Ciphersuites module that is based on
3758 Cipher and MD information
Paul Bakkerc70b9822013-04-07 22:00:46 +02003759 * Internals for SSL module adapted to have separate IV pointer that is
3760 dynamically set (Better support for hardware acceleration)
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003761 * Moved all OID functionality to a separate module. RSA function
Paul Bakker2fbefde2013-06-29 16:01:15 +02003762 prototypes for the RSA sign and verify functions changed as a result
3763 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker0be444a2013-08-27 21:55:01 +02003764 * Client and server now filter sent and accepted ciphersuites on minimum
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003765 and maximum protocol version
3766 * Ability to disable server_name extension (RFC 6066)
Paul Bakker9e36f042013-06-30 14:34:05 +02003767 * Renamed error_strerror() to the less conflicting polarssl_strerror()
Paul Bakker548957d2013-08-30 10:30:02 +02003768 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker45f21c72013-09-18 15:33:49 +02003769 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
3770 * All RSA operations require a random generator for blinding purposes
Paul Bakker5ad403f2013-09-18 21:21:30 +02003771 * X509 core refactored
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003772 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
3773 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003774 * Support faulty X509 v1 certificates with extensions
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003775 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker73d44312013-05-22 13:56:26 +02003776
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003777Bugfix
Paul Bakker1e6a1752013-07-26 14:10:22 +02003778 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakker003dbad2013-09-09 17:26:14 +02003779 * zlib compression/decompression skipped on empty blocks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003780 * Support for AIX header locations in net.c module
Paul Bakkeraab30c12013-08-30 11:00:25 +02003781 * Fixed file descriptor leaks
3782
3783Security
3784 * RSA blinding on CRT operations to counter timing attacks
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003785 (found by Cyril Arnaud and Pierre-Alain Fouque)
3786
3787
3788= Version 1.2.14 released 2015-05-??
3789
3790Security
3791 * Fix potential invalid memory read in the server, that allows a client to
3792 crash it remotely (found by Caj Larsson).
3793 * Fix potential invalid memory read in certificate parsing, that allows a
3794 client to crash the server remotely if client authentication is enabled
3795 (found using Codenomicon Defensics).
3796 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3797 https://dl.acm.org/citation.cfm?id=2714625
3798
3799Bugfix
3800 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3801 * Fix hardclock() (only used in the benchmarking program) with some
3802 versions of mingw64 (found by kxjhlele).
3803 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3804 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3805 platforms (found with Coverity Scan).
3806
3807= Version 1.2.13 released 2015-02-16
3808Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3809 this will be made in the 1.2 branch at this point.
3810
3811Security
3812 * Fix remotely-triggerable uninitialised pointer dereference caused by
3813 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3814 for a client certificate) (found using Codenomicon Defensics).
3815 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3816 (TLS server is not affected if it doesn't ask for a client certificate)
3817 (found using Codenomicon Defensics).
3818 * Fix potential stack overflow while parsing crafted X.509 certificates
3819 (TLS server is not affected if it doesn't ask for a client certificate)
3820 found using Codenomicon Defensics).
3821 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3822 (TLS server is not affected if it doesn't ask for a client certificate).
3823
3824Bugfix
3825 * Fix potential undefined behaviour in Camellia.
3826 * Fix memory leaks in PKCS#5 and PKCS#12.
3827 * Stack buffer overflow if ctr_drbg_update() is called with too large
3828 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3829 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3830 in 1.2.12).
3831 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3832 Peter Vaskovic).
3833 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3834 * ssl_get_verify_result() now works even if the handshake was aborted due
3835 to a failed verification (found by Fredrik Axelsson).
3836 * Skip writing and parsing signature_algorithm extension if none of the
3837 key exchanges enabled needs certificates. This fixes a possible interop
3838 issue with some servers when a zero-length extension was sent. (Reported
3839 by Peter Dettman.)
3840 * On a 0-length input, base64_encode() did not correctly set output length
3841 (found by Hendrik van den Boogaard).
3842
3843Changes
3844 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3845 * Forbid repeated extensions in X.509 certificates.
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003846 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3847 length of an X.509 verification chain (default = 8).
3848= Version 1.2.12 released 2014-10-24
3849
3850Security
3851 * Remotely-triggerable memory leak when parsing some X.509 certificates
3852 (server is not affected if it doesn't ask for a client certificate).
3853 (Found using Codenomicon Defensics.)
3854
3855Bugfix
3856 * Fix potential bad read in parsing ServerHello (found by Adrien
3857 Vialletelle).
3858 * ssl_close_notify() could send more than one message in some circumstances
3859 with non-blocking I/O.
3860 * x509_crt_parse() did not increase total_failed on PEM error
3861 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3862 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3863 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3864 * ssl_read() could return non-application data records on server while
3865 renegotation was pending, and on client when a HelloRequest was received.
3866 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3867
3868Changes
3869 * X.509 certificates with more than one AttributeTypeAndValue per
3870 RelativeDistinguishedName are not accepted any more.
3871 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3872 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003873 * Accept spaces at end of line or end of buffer in base64_decode().
3874
3875= Version 1.2.11 released 2014-07-11
3876Features
3877 * Entropy module now supports seed writing and reading
3878
3879Changes
3880 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3881 * Improvements to the CMake build system, contributed by Julian Ospald.
3882 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3883 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3884 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3885 * Use UTC time to check certificate validity.
3886 * Reject certificates with times not in UTC, per RFC 5280.
3887 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3888 against unwanted compiler optimizations
3889
3890Security
3891 * Forbid change of server certificate during renegotiation to prevent
3892 "triple handshake" attack when authentication mode is optional (the
3893 attack was already impossible when authentication is required).
3894 * Check notBefore timestamp of certificates and CRLs from the future.
3895 * Forbid sequence number wrapping
3896 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3897 TrustInSoft)
3898 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3899 It was possible to crash the server (and client) using crafted messages
3900 when a GCM suite was chosen.
3901
3902Bugfix
3903 * Fixed X.509 hostname comparison (with non-regular characters)
3904 * SSL now gracefully handles missing RNG
3905 * crypt_and_hash app checks MAC before final decryption
3906 * Fixed x509_crt_parse_path() bug on Windows platforms
3907 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3908 TrustInSoft)
3909 * Fixed potential overflow in certificate size verification in
3910 ssl_write_certificate() (found by TrustInSoft)
3911 * Fix ASM format in bn_mul.h
3912 * Potential memory leak in bignum_selftest()
3913 * Replaced expired test certificate
3914 * ssl_mail_client now terminates lines with CRLF, instead of LF
3915 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3916 * Fixed testing with out-of-source builds using cmake
3917 * Fixed version-major intolerance in server
3918 * Fixed CMake symlinking on out-of-source builds
3919 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3920 Alex Wilson.)
3921 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3922 out_ctr failed
3923 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3924 of one of them failed
3925 * x509_get_current_time() uses localtime_r() to prevent thread issues
3926 * Some example server programs were not sending the close_notify alert.
3927 * Potential memory leak in mpi_exp_mod() when error occurs during
3928 calculation of RR.
3929 * Improve interoperability by not writing extension length in ClientHello
3930 when no extensions are present (found by Matthew Page)
3931 * rsa_check_pubkey() now allows an E up to N
3932 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
3933 * mpi_fill_random() was creating numbers larger than requested on
3934 big-endian platform when size was not an integer number of limbs
3935 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
3936 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3937 size (found by TrustInSoft)
3938 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
3939 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3940 interpret semicolons as comment delimiters (found by Barry K. Nathan).
3941 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
3942 * Fix base64_decode() to return and check length correctly (in case of
Paul Bakker3a2c0562013-10-07 16:22:05 +02003943 tight buffers)
3944
3945= Version 1.2.10 released 2013-10-07
3946Changes
3947 * Changed RSA blinding to a slower but thread-safe version
3948
3949Bugfix
3950 * Fixed memory leak in RSA as a result of introduction of blinding
3951 * Fixed ssl_pkcs11_decrypt() prototype
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003952 * Fixed MSVC project files
Paul Bakkerc13aab12013-09-26 10:12:19 +02003953
3954= Version 1.2.9 released 2013-10-01
3955Changes
3956 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
3957
3958Bugfix
3959 * Fixed potential memory leak when failing to resume a session
3960 * Fixed potential file descriptor leaks (found by Remi Gacogne)
3961 * Minor fixes
3962
3963Security
3964 * Fixed potential heap buffer overflow on large hostname setting
3965 * Fixed potential negative value misinterpretation in load_file()
3966 * RSA blinding on CRT operations to counter timing attacks
Paul Bakkerde656232013-06-24 19:07:34 +02003967 (found by Cyril Arnaud and Pierre-Alain Fouque)
3968
3969= Version 1.2.8 released 2013-06-19
3970Features
3971 * Parsing of PKCS#8 encrypted private key files
3972 * PKCS#12 PBE and derivation functions
3973 * Centralized module option values in config.h to allow user-defined
3974 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
3975
3976Changes
3977 * HAVEGE random generator disabled by default
3978 * Internally split up x509parse_key() into a (PEM) handler function
3979 and specific DER parser functions for the PKCS#1 and unencrypted
3980 PKCS#8 private key formats
Darryl Green11999bb2018-03-13 15:22:58 +00003981 * Added mechanism to provide alternative implementations for all
Paul Bakkerde656232013-06-24 19:07:34 +02003982 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
3983 config.h)
3984 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
3985 old PBKDF2 module
3986
3987Bugfix
3988 * Secure renegotiation extension should only be sent in case client
3989 supports secure renegotiation
3990 * Fixed offset for cert_type list in ssl_parse_certificate_request()
3991 * Fixed const correctness issues that have no impact on the ABI
3992 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00003993 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakkerde656232013-06-24 19:07:34 +02003994 instead of the x509parse_crt() wrapper that can also parse PEM
3995 certificates
3996 * x509parse_crtpath() is now reentrant and uses more portable stat()
3997 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
3998 * Fixed values for 2-key Triple DES in cipher layer
3999 * ssl_write_certificate_request() can handle empty ca_chain
4000
4001Security
4002 * A possible DoS during the SSL Handshake, due to faulty parsing of
4003 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4004
4005= Version 1.2.7 released 2013-04-13
4006Features
4007 * Ability to specify allowed ciphersuites based on the protocol version.
4008
4009Changes
4010 * Default Blowfish keysize is now 128-bits
4011 * Test suites made smaller to accommodate Raspberry Pi
4012
4013Bugfix
4014 * Fix for MPI assembly for ARM
Paul Bakker90f042d2013-03-11 11:38:44 +01004015 * GCM adapted to support sizes > 2^29
Paul Bakkerc0463502013-02-14 11:19:38 +01004016
4017= Version 1.2.6 released 2013-03-11
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01004018Bugfix
4019 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakkere3e4a592013-02-28 10:20:53 +01004020 * Corrected GCM counter incrementation to use only 32-bits instead of
Paul Bakker37286a52013-03-06 16:55:11 +01004021 128-bits (found by Yawning Angel)
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01004022 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakkerc0463502013-02-14 11:19:38 +01004023 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerb3869132013-02-28 17:21:01 +01004024 * Fixed assembly code for ARM (Thumb and regular) for some compilers
4025
4026Changes
4027 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
Paul Bakkera43231c2013-02-28 17:33:49 +01004028 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
4029 PKCS#1 v2.1 functions
Paul Bakker78a8c712013-03-06 17:01:52 +01004030 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
4031 or rsa_rsaes_oaep_decrypt()
Paul Bakkere81beda2013-03-06 17:40:46 +01004032 * Re-added handling for SSLv2 Client Hello when the define
4033 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkerb3869132013-02-28 17:21:01 +01004034 * The SSL session cache module (ssl_cache) now also retains peer_cert
Paul Bakkere47b34b2013-02-27 14:48:00 +01004035 information (not the entire chain)
4036
4037Security
Paul Bakker8804f692013-02-28 18:06:26 +01004038 * Removed further timing differences during SSL message decryption in
4039 ssl_decrypt_buf()
4040 * Removed timing differences due to bad padding from
Paul Bakkere47b34b2013-02-27 14:48:00 +01004041 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakkerc7a2da42013-02-02 19:23:57 +01004042 operations
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004043
4044= Version 1.2.5 released 2013-02-02
Paul Bakkerd66f0702013-01-31 16:57:45 +01004045Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004046 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakker40865c82013-01-31 17:13:13 +01004047 * Debug messages about padding errors during SSL message decryption are
4048 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakkera35aa542013-03-06 17:06:21 +01004049 * Sending of security-relevant alert messages that do not break
Paul Bakker8fe40dc2013-02-02 12:43:08 +01004050 interoperability can be switched on/off with the flag
Paul Bakker45829992013-01-03 14:52:21 +01004051 POLARSSL_SSL_ALL_ALERT_MESSAGES
4052
4053Security
4054 * Removed timing differences during SSL message decryption in
Paul Bakker14c56a32013-01-25 17:11:37 +01004055 ssl_decrypt_buf() due to badly formatted padding
Paul Bakker1961b702013-01-25 14:49:24 +01004056
Paul Bakker68884e32013-01-07 18:20:04 +01004057= Version 1.2.4 released 2013-01-25
4058Changes
Paul Bakker1961b702013-01-25 14:49:24 +01004059 * More advanced SSL ciphersuite representation and moved to more dynamic
4060 SSL core
Paul Bakker40628ba2013-01-03 10:50:31 +01004061 * Added ssl_handshake_step() to allow single stepping the handshake process
4062
Paul Bakker21dca692013-01-03 11:41:08 +01004063Bugfix
Paul Bakker9c94cdd2013-01-22 13:45:33 +01004064 * Memory leak when using RSA_PKCS_V21 operations fixed
4065 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker40628ba2013-01-03 10:50:31 +01004066 * Correctly handle CertificateRequest message in client for <= TLS 1.1
Paul Bakkerfb1ba782012-11-26 16:28:25 +01004067 without DN list
4068
4069= Version 1.2.3 released 2012-11-26
4070Bugfix
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004071 * Server not always sending correct CertificateRequest message
Paul Bakkere667c982012-11-20 13:50:22 +01004072
4073= Version 1.2.2 released 2012-11-24
4074Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004075 * Added p_hw_data to ssl_context for context specific hardware acceleration
Paul Bakkere667c982012-11-20 13:50:22 +01004076 data
Paul Bakker7c90da92012-11-23 14:02:40 +01004077 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkerdf5069c2012-11-24 12:20:19 +01004078
4079Bugfixes
Paul Bakker7c90da92012-11-23 14:02:40 +01004080 * Fixed client authentication compatibility
Paul Bakker14926332012-11-20 10:58:09 +01004081 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker34d8dbc2012-11-14 12:11:38 +00004082
4083= Version 1.2.1 released 2012-11-20
4084Changes
4085 * Depth that the certificate verify callback receives is now numbered
Paul Bakker7a2538e2012-11-02 10:59:36 +00004086 bottom-up (Peer cert depth is 0)
4087
Paul Bakkerd9374b02012-11-02 11:02:58 +00004088Bugfixes
Paul Bakkerf02c5642012-11-13 10:25:21 +00004089 * Fixes for MSVC6
4090 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01004091 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4092 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00004093 * Fixed possible segfault in mpi_shift_r() (found by Manuel
Paul Bakker7a2538e2012-11-02 10:59:36 +00004094 Pégourié-Gonnard)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004095 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakkerfab5c822012-02-06 16:45:10 +00004096
4097= Version 1.2.0 released 2012-10-31
4098Features
4099 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
Paul Bakkera8cd2392012-02-11 16:09:32 +00004100 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
4101 default!
4102 * Added support for wildcard certificates
Paul Bakkerbdb912d2012-02-13 23:11:30 +00004103 * Added support for multi-domain certificates through the X509 Subject
4104 Alternative Name extension
4105 * Added preliminary ASN.1 buffer writing support
4106 * Added preliminary X509 Certificate Request writing support
Paul Bakker89e80c92012-03-20 13:50:09 +00004107 * Added key_app_writer example application
Paul Bakker48916f92012-09-16 19:57:18 +00004108 * Added cert_req example application
Paul Bakkerca4ab492012-04-18 14:23:57 +00004109 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker01cc3942012-05-08 08:36:15 +00004110 * Added TLS 1.2 support (RFC 5246)
Paul Bakker05ef8352012-05-08 09:17:57 +00004111 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004112 * Added commandline error code convertor (util/strerror)
Paul Bakkerc9c5df92012-10-31 13:55:27 +00004113 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakker8d914582012-06-04 12:46:42 +00004114 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00004115 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker2770fbd2012-07-03 13:30:23 +00004116 * Added X509 CA Path support
Paul Bakker6132d0a2012-07-04 17:10:40 +00004117 * Added Thumb assembly optimizations
Paul Bakkerf518b162012-08-23 13:03:18 +00004118 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker48916f92012-09-16 19:57:18 +00004119 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakker29b64762012-09-25 09:36:44 +00004120 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker0a597072012-09-25 21:55:46 +00004121 * Added Secure Renegotiation (RFC 5746)
Paul Bakker5701cdc2012-09-27 21:49:42 +00004122 * Added predefined DHM groups from RFC 5114
Paul Bakker1d29fb52012-09-28 13:28:45 +00004123 * Added simple SSL session cache implementation
Paul Bakkerfab5c822012-02-06 16:45:10 +00004124 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1504af52012-02-11 16:17:43 +00004125 * Added option to add minimum accepted SSL/TLS protocol version
4126
Paul Bakker048d04e2012-02-12 17:31:04 +00004127Changes
Paul Bakker6b906e52012-05-08 12:01:43 +00004128 * Removed redundant POLARSSL_DEBUG_MSG define
4129 * AES code only check for Padlock once
Paul Bakker186751d2012-05-08 13:16:14 +00004130 * Fixed const-correctness mpi_get_bit()
Paul Bakker4d2c1242012-05-10 14:12:46 +00004131 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker5b377842012-05-16 07:57:36 +00004132 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker6132d0a2012-07-04 17:10:40 +00004133 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
4134 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakkerec636f32012-09-09 19:17:02 +00004135 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
Paul Bakker0a597072012-09-25 21:55:46 +00004136 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkereb2c6582012-09-27 19:15:01 +00004137 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
4138 * Revamped session resumption handling
Paul Bakker915275b2012-09-28 07:10:55 +00004139 * Generalized external private key implementation handling (like PKCS#11)
Paul Bakker5c2364c2012-10-01 14:41:15 +00004140 in SSL/TLS
Paul Bakker645ce3a2012-10-31 12:32:41 +00004141 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker1504af52012-02-11 16:17:43 +00004142 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker37824582012-03-22 14:10:22 +00004143 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker7beceb22012-03-22 14:19:49 +00004144
4145Bugfix
Paul Bakker430ffbe2012-05-01 08:14:20 +00004146 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
Paul Bakker5b377842012-05-16 07:57:36 +00004147 Hui Dong)
Paul Bakkerf6198c12012-05-16 08:02:29 +00004148 * Fixed potential heap corruption in x509_name allocation
4149 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00004150 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
Darryl Green11999bb2018-03-13 15:22:58 +00004151 #52)
Paul Bakkercefb3962012-06-27 11:51:09 +00004152 * Handle encryption with private key and decryption with public key as per
Paul Bakker535e97d2012-08-23 10:49:55 +00004153 RFC 2313
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00004154 * Handle empty certificate subject names
Paul Bakker995a2152012-09-25 08:19:56 +00004155 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerb00ca422012-09-25 12:10:00 +00004156 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker4f024b72012-10-30 07:29:57 +00004157 with carry rollover (found by Ruslan Yushchenko)
Paul Bakker37824582012-03-22 14:10:22 +00004158 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker452d5322012-04-05 12:07:34 +00004159 * Fixed MPI assembly for SPARC64 platform
Paul Bakker3c16db92012-07-05 13:58:08 +00004160
4161Security
Paul Bakker452d5322012-04-05 12:07:34 +00004162 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd93d28e2013-10-01 10:12:42 +02004163 Vanderbeken)
Paul Bakkerc13aab12013-09-26 10:12:19 +02004164
4165= Version 1.1.8 released on 2013-10-01
4166Bugfix
4167 * Fixed potential memory leak when failing to resume a session
4168 * Fixed potential file descriptor leaks
4169
4170Security
4171 * Potential buffer-overflow for ssl_read_record() (independently found by
4172 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
4173 * Potential negative value misinterpretation in load_file()
Paul Bakker248fff52013-06-24 19:08:50 +02004174 * Potential heap buffer overflow on large hostname setting
4175
4176= Version 1.1.7 released on 2013-06-19
4177Changes
4178 * HAVEGE random generator disabled by default
4179
4180Bugfix
4181 * x509parse_crt() now better handles PEM error situations
Darryl Green11999bb2018-03-13 15:22:58 +00004182 * ssl_parse_certificate() now calls x509parse_crt_der() directly
Paul Bakker248fff52013-06-24 19:08:50 +02004183 instead of the x509parse_crt() wrapper that can also parse PEM
4184 certificates
4185 * Fixed values for 2-key Triple DES in cipher layer
4186 * ssl_write_certificate_request() can handle empty ca_chain
4187
4188Security
4189 * A possible DoS during the SSL Handshake, due to faulty parsing of
4190 PEM-encoded certificates has been fixed (found by Jack Lloyd)
4191
4192= Version 1.1.6 released on 2013-03-11
4193Bugfix
4194 * Fixed net_bind() for specified IP addresses on little endian systems
4195
4196Changes
4197 * Allow enabling of dummy error_strerror() to support some use-cases
4198 * Debug messages about padding errors during SSL message decryption are
4199 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
4200
4201Security
4202 * Removed timing differences during SSL message decryption in
4203 ssl_decrypt_buf()
4204 * Removed timing differences due to bad padding from
4205 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
Paul Bakker9d2bb652013-01-25 16:07:49 +01004206 operations
4207
4208= Version 1.1.5 released on 2013-01-16
4209Bugfix
4210 * Fixed MPI assembly for SPARC64 platform
4211 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
4212 * mpi_add_abs() now correctly handles adding short numbers to long numbers
4213 with carry rollover
4214 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
4215 * Prevent reading over buffer boundaries on X509 certificate parsing
4216 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
4217 #52)
4218 * Fixed possible segfault in mpi_shift_r() (found by Manuel
4219 Pégourié-Gonnard)
4220 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
4221 Pégourié-Gonnard)
4222 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
4223 * Memory leak when using RSA_PKCS_V21 operations fixed
4224 * Handle encryption with private key and decryption with public key as per
4225 RFC 2313
4226 * Fixes for MSVC6
4227
4228Security
4229 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
Paul Bakkerd5834bb2012-10-02 14:38:56 +00004230 Vanderbeken)
4231
4232= Version 1.1.4 released on 2012-05-31
4233Bugfix
4234 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
4235 * Fixed potential heap corruption in x509_name allocation
Paul Bakkerfad38932012-05-08 09:04:04 +00004236 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
4237
4238= Version 1.1.3 released on 2012-04-29
4239Bugfix
4240 * Fixed random MPI generation to not generate more size than requested.
4241
4242= Version 1.1.2 released on 2012-04-26
4243Bugfix
4244 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
4245 Hui Dong)
4246
4247Security
4248 * Fixed potential memory corruption on miscrafted client messages (found by
4249 Frama-C team at CEA LIST)
4250 * Fixed generation of DHM parameters to correct length (found by Ruslan
Paul Bakker99955bf2012-01-23 09:31:41 +00004251 Yushchenko)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004252
4253= Version 1.1.1 released on 2012-01-23
4254Bugfix
Paul Bakker2ec0a562012-01-21 05:41:23 +00004255 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
Paul Bakker99955bf2012-01-23 09:31:41 +00004256 (Closes ticket #47, found by Hugo Leisink)
4257 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakkerb15b8512012-01-13 13:44:06 +00004258 * Fixed multiple compiler warnings for VS6 and armcc
Paul Bakker08a50882011-12-22 09:43:57 +00004259 * Fixed bug in CTR_CRBG selftest
Paul Bakker7eb013f2011-10-06 12:37:39 +00004260
4261= Version 1.1.0 released on 2011-12-22
4262Features
Darryl Green11999bb2018-03-13 15:22:58 +00004263 * Added ssl_session_reset() to allow better multi-connection pools of
Paul Bakker490ecc82011-10-06 13:04:09 +00004264 SSL contexts without needing to set all non-connection-specific
4265 data and pointers again. Adapted ssl_server to use this functionality.
Darryl Green11999bb2018-03-13 15:22:58 +00004266 * Added ssl_set_max_version() to allow clients to offer a lower maximum
Paul Bakker03a30d32011-11-11 10:55:02 +00004267 supported version to a server to help buggy server implementations.
4268 (Closes ticket #36)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00004269 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
Paul Bakker6083fd22011-12-03 21:45:14 +00004270 introspection functions (Closes ticket #40)
4271 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Darryl Green11999bb2018-03-13 15:22:58 +00004272 * Added a generic entropy accumulator that provides support for adding
Paul Bakker7eb013f2011-10-06 12:37:39 +00004273 custom entropy sources and added some generic and platform dependent
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004274 entropy sources
4275
Paul Bakkerd246ed32011-10-06 13:18:27 +00004276Changes
4277 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerc4909d92011-10-12 09:52:22 +00004278 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
Paul Bakkerfbc09f32011-10-12 09:56:41 +00004279 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00004280 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerefc30292011-11-10 14:43:23 +00004281 * Added an EXPLICIT tag number parameter to x509_get_ext()
4282 * Added a separate CRL entry extension parsing function
Paul Bakker5e18aed2011-11-15 15:38:45 +00004283 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
4284 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakkercce9d772011-11-18 14:26:47 +00004285 * Changed the defined key-length of DES ciphers in cipher.h to include the
Paul Bakker2e6d5322011-11-18 14:34:17 +00004286 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00004287 * Loads of minimal changes to better support WINCE as a build target
4288 (Credits go to Marco Lizza)
Paul Bakkerfe3256e2011-11-25 12:11:43 +00004289 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
4290 trade-off
Paul Bakkera3d195c2011-11-27 21:07:34 +00004291 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
4292 management (Closes ticket #44)
Paul Bakkera35aa542013-03-06 17:06:21 +01004293 * Changed the used random function pointer to more flexible format. Renamed
Paul Bakker508ad5a2011-12-04 17:09:26 +00004294 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakker6c0ceb32011-12-04 12:24:18 +00004295 a consequence in library code and programs
4296 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakkera35aa542013-03-06 17:06:21 +01004297 * Added permissive certificate parsing to x509parse_crt() and
4298 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakker69e095c2011-12-10 21:55:01 +00004299 encountering a parse-error. Beware that the meaning of return values has
Paul Bakkerca6f3e22011-10-06 13:11:08 +00004300 changed!
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004301 * All error codes are now negative. Even on mermory failures and IO errors.
4302
4303Bugfix
Paul Bakker3329d1f2011-10-12 09:55:01 +00004304 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
4305 ticket #37)
Paul Bakkercebdf172011-11-11 15:01:31 +00004306 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
4307 before version numbers
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00004308 * Allowed X509 key usage parsing to accept 4 byte values instead of the
4309 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker03c7c252011-11-25 12:37:37 +00004310 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
4311 smaller than the hash length. (Closes ticket #41)
Paul Bakker44637402011-11-26 09:23:07 +00004312 * If certificate serial is longer than 32 octets, serial number is now
Paul Bakker4f5ae802011-12-04 22:10:28 +00004313 appended with '....' after first 28 octets
Paul Bakkerc50132d2011-12-05 14:38:36 +00004314 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00004315 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerfa1c5922011-10-06 14:18:49 +00004316 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakker968bc982011-07-27 17:03:00 +00004317 certificates and CRLs
Paul Bakker343a8702011-06-09 14:27:58 +00004318
4319= Version 1.0.0 released on 2011-07-27
Paul Bakker7bc05ff2011-08-09 10:30:36 +00004320Features
Paul Bakker343a8702011-06-09 14:27:58 +00004321 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker42e59812011-06-09 15:55:41 +00004322 * Added rsa_encrypt and rsa_decrypt simple example programs.
4323
4324Changes
4325 * The generic cipher and message digest layer now have normal error
Paul Bakker887bd502011-06-08 13:10:54 +00004326 codes instead of integers
4327
4328Bugfix
4329 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
Paul Bakker828acb22011-05-27 09:25:42 +00004330 #18)
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004331
4332= Version 0.99-pre5 released on 2011-05-26
4333Features
Paul Bakkera35aa542013-03-06 17:06:21 +01004334 * Added additional Cipher Block Modes to symmetric ciphers
Paul Bakker335db3f2011-04-25 15:28:35 +00004335 (AES CTR, Camellia CTR, XTEA CBC) including the option to
4336 enable and disable individual modes when needed
Paul Bakker9d781402011-05-09 16:17:09 +00004337 * Functions requiring File System functions can now be disabled
4338 by undefining POLARSSL_FS_IO
Paul Bakker2f5947e2011-05-18 15:47:11 +00004339 * A error_strerror function() has been added to translate between
4340 error codes and their description.
Paul Bakker1496d382011-05-23 12:07:29 +00004341 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00004342 functions.
Paul Bakker23986e52011-04-24 08:57:21 +00004343 * Added ssl_mail_client and ssl_fork_server as example programs.
4344
4345Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004346 * Major argument / variable rewrite. Introduced use of size_t
4347 instead of int for buffer lengths and loop variables for
Paul Bakker6c591fa2011-05-05 11:49:20 +00004348 better unsigned / signed use. Renamed internal bigint types
4349 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker9d781402011-05-09 16:17:09 +00004350 * mpi_init() and mpi_free() now only accept a single MPI
4351 argument and do not accept variable argument lists anymore.
Paul Bakkera35aa542013-03-06 17:06:21 +01004352 * The error codes have been remapped and combining error codes
Paul Bakker831a7552011-05-18 13:32:51 +00004353 is now done with a PLUS instead of an OR as error codes
4354 used are negative.
Paul Bakkera35aa542013-03-06 17:06:21 +01004355 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
4356 net_recv() now returns 0 on EOF instead of
4357 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
4358 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
Paul Bakker831a7552011-05-18 13:32:51 +00004359 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
4360 after the handshake.
Paul Bakkera35aa542013-03-06 17:06:21 +01004361 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
Paul Bakker23986e52011-04-24 08:57:21 +00004362 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakker3efa5752011-04-01 12:23:26 +00004363 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker9dcc3222011-03-08 14:16:06 +00004364
4365= Version 0.99-pre4 released on 2011-04-01
4366Features
Paul Bakkere77db2e2011-03-25 14:01:32 +00004367 * Added support for PKCS#1 v2.1 encoding and thus support
4368 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakker287781a2011-03-26 13:18:49 +00004369 * Reading of Public Key files incorporated into default x509
4370 functionality as well.
Paul Bakker9dcc3222011-03-08 14:16:06 +00004371 * Added mpi_fill_random() for centralized filling of big numbers
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004372 with random data (Fixed ticket #10)
Hanno Becker01a0e072017-07-26 11:49:40 +01004373
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004374Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01004375 * Debug print of MPI now removes leading zero octets and
Paul Bakker98675492011-03-26 13:17:12 +00004376 displays actual bit size of the value.
Paul Bakkera35aa542013-03-06 17:06:21 +01004377 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004378 does not zeroize memory in advance anymore. Use rsa_init()
4379 before parsing a key or keyfile!
4380
4381Bugfix
Paul Bakkera35aa542013-03-06 17:06:21 +01004382 * Debug output of MPI's now the same independent of underlying
Paul Bakker1fd00bf2011-03-14 20:50:15 +00004383 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
4384 Kiilerich and Mihai Militaru)
Paul Bakkere77db2e2011-03-25 14:01:32 +00004385 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
4386 #18, found by Nikolay Epifanov)
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00004387 * Fixed proper handling of RSASSA-PSS verification with variable
Paul Bakker345a6fe2011-02-28 21:20:02 +00004388 length salt lengths
4389
Paul Bakker96743fc2011-02-12 14:30:57 +00004390= Version 0.99-pre3 released on 2011-02-28
4391This release replaces version 0.99-pre2 which had possible copyright issues.
4392Features
Paul Bakkera9507c02011-02-12 15:27:28 +00004393 * Parsing PEM private keys encrypted with DES and AES
4394 are now supported as well (Fixes ticket #5)
Paul Bakker96743fc2011-02-12 14:30:57 +00004395 * Added crl_app program to allow easy reading and
4396 printing of X509 CRLs from file
Hanno Becker01a0e072017-07-26 11:49:40 +01004397
Paul Bakker96743fc2011-02-12 14:30:57 +00004398Changes
Paul Bakkera35aa542013-03-06 17:06:21 +01004399 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00004400 ticket #13). Also possible to remove PEM support for
Paul Bakker400ff6f2011-02-20 10:40:16 +00004401 systems only using DER encoding
4402
4403Bugfixes
4404 * Corrected parsing of UTCTime dates before 1990 and
Darryl Green11999bb2018-03-13 15:22:58 +00004405 after 1950
Paul Bakker400ff6f2011-02-20 10:40:16 +00004406 * Support more exotic OID's when parsing certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004407 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00004408 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00004409 certificates (found by Mads Kiilerich)
4410 * Replaced the expired test certificates
Paul Bakkera35aa542013-03-06 17:06:21 +01004411 * Do not bail out if no client certificate specified. Try
Paul Bakker400ff6f2011-02-20 10:40:16 +00004412 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakker345a6fe2011-02-28 21:20:02 +00004413 found by Boris Krasnovskiy)
4414
4415Security fixes
Paul Bakkera35aa542013-03-06 17:06:21 +01004416 * Fixed a possible Man-in-the-Middle attack on the
Paul Bakker345a6fe2011-02-28 21:20:02 +00004417 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakker9fc46592011-01-30 16:59:02 +00004418 Subreption LLC)
Paul Bakker37ca75d2011-01-06 12:28:03 +00004419
Paul Bakkerb63b0af2011-01-13 17:54:59 +00004420= Version 0.99-pre1 released on 2011-01-30
4421Features
Paul Bakker1b57b062011-01-06 15:48:19 +00004422Note: Most of these features have been donated by Fox-IT
Paul Bakker74111d32011-01-15 16:57:55 +00004423 * Added Doxygen source code documentation parts
Paul Bakker76fd75a2011-01-16 21:12:10 +00004424 * Added reading of DHM context from memory and file
4425 * Improved X509 certificate parsing to include extended
4426 certificate fields, including Key Usage
Paul Bakker1f87fb62011-01-15 17:32:24 +00004427 * Improved certificate verification and verification
Paul Bakker72f62662011-01-16 21:27:44 +00004428 against the available CRLs
4429 * Detection for DES weak keys and parity bits added
4430 * Improvements to support integration in other
4431 applications:
4432 + Added generic message digest and cipher wrapper
4433 + Improved information about current capabilities,
4434 status, objects and configuration
Darryl Green11999bb2018-03-13 15:22:58 +00004435 + Added verification callback on certificate chain
Paul Bakker43b7e352011-01-18 15:27:19 +00004436 verification to allow external blacklisting
4437 + Additional example programs to show usage
Paul Bakker37ca75d2011-01-06 12:28:03 +00004438 * Added support for PKCS#11 through the use of the
Paul Bakkerb6194992011-01-16 21:40:22 +00004439 libpkcs11-helper library
4440
4441Changes
Paul Bakkere3166ce2011-01-27 17:40:50 +00004442 * x509parse_time_expired() checks time in addition to
4443 the existing date check
Paul Bakkera35aa542013-03-06 17:06:21 +01004444 * The ciphers member of ssl_context and the cipher member
4445 of ssl_session have been renamed to ciphersuites and
4446 ciphersuite respectively. This clarifies the difference
Paul Bakkerb6194992011-01-16 21:40:22 +00004447 with the generic cipher layer and is better naming
Paul Bakker99ed6782011-01-05 14:48:42 +00004448 altogether
4449
4450= Version 0.14.0 released on 2010-08-16
4451Features
4452 * Added support for SSL_EDH_RSA_AES_128_SHA and
4453 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
4454 * Added compile-time and run-time version information
4455 * Expanded ssl_client2 arguments for more flexibility
4456 * Added support for TLS v1.1
4457
4458Changes
4459 * Made Makefile cleaner
Paul Bakkera35aa542013-03-06 17:06:21 +01004460 * Removed dependency on rand() in rsa_pkcs1_encrypt().
4461 Now using random fuction provided to function and
Paul Bakker99ed6782011-01-05 14:48:42 +00004462 changed the prototype of rsa_pkcs1_encrypt(),
4463 rsa_init() and rsa_gen_key().
4464 * Some SSL defines were renamed in order to avoid
4465 future confusion
4466
4467Bug fixes
4468 * Fixed CMake out of source build for tests (found by
4469 kkert)
4470 * rsa_check_private() now supports PKCS1v2 keys as well
4471 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
4472 generator
4473
4474= Version 0.13.1 released on 2010-03-24
4475Bug fixes
4476 * Fixed Makefile in library that was mistakenly merged
4477 * Added missing const string fixes
4478
4479= Version 0.13.0 released on 2010-03-21
4480Features
4481 * Added option parsing for host and port selection to
4482 ssl_client2
4483 * Added support for GeneralizedTime in X509 parsing
4484 * Added cert_app program to allow easy reading and
4485 printing of X509 certificates from file or SSL
4486 connection.
4487
4488Changes
4489 * Added const correctness for main code base
4490 * X509 signature algorithm determination is now
4491 in a function to allow easy future expansion
Paul Bakker60b1d102013-10-29 10:02:51 +01004492 * Changed symmetric cipher functions to
Paul Bakker99ed6782011-01-05 14:48:42 +00004493 identical interface (returning int result values)
4494 * Changed ARC4 to use separate input/output buffer
4495 * Added reset function for HMAC context as speed-up
4496 for specific use-cases
4497
4498Bug fixes
4499 * Fixed bug resulting in failure to send the last
4500 certificate in the chain in ssl_write_certificate() and
4501 ssl_write_certificate_request() (found by fatbob)
4502 * Added small fixes for compiler warnings on a Mac
4503 (found by Frank de Brabander)
4504 * Fixed algorithmic bug in mpi_is_prime() (found by
4505 Smbat Tonoyan)
4506
4507= Version 0.12.1 released on 2009-10-04
4508Changes
4509 * Coverage test definitions now support 'depends_on'
4510 tagging system.
4511 * Tests requiring specific hashing algorithms now honor
4512 the defines.
4513
4514Bug fixes
4515 * Changed typo in #ifdef in x509parse.c (found
4516 by Eduardo)
4517
4518= Version 0.12.0 released on 2009-07-28
4519Features
4520 * Added CMake makefiles as alternative to regular Makefiles.
4521 * Added preliminary Code Coverage tests for AES, ARC4,
4522 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
4523 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
4524 and X509parse.
4525
4526Changes
4527 * Error codes are not (necessarily) negative. Keep
4528 this is mind when checking for errors.
4529 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
4530 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
4531 * Changed interface for AES and Camellia setkey functions
4532 to indicate invalid key lengths.
4533
4534Bug fixes
4535 * Fixed include location of endian.h on FreeBSD (found by
4536 Gabriel)
4537 * Fixed include location of endian.h and name clash on
4538 Apples (found by Martin van Hensbergen)
4539 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
Hanno Becker01a0e072017-07-26 11:49:40 +01004540 required HMAC ipad and opad variables are not cleared.
Paul Bakker99ed6782011-01-05 14:48:42 +00004541 (found by code coverage tests)
4542 * Prevented use of long long in bignum if
4543 POLARSSL_HAVE_LONGLONG not defined (found by Giles
4544 Bathgate).
4545 * Fixed incorrect handling of negative strings in
4546 mpi_read_string() (found by code coverage tests).
4547 * Fixed segfault on handling empty rsa_context in
4548 rsa_check_pubkey() and rsa_check_privkey() (found by
4549 code coverage tests).
4550 * Fixed incorrect handling of one single negative input
4551 value in mpi_add_abs() (found by code coverage tests).
4552 * Fixed incorrect handling of negative first input
4553 value in mpi_sub_abs() (found by code coverage tests).
4554 * Fixed incorrect handling of negative first input
4555 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
4556 change also affects mpi_write_string() (found by code
4557 coverage tests).
4558 * Corrected is_prime() results for 0, 1 and 2 (found by
4559 code coverage tests).
4560 * Fixed Camellia and XTEA for 64-bit Windows systems.
4561
4562= Version 0.11.1 released on 2009-05-17
4563 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
4564 SHA-512 in rsa_pkcs1_sign()
4565
4566= Version 0.11.0 released on 2009-05-03
4567 * Fixed a bug in mpi_gcd() so that it also works when both
4568 input numbers are even and added testcases to check
4569 (found by Pierre Habouzit).
4570 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
4571 one way hash functions with the PKCS#1 v1.5 signing and
4572 verification.
4573 * Fixed minor bug regarding mpi_gcd located within the
4574 POLARSSL_GENPRIME block.
4575 * Fixed minor memory leak in x509parse_crt() and added better
4576 handling of 'full' certificate chains (found by Mathias
4577 Olsson).
4578 * Centralized file opening and reading for x509 files into
4579 load_file()
4580 * Made definition of net_htons() endian-clean for big endian
Hanno Becker01a0e072017-07-26 11:49:40 +01004581 systems (Found by Gernot).
Paul Bakker99ed6782011-01-05 14:48:42 +00004582 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
4583 padlock and timing code.
4584 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
4585 responsible for crashes and unwanted behaviour.
4586 * Added support for Certificate Revocation List (CRL) parsing.
4587 * Added support for CRL revocation to x509parse_verify() and
4588 SSL/TLS code.
4589 * Fixed compatibility of XTEA and Camellia on a 64-bit system
4590 (found by Felix von Leitner).
4591
4592= Version 0.10.0 released on 2009-01-12
4593 * Migrated XySSL to PolarSSL
4594 * Added XTEA symmetric cipher
4595 * Added Camellia symmetric cipher
4596 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
4597 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
4598 * Fixed dangerous bug that can cause a heap overflow in
4599 rsa_pkcs1_decrypt (found by Christophe Devine)
4600
4601================================================================
4602XySSL ChangeLog
4603
4604= Version 0.9 released on 2008-03-16
4605
4606 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
4607 * Enabled support for large files by default in aescrypt2.c
4608 * Preliminary openssl wrapper contributed by David Barrett
4609 * Fixed a bug in ssl_write() that caused the same payload to
4610 be sent twice in non-blocking mode when send returns EAGAIN
4611 * Fixed ssl_parse_client_hello(): session id and challenge must
4612 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
4613 * Added user-defined callback debug function (Krystian Kolodziej)
4614 * Before freeing a certificate, properly zero out all cert. data
4615 * Fixed the "mode" parameter so that encryption/decryption are
4616 not swapped on PadLock; also fixed compilation on older versions
Antonin Décimo36e89b52019-01-23 15:24:37 +01004617 of gcc (bug reported by David Barrett)
Paul Bakker99ed6782011-01-05 14:48:42 +00004618 * Correctly handle the case in padlock_xcryptcbc() when input or
4619 output data is non-aligned by falling back to the software
4620 implementation, as VIA Nehemiah cannot handle non-aligned buffers
4621 * Fixed a memory leak in x509parse_crt() which was reported by Greg
4622 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
4623 Matthew Page who reported several bugs
4624 * Fixed x509_get_ext() to accept some rare certificates which have
4625 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
4626 * Added support on the client side for the TLS "hostname" extension
4627 (patch contributed by David Patino)
4628 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
4629 string is passed as the CN (bug reported by spoofy)
4630 * Added an option to enable/disable the BN assembly code
4631 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
4632 * Disabled obsolete hash functions by default (MD2, MD4); updated
4633 selftest and benchmark to not test ciphers that have been disabled
4634 * Updated x509parse_cert_info() to correctly display byte 0 of the
4635 serial number, setup correct server port in the ssl client example
4636 * Fixed a critical denial-of-service with X.509 cert. verification:
4637 peer may cause xyssl to loop indefinitely by sending a certificate
4638 for which the RSA signature check fails (bug reported by Benoit)
4639 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
4640 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
4641 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
4642 * Modified ssl_parse_client_key_exchange() to protect against
4643 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
4644 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
4645 * Updated rsa_gen_key() so that ctx->N is always nbits in size
4646 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
4647 David Barrett and Dusan Semen
4648
4649= Version 0.8 released on 2007-10-20
4650
4651 * Modified the HMAC functions to handle keys larger
4652 than 64 bytes, thanks to Stephane Desneux and gary ng
4653 * Fixed ssl_read_record() to properly update the handshake
4654 message digests, which fixes IE6/IE7 client authentication
4655 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
4656 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
4657 * Added user-defined callbacks for handling I/O and sessions
4658 * Added lots of debugging output in the SSL/TLS functions
4659 * Added preliminary X.509 cert. writing by Pascal Vizeli
4660 * Added preliminary support for the VIA PadLock routines
4661 * Added AES-CFB mode of operation, contributed by chmike
4662 * Added an SSL/TLS stress testing program (ssl_test.c)
4663 * Updated the RSA PKCS#1 code to allow choosing between
4664 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
4665 * Updated ssl_read() to skip 0-length records from OpenSSL
4666 * Fixed the make install target to comply with *BSD make
4667 * Fixed a bug in mpi_read_binary() on 64-bit platforms
4668 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
4669 * Fixed a long standing memory leak in mpi_is_prime()
4670 * Replaced realloc with malloc in mpi_grow(), and set
4671 the sign of zero as positive in mpi_init() (reported
4672 by Jonathan M. McCune)
4673
4674= Version 0.7 released on 2007-07-07
4675
4676 * Added support for the MicroBlaze soft-core processor
4677 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4678 connections from being established with non-blocking I/O
4679 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4680 * Fixed the "PIC register ebx clobbered in asm" bug
4681 * Added HMAC starts/update/finish support functions
4682 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4683 * Fixed the net_set_*block routines, thanks to Andreas
4684 * Added a few demonstration programs: md5sum, sha1sum,
4685 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4686 * Added new bignum import and export helper functions
4687 * Rewrote README.txt in program/ssl/ca to better explain
4688 how to create a test PKI
4689
4690= Version 0.6 released on 2007-04-01
4691
4692 * Ciphers used in SSL/TLS can now be disabled at compile
4693 time, to reduce the memory footprint on embedded systems
4694 * Added multiply assembly code for the TriCore and modified
4695 havege_struct for this processor, thanks to David Patiño
4696 * Added multiply assembly code for 64-bit PowerPCs,
4697 thanks to Peking University and the OSU Open Source Lab
4698 * Added experimental support of Quantum Cryptography
4699 * Added support for autoconf, contributed by Arnaud Cornet
4700 * Fixed "long long" compilation issues on IA-64 and PPC64
4701 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4702 was not being correctly defined on ARM and MIPS
4703
4704= Version 0.5 released on 2007-03-01
4705
4706 * Added multiply assembly code for SPARC and Alpha
4707 * Added (beta) support for non-blocking I/O operations
4708 * Implemented session resuming and client authentication
4709 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4710 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4711 * Improved the performance of the EDH key exchange
4712 * Fixed a bug that caused valid packets with a payload
4713 size of 16384 bytes to be rejected
4714
4715= Version 0.4 released on 2007-02-01
4716
4717 * Added support for Ephemeral Diffie-Hellman key exchange
4718 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4719 * Various improvement to the modular exponentiation code
4720 * Rewrote the headers to generate the API docs with doxygen
4721 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4722 generated) and in ssl_parse_client_hello (max. client
4723 version was not properly set), thanks to Didier Rebeix
4724 * Fixed another bug in ssl_parse_client_hello: clients with
4725 cipherlists larger than 96 bytes were incorrectly rejected
4726 * Fixed a couple memory leak in x509_read.c
4727
4728= Version 0.3 released on 2007-01-01
4729
4730 * Added server-side SSLv3 and TLSv1.0 support
4731 * Multiple fixes to enhance the compatibility with g++,
Paul Bakker60b1d102013-10-29 10:02:51 +01004732 thanks to Xosé Antón Otero Ferreira
Paul Bakker99ed6782011-01-05 14:48:42 +00004733 * Fixed a bug in the CBC code, thanks to dowst; also,
4734 the bignum code is no longer dependent on long long
4735 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4736 * Updated timing.c for improved compatibility with i386
4737 and 486 processors, thanks to Arnaud Cornet
4738
4739= Version 0.2 released on 2006-12-01
4740
4741 * Updated timing.c to support ARM and MIPS arch
4742 * Updated the MPI code to support 8086 on MSVC 1.5
4743 * Added the copyright notice at the top of havege.h
4744 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4745 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4746 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4747 * Fixed a bug in rsa_check_privkey that would wrongly cause
4748 valid RSA keys to be dismissed (thanks to oldwolf)
4749 * Fixed a bug in mpi_is_prime that caused some primes to fail
4750 the Miller-Rabin primality test
4751
4752 I'd also like to thank Younès Hafri for the CRUX linux port,
4753 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4754 who maintains the Debian package :-)
Paul Bakker5121ce52009-01-03 21:22:43 +00004755
4756= Version 0.1 released on 2006-11-01