Merge branch 'development' into iotssl-1260-non-blocking-ecc-restricted
Summary of merge conflicts:
include/mbedtls/ecdh.h -> documentation style
include/mbedtls/ecdsa.h -> documentation style
include/mbedtls/ecp.h -> alt style, new error codes, documentation style
include/mbedtls/error.h -> new error codes
library/error.c -> new error codes (generated anyway)
library/ecp.c:
- code of an extracted function was changed
library/ssl_cli.c:
- code addition on one side near code change on the other side
(ciphersuite validation)
library/x509_crt.c -> various things
- top fo file: helper structure added near old zeroize removed
- documentation of find_parent_in()'s signature: improved on one side,
added arguments on the other side
- documentation of find_parent()'s signature: same as above
- verify_chain(): variables initialised later to give compiler an
opportunity to warn us if not initialised on a code path
- find_parent(): funcion structure completely changed, for some reason git
tried to insert a paragraph of the old structure...
- merge_flags_with_cb(): data structure changed, one line was fixed with a
cast to keep MSVC happy, this cast is already in the new version
- in verify_restratable(): adjacent independent changes (function
signature on one line, variable type on the next)
programs/ssl/ssl_client2.c:
- testing for IN_PROGRESS return code near idle() (event-driven):
don't wait for data in the the socket if ECP_IN_PROGRESS
tests/data_files/Makefile: adjacent independent additions
tests/suites/test_suite_ecdsa.data: adjacent independent additions
tests/suites/test_suite_x509parse.data: adjacent independent additions
* development: (1059 commits)
Change symlink to hardlink to avoid permission issues
Fix out-of-tree testing symlinks on Windows
Updated version number to 2.10.0 for release
Add a disabled CMAC define in the no-entropy configuration
Adapt the ARIA test cases for new ECB function
Fix file permissions for ssl.h
Add ChangeLog entry for PR#1651
Fix MicroBlaze register typo.
Fix typo in doc and copy missing warning
Fix edit mistake in cipher_wrap.c
Update CTR doc for the 64-bit block cipher
Update CTR doc for other 128-bit block ciphers
Slightly tune ARIA CTR documentation
Remove double declaration of mbedtls_ssl_list_ciphersuites
Update CTR documentation
Use zeroize function from new platform_util
Move to new header style for ALT implementations
Add ifdef for selftest in header file
Fix typo in comments
Use more appropriate type for local variable
...
diff --git a/ChangeLog b/ChangeLog
index 3acb972..aca6e0f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,6 @@
mbed TLS ChangeLog (Sorted per branch, date)
-= mbed TLS 2.y.0 released YYYY-MM-DD
+= mbed TLS x.x.x branch released xxxx-xx-xx
Features
* Add support for restartable ECC operations, enabled by
@@ -10,70 +10,516 @@
functions in ECDH and SSL (currently only implemented client-side, for
ECDHE-ECDSA ciphersuites with TLS 1.2, including client authentication).
-= mbed TLS x.x.x branch released xxxx-xx-xx
+= mbed TLS 2.10.0 branch released 2018-06-06
+
+Features
+ * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
+ (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
+
+API Changes
+ * Extend the platform module with a util component that contains
+ functionality shared by multiple Mbed TLS modules. At this stage
+ platform_util.h (and its associated platform_util.c) only contain
+ mbedtls_platform_zeroize(), which is a critical function from a security
+ point of view. mbedtls_platform_zeroize() needs to be regularly tested
+ against compilers to ensure that calls to it are not removed from the
+ output binary as part of redundant code elimination optimizations.
+ Therefore, mbedtls_platform_zeroize() is moved to the platform module to
+ facilitate testing and maintenance.
+
+Bugfix
+ * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
+ build to fail. Found by zv-io. Fixes #1651.
+
+Changes
+ * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
+ * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
+ TrinityTonic. #1359.
+
+= mbed TLS 2.9.0 branch released 2018-04-30
Security
- * Fix authentication bypass in SSL/TLS: when auth_mode is set to optional,
+ * Fix an issue in the X.509 module which could lead to a buffer overread
+ during certificate validation. Additionally, the issue could also lead to
+ unnecessary callback checks being made or to some validation checks to be
+ omitted. The overread could be triggered remotely, while the other issues
+ would require a non DER-compliant certificate to be correctly signed by a
+ trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
+ luocm. Fixes #825.
+ * Fix the buffer length assertion in the ssl_parse_certificate_request()
+ function which led to an arbitrary overread of the message buffer. The
+ overreads could be caused by receiving a malformed message at the point
+ where an optional signature algorithms list is expected when the signature
+ algorithms section is too short. In builds with debug output, the overread
+ data is output with the debug data.
+ * Fix a client-side bug in the validation of the server's ciphersuite choice
+ which could potentially lead to the client accepting a ciphersuite it didn't
+ offer or a ciphersuite that cannot be used with the TLS or DTLS version
+ chosen by the server. This could lead to corruption of internal data
+ structures for some configurations.
+
+Features
+ * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
+ tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
+ Suggested and contributed by jkivilin in pull request #394.
+ * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
+ ECDH primitive functions (mbedtls_ecdh_gen_public(),
+ mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
+ Nicholas Wilson in pull request #348.
+
+API Changes
+ * Extend the public API with the function of mbedtls_net_poll() to allow user
+ applications to wait for a network context to become ready before reading
+ or writing.
+ * Add function mbedtls_ssl_check_pending() to the public API to allow
+ a check for whether more more data is pending to be processed in the
+ internal message buffers.
+ This function is necessary to determine when it is safe to idle on the
+ underlying transport in case event-driven IO is used.
+
+Bugfix
+ * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
+ contributed by Brian J Murray and David Brown.
+ * Add missing dependencies in test suites that led to build failures
+ in configurations that omit certain hashes or public-key algorithms.
+ Fixes #1040.
+ * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
+ #1353
+ * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
+ MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
+ Deomid Ryabkov. Fixes #1299, #1475.
+ * Fix the Makefile build process for building shared libraries on Mac OS X.
+ Fixed by mnacamura.
+ * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
+ unable to parse keys which had only the optional parameters field of the
+ ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
+ * Return the plaintext data more quickly on unpadded CBC decryption, as
+ stated in the mbedtls_cipher_update() documentation. Contributed by
+ Andy Leiserson.
+ * Fix overriding and ignoring return values when parsing and writing to
+ a file in pk_sign program. Found by kevlut in #1142.
+ * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
+ where data needs to be fetched from the underlying transport in order
+ to make progress. Previously, this error code was also occasionally
+ returned when unexpected messages were being discarded, ignoring that
+ further messages could potentially already be pending to be processed
+ in the internal buffers; these cases led to deadlocks when event-driven
+ I/O was used. Found and reported by Hubert Mis in #772.
+ * Fix buffer length assertions in the ssl_parse_certificate_request()
+ function which leads to a potential one byte overread of the message
+ buffer.
+ * Fix invalid buffer sizes passed to zlib during record compression and
+ decompression.
+ * Fix the soversion of libmbedcrypto to match the soversion of the
+ maintained 2.7 branch. The soversion was increased in Mbed TLS
+ version 2.7.1 to reflect breaking changes in that release, but the
+ increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
+
+Changes
+ * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
+ * Support cmake builds where Mbed TLS is a subproject. Fix contributed
+ independently by Matthieu Volat and Arne Schwabe.
+ * Improve testing in configurations that omit certain hashes or
+ public-key algorithms. Includes contributions by Gert van Dijk.
+ * Improve negative testing of X.509 parsing.
+ * Do not define global mutexes around readdir() and gmtime() in
+ configurations where the feature is disabled. Found and fixed by Gergely
+ Budai.
+ * Harden the function mbedtls_ssl_config_free() against misuse, so that it
+ doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
+ instead incorrectly manipulates the configuration structure directly.
+ Found and fix submitted by junyeonLEE in #1220.
+ * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
+ MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
+ without PBES2. Fixed by Marcos Del Sol Vives.
+ * Add the order of the base point as N in the mbedtls_ecp_group structure
+ for Curve25519 (other curves had it already). Contributed by Nicholas
+ Wilson #481
+ * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
+ Krylov.
+ * Improve the documentation of mbedtls_ssl_write(). Suggested by
+ Paul Sokolovsky in #1356.
+ * Add an option in the Makefile to support ar utilities where the operation
+ letter must not be prefixed by '-', such as LLVM. Found and fixed by
+ Alex Hixon.
+ * Allow configuring the shared library extension by setting the DLEXT
+ environment variable when using the project makefiles.
+ * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
+ by Alexey Skalozub in #405.
+ * In the SSL module, when f_send, f_recv or f_recv_timeout report
+ transmitting more than the required length, return an error. Raised by
+ Sam O'Connor in #1245.
+ * Improve robustness of mbedtls_ssl_derive_keys against the use of
+ HMAC functions with non-HMAC ciphersuites. Independently contributed
+ by Jiayuan Chen in #1377. Fixes #1437.
+ * Improve security of RSA key generation by including criteria from
+ FIPS 186-4. Contributed by Jethro Beekman. #1380
+ * Declare functions in header files even when an alternative implementation
+ of the corresponding module is activated by defining the corresponding
+ MBEDTLS_XXX_ALT macro. This means that alternative implementations do
+ not need to copy the declarations, and ensures that they will have the
+ same API.
+ * Add platform setup and teardown calls in test suites.
+
+= mbed TLS 2.8.0 branch released 2018-03-16
+
+Default behavior changes
+ * The truncated HMAC extension now conforms to RFC 6066. This means
+ that when both sides of a TLS connection negotiate the truncated
+ HMAC extension, Mbed TLS can now interoperate with other
+ compliant implementations, but this breaks interoperability with
+ prior versions of Mbed TLS. To restore the old behavior, enable
+ the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
+ config.h. Found by Andreas Walz (ivESK, Offenburg University of
+ Applied Sciences).
+
+Security
+ * Fix implementation of the truncated HMAC extension. The previous
+ implementation allowed an offline 2^80 brute force attack on the
+ HMAC key of a single, uninterrupted connection (with no
+ resumption of the session).
+ * Verify results of RSA private key operations to defend
+ against Bellcore glitch attack.
+ * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
+ a crash on invalid input.
+ * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
+ crash on invalid input.
+ * Fix CRL parsing to reject CRLs containing unsupported critical
+ extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
+
+Features
+ * Extend PKCS#8 interface by introducing support for the entire SHA
+ algorithms family when encrypting private keys using PKCS#5 v2.0.
+ This allows reading encrypted PEM files produced by software that
+ uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
+ OpenVPN Inc. Fixes #1339
+ * Add support for public keys encoded in PKCS#1 format. #1122
+
+New deprecations
+ * Deprecate support for record compression (configuration option
+ MBEDTLS_ZLIB_SUPPORT).
+
+Bugfix
+ * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
+ Fixes #1358.
+ * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
+ * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
+ with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
+ In the context of SSL, this resulted in handshake failure. Reported by
+ daniel in the Mbed TLS forum. #1351
+ * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
+ * Fix setting version TLSv1 as minimal version, even if TLS 1
+ is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
+ and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
+ MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
+ * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
+ only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
+ Nick Wilson on issue #355
+ * In test_suite_pk, pass valid parameters when testing for hash length
+ overflow. #1179
+ * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
+ by Guido Vranken. #639
+ * Log correct number of ciphersuites used in Client Hello message. #918
+ * Fix X509 CRT parsing that would potentially accept an invalid tag when
+ parsing the subject alternative names.
+ * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
+ that could cause a key exchange to fail on valid data.
+ * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
+ could cause a key exchange to fail on valid data.
+ * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
+ MBEDTLS_DEPRECATED_REMOVED. #1388
+ * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
+ Found through fuzz testing.
+
+Changes
+ * Fix tag lengths and value ranges in the documentation of CCM encryption.
+ Contributed by Mathieu Briand.
+ * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
+ * Remove support for the library reference configuration for picocoin.
+ * MD functions deprecated in 2.7.0 are no longer inline, to provide
+ a migration path for those depending on the library's ABI.
+ * Clarify the documentation of mbedtls_ssl_setup.
+ * Use (void) when defining functions with no parameters. Contributed by
+ Joris Aerts. #678
+
+= mbed TLS 2.7.0 branch released 2018-02-03
+
+Security
+ * Fix a heap corruption issue in the implementation of the truncated HMAC
+ extension. When the truncated HMAC extension is enabled and CBC is used,
+ sending a malicious application packet could be used to selectively corrupt
+ 6 bytes on the peer's heap, which could potentially lead to crash or remote
+ code execution. The issue could be triggered remotely from either side in
+ both TLS and DTLS. CVE-2018-0488
+ * Fix a buffer overflow in RSA-PSS verification when the hash was too large
+ for the key size, which could potentially lead to crash or remote code
+ execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
+ Qualcomm Technologies Inc. CVE-2018-0487
+ * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
+ zeros.
+ * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
+ 64 KiB to the address of the SSL buffer and causing a wrap around.
+ * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
+ default enabled) maximum fragment length extension is disabled in the
+ config and the application data buffer passed to mbedtls_ssl_write
+ is larger than the internal message buffer (16384 bytes by default), the
+ latter overflows. The exploitability of this issue depends on whether the
+ application layer can be forced into sending such large packets. The issue
+ was independently reported by Tim Nordell via e-mail and by Florin Petriuc
+ and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
+ Fixes #707.
+ * Add a provision to prevent compiler optimizations breaking the time
+ constancy of mbedtls_ssl_safer_memcmp().
+ * Ensure that buffers are cleared after use if they contain sensitive data.
+ Changes were introduced in multiple places in the library.
+ * Set PEM buffer to zero before freeing it, to avoid decoded private keys
+ being leaked to memory after release.
+ * Fix dhm_check_range() failing to detect trivial subgroups and potentially
+ leaking 1 bit of the private key. Reported by prashantkspatil.
+ * Make mbedtls_mpi_read_binary() constant-time with respect to the input
+ data. Previously, trailing zero bytes were detected and omitted for the
+ sake of saving memory, but potentially leading to slight timing
+ differences. Reported by Marco Macchetti, Kudelski Group.
+ * Wipe stack buffer temporarily holding EC private exponent
+ after keypair generation.
+ * Fix a potential heap buffer over-read in ALPN extension parsing
+ (server-side). Could result in application crash, but only if an ALPN
+ name larger than 16 bytes had been configured on the server.
+ * Change default choice of DHE parameters from untrustworthy RFC 5114
+ to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
+ manner.
+
+Features
+ * Allow comments in test data files.
+ * The selftest program can execute a subset of the tests based on command
+ line arguments.
+ * New unit tests for timing. Improve the self-test to be more robust
+ when run on a heavily-loaded machine.
+ * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
+ MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
+ * Add support for alternative implementations of GCM, selected by the
+ configuration flag MBEDTLS_GCM_ALT.
+ * Add support for alternative implementations for ECDSA, controlled by new
+ configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
+ MBEDTLS_ECDSDA_GENKEY_AT in config.h.
+ The following functions from the ECDSA module can be replaced
+ with alternative implementation:
+ mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
+ * Add support for alternative implementation of ECDH, controlled by the
+ new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
+ MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
+ The following functions from the ECDH module can be replaced
+ with an alternative implementation:
+ mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
+ * Add support for alternative implementation of ECJPAKE, controlled by
+ the new configuration flag MBEDTLS_ECJPAKE_ALT.
+ * Add mechanism to provide alternative implementation of the DHM module.
+
+API Changes
+ * Extend RSA interface by multiple functions allowing structure-
+ independent setup and export of RSA contexts. Most notably,
+ mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
+ up RSA contexts from partial key material and having them completed to the
+ needs of the implementation automatically. This allows to setup private RSA
+ contexts from keys consisting of N,D,E only, even if P,Q are needed for the
+ purpose or CRT and/or blinding.
+ * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
+ implementations of the RSA interface declared in rsa.h.
+ * The following functions in the message digest modules (MD2, MD4, MD5,
+ SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
+ The new functions change the return type from void to int to allow
+ returning error codes when using MBEDTLS_<MODULE>_ALT.
+ mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
+ mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
+ mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
+ mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
+
+New deprecations
+ * Deprecate usage of RSA primitives with non-matching key-type
+ (e.g. signing with a public key).
+ * Direct manipulation of structure fields of RSA contexts is deprecated.
+ Users are advised to use the extended RSA API instead.
+ * Deprecate usage of message digest functions that return void
+ (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
+ mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
+ any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
+ that can return an error code.
+ * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
+ parameters from RFC 3526 or the newly added parameters from RFC 7919.
+ * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
+ Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
+ etc.
+ * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
+ from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
+ accepting DHM parameters in binary form, matching the new constants.
+
+Bugfix
+ * Fix ssl_parse_record_header() to silently discard invalid DTLS records
+ as recommended in RFC 6347 Section 4.1.2.7.
+ * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
+ Found by projectgus and Jethro Beekman, #836.
+ * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
+ * Parse signature algorithm extension when renegotiating. Previously,
+ renegotiated handshakes would only accept signatures using SHA-1
+ regardless of the peer's preferences, or fail if SHA-1 was disabled.
+ * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
+ dates on leap years with 100 and 400 intervals are handled correctly. Found
+ by Nicholas Wilson. #694
+ * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
+ accepted. Generating these signatures required the private key.
+ * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
+ Found independently by Florian in the mbed TLS forum and by Mishamax.
+ #878, #1019.
+ * Fix variable used before assignment compilation warnings with IAR
+ toolchain. Found by gkerrien38.
+ * Fix unchecked return codes from AES, DES and 3DES functions in
+ pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
+ If a call to one of the functions of the cryptographic primitive modules
+ failed, the error may not be noticed by the function
+ mbedtls_pem_read_buffer() causing it to return invalid values. Found by
+ Guido Vranken. #756
+ * Include configuration file in md.h, to fix compilation warnings.
+ Reported by aaronmdjones in #1001
+ * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
+ writing routines that prevented these functions to work with alternative
+ RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
+ * Don't print X.509 version tag for v1 CRT's, and omit extensions for
+ non-v3 CRT's.
+ * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
+ * Fix net_would_block() to avoid modification by errno through fcntl() call.
+ Found by nkolban. Fixes #845.
+ * Fix handling of handshake messages in mbedtls_ssl_read() in case
+ MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
+ * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
+ Reported by Yolan Romailler.
+ * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
+ * Fix incorrect unit in benchmark output. #850
+ * Add size-checks for record and handshake message content, securing
+ fragile yet non-exploitable code-paths.
+ * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
+ MilenkoMitrovic, #1104
+ * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
+ * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
+ * Fix possible memory leaks in mbedtls_gcm_self_test().
+ * Added missing return code checks in mbedtls_aes_self_test().
+ * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
+ RSA test suite where the failure of CTR DRBG initialization lead to
+ freeing an RSA context and several MPI's without proper initialization
+ beforehand.
+ * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
+ * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
+ Found and fixed by Martijn de Milliano.
+ * Fix an issue in the cipher decryption with the mode
+ MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
+ Note, this padding mode is not used by the TLS protocol. Found and fixed by
+ Micha Kraus.
+ * Fix the entropy.c module to not call mbedtls_sha256_starts() or
+ mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
+ * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
+ mbedtls_sha512_init() is called before operating on the relevant context
+ structure. Do not assume that zeroizing a context is a correct way to
+ reset it. Found independently by ccli8 on Github.
+ * In mbedtls_entropy_free(), properly free the message digest context.
+ * Fix status handshake status message in programs/ssl/dtls_client.c. Found
+ and fixed by muddog.
+
+Changes
+ * Extend cert_write example program by options to set the certificate version
+ and the message digest. Further, allow enabling/disabling of authority
+ identifier, subject identifier and basic constraints extensions.
+ * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
+ particular, don't require P,Q if neither CRT nor blinding are
+ used. Reported and fix proposed independently by satur9nine and sliai
+ on GitHub.
+ * Only run AES-192 self-test if AES-192 is available. Fixes #963.
+ * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
+ undeclared dependency of the RSA module on the ASN.1 module.
+ * Update all internal usage of deprecated message digest functions to the
+ new ones with return codes. In particular, this modifies the
+ mbedtls_md_info_t structure. Propagate errors from these functions
+ everywhere except some locations in the ssl_tls.c module.
+ * Improve CTR_DRBG error handling by propagating underlying AES errors.
+ * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
+ modules where the software implementation can be replaced by a hardware
+ implementation.
+ * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
+ throughout the library.
+
+= mbed TLS 2.6.0 branch released 2017-08-10
+
+Security
+ * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
- (default: 8) intermediates, even when it was not trusted. Could be
- triggered remotely on both sides. (With auth_mode set to required
- (default), the handshake was correctly aborted.)
+ (default: 8) intermediates, even when it was not trusted. This could be
+ triggered remotely from either side. (With authmode set to 'required'
+ (the default), the handshake was correctly aborted).
+ * Reliably wipe sensitive data after use in the AES example applications
+ programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
+ Found by Laurent Simon.
Features
* Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
and the context struct mbedtls_platform_context to perform
platform-specific setup and teardown operations. The macro
MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
- by the user in a platform_alt.h file. This new APIs are required in some
- embedded environments that have hardware acceleration support.
+ by the user in a platform_alt.h file. These new functions are required in
+ some embedded environments to provide a means of initialising underlying
+ cryptographic acceleration hardware.
API Changes
* Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
API consistent with mbed TLS 2.5.0. Specifically removed the inline
qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
- mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. #978
- Found by James Cowgill.
+ mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
+ by James Cowgill. #978
* Certificate verification functions now set flags to -1 in case the full
chain was not verified due to an internal error (including in the verify
callback) or chain length limitations.
- * With authmode set to optional, handshake is now aborted if the
+ * With authmode set to optional, the TLS handshake is now aborted if the
verification of the peer's certificate failed due to an overlong chain or
- a fatal error in the vrfy callback.
+ a fatal error in the verify callback.
Bugfix
- * Add a check if iv_len is zero, and return an error if it is zero. reported
- by roberto. #716
- * Replace preproccessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
+ * Add a check if iv_len is zero in GCM, and return an error if it is zero.
+ Reported by roberto. #716
+ * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
- always be implemented by pthread support. Fix for #696
- * Fix resource leak on windows platform, in mbedtls_x509_crt_parse_path.
- In case of failure, when an error occures, goto cleanup.
- Found by redplait #590
+ always be implemented by pthread support. #696
+ * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
+ in the case of an error. Found by redplait. #590
* Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
- Reported and fix suggested by guidovranken in #740
+ Reported and fix suggested by guidovranken. #740
* Fix conditional preprocessor directives in bignum.h to enable 64-bit
compilation when using ARM Compiler 6.
* Fix a potential integer overflow in the version verification for DER
- encoded X509 CRLs. The overflow would enable maliciously constructed CRLs
+ encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
KNOX Security, Samsung Research America
* Fix potential integer overflow in the version verification for DER
- encoded X509 CSRs. The overflow would enable maliciously constructed CSRs
+ encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
KNOX Security, Samsung Research America
* Fix a potential integer overflow in the version verification for DER
- encoded X509 certificates. The overflow would enable maliciously
+ encoded X.509 certificates. The overflow could enable maliciously
constructed certificates to bypass the certificate verification check.
+ * Fix a call to the libc function time() to call the platform abstraction
+ function mbedtls_time() instead. Found by wairua. #666
+ * Avoid shadowing of time and index functions through mbed TLS function
+ arguments. Found by inestlerode. #557.
Changes
* Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
- 64-bit division. #708
+ 64-bit division. This is useful on embedded platforms where 64-bit division
+ created a dependency on external libraries. #708
* Removed mutexes from ECP hardware accelerator code. Now all hardware
accelerator code in the library leaves concurrency handling to the
platform. Reported by Steven Cooreman. #863
* Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
config-no-entropy.h to reduce the RAM footprint.
+ * Added a test script that can be hooked into git that verifies commits
+ before they are pushed.
+ * Improve documentation of PKCS1 decryption functions.
= mbed TLS 2.5.1 released 2017-06-21
@@ -105,8 +551,7 @@
Previous behaviour was to keep processing data even after the alert has
been sent.
* Accept empty trusted CA chain in authentication mode
- MBEDTLS_SSL_VERIFY_OPTIONAL.
- Found by jethrogb. #864
+ MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
* Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
reflect bad EC curves within verification result.
@@ -1308,7 +1753,7 @@
issuer_key_identifier, etc)
* Optional blinding for RSA, DHM and EC
* Support for multiple active certificate / key pairs in SSL servers for
- the same host (Not to be confused with SNI!)
+ the same host (Not to be confused with SNI!)
Changes
* Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
@@ -1539,7 +1984,7 @@
PKCS#8 private key formats
* Added mechanism to provide alternative implementations for all
symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
- config.h)
+ config.h)
* PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
old PBKDF2 module
@@ -1551,7 +1996,7 @@
* x509parse_crt() now better handles PEM error situations
* ssl_parse_certificate() now calls x509parse_crt_der() directly
instead of the x509parse_crt() wrapper that can also parse PEM
- certificates
+ certificates
* x509parse_crtpath() is now reentrant and uses more portable stat()
* Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
* Fixed values for 2-key Triple DES in cipher layer
@@ -1709,7 +2154,7 @@
* mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
#52)
* Handle encryption with private key and decryption with public key as per
- RFC 2313
+ RFC 2313
* Handle empty certificate subject names
* Prevent reading over buffer boundaries on X509 certificate parsing
* mpi_add_abs() now correctly handles adding short numbers to long numbers
@@ -1740,7 +2185,7 @@
* x509parse_crt() now better handles PEM error situations
* ssl_parse_certificate() now calls x509parse_crt_der() directly
instead of the x509parse_crt() wrapper that can also parse PEM
- certificates
+ certificates
* Fixed values for 2-key Triple DES in cipher layer
* ssl_write_certificate_request() can handle empty ca_chain
@@ -1821,16 +2266,16 @@
Features
* Added ssl_session_reset() to allow better multi-connection pools of
SSL contexts without needing to set all non-connection-specific
- data and pointers again. Adapted ssl_server to use this functionality.
+ data and pointers again. Adapted ssl_server to use this functionality.
* Added ssl_set_max_version() to allow clients to offer a lower maximum
supported version to a server to help buggy server implementations.
- (Closes ticket #36)
+ (Closes ticket #36)
* Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
introspection functions (Closes ticket #40)
* Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
* Added a generic entropy accumulator that provides support for adding
custom entropy sources and added some generic and platform dependent
- entropy sources
+ entropy sources
Changes
* Documentation for AES and Camellia in modes CTR and CFB128 clarified.
@@ -1963,7 +2408,7 @@
* Corrected parsing of UTCTime dates before 1990 and
after 1950
* Support more exotic OID's when parsing certificates
- (found by Mads Kiilerich)
+ (found by Mads Kiilerich)
* Support more exotic name representations when parsing
certificates (found by Mads Kiilerich)
* Replaced the expired test certificates
@@ -1993,7 +2438,7 @@
status, objects and configuration
+ Added verification callback on certificate chain
verification to allow external blacklisting
- + Additional example programs to show usage
+ + Additional example programs to show usage
* Added support for PKCS#11 through the use of the
libpkcs11-helper library