Remove ChangeLog
Periodic release notes and git history will work fine and be easier to
maintain.
diff --git a/ChangeLog b/ChangeLog
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-mbed TLS ChangeLog (Sorted per branch, date)
-
-= mbed TLS x.x.x branch released xxxx-xx-xx
-
-Features
- * Add the Any Policy certificate policy oid, as defined in
- rfc 5280 section 4.2.1.4.
- * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
- Contributed by Jack Lloyd and Fortanix Inc.
- * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
- * Add the oid certificate policy x509 extension.
-
-Bugfix
- * Fix private key DER output in the key_app_writer example. File contents
- were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
- Christian Walther in #2239.
- * Fix potential memory leak in X.509 self test. Found and fixed by
- Junhwan Park, #2106.
- * Reduce stack usage of hkdf tests. Fixes #2195.
- * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
- used with negative inputs. Found by Guido Vranken in #2404. Credit to
- OSS-Fuzz.
- * Fix bugs in the AEAD test suite which would be exposed by ciphers which
- either used both encrypt and decrypt key schedules, or which perform padding.
- GCM and CCM were not affected. Fixed by Jack Lloyd.
- * Fix incorrect default port number in ssl_mail_client example's usage.
- Found and fixed by irwir. #2337
- * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
- Fixed by Peter Kolbus (Garmin). #2579
-
-Changes
- * Server's RSA certificate in certs.c was SHA-1 signed. In the default
- mbedTLS configuration only SHA-2 signed certificates are accepted.
- This certificate is used in the demo server programs, which lead the
- client programs to fail at the peer's certificate verification
- due to an unacceptable hash signature. The certificate has been
- updated to one that is SHA-256 signed. Fix contributed by
- Illya Gerasymchuk.
- * Return from various debugging routines immediately if the
- provided SSL context is unset.
- * Remove dead code from bignum.c in the default configuration.
- Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
- * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
- Contributed by Peter Kolbus (Garmin).
-
-= mbed TLS 2.17.0 branch released 2019-03-19
-
-Features
- * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
- which allows copy-less parsing of DER encoded X.509 CRTs,
- at the cost of additional lifetime constraints on the input
- buffer, but at the benefit of reduced RAM consumption.
- * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
- named bitstring in DER as required by RFC 5280 Appendix B.
- * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
- from the default list (enabled by default). See
- https://sweet32.info/SWEET32_CCS16.pdf.
-
-API Changes
- * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
- See the Features section for more information.
- * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
- for the benefit of saving RAM, by disabling the new compile-time
- option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
- API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
- always return NULL, and removes the peer_cert field from the
- mbedtls_ssl_session structure which otherwise stores the peer's
- certificate.
-
-Security
- * Make mbedtls_ecdh_get_params return an error if the second key
- belongs to a different group from the first. Before, if an application
- passed keys that belonged to different group, the first key's data was
- interpreted according to the second group, which could lead to either
- an error or a meaningless output from mbedtls_ecdh_get_params. In the
- latter case, this could expose at most 5 bits of the private key.
-
-Bugfix
- * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
- when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
- * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
- Raised as a comment in #1996.
- * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
- previously lead to a stack overflow on constrained targets.
- * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
- in the header files, which missed the precompilation check. #971
- * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
- * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
- * Remove the mbedtls namespacing from the header file, to fix a "file not found"
- build error. Fixed by Haijun Gu #2319.
- * Fix signed-to-unsigned integer conversion warning
- in X.509 module. Fixes #2212.
- * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
- Fixes #2190.
- * Fix false failure in all.sh when backup files exist in include/mbedtls
- (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
- * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
- mbedtls_asn1_write_bitstring().
- * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
- extensions in CSRs and CRTs that caused these bitstrings to not be encoded
- correctly as trailing zeroes were not accounted for as unused bits in the
- leading content octet. Fixes #1610.
-
-Changes
- * Reduce RAM consumption during session renegotiation by not storing
- the peer CRT chain and session ticket twice.
- * Include configuration file in all header files that use configuration,
- instead of relying on other header files that they include.
- Inserted as an enhancement for #1371
- * Add support for alternative CSR headers, as used by Microsoft and defined
- in RFC 7468. Found by Michael Ernst. Fixes #767.
- * Correct many misspellings. Fixed by MisterDA #2371.
- * Provide an abstraction of vsnprintf to allow alternative implementations
- for platforms that don't provide it. Based on contributions by Joris Aerts
- and Nathaniel Wesley Filardo.
- * Fix clobber list in MIPS assembly for large integer multiplication.
- Previously, this could lead to functionally incorrect assembly being
- produced by some optimizing compilers, showing up as failures in
- e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
- by Aurelien Jarno and submitted by Jeffrey Martin.
- * Reduce the complexity of the timing tests. They were assuming more than the
- underlying OS actually guarantees.
- * Fix configuration queries in ssl-opt.h. #2030
- * Ensure that ssl-opt.h can be run in OS X. #2029
- * Re-enable certain interoperability tests in ssl-opt.sh which had previously
- been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
- * Ciphersuites based on 3DES now have the lowest priority by default when
- they are enabled.
-
-= mbed TLS 2.16.0 branch released 2018-12-21
-
-Features
- * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
- of parameters in the API. This allows detection of obvious misuses of the
- API, such as passing NULL pointers. The API of existing functions hasn't
- changed, but requirements on parameters have been made more explicit in
- the documentation. See the corresponding API documentation for each
- function to see for which parameter values it is defined. This feature is
- disabled by default. See its API documentation in config.h for additional
- steps you have to take when enabling it.
-
-API Changes
- * The following functions in the random generator modules 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 for the underlying AES or message digest
- primitive. Fixes #1798.
- mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
- mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
- * Extend ECDH interface to enable alternative implementations.
- * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
- ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
- the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
- * Additional parameter validation checks have been added for the following
- modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
- ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
- Where modules have had parameter validation added, existing parameter
- checks may have changed. Some modules, such as Chacha20 had existing
- parameter validation whereas other modules had little. This has now been
- changed so that the same level of validation is present in all modules, and
- that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
- is off. That means that checks which were previously present by default
- will no longer be.
-
-New deprecations
- * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
- in favor of functions that can return an error code.
-
-Bugfix
- * Fix for Clang, which was reporting a warning for the bignum.c inline
- assembly for AMD64 targets creating string literals greater than those
- permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
- * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
- through qemu user emulation. Reported and fix suggested by randombit
- in #1212. Fixes #1212.
- * Fix an unsafe bounds check when restoring an SSL session from a ticket.
- This could lead to a buffer overflow, but only in case ticket authentication
- was broken. Reported and fix suggested by Guido Vranken in #659.
- * Add explicit integer to enumeration type casts to example program
- programs/pkey/gen_key which previously led to compilation failure
- on some toolchains. Reported by phoenixmcallister. Fixes #2170.
- * Fix double initialization of ECC hardware that made some accelerators
- hang.
- * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
- of check for certificate/key matching. Reported by Attila Molnar, #507.
-
- = mbed TLS 2.15.1 branch released 2018-11-30
-
- Changes
- * Update the Mbed Crypto submodule to version 0.1.0b2.
-
- = mbed TLS 2.15.0 branch released 2018-11-23
-
- Features
- * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
- Mbed Crypto as the source of the cryptography implementation.
- * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
- the PSA Crypto API from Mbed Crypto when additionally used with the
- USE_CRYPTO_SUBMODULE build option.
-
- Changes
- * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
- from the cipher abstraction layer. Fixes #2198.
-
-= mbed TLS 2.14.1 branch released 2018-11-30
-
-Security
- * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
- decryption that could lead to a Bleichenbacher-style padding oracle
- attack. In TLS, this affects servers that accept ciphersuites based on
- RSA decryption (i.e. ciphersuites whose name contains RSA but not
- (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
- (University of Adelaide), Daniel Genkin (University of Michigan),
- Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
- (University of Adelaide, Data61). The attack is described in more detail
- in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
- * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
- via branching and memory access patterns. An attacker who could submit
- a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
- of the decryption and not its result could nonetheless decrypt RSA
- plaintexts and forge RSA signatures. Other asymmetric algorithms may
- have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
- Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
- * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
- modules.
-
-API Changes
- * The new functions mbedtls_ctr_drbg_update_ret() and
- mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
- and mbedtls_hmac_drbg_update() respectively, but the new functions
- report errors whereas the old functions return void. We recommend that
- applications use the new functions.
-
-= mbed TLS 2.14.0 branch released 2018-11-19
-
-Security
- * Fix overly strict DN comparison when looking for CRLs belonging to a
- particular CA. This previously led to ignoring CRLs when the CRL's issuer
- name and the CA's subject name differed in their string encoding (e.g.,
- one using PrintableString and the other UTF8String) or in the choice of
- upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
- #1784.
- * Fix a flawed bounds check in server PSK hint parsing. In case the
- incoming message buffer was placed within the first 64KiB of address
- space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
- to trigger a memory access up to 64KiB beyond the incoming message buffer,
- potentially leading to an application crash or information disclosure.
- * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
- previous settings for the number of rounds made it practical for an
- adversary to construct non-primes that would be erroneously accepted as
- primes with high probability. This does not have an impact on the
- security of TLS, but can matter in other contexts with numbers chosen
- potentially by an adversary that should be prime and can be validated.
- For example, the number of rounds was enough to securely generate RSA key
- pairs or Diffie-Hellman parameters, but was insufficient to validate
- Diffie-Hellman parameters properly.
- See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
- Kenneth G. Paterson and Juraj Somorovsky.
-
-Features
- * Add support for temporarily suspending expensive ECC computations after
- some configurable amount of operations. This is intended to be used in
- constrained, single-threaded systems where ECC is time consuming and can
- block other operations until they complete. This is disabled by default,
- but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
- configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
- xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
- yet), and to existing functions in ECDH and SSL (currently only
- implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
- including client authentication).
- * Add support for Arm CPU DSP extensions to accelerate asymmetric key
- operations. On CPUs where the extensions are available, they can accelerate
- MPI multiplications used in ECC and RSA cryptography. Contributed by
- Aurelien Jarno.
- * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
- signature always used a salt with the same length as the hash, and returned
- an error if this was not possible. Now the salt size may be up to two bytes
- shorter. This allows the library to support all hash and signature sizes
- that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
- * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
- than 256 bits limits the security of generated material to 128 bits.
-
-API Changes
- * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
- a feature that is not supported by underlying alternative
- implementations implementing cryptographic primitives. This is useful for
- hardware accelerators that don't implement all options or features.
-
-New deprecations
- * All module specific errors following the form
- MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
- supported are deprecated and are now replaced by the new equivalent
- platform error.
- * All module specific generic hardware acceleration errors following the
- form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
- by the equivalent plaform error.
- * Deprecate the function mbedtls_mpi_is_prime() in favor of
- mbedtls_mpi_is_prime_ext() which allows specifying the number of
- Miller-Rabin rounds.
-
-Bugfix
- * Fix wrong order of freeing in programs/ssl/ssl_server2 example
- application leading to a memory leak in case both
- MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
- Fixes #2069.
- * Fix a bug in the update function for SSL ticket keys which previously
- invalidated keys of a lifetime of less than a 1s. Fixes #1968.
- * Fix failure in hmac_drbg in the benchmark sample application, when
- MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
- * Fix a bug in the record decryption routine ssl_decrypt_buf()
- which lead to accepting properly authenticated but improperly
- padded records in case of CBC ciphersuites using Encrypt-then-MAC.
- * Fix memory leak and freeing without initialization in the example
- program programs/x509/cert_write. Fixes #1422.
- * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
- MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
- * Zeroize memory used for buffering or reassembling handshake messages
- after use.
- * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
- of sensitive data in the example programs aescrypt2 and crypt_and_hash.
- * Change the default string format used for various X.509 DN attributes to
- UTF8String. Previously, the use of the PrintableString format led to
- wildcards and non-ASCII characters being unusable in some DN attributes.
- Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
- Thomas-Dee.
- * Fix compilation failure for configurations which use compile time
- replacements of standard calloc/free functions through the macros
- MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
- Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
-
-Changes
- * Removed support for Yotta as a build tool.
- * Add tests for session resumption in DTLS.
- * Close a test gap in (D)TLS between the client side and the server side:
- test the handling of large packets and small packets on the client side
- in the same way as on the server side.
- * Change the dtls_client and dtls_server samples to work by default over
- IPv6 and optionally by a build option over IPv4.
- * Change the use of Windows threading to use Microsoft Visual C++ runtime
- calls, rather than Win32 API calls directly. This is necessary to avoid
- conflict with C runtime usage. Found and fixed by irwir.
- * Remember the string format of X.509 DN attributes when replicating
- X.509 DNs. Previously, DN attributes were always written in their default
- string format (mostly PrintableString), which could lead to CRTs being
- created which used PrintableStrings in the issuer field even though the
- signing CA used UTF8Strings in its subject field; while X.509 compliant,
- such CRTs were rejected in some applications, e.g. some versions of
- Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
- Thomas-Dee.
- * Improve documentation of mbedtls_ssl_get_verify_result().
- Fixes #517 reported by github-monoculture.
- * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
- use it to reduce error probability in RSA key generation to levels mandated
- by FIPS-186-4.
-
-= mbed TLS 2.13.1 branch released 2018-09-06
-
-API Changes
- * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
- whose implementation should behave as a thread-safe version of gmtime().
- This allows users to configure such an implementation at compile time when
- the target system cannot be deduced automatically, by setting the option
- MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
- automatically select implementations for Windows and POSIX C libraries.
-
-Bugfix
- * Fix build failures on platforms where only gmtime() is available but
- neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
-
-= mbed TLS 2.13.0 branch released 2018-08-31
-
-Security
- * Fix an issue in the X.509 module which could lead to a buffer overread
- during certificate extensions parsing. In case of receiving malformed
- input (extensions length field equal to 0), an illegal read of one byte
- beyond the input buffer is made. Found and analyzed by Nathan Crandall.
-
-Features
- * Add support for fragmentation of outgoing DTLS handshake messages. This
- is controlled by the maximum fragment length as set locally or negotiated
- with the peer, as well as by a new per-connection MTU option, set using
- mbedtls_ssl_set_mtu().
- * Add support for auto-adjustment of MTU to a safe value during the
- handshake when flights do not get through (RFC 6347, section 4.1.1.1,
- last paragraph).
- * Add support for packing multiple records within a single datagram,
- enabled by default.
- * Add support for buffering out-of-order handshake messages in DTLS.
- The maximum amount of RAM used for this can be controlled by the
- compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
- in mbedtls/config.h.
-
-API Changes
- * Add function mbedtls_ssl_set_datagram_packing() to configure
- the use of datagram packing (enabled by default).
-
-Bugfix
- * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
- failure in the function could lead to other buffers being leaked.
- * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
- MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
- * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
- Fix contributed by Espressif Systems.
- * Add ecc extensions only if an ecc based ciphersuite is used.
- This improves compliance to RFC 4492, and as a result, solves
- interoperability issues with BouncyCastle. Raised by milenamil in #1157.
- * Replace printf with mbedtls_printf in the ARIA module. Found by
- TrinityTonic in #1908.
- * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
- and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
- * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
- with TLS versions 1.1 and earlier when the server requested authentication
- without providing a list of CAs. This was due to an overly strict bounds
- check in parsing the CertificateRequest message,
- introduced in Mbed TLS 2.12.0. Fixes #1954.
- * Fix a miscalculation of the maximum record expansion in
- mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
- or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
- * Fix undefined shifts with negative values in certificates parsing
- (found by Catena cyber using oss-fuzz)
- * Fix memory leak and free without initialization in pk_encrypt
- and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
- * Remove redundant else statement. Raised by irwir. Fixes #1776.
-
-Changes
- * Copy headers preserving timestamps when doing a "make install".
- Contributed by xueruini.
- * Allow the forward declaration of public structs. Contributed by Dawid
- Drozd. Fixes #1215 raised by randombit.
- * Improve compatibility with some alternative CCM implementations by using
- CCM test vectors from RAM.
- * Add support for buffering of out-of-order handshake messages.
- * Add warnings to the documentation of the HKDF module to reduce the risk
- of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
- functions. Fixes #1775. Reported by Brian J. Murray.
-
-= mbed TLS 2.12.0 branch released 2018-07-25
-
-Security
- * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
- in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
- partially recover the plaintext of messages under some conditions by
- exploiting timing measurements. With DTLS, the attacker could perform
- this recovery by sending many messages in the same connection. With TLS
- or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
- worked if the same secret (for example a HTTP Cookie) has been repeatedly
- sent over connections manipulated by the attacker. Connections using GCM
- or CCM instead of CBC, using hash sizes other than SHA-384, or using
- Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
- caused by a miscalculation (for SHA-384) in a countermeasure to the
- original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
- Shamir.
- * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
- 1.2, that allowed a local attacker, able to execute code on the local
- machine as well as manipulate network packets, to partially recover the
- plaintext of messages under some conditions by using a cache attack
- targeting an internal MD/SHA buffer. With TLS or if
- mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
- the same secret (for example a HTTP Cookie) has been repeatedly sent over
- connections manipulated by the attacker. Connections using GCM or CCM
- instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
- Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
- * Add a counter-measure against a vulnerability in TLS ciphersuites based
- on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
- execute code on the local machine as well as manipulate network packets,
- to partially recover the plaintext of messages under some conditions (see
- previous entry) by using a cache attack targeting the SSL input record
- buffer. Connections using GCM or CCM instead of CBC or using
- Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
- Eyal Ronen and Adi Shamir.
-
-Features
- * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
- authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
- by Daniel King.
- * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
- * Add platform support for the Haiku OS. (https://www.haiku-os.org).
- Contributed by Augustin Cavalier.
- * Make the receive and transmit buffers independent sizes, for situations
- where the outgoing buffer can be fixed at a smaller size than the incoming
- buffer, which can save some RAM. If buffer lengths are kept equal, there
- is no functional difference. Contributed by Angus Gratton, and also
- independently contributed again by Paul Sokolovsky.
- * Add support for key wrapping modes based on AES as defined by
- NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
-
-Bugfix
- * Fix the key_app_writer example which was writing a leading zero byte which
- was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
- * Fix compilation error on C++, because of a variable named new.
- Found and fixed by Hirotaka Niisato in #1783.
- * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
- contributed by tabascoeye.
- * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
- return value. Found by @davidwu2000. #839
- * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
- Philippe Antoine. Fixes #1623.
- * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
- by Brendan Shanks. Part of a fix for #992.
- * Fix compilation error when MBEDTLS_ARC4_C is disabled and
- MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
- * Added length checks to some TLS parsing functions. Found and fixed by
- Philippe Antoine from Catena cyber. #1663.
- * Fix the inline assembly for the MPI multiply helper function for i386 and
- i386 with SSE2. Found by László Langó. Fixes #1550
- * Fix namespacing in header files. Remove the `mbedtls` namespacing in
- the `#include` in the header files. Resolves #857
- * Fix compiler warning of 'use before initialisation' in
- mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
- Drozd. #1098
- * Fix decryption for zero length messages (which contain all padding) when a
- CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
- such a message was wrongly reported as an invalid record and therefore lead
- to the connection being terminated. Seen most often with OpenSSL using
- TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
- contributed by Espressif Systems. Fixes #1632
- * Fix ssl_client2 example to send application data with 0-length content
- when the request_size argument is set to 0 as stated in the documentation.
- Fixes #1833.
- * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
- deep copy of the session, and the peer certificate is not lost. Fixes #926.
- * Fix build using -std=c99. Fixed by Nick Wilson.
-
-Changes
- * Fail when receiving a TLS alert message with an invalid length, or invalid
- zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
- * Change the default behaviour of mbedtls_hkdf_extract() to return an error
- when calling with a NULL salt and non-zero salt_len. Contributed by
- Brian J Murray
- * Change the shebang line in Perl scripts to look up perl in the PATH.
- Contributed by fbrosson.
- * Allow overriding the time on Windows via the platform-time abstraction.
- Fixed by Nick Wilson.
- * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
-
-= mbed TLS 2.11.0 branch released 2018-06-18
-
-Features
- * Add additional block mode, OFB (Output Feedback), to the AES module and
- cipher abstraction module.
- * Implement the HMAC-based extract-and-expand key derivation function
- (HKDF) per RFC 5869. Contributed by Thomas Fossati.
- * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
- * Add support for the XTS block cipher mode with AES (AES-XTS).
- Contributed by Aorimn in pull request #414.
- * In TLS servers, support offloading private key operations to an external
- cryptoprocessor. Private key operations can be asynchronous to allow
- non-blocking operation of the TLS server stack.
-
-Bugfix
- * Fix the cert_write example to handle certificates signed with elliptic
- curves as well as RSA. Fixes #777 found by dbedev.
- * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
- used by user applications. Found and fixed by Fabio Alessandrelli.
- * Fix compilation warnings with IAR toolchain, on 32 bit platform.
- Reported by rahmanih in #683
- * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
-
-Changes
- * Changed CMake defaults for IAR to treat all compiler warnings as errors.
- * Changed the Clang parameters used in the CMake build files to work for
- versions later than 3.6. Versions of Clang earlier than this may no longer
- work. Fixes #1072
-
-= 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 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. 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. 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. 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, 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 verify callback.
-
-Bugfix
- * 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. #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. #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 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 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 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. 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
-
-Security
- * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
- The issue could only happen client-side with renegotiation enabled.
- Could result in DoS (application crash) or information leak
- (if the application layer sent data read from mbedtls_ssl_read()
- back to the server or to a third party). Can be triggered remotely.
- * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
- certificate verification. SHA-1 can be turned back on with a compile-time
- option if needed.
- * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
- detect it sometimes. Reported by Hugo Leisink. #810
- * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
- potential Bleichenbacher/BERserk-style attack.
-
-Bugfix
- * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
- valid C and they prevented the test from compiling in Visual Studio 2015
- and with GCC using the -Wpedantic compilation option.
- * Fix insufficient support for signature-hash-algorithm extension,
- resulting in compatibility problems with Chrome. Found by hfloyrd. #823
- * Fix behaviour that hid the original cause of fatal alerts in some cases
- when sending the alert failed. The fix makes sure not to hide the error
- that triggered the alert.
- * Fix SSLv3 renegotiation behaviour and stop processing data received from
- peer after sending a fatal alert to refuse a renegotiation attempt.
- 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 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.
- * Fix bug that caused the modular inversion function to accept the invalid
- modulus 1 and therefore to hang. Found by blaufish. #641.
- * Fix incorrect sign computation in modular exponentiation when the base is
- a negative MPI. Previously the result was always negative. Found by Guido
- Vranken.
- * Fix a numerical underflow leading to stack overflow in mpi_read_file()
- that was triggered uppon reading an empty line. Found by Guido Vranken.
-
-Changes
- * Send fatal alerts in more cases. The previous behaviour was to skip
- sending the fatal alert and just drop the connection.
- * Clarify ECDSA documentation and improve the sample code to avoid
- misunderstanding and potentially dangerous use of the API. Pointed out
- by Jean-Philippe Aumasson.
-
-= mbed TLS 2.5.0 branch released 2017-05-17
-
-Security
- * Wipe stack buffers in RSA private key operations
- (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
- Simon.
- * Add exponent blinding to RSA private operations as a countermeasure
- against side-channel attacks like the cache attack described in
- https://arxiv.org/abs/1702.08719v2.
- Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
- Clémentine Maurice and Stefan Mangard.
-
-Features
- * Add hardware acceleration support for the Elliptic Curve Point module.
- This involved exposing parts of the internal interface to enable
- replacing the core functions and adding and alternative, module level
- replacement support for enabling the extension of the interface.
- * Add a new configuration option to 'mbedtls_ssl_config' to enable
- suppressing the CA list in Certificate Request messages. The default
- behaviour has not changed, namely every configured CAs name is included.
-
-API Changes
- * The following functions in the AES module have been deprecated and replaced
- by the functions shown below. The new functions change the return type from
- void to int to allow returning error codes when using MBEDTLS_AES_ALT,
- MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
- mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
- mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
-
-Bugfix
- * Remove macros from compat-1.3.h that correspond to deleted items from most
- recent versions of the library. Found by Kyle Keen.
- * Fixed issue in the Threading module that prevented mutexes from
- initialising. Found by sznaider. #667 #843
- * Add checks in the PK module for the RSA functions on 64-bit systems.
- The PK and RSA modules use different types for passing hash length and
- without these checks the type cast could lead to data loss. Found by Guido
- Vranken.
-
-= mbed TLS 2.4.2 branch released 2017-03-08
-
-Security
- * Add checks to prevent signature forgeries for very large messages while
- using RSA through the PK module in 64-bit systems. The issue was caused by
- some data loss when casting a size_t to an unsigned int value in the
- functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
- mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
- * Fixed potential livelock during the parsing of a CRL in PEM format in
- mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
- characters after the footer could result in the execution of an infinite
- loop. The issue can be triggered remotely. Found by Greg Zaverucha,
- Microsoft.
- * Removed MD5 from the allowed hash algorithms for CertificateRequest and
- CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
- Introduced by interoperability fix for #513.
- * Fixed a bug that caused freeing a buffer that was allocated on the stack,
- when verifying the validity of a key on secp224k1. This could be
- triggered remotely for example with a maliciously constructed certificate
- and potentially could lead to remote code execution on some platforms.
- Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
- team. #569 CVE-2017-2784
-
-Bugfix
- * Fix output certificate verification flags set by x509_crt_verify_top() when
- traversing a chain of trusted CA. The issue would cause both flags,
- MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
- set when the verification conditions are not met regardless of the cause.
- Found by Harm Verhagen and inestlerode. #665 #561
- * Fix the redefinition of macro ssl_set_bio to an undefined symbol
- mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
- Found by omlib-lin. #673
- * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
- x509_csr.c that are reported when building mbed TLS with a config.h that
- does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
- * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
- would compare 64 bits of the record counter instead of 48 bits as indicated
- in RFC 6347 Section 4.3.1. This could cause the execution of the
- renegotiation routines at unexpected times when the protocol is DTLS. Found
- by wariua. #687
- * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
- the input string in PEM format to extract the different components. Found
- by Eyal Itkin.
- * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
- cause buffer bound checks to be bypassed. Found by Eyal Itkin.
- * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
- cause buffer bound checks to be bypassed. Found by Eyal Itkin.
- * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
- cause buffer bound checks to be bypassed. Found by Eyal Itkin.
- * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
- cause buffer bound checks to be bypassed. Found by Eyal Itkin.
- * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
- Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
- * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
- by missing calls to mbedtls_pem_free() in cases when a
- MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
- fix proposed by Guido Vranken. #722
- * Fixed the templates used to generate project and solution files for Visual
- Studio 2015 as well as the files themselves, to remove a build warning
- generated in Visual Studio 2015. Reported by Steve Valliere. #742
- * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
- Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
- * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
- number to write in hexadecimal is negative and requires an odd number of
- digits. Found and fixed by Guido Vranken.
- * Fix unlisted DES configuration dependency in some pkparse test cases. Found
- by inestlerode. #555
-
-= mbed TLS 2.4.1 branch released 2016-12-13
-
-Changes
- * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
- Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
- Authentication – October 2016
-
-= mbed TLS 2.4.0 branch released 2016-10-17
-
-Security
- * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
- with RFC-5116 and could lead to session key recovery in very long TLS
- sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
- TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
- https://eprint.iacr.org/2016/475.pdf
- * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
- mbedtls_x509write_csr_der() when the signature is copied to the buffer
- without checking whether there is enough space in the destination. The
- issue cannot be triggered remotely. Found by Jethro Beekman.
-
-Features
- * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
- NIST SP 800-38B, RFC-4493 and RFC-4615.
- * Added hardware entropy selftest to verify that the hardware entropy source
- is functioning correctly.
- * Added a script to print build environment info for diagnostic use in test
- scripts, which is also now called by all.sh.
- * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
- configure the maximum length of a file path that can be buffered when
- calling mbedtls_x509_crt_parse_path().
- * Added a configuration file config-no-entropy.h that configures the subset of
- library features that do not require an entropy source.
- * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
- to configure the minimum number of bytes for entropy sources using the
- mbedtls_hardware_poll() function.
-
-Bugfix
- * Fix for platform time abstraction to avoid dependency issues where a build
- may need time but not the standard C library abstraction, and added
- configuration consistency checks to check_config.h
- * Fix dependency issue in Makefile to allow parallel builds.
- * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
- when GCM is used. Found by udf2457. #441
- * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
- enabled unless others were also present. Found by David Fernandez. #428
- * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
- a contribution from Tobias Tangemann. #541
- * Fixed cert_app.c sample program for debug output and for use when no root
- certificates are provided.
- * Fix conditional statement that would cause a 1 byte overread in
- mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
- * Fixed pthread implementation to avoid unintended double initialisations
- and double frees. Found by Niklas Amnebratt.
- * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
- builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
- by inestlerode. #559.
- * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
- data structure until after error checks are successful. Found by
- subramanyam-c. #622
- * Fix documentation and implementation missmatch for function arguments of
- mbedtls_gcm_finish(). Found by cmiatpaar. #602
- * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
- * Fix potential byte overread when verifying malformed SERVER_HELLO in
- ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
- * Fix check for validity of date when parsing in mbedtls_x509_get_time().
- Found by subramanyam-c. #626
- * Fix compatibility issue with Internet Explorer client authentication,
- where the limited hash choices prevented the client from sending its
- certificate. Found by teumas. #513
- * Fix compilation without MBEDTLS_SELF_TEST enabled.
-
-Changes
- * Extended test coverage of special cases, and added new timing test suite.
- * Removed self-tests from the basic-built-test.sh script, and added all
- missing self-tests to the test suites, to ensure self-tests are only
- executed once.
- * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
- * Added support for a Yotta specific configuration file -
- through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
- * Added optimization for code space for X.509/OID based on configured
- features. Contributed by Aviv Palivoda.
- * Renamed source file library/net.c to library/net_sockets.c to avoid
- naming collision in projects which also have files with the common name
- net.c. For consistency, the corresponding header file, net.h, is marked as
- deprecated, and its contents moved to net_sockets.h.
- * Changed the strategy for X.509 certificate parsing and validation, to no
- longer disregard certificates with unrecognised fields.
-
-= mbed TLS 2.3.0 branch released 2016-06-28
-
-Security
- * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
- required by PKCS1 v2.2
- * Fix potential integer overflow to buffer overflow in
- mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
- (not triggerable remotely in (D)TLS).
- * Fix a potential integer underflow to buffer overread in
- mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
- SSL/TLS.
-
-Features
- * Support for platform abstraction of the standard C library time()
- function.
-
-Bugfix
- * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
- arguments where the same (in-place doubling). Found and fixed by Janos
- Follath. #309
- * Fix potential build failures related to the 'apidoc' target, introduced
- in the previous patch release. Found by Robert Scheck. #390 #391
- * Fix issue in Makefile that prevented building using armar. #386
- * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
- ECDSA was disabled in config.h . The leak didn't occur by default.
- * Fix an issue that caused valid certificates to be rejected whenever an
- expired or not yet valid certificate was parsed before a valid certificate
- in the trusted certificate list.
- * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
- buffer after DER certificates to be included in the raw representation.
- * Fix issue that caused a hang when generating RSA keys of odd bitlength
- * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
- dereference possible.
- * Fix issue that caused a crash if invalid curves were passed to
- mbedtls_ssl_conf_curves. #373
- * Fix issue in ssl_fork_server which was preventing it from functioning. #429
- * Fix memory leaks in test framework
- * Fix test in ssl-opt.sh that does not run properly with valgrind
- * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
-
-Changes
- * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
- don't use the optimized assembly for bignum multiplication. This removes
- the need to pass -fomit-frame-pointer to avoid a build error with -O0.
- * Disabled SSLv3 in the default configuration.
- * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
- Skalozub).
- * Fix non-compliance server extension handling. Extensions for SSLv3 are now
- ignored, as required by RFC6101.
-
-= mbed TLS 2.2.1 released 2016-01-05
-
-Security
- * Fix potential double free when mbedtls_asn1_store_named_data() fails to
- allocate memory. Only used for certificate generation, not triggerable
- remotely in SSL/TLS. Found by Rafał Przywara. #367
- * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
- SLOTH attack on TLS 1.2 server authentication (other attacks from the
- SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
- https://www.mitls.org/pages/attacks/SLOTH
-
-Bugfix
- * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
- * Fix bug in certificate validation that caused valid chains to be rejected
- when the first intermediate certificate has pathLenConstraint=0. Found by
- Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
- * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
- JayaraghavendranK. #372
- * Fix suboptimal handling of unexpected records that caused interop issues
- with some peers over unreliable links. Avoid dropping an entire DTLS
- datagram if a single record in a datagram is unexpected, instead only
- drop the record and look at subsequent records (if any are present) in
- the same datagram. Found by jeannotlapin. #345
-
-= mbed TLS 2.2.0 released 2015-11-04
-
-Security
- * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
- once and some allocation fails. Cannot be forced remotely. Found by Guido
- Vranken, Intelworks.
- * Fix potential heap corruption on Windows when
- mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
- triggered remotely. Found by Guido Vranken, Intelworks.
- * Fix potential buffer overflow in some asn1_write_xxx() functions.
- Cannot be triggered remotely unless you create X.509 certificates based
- on untrusted input or write keys of untrusted origin. Found by Guido
- Vranken, Intelworks.
- * The X509 max_pathlen constraint was not enforced on intermediate
- certificates. Found by Nicholas Wilson, fix and tests provided by
- Janos Follath. #280 and #319
-
-Features
- * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
- Disabled by default as the specification might still change.
- * Added a key extraction callback to accees the master secret and key
- block. (Potential uses include EAP-TLS and Thread.)
-
-Bugfix
- * Self-signed certificates were not excluded from pathlen counting,
- resulting in some valid X.509 being incorrectly rejected. Found and fix
- provided by Janos Follath. #319
- * Fix build error with configurations where ECDHE-PSK is the only key
- exchange. Found and fix provided by Chris Hammond. #270
- * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
- ECHD-ECDSA if the only key exchange. Multiple reports. #310
- * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
- not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
- * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
- size/curve against the profile. Before that, there was no way to set a
- minimum key size for end-entity certificates with RSA keys. Found by
- Matthew Page of Scannex Electronics Ltd.
- * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
- Found by Kurt Danielson. #292
- * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
- * Fix bug in ASN.1 encoding of booleans that caused generated CA
- certificates to be rejected by some applications, including OS X
- Keychain. Found and fixed by Jonathan Leroy, Inikup.
-
-Changes
- * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
- or -1.
-
-= mbed TLS 2.1.2 released 2015-10-06
-
-Security
- * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
- overflow of the hostname or session ticket. Found by Guido Vranken,
- Intelworks.
- * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
- once in the same handhake and mbedtls_ssl_conf_psk() was used.
- Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
- remotely.
- * Fix stack buffer overflow in pkcs12 decryption (used by
- mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
- Found by Guido Vranken, Intelworks. Not triggerable remotely.
- * Fix potential buffer overflow in mbedtls_mpi_read_string().
- Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
- of TLS, but might be in other uses. On 32 bit machines, requires reading a
- string of close to or larger than 1GB to exploit; on 64 bit machines, would
- require reading a string of close to or larger than 2^62 bytes.
- * Fix potential random memory allocation in mbedtls_pem_read_buffer()
- on crafted PEM input data. Found and fix provided by Guido Vranken,
- Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
- accept PEM data from an untrusted source.
- * Fix possible heap buffer overflow in base64_encoded() when the input
- buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
- Intelworks. Not trigerrable remotely in TLS.
- * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
- the same mbedtls_ssl_config object and memory allocation fails. Found by
- Guido Vranken, Intelworks. Cannot be forced remotely.
- * Fix potential heap buffer overflow in servers that perform client
- authentication against a crafted CA cert. Cannot be triggered remotely
- unless you allow third parties to pick trust CAs for client auth.
- Found by Guido Vranken, Intelworks.
-
-Bugfix
- * Fix compile error in net.c with musl libc. Found and patch provided by
- zhasha (#278).
- * Fix macroization of 'inline' keyword when building as C++. (#279)
-
-Changes
- * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
- domain names are compliant with RFC 1035.
- * Fixed paths for check_config.h in example config files. (Found by bachp)
- (#291)
-
-= mbed TLS 2.1.1 released 2015-09-17
-
-Security
- * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
- signatures. (Found by Florian Weimer, Red Hat.)
- https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
- * Fix possible client-side NULL pointer dereference (read) when the client
- tries to continue the handshake after it failed (a misuse of the API).
- (Found and patch provided by Fabian Foerg, Gotham Digital Science using
- afl-fuzz.)
-
-Bugfix
- * Fix warning when using a 64bit platform. (found by embedthis) (#275)
- * Fix off-by-one error in parsing Supported Point Format extension that
- caused some handshakes to fail.
-
-Changes
- * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
- use of mbedtls_x509_crt_profile_next. (found by NWilson)
- * When a client initiates a reconnect from the same port as a live
- connection, if cookie verification is available
- (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
- callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
- detected and mbedtls_ssl_read() will return
- MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
- handshake with the same context. (See RFC 6347 section 4.2.8.)
-
-= mbed TLS 2.1.0 released 2015-09-04
-
-Features
- * Added support for yotta as a build system.
- * Primary open source license changed to Apache 2.0 license.
-
-Bugfix
- * Fix segfault in the benchmark program when benchmarking DHM.
- * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
- Leisink).
- * Fix bug when parsing a ServerHello without extensions (found by David
- Sears).
- * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
- (found by Benoit Lecocq).
- * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
- installed (found by Rawi666).
- * Fix compile error with armcc 5 with --gnu option.
- * Fix bug in Makefile that caused programs not to be installed correctly
- (found by robotanarchy) (#232).
- * Fix bug in Makefile that prevented from installing without building the
- tests (found by robotanarchy) (#232).
- * Fix missing -static-libgcc when building shared libraries for Windows
- with make.
- * Fix link error when building shared libraries for Windows with make.
- * Fix error when loading libmbedtls.so.
- * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
- be always used (found by dcb314) (#235)
- * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
- result trying to unlock an unlocked mutex on invalid input (found by
- Fredrik Axelsson) (#257)
- * Fix -Wshadow warnings (found by hnrkp) (#240)
- * Fix memory corruption on client with overlong PSK identity, around
- SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
- Aleksandrs Saveljevs) (#238)
- * Fix unused function warning when using MBEDTLS_MDx_ALT or
- MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
- * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
-
-Changes
- * The PEM parser now accepts a trailing space at end of lines (#226).
- * It is now possible to #include a user-provided configuration file at the
- end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
- compiler's command line.
- * When verifying a certificate chain, if an intermediate certificate is
- trusted, no later cert is checked. (suggested by hannes-landeholm)
- (#220).
- * Prepend a "thread identifier" to debug messages (issue pointed out by
- Hugo Leisink) (#210).
- * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
- length.
-
-= mbed TLS 2.0.0 released 2015-07-13
-
-Features
- * Support for DTLS 1.0 and 1.2 (RFC 6347).
- * Ability to override core functions from MDx, SHAx, AES and DES modules
- with custom implementation (eg hardware accelerated), complementing the
- ability to override the whole module.
- * New server-side implementation of session tickets that rotate keys to
- preserve forward secrecy, and allows sharing across multiple contexts.
- * Added a concept of X.509 cerificate verification profile that controls
- which algorithms and key sizes (curves for ECDSA) are acceptable.
- * Expanded configurability of security parameters in the SSL module with
- mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
- * Introduced a concept of presets for SSL security-relevant configuration
- parameters.
-
-API Changes
- * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
- You now need to link to all of them if you use TLS for example.
- * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
- Some names have been further changed to make them more consistent.
- Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
- provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
- * Renamings of fields inside structures, not covered by the previous list:
- mbedtls_cipher_info_t.key_length -> key_bitlen
- mbedtls_cipher_context_t.key_length -> key_bitlen
- mbedtls_ecp_curve_info.size -> bit_size
- * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
- * The following _init() functions that could return errors have
- been split into an _init() that returns void and another function that
- should generally be the first function called on this context after init:
- mbedtls_ssl_init() -> mbedtls_ssl_setup()
- mbedtls_ccm_init() -> mbedtls_ccm_setkey()
- mbedtls_gcm_init() -> mbedtls_gcm_setkey()
- mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
- mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
- Note that for mbedtls_ssl_setup(), you need to be done setting up the
- ssl_config structure before calling it.
- * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
- ssl_set_session() and ssl_set_client_transport_id(), plus
- ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
- (see rename.pl and compat-1.3.h above) and their first argument's type
- changed from ssl_context to ssl_config.
- * ssl_set_bio() changed signature (contexts merged, order switched, one
- additional callback for read-with-timeout).
- * The following functions have been introduced and must be used in callback
- implementations (SNI, PSK) instead of their *conf counterparts:
- mbedtls_ssl_set_hs_own_cert()
- mbedtls_ssl_set_hs_ca_chain()
- mbedtls_ssl_set_hs_psk()
- * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
- using mbedtls_ssl_set_hostname().
- * mbedtls_ssl_conf_session_cache() changed prototype (only one context
- pointer, parameters reordered).
- * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
- place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
- * The SSL debug callback gained two new arguments (file name, line number).
- * Debug modes were removed.
- * mbedtls_ssl_conf_truncated_hmac() now returns void.
- * mbedtls_memory_buffer_alloc_init() now returns void.
- * X.509 verification flags are now an uint32_t. Affect the signature of:
- mbedtls_ssl_get_verify_result()
- mbedtls_x509_ctr_verify_info()
- mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
- mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
- * The following functions changed prototype to avoid an in-out length
- parameter:
- mbedtls_base64_encode()
- mbedtls_base64_decode()
- mbedtls_mpi_write_string()
- mbedtls_dhm_calc_secret()
- * In the NET module, all "int" and "int *" arguments for file descriptors
- changed type to "mbedtls_net_context *".
- * net_accept() gained new arguments for the size of the client_ip buffer.
- * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
- return void.
- * ecdsa_write_signature() gained an additional md_alg argument and
- ecdsa_write_signature_det() was deprecated.
- * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
- * Last argument of x509_crt_check_key_usage() and
- mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
- * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
- available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
- * Test certificates in certs.c are no longer guaranteed to be nul-terminated
- strings; use the new *_len variables instead of strlen().
- * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
- mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
- length parameter to include the terminating null byte for PEM input.
- * Signature of mpi_mul_mpi() changed to make the last argument unsigned
- * calloc() is now used instead of malloc() everywhere. API of platform
- layer and the memory_buffer_alloc module changed accordingly.
- (Thanks to Mansour Moufid for helping with the replacement.)
- * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
- (support for renegotiation now needs explicit enabling in config.h).
- * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
- in config.h
- * net_connect() and net_bind() have a new 'proto' argument to choose
- between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
- Their 'port' argument type is changed to a string.
- * Some constness fixes
-
-Removals
- * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
- * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
- mbedtls_ecp_muladd().
- * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
- (use generic functions from md.h)
- * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
- waiting function.
- * Removed test DHM parameters from the test certs module.
- * Removed the PBKDF2 module (use PKCS5).
- * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
- * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
- * Removed openssl.h (very partial OpenSSL compatibility layer).
- * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
- * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
- been removed (compiler is required to support 32-bit operations).
- * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
- * Removed test program o_p_test, the script compat.sh does more.
- * Removed test program ssl_test, superseded by ssl-opt.sh.
- * Removed helper script active-config.pl
-
-New deprecations
- * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
- argument (allowing memory savings if HMAC is not used)
-
-Semi-API changes (technically public, morally private)
- * Renamed a few headers to include _internal in the name. Those headers are
- not supposed to be included by users.
- * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
- * Changed pk_info_t into an opaque structure.
- * Changed cipher_base_t into an opaque structure.
- * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
- * x509_crt.key_usage changed from unsigned char to unsigned int.
- * Removed r and s from ecdsa_context
- * Removed mode from des_context and des3_context
-
-Default behavior changes
- * The default minimum TLS version is now TLS 1.0.
- * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
- default ciphersuite list returned by ssl_list_ciphersuites()
- * Support for receiving SSLv2 ClientHello is now disabled by default at
- compile time.
- * The default authmode for SSL/TLS clients is now REQUIRED.
- * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
- enabled in the default configuration, this is only noticeable if using a
- custom config.h
- * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
- * A minimum RSA key size of 2048 bits is now enforced during ceritificate
- chain verification.
- * Negotiation of truncated HMAC is now disabled by default on server too.
- * The following functions are now case-sensitive:
- mbedtls_cipher_info_from_string()
- mbedtls_ecp_curve_info_from_name()
- mbedtls_md_info_from_string()
- mbedtls_ssl_ciphersuite_from_string()
- mbedtls_version_check_feature()
-
-Requirement changes
- * The minimum MSVC version required is now 2010 (better C99 support).
- * The NET layer now unconditionnaly relies on getaddrinfo() and select().
- * Compiler is required to support C99 types such as long long and uint32_t.
-
-API changes from the 1.4 preview branch
- * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
- new prototype, and mbedtls_ssl_set_read_timeout().
- * The following functions now return void:
- mbedtls_ssl_conf_transport()
- mbedtls_ssl_conf_max_version()
- mbedtls_ssl_conf_min_version()
- * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
- instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
- an example implementation, see mbedtls_timing_delay_context and
- mbedtls_timing_set/get_delay().
- * With UDP sockets, it is no longer necessary to call net_bind() again
- after a successful net_accept().
-
-Changes
- * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
- thread-safe if MBEDTLS_THREADING_C is enabled.
- * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
- more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
-
-= mbed TLS 1.3 branch
-
-Security
- * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
- extendedKeyUsage on the leaf certificate was lost (results not accessible
- via ssl_get_verify_results()).
- * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
- https://dl.acm.org/citation.cfm?id=2714625
-
-Features
- * Improve ECC performance by using more efficient doubling formulas
- (contributed by Peter Dettman).
- * Add x509_crt_verify_info() to display certificate verification results.
- * Add support for reading DH parameters with privateValueLength included
- (contributed by Daniel Kahn Gillmor).
- * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
- * Add support for id-at-uniqueIdentifier in X.509 names.
- * Add support for overriding snprintf() (except on Windows) and exit() in
- the platform layer.
- * Add an option to use macros instead of function pointers in the platform
- layer (helps get rid of unwanted references).
- * Improved Makefiles for Windows targets by fixing library targets and making
- cross-compilation easier (thanks to Alon Bar-Lev).
- * The benchmark program also prints heap usage for public-key primitives
- if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
- * New script ecc-heap.sh helps measuring the impact of ECC parameters on
- speed and RAM (heap only for now) usage.
- * New script memory.sh helps measuring the ROM and RAM requirements of two
- reduced configurations (PSK-CCM and NSA suite B).
- * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
- warnings on use of deprecated functions (with GCC and Clang only).
- * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
- errors on use of deprecated functions.
-
-Bugfix
- * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
- * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
- * Fix bug in entropy.c when THREADING_C is also enabled that caused
- entropy_free() to crash (thanks to Rafał Przywara).
- * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
- once on the same context.
- * Fix bug in ssl_mail_client when password is longer that username (found
- by Bruno Pape).
- * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
- (detected by Clang's 3.6 UBSan).
- * mpi_size() and mpi_msb() would segfault when called on an mpi that is
- initialized but not set (found by pravic).
- * Fix detection of support for getrandom() on Linux (reported by syzzer) by
- doing it at runtime (using uname) rather that compile time.
- * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
- * Fix potential NULL pointer dereference (not trigerrable remotely) when
- ssl_write() is called before the handshake is finished (introduced in
- 1.3.10) (first reported by Martin Blumenstingl).
- * Fix bug in pk_parse_key() that caused some valid private EC keys to be
- rejected.
- * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
- * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
- * Fix hardclock() (only used in the benchmarking program) with some
- versions of mingw64 (found by kxjhlele).
- * Fix warnings from mingw64 in timing.c (found by kxjklele).
- * Fix potential unintended sign extension in asn1_get_len() on 64-bit
- platforms.
- * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
- * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
- POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
- in 1.3.10).
- * Add missing extern "C" guard in aesni.h (reported by amir zamani).
- * Add missing dependency on SHA-256 in some x509 programs (reported by
- Gergely Budai).
- * Fix bug related to ssl_set_curves(): the client didn't check that the
- curve picked by the server was actually allowed.
-
-Changes
- * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
- * Remove potential sources of timing variations (some contributed by Pascal
- Junod).
- * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
- * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
- * compat-1.2.h and openssl.h are deprecated.
- * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
- more flexible (warning: OFLAGS is not used any more) (see the README)
- (contributed by Alon Bar-Lev).
- * ssl_set_own_cert() no longer calls pk_check_pair() since the
- performance impact was bad for some users (this was introduced in 1.3.10).
- * Move from SHA-1 to SHA-256 in example programs using signatures
- (suggested by Thorsten Mühlfelder).
- * Remove some unneeded inclusions of header files from the standard library
- "minimize" others (eg use stddef.h if only size_t is needed).
- * Change #include lines in test files to use double quotes instead of angle
- brackets for uniformity with the rest of the code.
- * Remove dependency on sscanf() in X.509 parsing modules.
-
-= mbed TLS 1.3.10 released 2015-02-09
-Security
- * NULL pointer dereference in the buffer-based allocator when the buffer is
- full and polarssl_free() is called (found by Mark Hasemeyer)
- (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
- not by default).
- * Fix remotely-triggerable uninitialised pointer dereference caused by
- crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
- client certificate) (found using Codenomicon Defensics).
- * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
- (TLS server is not affected if it doesn't ask for a client certificate)
- (found using Codenomicon Defensics).
- * Fix potential stack overflow while parsing crafted X.509 certificates
- (TLS server is not affected if it doesn't ask for a client certificate)
- (found using Codenomicon Defensics).
- * Fix timing difference that could theoretically lead to a
- Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
- (reported by Sebastian Schinzel).
-
-Features
- * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
- * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
- * Add support for Encrypt-then-MAC (RFC 7366).
- * Add function pk_check_pair() to test if public and private keys match.
- * Add x509_crl_parse_der().
- * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
- length of an X.509 verification chain.
- * Support for renegotiation can now be disabled at compile-time
- * Support for 1/n-1 record splitting, a countermeasure against BEAST.
- * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
- for pre-1.2 clients when multiple certificates are available.
- * Add support for getrandom() syscall on recent Linux kernels with Glibc or
- a compatible enough libc (eg uClibc).
- * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
- while using the default ciphersuite list.
- * Added new error codes and debug messages about selection of
- ciphersuite/certificate.
-
-Bugfix
- * Stack buffer overflow if ctr_drbg_update() is called with too large
- add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
- * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
- if memory_buffer_alloc_init() was called with buf not aligned and len not
- a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
- * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
- by Julian Ospald).
- * Fix potential undefined behaviour in Camellia.
- * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
- multiple of 8 (found by Gergely Budai).
- * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
- Peter Vaskovic).
- * Fix assembly selection for MIPS64 (thanks to James Cowgill).
- * ssl_get_verify_result() now works even if the handshake was aborted due
- to a failed verification (found by Fredrik Axelsson).
- * Skip writing and parsing signature_algorithm extension if none of the
- key exchanges enabled needs certificates. This fixes a possible interop
- issue with some servers when a zero-length extension was sent. (Reported
- by Peter Dettman.)
- * On a 0-length input, base64_encode() did not correctly set output length
- (found by Hendrik van den Boogaard).
-
-Changes
- * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
- switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
- * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
- * ssl_set_own_cert() now returns an error on key-certificate mismatch.
- * Forbid repeated extensions in X.509 certificates.
- * debug_print_buf() now prints a text view in addition to hexadecimal.
- * A specific error is now returned when there are ciphersuites in common
- but none of them is usable due to external factors such as no certificate
- with a suitable (extended)KeyUsage or curve or no PSK set.
- * It is now possible to disable negotiation of truncated HMAC server-side
- at runtime with ssl_set_truncated_hmac().
- * Example programs for SSL client and server now disable SSLv3 by default.
- * Example programs for SSL client and server now disable RC4 by default.
- * Use platform.h in all test suites and programs.
-
-= PolarSSL 1.3.9 released 2014-10-20
-Security
- * Lowest common hash was selected from signature_algorithms extension in
- TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
- * Remotely-triggerable memory leak when parsing some X.509 certificates
- (server is not affected if it doesn't ask for a client certificate)
- (found using Codenomicon Defensics).
- * Remotely-triggerable memory leak when parsing crafted ClientHello
- (not affected if ECC support was compiled out) (found using Codenomicon
- Defensics).
-
-Bugfix
- * Support escaping of commas in x509_string_to_names()
- * Fix compile error in ssl_pthread_server (found by Julian Ospald).
- * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
- * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
- * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
- * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
- are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
- * Remove non-existent file from VS projects (found by Peter Vaskovic).
- * ssl_read() could return non-application data records on server while
- renegotation was pending, and on client when a HelloRequest was received.
- * Server-initiated renegotiation would fail with non-blocking I/O if the
- write callback returned WANT_WRITE when requesting renegotiation.
- * ssl_close_notify() could send more than one message in some circumstances
- with non-blocking I/O.
- * Fix compiler warnings on iOS (found by Sander Niemeijer).
- * x509_crt_parse() did not increase total_failed on PEM error
- * Fix compile error with armcc in mpi_is_prime()
- * Fix potential bad read in parsing ServerHello (found by Adrien
- Vialletelle).
-
-Changes
- * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
- standard defining how to use SHA-2 with SSL 3.0).
- * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
- ambiguous on how to encode some packets with SSL 3.0).
- * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
- RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
- * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
- POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
- * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
- RSA keys.
- * Accept spaces at end of line or end of buffer in base64_decode().
- * X.509 certificates with more than one AttributeTypeAndValue per
- RelativeDistinguishedName are not accepted any more.
-
-= PolarSSL 1.3.8 released 2014-07-11
-Security
- * Fix length checking for AEAD ciphersuites (found by Codenomicon).
- It was possible to crash the server (and client) using crafted messages
- when a GCM suite was chosen.
-
-Features
- * Add CCM module and cipher mode to Cipher Layer
- * Support for CCM and CCM_8 ciphersuites
- * Support for parsing and verifying RSASSA-PSS signatures in the X.509
- modules (certificates, CRLs and CSRs).
- * Blowfish in the cipher layer now supports variable length keys.
- * Add example config.h for PSK with CCM, optimized for low RAM usage.
- * Optimize for RAM usage in example config.h for NSA Suite B profile.
- * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
- from the default list (inactive by default).
- * Add server-side enforcement of sent renegotiation requests
- (ssl_set_renegotiation_enforced())
- * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
- ciphersuites to use and save some memory if the list is small.
-
-Changes
- * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
- required on some platforms (e.g. OpenBSD)
- * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
- against unwanted compiler optimizations
- * md_list() now returns hashes strongest first
- * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
- strongest offered by client.
- * All public contexts have _init() and _free() functions now for simpler
- usage pattern
-
-Bugfix
- * Fix in debug_print_msg()
- * Enforce alignment in the buffer allocator even if buffer is not aligned
- * Remove less-than-zero checks on unsigned numbers
- * Stricter check on SSL ClientHello internal sizes compared to actual packet
- size (found by TrustInSoft)
- * Fix WSAStartup() return value check (found by Peter Vaskovic)
- * Other minor issues (found by Peter Vaskovic)
- * Fix symlink command for cross compiling with CMake (found by Andre
- Heinecke)
- * Fix DER output of gen_key app (found by Gergely Budai)
- * Very small records were incorrectly rejected when truncated HMAC was in
- use with some ciphersuites and versions (RC4 in all versions, CBC with
- versions < TLS 1.1).
- * Very large records using more than 224 bytes of padding were incorrectly
- rejected with CBC-based ciphersuites and TLS >= 1.1
- * Very large records using less padding could cause a buffer overread of up
- to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
- * Restore ability to use a v1 cert as a CA if trusted locally. (This had
- been removed in 1.3.6.)
- * Restore ability to locally trust a self-signed cert that is not a proper
- CA for use as an end entity certificate. (This had been removed in
- 1.3.6.)
- * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
- * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
- interpret semicolons as comment delimiters (found by Barry K. Nathan).
- * Fix off-by-one error in parsing Supported Point Format extension that
- caused some handshakes to fail.
- * Fix possible miscomputation of the premaster secret with DHE-PSK key
- exchange that caused some handshakes to fail with other implementations.
- (Failure rate <= 1/255 with common DHM moduli.)
- * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
- * Fix base64_decode() to return and check length correctly (in case of
- tight buffers)
- * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
- by Hui Dong)
-
-= PolarSSL 1.3.7 released on 2014-05-02
-Features
- * debug_set_log_mode() added to determine raw or full logging
- * debug_set_threshold() added to ignore messages over threshold level
- * version_check_feature() added to check for compile-time options at
- run-time
-
-Changes
- * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
- checked and filled in the relevant module headers
- * Debug module only outputs full lines instead of parts
- * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
- * AES-NI now compiles with "old" assemblers too
- * Ciphersuites based on RC4 now have the lowest priority by default
-
-Bugfix
- * Only iterate over actual certificates in ssl_write_certificate_request()
- (found by Matthew Page)
- * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
- Karger)
- * cert_write app should use subject of issuer certificate as issuer of cert
- * Fix false reject in padding check in ssl_decrypt_buf() for CBC
- ciphersuites, for full SSL frames of data.
- * Improve interoperability by not writing extension length in ClientHello /
- ServerHello when no extensions are present (found by Matthew Page)
- * rsa_check_pubkey() now allows an E up to N
- * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
- * mpi_fill_random() was creating numbers larger than requested on
- big-endian platform when size was not an integer number of limbs
- * Fix dependencies issues in X.509 test suite.
- * Some parts of ssl_tls.c were compiled even when the module was disabled.
- * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
- * Fix detection of Clang on some Apple platforms with CMake
- (found by Barry K. Nathan)
-
-= PolarSSL 1.3.6 released on 2014-04-11
-
-Features
- * Support for the ALPN SSL extension
- * Add option 'use_dev_random' to gen_key application
- * Enable verification of the keyUsage extension for CA and leaf
- certificates (POLARSSL_X509_CHECK_KEY_USAGE)
- * Enable verification of the extendedKeyUsage extension
- (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
-
-Changes
- * x509_crt_info() now prints information about parsed extensions as well
- * pk_verify() now returns a specific error code when the signature is valid
- but shorter than the supplied length.
- * Use UTC time to check certificate validity.
- * Reject certificates with times not in UTC, per RFC 5280.
-
-Security
- * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
- (Found by Watson Ladd.)
- * The notAfter date of some certificates was no longer checked since 1.3.5.
- This affects certificates in the user-supplied chain except the top
- certificate. If the user-supplied chain contains only one certificates,
- it is not affected (ie, its notAfter date is properly checked).
- * Prevent potential NULL pointer dereference in ssl_read_record() (found by
- TrustInSoft)
-
-Bugfix
- * The length of various ClientKeyExchange messages was not properly checked.
- * Some example server programs were not sending the close_notify alert.
- * Potential memory leak in mpi_exp_mod() when error occurs during
- calculation of RR.
- * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
- * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
- Gergely Budai).
- * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
- (found by Gergely Budai)
- * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
- Shuo Chen).
- * oid_get_numeric_string() used to truncate the output without returning an
- error if the output buffer was just 1 byte too small.
- * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
- * Calling pk_debug() on an RSA-alt key would segfault.
- * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
- * Potential buffer overwrite in pem_write_buffer() because of low length
- indication (found by Thijs Alkemade)
- * EC curves constants, which should be only in ROM since 1.3.3, were also
- stored in RAM due to missing 'const's (found by Gergely Budai).
-
-= PolarSSL 1.3.5 released on 2014-03-26
-Features
- * HMAC-DRBG as a separate module
- * Option to set the Curve preference order (disabled by default)
- * Single Platform compatilibity layer (for memory / printf / fprintf)
- * Ability to provide alternate timing implementation
- * Ability to force the entropy module to use SHA-256 as its basis
- (POLARSSL_ENTROPY_FORCE_SHA256)
- * Testing script ssl-opt.sh added for testing 'live' ssl option
- interoperability against OpenSSL and PolarSSL
- * Support for reading EC keys that use SpecifiedECDomain in some cases.
- * Entropy module now supports seed writing and reading
-
-Changes
- * Deprecated the Memory layer
- * entropy_add_source(), entropy_update_manual() and entropy_gather()
- now thread-safe if POLARSSL_THREADING_C defined
- * Improvements to the CMake build system, contributed by Julian Ospald.
- * Work around a bug of the version of Clang shipped by Apple with Mavericks
- that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
- * Revamped the compat.sh interoperatibility script to include support for
- testing against GnuTLS
- * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
- * Improvements to tests/Makefile, contributed by Oden Eriksson.
-
-Security
- * Forbid change of server certificate during renegotiation to prevent
- "triple handshake" attack when authentication mode is 'optional' (the
- attack was already impossible when authentication is required).
- * Check notBefore timestamp of certificates and CRLs from the future.
- * Forbid sequence number wrapping
- * Fixed possible buffer overflow with overlong PSK
- * Possible remotely-triggered out-of-bounds memory access fixed (found by
- TrustInSoft)
-
-Bugfix
- * ecp_gen_keypair() does more tries to prevent failure because of
- statistics
- * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
- * Fixed testing with out-of-source builds using cmake
- * Fixed version-major intolerance in server
- * Fixed CMake symlinking on out-of-source builds
- * Fixed dependency issues in test suite
- * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
- * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
- Alex Wilson.)
- * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
- * m_sleep() was sleeping twice too long on most Unix platforms.
- * Fixed bug with session tickets and non-blocking I/O in the unlikely case
- send() would return an EAGAIN error when sending the ticket.
- * ssl_cache was leaking memory when reusing a timed out entry containing a
- client certificate.
- * ssl_srv was leaking memory when client presented a timed out ticket
- containing a client certificate
- * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
- out_ctr failed
- * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
- of one of them failed
- * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
- * x509_get_current_time() uses localtime_r() to prevent thread issues
-
-= PolarSSL 1.3.4 released on 2014-01-27
-Features
- * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
- * Support for RIPEMD-160
- * Support for AES CFB8 mode
- * Support for deterministic ECDSA (RFC 6979)
-
-Bugfix
- * Potential memory leak in bignum_selftest()
- * Replaced expired test certificate
- * ssl_mail_client now terminates lines with CRLF, instead of LF
- * net module handles timeouts on blocking sockets better (found by Tilman
- Sauerbeck)
- * Assembly format fixes in bn_mul.h
-
-Security
- * Missing MPI_CHK calls added around unguarded mpi calls (found by
- TrustInSoft)
-
-= PolarSSL 1.3.3 released on 2013-12-31
-Features
- * EC key generation support in gen_key app
- * Support for adhering to client ciphersuite order preference
- (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
- * Support for Curve25519
- * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
- * Support for IPv6 in the NET module
- * AES-NI support for AES, AES-GCM and AES key scheduling
- * SSL Pthread-based server example added (ssl_pthread_server)
-
-Changes
- * gen_prime() speedup
- * Speedup of ECP multiplication operation
- * Relaxed some SHA2 ciphersuite's version requirements
- * Dropped use of readdir_r() instead of readdir() with threading support
- * More constant-time checks in the RSA module
- * Split off curves from ecp.c into ecp_curves.c
- * Curves are now stored fully in ROM
- * Memory usage optimizations in ECP module
- * Removed POLARSSL_THREADING_DUMMY
-
-Bugfix
- * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
- * Fixed X.509 hostname comparison (with non-regular characters)
- * SSL now gracefully handles missing RNG
- * Missing defines / cases for RSA_PSK key exchange
- * crypt_and_hash app checks MAC before final decryption
- * Potential memory leak in ssl_ticket_keys_init()
- * Memory leak in benchmark application
- * Fixed x509_crt_parse_path() bug on Windows platforms
- * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
- TrustInSoft)
- * Fixed potential overflow in certificate size verification in
- ssl_write_certificate() (found by TrustInSoft)
-
-Security
- * Possible remotely-triggered out-of-bounds memory access fixed (found by
- TrustInSoft)
-
-= PolarSSL 1.3.2 released on 2013-11-04
-Features
- * PK tests added to test framework
- * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
- * Support for Camellia-GCM mode and ciphersuites
-
-Changes
- * Padding checks in cipher layer are now constant-time
- * Value comparisons in SSL layer are now constant-time
- * Support for serialNumber, postalAddress and postalCode in X509 names
- * SSL Renegotiation was refactored
-
-Bugfix
- * More stringent checks in cipher layer
- * Server does not send out extensions not advertised by client
- * Prevent possible alignment warnings on casting from char * to 'aligned *'
- * Misc fixes and additions to dependency checks
- * Const correctness
- * cert_write with selfsign should use issuer_name as subject_name
- * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
- * Defines to handle UEFI environment under MSVC
- * Server-side initiated renegotiations send HelloRequest
-
-= PolarSSL 1.3.1 released on 2013-10-15
-Features
- * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
- * Support for ECDHE-PSK key-exchange and ciphersuites
- * Support for RSA-PSK key-exchange and ciphersuites
-
-Changes
- * RSA blinding locks for a smaller amount of time
- * TLS compression only allocates working buffer once
- * Introduced POLARSSL_HAVE_READDIR_R for systems without it
- * config.h is more script-friendly
-
-Bugfix
- * Missing MSVC defines added
- * Compile errors with POLARSSL_RSA_NO_CRT
- * Header files with 'polarssl/'
- * Const correctness
- * Possible naming collision in dhm_context
- * Better support for MSVC
- * threading_set_alt() name
- * Added missing x509write_crt_set_version()
-
-= PolarSSL 1.3.0 released on 2013-10-01
-Features
- * Elliptic Curve Cryptography module added
- * Elliptic Curve Diffie Hellman module added
- * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
- (ECDHE-based ciphersuites)
- * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
- (ECDSA-based ciphersuites)
- * Ability to specify allowed ciphersuites based on the protocol version.
- * PSK and DHE-PSK based ciphersuites added
- * Memory allocation abstraction layer added
- * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
- * Threading abstraction layer added (dummy / pthread / alternate)
- * Public Key abstraction layer added
- * Parsing Elliptic Curve keys
- * Parsing Elliptic Curve certificates
- * Support for max_fragment_length extension (RFC 6066)
- * Support for truncated_hmac extension (RFC 6066)
- * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
- (ISO/IEC 7816-4) padding and zero padding in the cipher layer
- * Support for session tickets (RFC 5077)
- * Certificate Request (CSR) generation with extensions (key_usage,
- ns_cert_type)
- * X509 Certificate writing with extensions (basic_constraints,
- 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!)
-
-Changes
- * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
- individually
- * Introduced separate SSL Ciphersuites module that is based on
- Cipher and MD information
- * Internals for SSL module adapted to have separate IV pointer that is
- dynamically set (Better support for hardware acceleration)
- * Moved all OID functionality to a separate module. RSA function
- prototypes for the RSA sign and verify functions changed as a result
- * Split up the GCM module into a starts/update/finish cycle
- * Client and server now filter sent and accepted ciphersuites on minimum
- and maximum protocol version
- * Ability to disable server_name extension (RFC 6066)
- * Renamed error_strerror() to the less conflicting polarssl_strerror()
- (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
- * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
- * All RSA operations require a random generator for blinding purposes
- * X509 core refactored
- * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
- * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
- * Support faulty X509 v1 certificates with extensions
- (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
-
-Bugfix
- * Fixed parse error in ssl_parse_certificate_request()
- * zlib compression/decompression skipped on empty blocks
- * Support for AIX header locations in net.c module
- * Fixed file descriptor leaks
-
-Security
- * RSA blinding on CRT operations to counter timing attacks
- (found by Cyril Arnaud and Pierre-Alain Fouque)
-
-
-= Version 1.2.14 released 2015-05-??
-
-Security
- * Fix potential invalid memory read in the server, that allows a client to
- crash it remotely (found by Caj Larsson).
- * Fix potential invalid memory read in certificate parsing, that allows a
- client to crash the server remotely if client authentication is enabled
- (found using Codenomicon Defensics).
- * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
- https://dl.acm.org/citation.cfm?id=2714625
-
-Bugfix
- * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
- * Fix hardclock() (only used in the benchmarking program) with some
- versions of mingw64 (found by kxjhlele).
- * Fix warnings from mingw64 in timing.c (found by kxjklele).
- * Fix potential unintended sign extension in asn1_get_len() on 64-bit
- platforms (found with Coverity Scan).
-
-= Version 1.2.13 released 2015-02-16
-Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
- this will be made in the 1.2 branch at this point.
-
-Security
- * Fix remotely-triggerable uninitialised pointer dereference caused by
- crafted X.509 certificate (TLS server is not affected if it doesn't ask
- for a client certificate) (found using Codenomicon Defensics).
- * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
- (TLS server is not affected if it doesn't ask for a client certificate)
- (found using Codenomicon Defensics).
- * Fix potential stack overflow while parsing crafted X.509 certificates
- (TLS server is not affected if it doesn't ask for a client certificate)
- found using Codenomicon Defensics).
- * Fix buffer overread of size 1 when parsing crafted X.509 certificates
- (TLS server is not affected if it doesn't ask for a client certificate).
-
-Bugfix
- * Fix potential undefined behaviour in Camellia.
- * Fix memory leaks in PKCS#5 and PKCS#12.
- * Stack buffer overflow if ctr_drbg_update() is called with too large
- add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
- * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
- in 1.2.12).
- * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
- Peter Vaskovic).
- * Fix assembly selection for MIPS64 (thanks to James Cowgill).
- * ssl_get_verify_result() now works even if the handshake was aborted due
- to a failed verification (found by Fredrik Axelsson).
- * Skip writing and parsing signature_algorithm extension if none of the
- key exchanges enabled needs certificates. This fixes a possible interop
- issue with some servers when a zero-length extension was sent. (Reported
- by Peter Dettman.)
- * On a 0-length input, base64_encode() did not correctly set output length
- (found by Hendrik van den Boogaard).
-
-Changes
- * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
- * Forbid repeated extensions in X.509 certificates.
- * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
- length of an X.509 verification chain (default = 8).
-= Version 1.2.12 released 2014-10-24
-
-Security
- * Remotely-triggerable memory leak when parsing some X.509 certificates
- (server is not affected if it doesn't ask for a client certificate).
- (Found using Codenomicon Defensics.)
-
-Bugfix
- * Fix potential bad read in parsing ServerHello (found by Adrien
- Vialletelle).
- * ssl_close_notify() could send more than one message in some circumstances
- with non-blocking I/O.
- * x509_crt_parse() did not increase total_failed on PEM error
- * Fix compiler warnings on iOS (found by Sander Niemeijer).
- * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
- * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
- * ssl_read() could return non-application data records on server while
- renegotation was pending, and on client when a HelloRequest was received.
- * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
-
-Changes
- * X.509 certificates with more than one AttributeTypeAndValue per
- RelativeDistinguishedName are not accepted any more.
- * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
- POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
- * Accept spaces at end of line or end of buffer in base64_decode().
-
-= Version 1.2.11 released 2014-07-11
-Features
- * Entropy module now supports seed writing and reading
-
-Changes
- * Introduced POLARSSL_HAVE_READDIR_R for systems without it
- * Improvements to the CMake build system, contributed by Julian Ospald.
- * Work around a bug of the version of Clang shipped by Apple with Mavericks
- that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
- * Improvements to tests/Makefile, contributed by Oden Eriksson.
- * Use UTC time to check certificate validity.
- * Reject certificates with times not in UTC, per RFC 5280.
- * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
- against unwanted compiler optimizations
-
-Security
- * Forbid change of server certificate during renegotiation to prevent
- "triple handshake" attack when authentication mode is optional (the
- attack was already impossible when authentication is required).
- * Check notBefore timestamp of certificates and CRLs from the future.
- * Forbid sequence number wrapping
- * Prevent potential NULL pointer dereference in ssl_read_record() (found by
- TrustInSoft)
- * Fix length checking for AEAD ciphersuites (found by Codenomicon).
- It was possible to crash the server (and client) using crafted messages
- when a GCM suite was chosen.
-
-Bugfix
- * Fixed X.509 hostname comparison (with non-regular characters)
- * SSL now gracefully handles missing RNG
- * crypt_and_hash app checks MAC before final decryption
- * Fixed x509_crt_parse_path() bug on Windows platforms
- * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
- TrustInSoft)
- * Fixed potential overflow in certificate size verification in
- ssl_write_certificate() (found by TrustInSoft)
- * Fix ASM format in bn_mul.h
- * Potential memory leak in bignum_selftest()
- * Replaced expired test certificate
- * ssl_mail_client now terminates lines with CRLF, instead of LF
- * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
- * Fixed testing with out-of-source builds using cmake
- * Fixed version-major intolerance in server
- * Fixed CMake symlinking on out-of-source builds
- * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
- Alex Wilson.)
- * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
- out_ctr failed
- * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
- of one of them failed
- * x509_get_current_time() uses localtime_r() to prevent thread issues
- * Some example server programs were not sending the close_notify alert.
- * Potential memory leak in mpi_exp_mod() when error occurs during
- calculation of RR.
- * Improve interoperability by not writing extension length in ClientHello
- when no extensions are present (found by Matthew Page)
- * rsa_check_pubkey() now allows an E up to N
- * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
- * mpi_fill_random() was creating numbers larger than requested on
- big-endian platform when size was not an integer number of limbs
- * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
- * Stricter check on SSL ClientHello internal sizes compared to actual packet
- size (found by TrustInSoft)
- * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
- * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
- interpret semicolons as comment delimiters (found by Barry K. Nathan).
- * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
- * Fix base64_decode() to return and check length correctly (in case of
- tight buffers)
-
-= Version 1.2.10 released 2013-10-07
-Changes
- * Changed RSA blinding to a slower but thread-safe version
-
-Bugfix
- * Fixed memory leak in RSA as a result of introduction of blinding
- * Fixed ssl_pkcs11_decrypt() prototype
- * Fixed MSVC project files
-
-= Version 1.2.9 released 2013-10-01
-Changes
- * x509_verify() now case insensitive for cn (RFC 6125 6.4)
-
-Bugfix
- * Fixed potential memory leak when failing to resume a session
- * Fixed potential file descriptor leaks (found by Remi Gacogne)
- * Minor fixes
-
-Security
- * Fixed potential heap buffer overflow on large hostname setting
- * Fixed potential negative value misinterpretation in load_file()
- * RSA blinding on CRT operations to counter timing attacks
- (found by Cyril Arnaud and Pierre-Alain Fouque)
-
-= Version 1.2.8 released 2013-06-19
-Features
- * Parsing of PKCS#8 encrypted private key files
- * PKCS#12 PBE and derivation functions
- * Centralized module option values in config.h to allow user-defined
- settings without editing header files by using POLARSSL_CONFIG_OPTIONS
-
-Changes
- * HAVEGE random generator disabled by default
- * Internally split up x509parse_key() into a (PEM) handler function
- and specific DER parser functions for the PKCS#1 and unencrypted
- 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)
- * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
- old PBKDF2 module
-
-Bugfix
- * Secure renegotiation extension should only be sent in case client
- supports secure renegotiation
- * Fixed offset for cert_type list in ssl_parse_certificate_request()
- * Fixed const correctness issues that have no impact on the ABI
- * 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
- * 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
- * ssl_write_certificate_request() can handle empty ca_chain
-
-Security
- * A possible DoS during the SSL Handshake, due to faulty parsing of
- PEM-encoded certificates has been fixed (found by Jack Lloyd)
-
-= Version 1.2.7 released 2013-04-13
-Features
- * Ability to specify allowed ciphersuites based on the protocol version.
-
-Changes
- * Default Blowfish keysize is now 128-bits
- * Test suites made smaller to accommodate Raspberry Pi
-
-Bugfix
- * Fix for MPI assembly for ARM
- * GCM adapted to support sizes > 2^29
-
-= Version 1.2.6 released 2013-03-11
-Bugfix
- * Fixed memory leak in ssl_free() and ssl_reset() for active session
- * Corrected GCM counter incrementation to use only 32-bits instead of
- 128-bits (found by Yawning Angel)
- * Fixes for 64-bit compilation with MS Visual Studio
- * Fixed net_bind() for specified IP addresses on little endian systems
- * Fixed assembly code for ARM (Thumb and regular) for some compilers
-
-Changes
- * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
- rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
- PKCS#1 v2.1 functions
- * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
- or rsa_rsaes_oaep_decrypt()
- * Re-added handling for SSLv2 Client Hello when the define
- POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
- * The SSL session cache module (ssl_cache) now also retains peer_cert
- information (not the entire chain)
-
-Security
- * Removed further timing differences during SSL message decryption in
- ssl_decrypt_buf()
- * Removed timing differences due to bad padding from
- rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
- operations
-
-= Version 1.2.5 released 2013-02-02
-Changes
- * Allow enabling of dummy error_strerror() to support some use-cases
- * Debug messages about padding errors during SSL message decryption are
- disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
- * Sending of security-relevant alert messages that do not break
- interoperability can be switched on/off with the flag
- POLARSSL_SSL_ALL_ALERT_MESSAGES
-
-Security
- * Removed timing differences during SSL message decryption in
- ssl_decrypt_buf() due to badly formatted padding
-
-= Version 1.2.4 released 2013-01-25
-Changes
- * More advanced SSL ciphersuite representation and moved to more dynamic
- SSL core
- * Added ssl_handshake_step() to allow single stepping the handshake process
-
-Bugfix
- * Memory leak when using RSA_PKCS_V21 operations fixed
- * Handle future version properly in ssl_write_certificate_request()
- * Correctly handle CertificateRequest message in client for <= TLS 1.1
- without DN list
-
-= Version 1.2.3 released 2012-11-26
-Bugfix
- * Server not always sending correct CertificateRequest message
-
-= Version 1.2.2 released 2012-11-24
-Changes
- * Added p_hw_data to ssl_context for context specific hardware acceleration
- data
- * During verify trust-CA is only checked for expiration and CRL presence
-
-Bugfixes
- * Fixed client authentication compatibility
- * Fixed dependency on POLARSSL_SHA4_C in SSL modules
-
-= Version 1.2.1 released 2012-11-20
-Changes
- * Depth that the certificate verify callback receives is now numbered
- bottom-up (Peer cert depth is 0)
-
-Bugfixes
- * Fixes for MSVC6
- * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
- * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
- Pégourié-Gonnard)
- * Fixed possible segfault in mpi_shift_r() (found by Manuel
- Pégourié-Gonnard)
- * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
-
-= Version 1.2.0 released 2012-10-31
-Features
- * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
- ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
- default!
- * Added support for wildcard certificates
- * Added support for multi-domain certificates through the X509 Subject
- Alternative Name extension
- * Added preliminary ASN.1 buffer writing support
- * Added preliminary X509 Certificate Request writing support
- * Added key_app_writer example application
- * Added cert_req example application
- * Added base Galois Counter Mode (GCM) for AES
- * Added TLS 1.2 support (RFC 5246)
- * Added GCM suites to TLS 1.2 (RFC 5288)
- * Added commandline error code convertor (util/strerror)
- * Added support for Hardware Acceleration hooking in SSL/TLS
- * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
- example application (programs/ssl/o_p_test) (requires OpenSSL)
- * Added X509 CA Path support
- * Added Thumb assembly optimizations
- * Added DEFLATE compression support as per RFC3749 (requires zlib)
- * Added blowfish algorithm (Generic and cipher layer)
- * Added PKCS#5 PBKDF2 key derivation function
- * Added Secure Renegotiation (RFC 5746)
- * Added predefined DHM groups from RFC 5114
- * Added simple SSL session cache implementation
- * Added ServerName extension parsing (SNI) at server side
- * Added option to add minimum accepted SSL/TLS protocol version
-
-Changes
- * Removed redundant POLARSSL_DEBUG_MSG define
- * AES code only check for Padlock once
- * Fixed const-correctness mpi_get_bit()
- * Documentation for mpi_lsb() and mpi_msb()
- * Moved out_msg to out_hdr + 32 to support hardware acceleration
- * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
- to not match CN if subjectAltName extension is present (Closes ticket #56)
- * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
- POLARSSL_MODE_CFB, to also handle different block size CFB modes.
- * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
- * Revamped session resumption handling
- * Generalized external private key implementation handling (like PKCS#11)
- in SSL/TLS
- * Revamped x509_verify() and the SSL f_vrfy callback implementations
- * Moved from unsigned long to fixed width uint32_t types throughout code
- * Renamed ciphersuites naming scheme to IANA reserved names
-
-Bugfix
- * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
- Hui Dong)
- * Fixed potential heap corruption in x509_name allocation
- * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
- * 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
- * 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
- with carry rollover (found by Ruslan Yushchenko)
- * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
- * Fixed MPI assembly for SPARC64 platform
-
-Security
- * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
- Vanderbeken)
-
-= Version 1.1.8 released on 2013-10-01
-Bugfix
- * Fixed potential memory leak when failing to resume a session
- * Fixed potential file descriptor leaks
-
-Security
- * Potential buffer-overflow for ssl_read_record() (independently found by
- both TrustInSoft and Paul Brodeur of Leviathan Security Group)
- * Potential negative value misinterpretation in load_file()
- * Potential heap buffer overflow on large hostname setting
-
-= Version 1.1.7 released on 2013-06-19
-Changes
- * HAVEGE random generator disabled by default
-
-Bugfix
- * 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
- * Fixed values for 2-key Triple DES in cipher layer
- * ssl_write_certificate_request() can handle empty ca_chain
-
-Security
- * A possible DoS during the SSL Handshake, due to faulty parsing of
- PEM-encoded certificates has been fixed (found by Jack Lloyd)
-
-= Version 1.1.6 released on 2013-03-11
-Bugfix
- * Fixed net_bind() for specified IP addresses on little endian systems
-
-Changes
- * Allow enabling of dummy error_strerror() to support some use-cases
- * Debug messages about padding errors during SSL message decryption are
- disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
-
-Security
- * Removed timing differences during SSL message decryption in
- ssl_decrypt_buf()
- * Removed timing differences due to bad padding from
- rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
- operations
-
-= Version 1.1.5 released on 2013-01-16
-Bugfix
- * Fixed MPI assembly for SPARC64 platform
- * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
- * mpi_add_abs() now correctly handles adding short numbers to long numbers
- with carry rollover
- * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
- * Prevent reading over buffer boundaries on X509 certificate parsing
- * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
- #52)
- * Fixed possible segfault in mpi_shift_r() (found by Manuel
- Pégourié-Gonnard)
- * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
- Pégourié-Gonnard)
- * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
- * Memory leak when using RSA_PKCS_V21 operations fixed
- * Handle encryption with private key and decryption with public key as per
- RFC 2313
- * Fixes for MSVC6
-
-Security
- * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
- Vanderbeken)
-
-= Version 1.1.4 released on 2012-05-31
-Bugfix
- * Correctly handle empty SSL/TLS packets (Found by James Yonan)
- * Fixed potential heap corruption in x509_name allocation
- * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
-
-= Version 1.1.3 released on 2012-04-29
-Bugfix
- * Fixed random MPI generation to not generate more size than requested.
-
-= Version 1.1.2 released on 2012-04-26
-Bugfix
- * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
- Hui Dong)
-
-Security
- * Fixed potential memory corruption on miscrafted client messages (found by
- Frama-C team at CEA LIST)
- * Fixed generation of DHM parameters to correct length (found by Ruslan
- Yushchenko)
-
-= Version 1.1.1 released on 2012-01-23
-Bugfix
- * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
- (Closes ticket #47, found by Hugo Leisink)
- * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
- * Fixed multiple compiler warnings for VS6 and armcc
- * Fixed bug in CTR_CRBG selftest
-
-= Version 1.1.0 released on 2011-12-22
-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.
- * 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)
- * 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
-
-Changes
- * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
- * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
- encryption and private key for decryption. (Closes ticket #34)
- * Inceased maximum size of ASN1 length reads to 32-bits.
- * Added an EXPLICIT tag number parameter to x509_get_ext()
- * Added a separate CRL entry extension parsing function
- * Separated the ASN.1 parsing code from the X.509 specific parsing code.
- So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
- * Changed the defined key-length of DES ciphers in cipher.h to include the
- parity bits, to prevent mistakes in copying data. (Closes ticket #33)
- * Loads of minimal changes to better support WINCE as a build target
- (Credits go to Marco Lizza)
- * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
- trade-off
- * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
- management (Closes ticket #44)
- * Changed the used random function pointer to more flexible format. Renamed
- havege_rand() to havege_random() to prevent mistakes. Lots of changes as
- a consequence in library code and programs
- * Moved all examples programs to use the new entropy and CTR_DRBG
- * Added permissive certificate parsing to x509parse_crt() and
- x509parse_crtfile(). With permissive parsing the parsing does not stop on
- encountering a parse-error. Beware that the meaning of return values has
- changed!
- * All error codes are now negative. Even on mermory failures and IO errors.
-
-Bugfix
- * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
- ticket #37)
- * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
- before version numbers
- * Allowed X509 key usage parsing to accept 4 byte values instead of the
- standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
- * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
- smaller than the hash length. (Closes ticket #41)
- * If certificate serial is longer than 32 octets, serial number is now
- appended with '....' after first 28 octets
- * Improved build support for s390x and sparc64 in bignum.h
- * Fixed MS Visual C++ name clash with int64 in sha4.h
- * Corrected removal of leading "00:" in printing serial numbers in
- certificates and CRLs
-
-= Version 1.0.0 released on 2011-07-27
-Features
- * Expanded cipher layer with support for CFB128 and CTR mode
- * Added rsa_encrypt and rsa_decrypt simple example programs.
-
-Changes
- * The generic cipher and message digest layer now have normal error
- codes instead of integers
-
-Bugfix
- * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
- #18)
-
-= Version 0.99-pre5 released on 2011-05-26
-Features
- * Added additional Cipher Block Modes to symmetric ciphers
- (AES CTR, Camellia CTR, XTEA CBC) including the option to
- enable and disable individual modes when needed
- * Functions requiring File System functions can now be disabled
- by undefining POLARSSL_FS_IO
- * A error_strerror function() has been added to translate between
- error codes and their description.
- * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
- functions.
- * Added ssl_mail_client and ssl_fork_server as example programs.
-
-Changes
- * Major argument / variable rewrite. Introduced use of size_t
- instead of int for buffer lengths and loop variables for
- better unsigned / signed use. Renamed internal bigint types
- t_int and t_dbl to t_uint and t_udbl in the process
- * mpi_init() and mpi_free() now only accept a single MPI
- argument and do not accept variable argument lists anymore.
- * The error codes have been remapped and combining error codes
- is now done with a PLUS instead of an OR as error codes
- used are negative.
- * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
- net_recv() now returns 0 on EOF instead of
- POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
- POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
- ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
- after the handshake.
- * Network functions now return POLARSSL_ERR_NET_WANT_READ or
- POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
- POLARSSL_ERR_NET_TRY_AGAIN
-
-= Version 0.99-pre4 released on 2011-04-01
-Features
- * Added support for PKCS#1 v2.1 encoding and thus support
- for the RSAES-OAEP and RSASSA-PSS operations.
- * Reading of Public Key files incorporated into default x509
- functionality as well.
- * Added mpi_fill_random() for centralized filling of big numbers
- with random data (Fixed ticket #10)
-
-Changes
- * Debug print of MPI now removes leading zero octets and
- displays actual bit size of the value.
- * x509parse_key() (and as a consequence x509parse_keyfile())
- does not zeroize memory in advance anymore. Use rsa_init()
- before parsing a key or keyfile!
-
-Bugfix
- * Debug output of MPI's now the same independent of underlying
- platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
- Kiilerich and Mihai Militaru)
- * Fixed bug in ssl_write() when flushing old data (Fixed ticket
- #18, found by Nikolay Epifanov)
- * Fixed proper handling of RSASSA-PSS verification with variable
- length salt lengths
-
-= Version 0.99-pre3 released on 2011-02-28
-This release replaces version 0.99-pre2 which had possible copyright issues.
-Features
- * Parsing PEM private keys encrypted with DES and AES
- are now supported as well (Fixes ticket #5)
- * Added crl_app program to allow easy reading and
- printing of X509 CRLs from file
-
-Changes
- * Parsing of PEM files moved to separate module (Fixes
- ticket #13). Also possible to remove PEM support for
- systems only using DER encoding
-
-Bugfixes
- * Corrected parsing of UTCTime dates before 1990 and
- after 1950
- * Support more exotic OID's when parsing certificates
- (found by Mads Kiilerich)
- * Support more exotic name representations when parsing
- certificates (found by Mads Kiilerich)
- * Replaced the expired test certificates
- * Do not bail out if no client certificate specified. Try
- to negotiate anonymous connection (Fixes ticket #12,
- found by Boris Krasnovskiy)
-
-Security fixes
- * Fixed a possible Man-in-the-Middle attack on the
- Diffie Hellman key exchange (thanks to Larry Highsmith,
- Subreption LLC)
-
-= Version 0.99-pre1 released on 2011-01-30
-Features
-Note: Most of these features have been donated by Fox-IT
- * Added Doxygen source code documentation parts
- * Added reading of DHM context from memory and file
- * Improved X509 certificate parsing to include extended
- certificate fields, including Key Usage
- * Improved certificate verification and verification
- against the available CRLs
- * Detection for DES weak keys and parity bits added
- * Improvements to support integration in other
- applications:
- + Added generic message digest and cipher wrapper
- + Improved information about current capabilities,
- status, objects and configuration
- + Added verification callback on certificate chain
- verification to allow external blacklisting
- + Additional example programs to show usage
- * Added support for PKCS#11 through the use of the
- libpkcs11-helper library
-
-Changes
- * x509parse_time_expired() checks time in addition to
- the existing date check
- * The ciphers member of ssl_context and the cipher member
- of ssl_session have been renamed to ciphersuites and
- ciphersuite respectively. This clarifies the difference
- with the generic cipher layer and is better naming
- altogether
-
-= Version 0.14.0 released on 2010-08-16
-Features
- * Added support for SSL_EDH_RSA_AES_128_SHA and
- SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
- * Added compile-time and run-time version information
- * Expanded ssl_client2 arguments for more flexibility
- * Added support for TLS v1.1
-
-Changes
- * Made Makefile cleaner
- * Removed dependency on rand() in rsa_pkcs1_encrypt().
- Now using random fuction provided to function and
- changed the prototype of rsa_pkcs1_encrypt(),
- rsa_init() and rsa_gen_key().
- * Some SSL defines were renamed in order to avoid
- future confusion
-
-Bug fixes
- * Fixed CMake out of source build for tests (found by
- kkert)
- * rsa_check_private() now supports PKCS1v2 keys as well
- * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
- generator
-
-= Version 0.13.1 released on 2010-03-24
-Bug fixes
- * Fixed Makefile in library that was mistakenly merged
- * Added missing const string fixes
-
-= Version 0.13.0 released on 2010-03-21
-Features
- * Added option parsing for host and port selection to
- ssl_client2
- * Added support for GeneralizedTime in X509 parsing
- * Added cert_app program to allow easy reading and
- printing of X509 certificates from file or SSL
- connection.
-
-Changes
- * Added const correctness for main code base
- * X509 signature algorithm determination is now
- in a function to allow easy future expansion
- * Changed symmetric cipher functions to
- identical interface (returning int result values)
- * Changed ARC4 to use separate input/output buffer
- * Added reset function for HMAC context as speed-up
- for specific use-cases
-
-Bug fixes
- * Fixed bug resulting in failure to send the last
- certificate in the chain in ssl_write_certificate() and
- ssl_write_certificate_request() (found by fatbob)
- * Added small fixes for compiler warnings on a Mac
- (found by Frank de Brabander)
- * Fixed algorithmic bug in mpi_is_prime() (found by
- Smbat Tonoyan)
-
-= Version 0.12.1 released on 2009-10-04
-Changes
- * Coverage test definitions now support 'depends_on'
- tagging system.
- * Tests requiring specific hashing algorithms now honor
- the defines.
-
-Bug fixes
- * Changed typo in #ifdef in x509parse.c (found
- by Eduardo)
-
-= Version 0.12.0 released on 2009-07-28
-Features
- * Added CMake makefiles as alternative to regular Makefiles.
- * Added preliminary Code Coverage tests for AES, ARC4,
- Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
- Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
- and X509parse.
-
-Changes
- * Error codes are not (necessarily) negative. Keep
- this is mind when checking for errors.
- * RSA_RAW renamed to SIG_RSA_RAW for consistency.
- * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
- * Changed interface for AES and Camellia setkey functions
- to indicate invalid key lengths.
-
-Bug fixes
- * Fixed include location of endian.h on FreeBSD (found by
- Gabriel)
- * Fixed include location of endian.h and name clash on
- Apples (found by Martin van Hensbergen)
- * Fixed HMAC-MD2 by modifying md2_starts(), so that the
- required HMAC ipad and opad variables are not cleared.
- (found by code coverage tests)
- * Prevented use of long long in bignum if
- POLARSSL_HAVE_LONGLONG not defined (found by Giles
- Bathgate).
- * Fixed incorrect handling of negative strings in
- mpi_read_string() (found by code coverage tests).
- * Fixed segfault on handling empty rsa_context in
- rsa_check_pubkey() and rsa_check_privkey() (found by
- code coverage tests).
- * Fixed incorrect handling of one single negative input
- value in mpi_add_abs() (found by code coverage tests).
- * Fixed incorrect handling of negative first input
- value in mpi_sub_abs() (found by code coverage tests).
- * Fixed incorrect handling of negative first input
- value in mpi_mod_mpi() and mpi_mod_int(). Resulting
- change also affects mpi_write_string() (found by code
- coverage tests).
- * Corrected is_prime() results for 0, 1 and 2 (found by
- code coverage tests).
- * Fixed Camellia and XTEA for 64-bit Windows systems.
-
-= Version 0.11.1 released on 2009-05-17
- * Fixed missing functionality for SHA-224, SHA-256, SHA384,
- SHA-512 in rsa_pkcs1_sign()
-
-= Version 0.11.0 released on 2009-05-03
- * Fixed a bug in mpi_gcd() so that it also works when both
- input numbers are even and added testcases to check
- (found by Pierre Habouzit).
- * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
- one way hash functions with the PKCS#1 v1.5 signing and
- verification.
- * Fixed minor bug regarding mpi_gcd located within the
- POLARSSL_GENPRIME block.
- * Fixed minor memory leak in x509parse_crt() and added better
- handling of 'full' certificate chains (found by Mathias
- Olsson).
- * Centralized file opening and reading for x509 files into
- load_file()
- * Made definition of net_htons() endian-clean for big endian
- systems (Found by Gernot).
- * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
- padlock and timing code.
- * Fixed an off-by-one buffer allocation in ssl_set_hostname()
- responsible for crashes and unwanted behaviour.
- * Added support for Certificate Revocation List (CRL) parsing.
- * Added support for CRL revocation to x509parse_verify() and
- SSL/TLS code.
- * Fixed compatibility of XTEA and Camellia on a 64-bit system
- (found by Felix von Leitner).
-
-= Version 0.10.0 released on 2009-01-12
- * Migrated XySSL to PolarSSL
- * Added XTEA symmetric cipher
- * Added Camellia symmetric cipher
- * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
- SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
- * Fixed dangerous bug that can cause a heap overflow in
- rsa_pkcs1_decrypt (found by Christophe Devine)
-
-================================================================
-XySSL ChangeLog
-
-= Version 0.9 released on 2008-03-16
-
- * Added support for ciphersuite: SSL_RSA_AES_128_SHA
- * Enabled support for large files by default in aescrypt2.c
- * Preliminary openssl wrapper contributed by David Barrett
- * Fixed a bug in ssl_write() that caused the same payload to
- be sent twice in non-blocking mode when send returns EAGAIN
- * Fixed ssl_parse_client_hello(): session id and challenge must
- not be swapped in the SSLv2 ClientHello (found by Greg Robson)
- * Added user-defined callback debug function (Krystian Kolodziej)
- * Before freeing a certificate, properly zero out all cert. data
- * Fixed the "mode" parameter so that encryption/decryption are
- not swapped on PadLock; also fixed compilation on older versions
- of gcc (bug reported by David Barrett)
- * Correctly handle the case in padlock_xcryptcbc() when input or
- output data is non-aligned by falling back to the software
- implementation, as VIA Nehemiah cannot handle non-aligned buffers
- * Fixed a memory leak in x509parse_crt() which was reported by Greg
- Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
- Matthew Page who reported several bugs
- * Fixed x509_get_ext() to accept some rare certificates which have
- an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
- * Added support on the client side for the TLS "hostname" extension
- (patch contributed by David Patino)
- * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
- string is passed as the CN (bug reported by spoofy)
- * Added an option to enable/disable the BN assembly code
- * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
- * Disabled obsolete hash functions by default (MD2, MD4); updated
- selftest and benchmark to not test ciphers that have been disabled
- * Updated x509parse_cert_info() to correctly display byte 0 of the
- serial number, setup correct server port in the ssl client example
- * Fixed a critical denial-of-service with X.509 cert. verification:
- peer may cause xyssl to loop indefinitely by sending a certificate
- for which the RSA signature check fails (bug reported by Benoit)
- * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
- HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
- * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
- * Modified ssl_parse_client_key_exchange() to protect against
- Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
- as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
- * Updated rsa_gen_key() so that ctx->N is always nbits in size
- * Fixed assembly PPC compilation errors on Mac OS X, thanks to
- David Barrett and Dusan Semen
-
-= Version 0.8 released on 2007-10-20
-
- * Modified the HMAC functions to handle keys larger
- than 64 bytes, thanks to Stephane Desneux and gary ng
- * Fixed ssl_read_record() to properly update the handshake
- message digests, which fixes IE6/IE7 client authentication
- * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
- * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
- * Added user-defined callbacks for handling I/O and sessions
- * Added lots of debugging output in the SSL/TLS functions
- * Added preliminary X.509 cert. writing by Pascal Vizeli
- * Added preliminary support for the VIA PadLock routines
- * Added AES-CFB mode of operation, contributed by chmike
- * Added an SSL/TLS stress testing program (ssl_test.c)
- * Updated the RSA PKCS#1 code to allow choosing between
- RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
- * Updated ssl_read() to skip 0-length records from OpenSSL
- * Fixed the make install target to comply with *BSD make
- * Fixed a bug in mpi_read_binary() on 64-bit platforms
- * mpi_is_prime() speedups, thanks to Kevin McLaughlin
- * Fixed a long standing memory leak in mpi_is_prime()
- * Replaced realloc with malloc in mpi_grow(), and set
- the sign of zero as positive in mpi_init() (reported
- by Jonathan M. McCune)
-
-= Version 0.7 released on 2007-07-07
-
- * Added support for the MicroBlaze soft-core processor
- * Fixed a bug in ssl_tls.c which sometimes prevented SSL
- connections from being established with non-blocking I/O
- * Fixed a couple bugs in the VS6 and UNIX Makefiles
- * Fixed the "PIC register ebx clobbered in asm" bug
- * Added HMAC starts/update/finish support functions
- * Added the SHA-224, SHA-384 and SHA-512 hash functions
- * Fixed the net_set_*block routines, thanks to Andreas
- * Added a few demonstration programs: md5sum, sha1sum,
- dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
- * Added new bignum import and export helper functions
- * Rewrote README.txt in program/ssl/ca to better explain
- how to create a test PKI
-
-= Version 0.6 released on 2007-04-01
-
- * Ciphers used in SSL/TLS can now be disabled at compile
- time, to reduce the memory footprint on embedded systems
- * Added multiply assembly code for the TriCore and modified
- havege_struct for this processor, thanks to David Patiño
- * Added multiply assembly code for 64-bit PowerPCs,
- thanks to Peking University and the OSU Open Source Lab
- * Added experimental support of Quantum Cryptography
- * Added support for autoconf, contributed by Arnaud Cornet
- * Fixed "long long" compilation issues on IA-64 and PPC64
- * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
- was not being correctly defined on ARM and MIPS
-
-= Version 0.5 released on 2007-03-01
-
- * Added multiply assembly code for SPARC and Alpha
- * Added (beta) support for non-blocking I/O operations
- * Implemented session resuming and client authentication
- * Fixed some portability issues on WinCE, MINIX 3, Plan9
- (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
- * Improved the performance of the EDH key exchange
- * Fixed a bug that caused valid packets with a payload
- size of 16384 bytes to be rejected
-
-= Version 0.4 released on 2007-02-01
-
- * Added support for Ephemeral Diffie-Hellman key exchange
- * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
- * Various improvement to the modular exponentiation code
- * Rewrote the headers to generate the API docs with doxygen
- * Fixed a bug in ssl_encrypt_buf (incorrect padding was
- generated) and in ssl_parse_client_hello (max. client
- version was not properly set), thanks to Didier Rebeix
- * Fixed another bug in ssl_parse_client_hello: clients with
- cipherlists larger than 96 bytes were incorrectly rejected
- * Fixed a couple memory leak in x509_read.c
-
-= Version 0.3 released on 2007-01-01
-
- * Added server-side SSLv3 and TLSv1.0 support
- * Multiple fixes to enhance the compatibility with g++,
- thanks to Xosé Antón Otero Ferreira
- * Fixed a bug in the CBC code, thanks to dowst; also,
- the bignum code is no longer dependent on long long
- * Updated rsa_pkcs1_sign to handle arbitrary large inputs
- * Updated timing.c for improved compatibility with i386
- and 486 processors, thanks to Arnaud Cornet
-
-= Version 0.2 released on 2006-12-01
-
- * Updated timing.c to support ARM and MIPS arch
- * Updated the MPI code to support 8086 on MSVC 1.5
- * Added the copyright notice at the top of havege.h
- * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
- * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
- * Fixed a bug reported by Torsten Lauter in ssl_read_record
- * Fixed a bug in rsa_check_privkey that would wrongly cause
- valid RSA keys to be dismissed (thanks to oldwolf)
- * Fixed a bug in mpi_is_prime that caused some primes to fail
- the Miller-Rabin primality test
-
- I'd also like to thank Younès Hafri for the CRUX linux port,
- Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
- who maintains the Debian package :-)
-
-= Version 0.1 released on 2006-11-01