Merge branch 'development' into iotssl-1251-2.7
Conflict resolution:
* ChangeLog: put the new entries in their rightful place.
* library/x509write_crt.c: the change in development was whitespace
only, so use the one from the iotssl-1251 feature branch.
diff --git a/ChangeLog b/ChangeLog
index b9bc931..31b6f98 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,16 +1,56 @@
mbed TLS ChangeLog (Sorted per branch, date)
-= mbed TLS x.x.x released xxxx-xx-xx
+= mbed TLS x.x.x branch released xxxx-xx-xx
-Bugfix
- * 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. Also, ensure that message digest contexts are freed when
- calling mbedtls_entropy_free().
+Security
+ * 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.
+
+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 Steve 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 for ECDH, controlled by 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().
+
+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.
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 MD2, MD4, MD5, SHA1, SHA256 and SHA512
modules have been deprecated and replaced as shown below. The new
functions change the return type from void to int to allow returning error
@@ -25,6 +65,150 @@
codes are checked for error after every usage, except in the ssl_tls.c
module.
+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 jethrogb, #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 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
+ * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
+ MilenkoMitrovic, #1104
+ * Fix mbedtls_timing_alarm(0) on Unix.
+ * 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 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. Also, ensure that message digest contexts are freed when
+ calling mbedtls_entropy_free().
+
+Changes
+ * Extend cert_write example program by options to set the CRT 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.
+
+= 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
@@ -278,7 +462,7 @@
* 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
+ * Fix a potential integer underflow to buffer overread in
mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
SSL/TLS.
@@ -298,7 +482,7 @@
* 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
+ * 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
@@ -1554,7 +1738,7 @@
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
+ 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
@@ -1583,7 +1767,7 @@
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
+ * During verify trust-CA is only checked for expiration and CRL presence
Bugfixes
* Fixed client authentication compatibility
@@ -1881,9 +2065,9 @@
with random data (Fixed ticket #10)
Changes
- * Debug print of MPI now removes leading zero octets and
+ * 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())
+ * x509parse_key() (and as a consequence x509parse_keyfile())
does not zeroize memory in advance anymore. Use rsa_init()
before parsing a key or keyfile!
@@ -1905,7 +2089,7 @@
printing of X509 CRLs from file
Changes
- * Parsing of PEM files moved to separate module (Fixes
+ * Parsing of PEM files moved to separate module (Fixes
ticket #13). Also possible to remove PEM support for
systems only using DER encoding
@@ -2048,7 +2232,7 @@
* 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
+ * Prevented use of long long in bignum if
POLARSSL_HAVE_LONGLONG not defined (found by Giles
Bathgate).
* Fixed incorrect handling of negative strings in
@@ -2089,7 +2273,7 @@
* 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.
+ 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.
@@ -2263,4 +2447,3 @@
who maintains the Debian package :-)
= Version 0.1 released on 2006-11-01
-