Diff: ChangeLog

Revision:

2:bbdeda018a3c

Parent:

1:9ebc941037d5

--- a/ChangeLog	Fri Sep 29 18:41:59 2017 +0100
+++ b/ChangeLog	Fri Sep 29 19:50:30 2017 +0100
@@ -1,5 +1,170 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
+= 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 jethrogb. #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
@@ -164,7 +329,7 @@
    * 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.
 
@@ -184,7 +349,7 @@
    * 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
@@ -1440,7 +1605,7 @@
 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
@@ -1469,7 +1634,7 @@
 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
@@ -1767,9 +1932,9 @@
      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!
 
@@ -1791,7 +1956,7 @@
      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
 
@@ -1934,7 +2099,7 @@
    * 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
@@ -1975,7 +2140,7 @@
    * 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.
@@ -2149,4 +2314,3 @@
     who maintains the Debian package :-)
 
 = Version 0.1 released on 2006-11-01
-