Merge branch 'development' into iotssl-1619
diff --git a/ChangeLog b/ChangeLog index 7433dd7..4a60b2a 100644 --- a/ChangeLog +++ b/ChangeLog
@@ -2,11 +2,66 @@ = mbed TLS x.x.x branch released xxxx-xx-xx -Enhancement - * 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. +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. + +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 + +New deprecations + * Direct manipulation of structure fields of RSA contexts is deprecated. + Users are advised to use the extended RSA API instead. + * Deprecate usage of RSA primitives with non-matching key-type + (e.g., signing with a public key). API Changes * Extend RSA interface by multiple functions allowing structure- @@ -19,60 +74,91 @@ * The configuration option MBEDTLS_RSA_ALT can be used to define alternative implementations of the RSA interface declared in rsa.h. -New deprecations - * Direct manipulation of structure fields of RSA contexts is deprecated. - Users are advised to use the extended RSA API instead. +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. -= mbed TLS x.x.x branch released xxxx-xx-xx += 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. +>>>>>>> development Features * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown() and the context struct mbedtls_platform_context to perform platform-specific setup and teardown operations. The macro MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden - by the user in a platform_alt.h file. This new APIs are required in some - embedded environments that have hardware acceleration support. + by the user in a platform_alt.h file. These new functions are required in + some embedded environments to provide a means of initialising underlying + cryptographic acceleration hardware. API Changes * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the API consistent with mbed TLS 2.5.0. Specifically removed the inline qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt, - mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. #978 - Found by James Cowgill. + mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found + by James Cowgill. #978 + * Certificate verification functions now set flags to -1 in case the full + chain was not verified due to an internal error (including in the verify + callback) or chain length limitations. + * With authmode set to optional, 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, and return an error if it is zero. reported - by roberto. #716 - * Replace preproccessor condition from #if defined(MBEDTLS_THREADING_PTHREAD) + * Add a check if iv_len is zero in GCM, and return an error if it is zero. + Reported by roberto. #716 + * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD) to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will - always be implemented by pthread support. Fix for #696 - * Fix resource leak on windows platform, in mbedtls_x509_crt_parse_path. - In case of failure, when an error occures, goto cleanup. - Found by redplait #590 + always be implemented by pthread support. #696 + * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(), + in the case of an error. Found by redplait. #590 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random. - Reported and fix suggested by guidovranken in #740 + Reported and fix suggested by guidovranken. #740 * Fix conditional preprocessor directives in bignum.h to enable 64-bit compilation when using ARM Compiler 6. * Fix a potential integer overflow in the version verification for DER - encoded X509 CRLs. The overflow would enable maliciously constructed CRLs + encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America * Fix potential integer overflow in the version verification for DER - encoded X509 CSRs. The overflow would enable maliciously constructed CSRs + encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America * Fix a potential integer overflow in the version verification for DER - encoded X509 certificates. The overflow would enable maliciously + encoded X.509 certificates. The overflow could enable maliciously constructed certificates to bypass the certificate verification check. + * Fix a call to the libc function time() to call the platform abstraction + function mbedtls_time() instead. Found by wairua. #666 + * Avoid shadowing of time and index functions through mbed TLS function + arguments. Found by inestlerode. #557. Changes * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of - 64-bit division. #708 + 64-bit division. This is useful on embedded platforms where 64-bit division + created a dependency on external libraries. #708 * Removed mutexes from ECP hardware accelerator code. Now all hardware accelerator code in the library leaves concurrency handling to the platform. Reported by Steven Cooreman. #863 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file config-no-entropy.h to reduce the RAM footprint. + * Added a test script that can be hooked into git that verifies commits + before they are pushed. + * Improve documentation of PKCS1 decryption functions. = mbed TLS 2.5.1 released 2017-06-21