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PolarSSL ChangeLog
= Version 1.2.19 released 2016-01-05
Bugfix
* 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 1.3.15. #280
* Removed potential leak in rsa_rsassa_pkcs1_v15_sign(), found by
JayaraghavendranK. #372
= Version 1.2.18 released 2015-11-04
Security
* Fix potential heap corruption on Windows when
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
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 failures in MPI on Sparc(64) due to use of bad assembly code.
Found by Kurt Danielson. #292
= Version 1.2.17 released 2015-10-06
Security
* 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 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_encode() when the input
buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Intelworks. Not trigerrable remotely in TLS.
* 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' keywork when building as C++. (#279)
Changes
* ssl_set_hostname() now rejects host names longer that 255 bytes (maximum
defined by RFC 1035)
= Version 1.2.16 released 2015-09-17
Security
* 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.)
* 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/
Bugfix
* Fix unused function warning when using MBEDTLS_MDx_ALT or
MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
= Version 1.2.15 released 2015-08-10
Security
* Increase the minimum size of Diffie-Hellman parameters accepted by the
client to 1024 bits, to protect against Logjam attack.
* Increase the size of default Diffie-Hellman parameters on the server to
2048 bits. This can be changed with ssl_set_dh_params().
Bugfix
* Fix thread-safety issue in SSL debug module (found by Edwin van Vliet).
* Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
Leisink).
* Fix missing -static-ligcc when building shared libraries for Windows with
make.
* Fix compile error with armcc5 --gnu.
Changes
* Add SSL_MIN_DHM_BYTES configuration parameter in config.h to choose the
minimum size of Diffie-Hellman parameters accepted by the client.
* The PEM parser now accepts a trailing space at end of lines (#226).
= Version 1.2.14 released 2015-06-26
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
* Make get_pkcs_padding() constant-time
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
* 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 1.1.5 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 seperate 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
ouput 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 dependant 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
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