This file gives a brief overview of the major changes between each OpenSSL
release. For more details please read the CHANGES file.
+ Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d:
+
+ o Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
+ o Include the fips configuration module.
+ o Fix OCSP bad key DoS attack CVE-2013-0166
+ o Fix for SSL/TLS/DTLS CBC plaintext recovery attack CVE-2013-0169
+ o Fix for TLS AESNI record handling flaw CVE-2012-2686
+
+ Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c:
+
+ o Fix TLS/DTLS record length checking bug CVE-2012-2333
+ o Don't attempt to use non-FIPS composite ciphers in FIPS mode.
+
+ Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b:
+
+ o Fix compilation error on non-x86 platforms.
+ o Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
+ o Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
+
+ Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a:
+
+ o Fix for ASN1 overflow bug CVE-2012-2110
+ o Workarounds for some servers that hang on long client hellos.
+ o Fix SEGV in AES code.
+
+ Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1:
+
+ o TLS/DTLS heartbeat support.
+ o SCTP support.
+ o RFC 5705 TLS key material exporter.
+ o RFC 5764 DTLS-SRTP negotiation.
+ o Next Protocol Negotiation.
+ o PSS signatures in certificates, requests and CRLs.
+ o Support for password based recipient info for CMS.
+ o Support TLS v1.2 and TLS v1.1.
+ o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
+ o SRP support.
+
+ Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h:
+
+ o Fix for CMS/PKCS#7 MMA CVE-2012-0884
+ o Corrected fix for CVE-2011-4619
+ o Various DTLS fixes.
+
+ Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g:
+
+ o Fix for DTLS DoS issue CVE-2012-0050
+
+ Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f:
+
+ o Fix for DTLS plaintext recovery attack CVE-2011-4108
+ o Clear block padding bytes of SSL 3.0 records CVE-2011-4576
+ o Only allow one SGC handshake restart for SSL/TLS CVE-2011-4619
+ o Check parameters are not NULL in GOST ENGINE CVE-2012-0027
+ o Check for malformed RFC3779 data CVE-2011-4577
+
+ Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e:
+
+ o Fix for CRL vulnerability issue CVE-2011-3207
+ o Fix for ECDH crashes CVE-2011-3210
+ o Protection against EC timing attacks.
+ o Support ECDH ciphersuites for certificates using SHA2 algorithms.
+ o Various DTLS fixes.
+
+ Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d:
+
+ o Fix for security issue CVE-2011-0014
+
+ Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c:
+
+ o Fix for security issue CVE-2010-4180
+ o Fix for CVE-2010-4252
+ o Fix mishandling of absent EC point format extension.
+ o Fix various platform compilation issues.
+ o Corrected fix for security issue CVE-2010-3864.
+
+ Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b:
+
+ o Fix for security issue CVE-2010-3864.
+ o Fix for CVE-2010-2939
+ o Fix WIN32 build system for GOST ENGINE.
+
+ Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a:
+
+ o Fix for security issue CVE-2010-1633.
+ o GOST MAC and CFB fixes.
+
+ Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0:
+
+ o RFC3280 path validation: sufficient to process PKITS tests.
+ o Integrated support for PVK files and keyblobs.
+ o Change default private key format to PKCS#8.
+ o CMS support: able to process all examples in RFC4134
+ o Streaming ASN1 encode support for PKCS#7 and CMS.
+ o Multiple signer and signer add support for PKCS#7 and CMS.
+ o ASN1 printing support.
+ o Whirlpool hash algorithm added.
+ o RFC3161 time stamp support.
+ o New generalised public key API supporting ENGINE based algorithms.
+ o New generalised public key API utilities.
+ o New ENGINE supporting GOST algorithms.
+ o SSL/TLS GOST ciphersuite support.
+ o PKCS#7 and CMS GOST support.
+ o RFC4279 PSK ciphersuite support.
+ o Supported points format extension for ECC ciphersuites.
+ o ecdsa-with-SHA224/256/384/512 signature types.
+ o dsa-with-SHA224 and dsa-with-SHA256 signature types.
+ o Opaque PRF Input TLS extension support.
+ o Updated time routines to avoid OS limitations.
+
+ Major changes between OpenSSL 0.9.8q and OpenSSL 0.9.8r:
+
+ o Fix for security issue CVE-2011-0014
+
+ Major changes between OpenSSL 0.9.8p and OpenSSL 0.9.8q:
+
+ o Fix for security issue CVE-2010-4180
+ o Fix for CVE-2010-4252
+
+ Major changes between OpenSSL 0.9.8o and OpenSSL 0.9.8p:
+
+ o Fix for security issue CVE-2010-3864.
+
+ Major changes between OpenSSL 0.9.8n and OpenSSL 0.9.8o:
+
+ o Fix for security issue CVE-2010-0742.
+ o Various DTLS fixes.
+ o Recognise SHA2 certificates if only SSL algorithms added.
+ o Fix for no-rc4 compilation.
+ o Chil ENGINE unload workaround.
+
+ Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n:
+
+ o CFB cipher definition fixes.
+ o Fix security issues CVE-2010-0740 and CVE-2010-0433.
+
+ Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m:
+
+ o Cipher definition fixes.
+ o Workaround for slow RAND_poll() on some WIN32 versions.
+ o Remove MD2 from algorithm tables.
+ o SPKAC handling fixes.
+ o Support for RFC5746 TLS renegotiation extension.
+ o Compression memory leak fixed.
+ o Compression session resumption fixed.
+ o Ticket and SNI coexistence fixes.
+ o Many fixes to DTLS handling.
+
+ Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l:
+
+ o Temporary work around for CVE-2009-3555: disable renegotiation.
+
+ Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k:
+
+ o Fix various build issues.
+ o Fix security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
+
+ Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j:
+
+ o Fix security issue (CVE-2008-5077)
+ o Merge FIPS 140-2 branch code.
+
+ Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h:
+
+ o CryptoAPI ENGINE support.
+ o Various precautionary measures.
+ o Fix for bugs affecting certificate request creation.
+ o Support for local machine keyset attribute in PKCS#12 files.
+
+ Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g:
+
+ o Backport of CMS functionality to 0.9.8.
+ o Fixes for bugs introduced with 0.9.8f.
+
+ Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f:
+
+ o Add gcc 4.2 support.
+ o Add support for AES and SSE2 assembly lanugauge optimization
+ for VC++ build.
+ o Support for RFC4507bis and server name extensions if explicitly
+ selected at compile time.
+ o DTLS improvements.
+ o RFC4507bis support.
+ o TLS Extensions support.
+
+ Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e:
+
+ o Various ciphersuite selection fixes.
+ o RFC3779 support.
+
+ Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d:
+
+ o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
+ o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
+ o Changes to ciphersuite selection algorithm
+
+ Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c:
+
+ o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
+ o New cipher Camellia
+
+ Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b:
+
+ o Cipher string fixes.
+ o Fixes for VC++ 2005.
+ o Updated ECC cipher suite support.
+ o New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
+ o Zlib compression usage fixes.
+ o Built in dynamic engine compilation support on Win32.
+ o Fixes auto dynamic engine loading in Win32.
+
+ Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a:
+
+ o Fix potential SSL 2.0 rollback, CVE-2005-2969
+ o Extended Windows CE support
+
+ Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8:
+
+ o Major work on the BIGNUM library for higher efficiency and to
+ make operations more streamlined and less contradictory. This
+ is the result of a major audit of the BIGNUM library.
+ o Addition of BIGNUM functions for fields GF(2^m) and NIST
+ curves, to support the Elliptic Crypto functions.
+ o Major work on Elliptic Crypto; ECDH and ECDSA added, including
+ the use through EVP, X509 and ENGINE.
+ o New ASN.1 mini-compiler that's usable through the OpenSSL
+ configuration file.
+ o Added support for ASN.1 indefinite length constructed encoding.
+ o New PKCS#12 'medium level' API to manipulate PKCS#12 files.
+ o Complete rework of shared library construction and linking
+ programs with shared or static libraries, through a separate
+ Makefile.shared.
+ o Rework of the passing of parameters from one Makefile to another.
+ o Changed ENGINE framework to load dynamic engine modules
+ automatically from specifically given directories.
+ o New structure and ASN.1 functions for CertificatePair.
+ o Changed the ZLIB compression method to be stateful.
+ o Changed the key-generation and primality testing "progress"
+ mechanism to take a structure that contains the ticker
+ function and an argument.
+ o New engine module: GMP (performs private key exponentiation).
+ o New engine module: VIA PadLOck ACE extension in VIA C3
+ Nehemiah processors.
+ o Added support for IPv6 addresses in certificate extensions.
+ See RFC 1884, section 2.2.
+ o Added support for certificate policy mappings, policy
+ constraints and name constraints.
+ o Added support for multi-valued AVAs in the OpenSSL
+ configuration file.
+ o Added support for multiple certificates with the same subject
+ in the 'openssl ca' index file.
+ o Make it possible to create self-signed certificates using
+ 'openssl ca -selfsign'.
+ o Make it possible to generate a serial number file with
+ 'openssl ca -create_serial'.
+ o New binary search functions with extended functionality.
+ o New BUF functions.
+ o New STORE structure and library to provide an interface to all
+ sorts of data repositories. Supports storage of public and
+ private keys, certificates, CRLs, numbers and arbitrary blobs.
+ This library is unfortunately unfinished and unused withing
+ OpenSSL.
+ o New control functions for the error stack.
+ o Changed the PKCS#7 library to support one-pass S/MIME
+ processing.
+ o Added the possibility to compile without old deprecated
+ functionality with the OPENSSL_NO_DEPRECATED macro or the
+ 'no-deprecated' argument to the config and Configure scripts.
+ o Constification of all ASN.1 conversion functions, and other
+ affected functions.
+ o Improved platform support for PowerPC.
+ o New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
+ o New X509_VERIFY_PARAM structure to support parametrisation
+ of X.509 path validation.
+ o Major overhaul of RC4 performance on Intel P4, IA-64 and
+ AMD64.
+ o Changed the Configure script to have some algorithms disabled
+ by default. Those can be explicitely enabled with the new
+ argument form 'enable-xxx'.
+ o Change the default digest in 'openssl' commands from MD5 to
+ SHA-1.
+ o Added support for DTLS.
+ o New BIGNUM blinding.
+ o Added support for the RSA-PSS encryption scheme
+ o Added support for the RSA X.931 padding.
+ o Added support for BSD sockets on NetWare.
+ o Added support for files larger than 2GB.
+ o Added initial support for Win64.
+ o Added alternate pkg-config files.
+
+ Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m:
+
+ o FIPS 1.1.1 module linking.
+ o Various ciphersuite selection fixes.
+
+ Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l:
+
+ o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
+ o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
+
+ Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k:
+
+ o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
+
+ Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j:
+
+ o Visual C++ 2005 fixes.
+ o Update Windows build system for FIPS.
+
+ Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i:
+
+ o Give EVP_MAX_MD_SIZE it's old value, except for a FIPS build.
+
+ Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h:
+
+ o Fix SSL 2.0 Rollback, CVE-2005-2969
+ o Allow use of fixed-length exponent on DSA signing
+ o Default fixed-window RSA, DSA, DH private-key operations
+
+ Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g:
+
+ o More compilation issues fixed.
+ o Adaptation to more modern Kerberos API.
+ o Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
+ o Enhanced x86_64 assembler BIGNUM module.
+ o More constification.
+ o Added processing of proxy certificates (RFC 3820).
+
+ Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f:
+
+ o Several compilation issues fixed.
+ o Many memory allocation failure checks added.
+ o Improved comparison of X509 Name type.
+ o Mandatory basic checks on certificates.
+ o Performance improvements.
+
+ Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e:
+
+ o Fix race condition in CRL checking code.
+ o Fixes to PKCS#7 (S/MIME) code.
+
+ Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d:
+
+ o Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
+ o Security: Fix null-pointer assignment in do_change_cipher_spec()
+ o Allow multiple active certificates with same subject in CA index
+ o Multiple X509 verification fixes
+ o Speed up HMAC and other operations
+
+ Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c:
+
+ o Security: fix various ASN1 parsing bugs.
+ o New -ignore_err option to OCSP utility.
+ o Various interop and bug fixes in S/MIME code.
+ o SSL/TLS protocol fix for unrequested client certificates.
+
+ Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b:
+
+ o Security: counter the Klima-Pokorny-Rosa extension of
+ Bleichbacher's attack
+ o Security: make RSA blinding default.
+ o Configuration: Irix fixes, AIX fixes, better mingw support.
+ o Support for new platforms: linux-ia64-ecc.
+ o Build: shared library support fixes.
+ o ASN.1: treat domainComponent correctly.
+ o Documentation: fixes and additions.
+
+ Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a:
+
+ o Security: Important security related bugfixes.
+ o Enhanced compatibility with MIT Kerberos.
+ o Can be built without the ENGINE framework.
+ o IA32 assembler enhancements.
+ o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
+ o Configuration: the no-err option now works properly.
+ o SSL/TLS: now handles manual certificate chain building.
+ o SSL/TLS: certain session ID malfunctions corrected.
+
Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7:
o New library section OCSP.
a separate distribution.
o New elliptic curve library section.
o New AES (Rijndael) library section.
+ o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
+ Linux x86_64, Linux 64-bit on Sparc v9
+ o Extended support for some platforms: VxWorks
+ o Enhanced support for shared libraries.
+ o Now only builds PIC code when shared library support is requested.
+ o Support for pkg-config.
+ o Lots of new manuals.
+ o Makes symbolic links to or copies of manuals to cover all described
+ functions.
o Change DES API to clean up the namespace (some applications link also
against libdes providing similar functions having the same name).
Provide macros for backward compatibility (will be removed in the
o Reworked parts of the BIGNUM code.
o Support for new engines: Broadcom ubsec, Accelerated Encryption
Processing, IBM 4758.
+ o A few new engines added in the demos area.
o Extended and corrected OID (object identifier) table.
o PRNG: query at more locations for a random device, automatic query for
EGD style random sources at several locations.
o SSL/TLS: allow optional cipher choice according to server's preference.
o SSL/TLS: allow server to explicitly set new session ids.
o SSL/TLS: support Kerberos cipher suites (RFC2712).
+ Only supports MIT Kerberos for now.
o SSL/TLS: allow more precise control of renegotiations and sessions.
o SSL/TLS: add callback to retrieve SSL/TLS messages.
o SSL/TLS: support AES cipher suites (RFC3268).
+ Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k:
+
+ o Security: fix various ASN1 parsing bugs.
+ o SSL/TLS protocol fix for unrequested client certificates.
+
+ Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j:
+
+ o Security: counter the Klima-Pokorny-Rosa extension of
+ Bleichbacher's attack
+ o Security: make RSA blinding default.
+ o Build: shared library support fixes.
+
+ Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i:
+
+ o Important security related bugfixes.
+
+ Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h:
+
+ o New configuration targets for Tandem OSS and A/UX.
+ o New OIDs for Microsoft attributes.
+ o Better handling of SSL session caching.
+ o Better comparison of distinguished names.
+ o Better handling of shared libraries in a mixed GNU/non-GNU environment.
+ o Support assembler code with Borland C.
+ o Fixes for length problems.
+ o Fixes for uninitialised variables.
+ o Fixes for memory leaks, some unusual crashes and some race conditions.
+ o Fixes for smaller building problems.
+ o Updates of manuals, FAQ and other instructive documents.
+
+ Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g:
+
+ o Important building fixes on Unix.
+
Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f:
o Various important bugfixes.