NEWS.md

   1 NEWS
   2 ====
   3
   4 This file gives a brief overview of the major changes between each OpenSSL
   5 release. For more details please read the CHANGES file.
   6
   7 OpenSSL Releases
   8 ----------------
   9
  10  - [OpenSSL 3.2](#openssl-32)
  11  - [OpenSSL 3.1](#openssl-31)
  12  - [OpenSSL 3.0](#openssl-30)
  13  - [OpenSSL 1.1.1](#openssl-111)
  14  - [OpenSSL 1.1.0](#openssl-110)
  15  - [OpenSSL 1.0.2](#openssl-102)
  16  - [OpenSSL 1.0.1](#openssl-101)
  17  - [OpenSSL 1.0.0](#openssl-100)
  18  - [OpenSSL 0.9.x](#openssl-09x)
  19
  20 OpenSSL 3.2
  21 -----------
  22
  23 ### Major changes between OpenSSL 3.1 and OpenSSL 3.2 [under development]
  24
  25   * Added support for certificate compression (RFC8879), including
  26     library support for Brotli and Zstandard compression.
  27   * Subject or issuer names in X.509 objects are now displayed as UTF-8 strings
  28     by default.
  29   * TCP Fast Open (RFC7413) support is available on Linux, macOS, and FreeBSD
  30     where enabled and supported.
  31   * Full support for provider-based/pluggable signature algorithms in TLS 1.3
  32     operations as well as X.509 data structure support. With a suitable provider
  33     this fully enables use of post-quantum/quantum-safe cryptography.
  34
  35 OpenSSL 3.1
  36 -----------
  37
  38 ### Major changes between OpenSSL 3.1.0 and OpenSSL 3.1.1 [under development]
  39
  40   * Fixed handling of invalid certificate policies in leaf certificates
  41     ([CVE-2023-0465])
  42   * Limited the number of nodes created in a policy tree ([CVE-2023-0464])
  43
  44 ### Major changes between OpenSSL 3.0 and OpenSSL 3.1.0 [14 Mar 2023]
  45
  46   * SSL 3, TLS 1.0, TLS 1.1, and DTLS 1.0 only work at security level 0.
  47   * Performance enhancements and new platform support including new
  48     assembler code algorithm implementations.
  49   * Deprecated LHASH statistics functions.
  50   * FIPS 140-3 compliance changes.
  51
  52 OpenSSL 3.0
  53 -----------
  54
  55 ### Major changes between OpenSSL 3.0.7 and OpenSSL 3.0.8 [7 Feb 2023]
  56
  57   * Fixed NULL dereference during PKCS7 data verification ([CVE-2023-0401])
  58   * Fixed X.400 address type confusion in X.509 GeneralName ([CVE-2023-0286])
  59   * Fixed NULL dereference validating DSA public key ([CVE-2023-0217])
  60   * Fixed Invalid pointer dereference in d2i_PKCS7 functions ([CVE-2023-0216])
  61   * Fixed Use-after-free following BIO_new_NDEF ([CVE-2023-0215])
  62   * Fixed Double free after calling PEM_read_bio_ex ([CVE-2022-4450])
  63   * Fixed Timing Oracle in RSA Decryption ([CVE-2022-4304])
  64   * Fixed X.509 Name Constraints Read Buffer Overflow ([CVE-2022-4203])
  65   * Fixed X.509 Policy Constraints Double Locking ([CVE-2022-3996])
  66
  67 ### Major changes between OpenSSL 3.0.6 and OpenSSL 3.0.7 [1 Nov 2022]
  68
  69   * Added RIPEMD160 to the default provider.
  70   * Fixed regressions introduced in 3.0.6 version.
  71   * Fixed two buffer overflows in punycode decoding functions.
  72     ([CVE-2022-3786]) and ([CVE-2022-3602])
  73
  74 ### Major changes between OpenSSL 3.0.5 and OpenSSL 3.0.6 [11 Oct 2022]
  75
  76   * Fix for custom ciphers to prevent accidental use of NULL encryption
  77     ([CVE-2022-3358])
  78
  79 ### Major changes between OpenSSL 3.0.4 and OpenSSL 3.0.5 [5 Jul 2022]
  80
  81   * Fixed heap memory corruption with RSA private key operation
  82     ([CVE-2022-2274])
  83   * Fixed AES OCB failure to encrypt some bytes on 32-bit x86 platforms
  84     ([CVE-2022-2097])
  85
  86 ### Major changes between OpenSSL 3.0.3 and OpenSSL 3.0.4 [21 Jun 2022]
  87
  88   * Fixed additional bugs in the c_rehash script which was not properly
  89     sanitising shell metacharacters to prevent command injection
  90     ([CVE-2022-2068])
  91
  92 ### Major changes between OpenSSL 3.0.2 and OpenSSL 3.0.3 [3 May 2022]
  93
  94   * Fixed a bug in the c_rehash script which was not properly sanitising shell
  95     metacharacters to prevent command injection ([CVE-2022-1292])
  96   * Fixed a bug in the function `OCSP_basic_verify` that verifies the signer
  97     certificate on an OCSP response ([CVE-2022-1343])
  98   * Fixed a bug where the RC4-MD5 ciphersuite incorrectly used the
  99     AAD data as the MAC key ([CVE-2022-1434])
 100   * Fix a bug in the OPENSSL_LH_flush() function that breaks reuse of the memory
 101     occuppied by the removed hash table entries ([CVE-2022-1473])
 102
 103 ### Major changes between OpenSSL 3.0.1 and OpenSSL 3.0.2 [15 Mar 2022]
 104
 105   * Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever
 106     for non-prime moduli ([CVE-2022-0778])
 107
 108 ### Major changes between OpenSSL 3.0.0 and OpenSSL 3.0.1 [14 Dec 2021]
 109
 110   * Fixed invalid handling of X509_verify_cert() internal errors in libssl
 111     ([CVE-2021-4044])
 112   * Allow fetching an operation from the provider that owns an unexportable key
 113     as a fallback if that is still allowed by the property query.
 114
 115 ### Major changes between OpenSSL 1.1.1 and OpenSSL 3.0.0 [7 sep 2021]
 116
 117   * Enhanced 'openssl list' with many new options.
 118   * Added migration guide to man7.
 119   * Implemented support for fully "pluggable" TLSv1.3 groups.
 120   * Added support for Kernel TLS (KTLS).
 121   * Changed the license to the Apache License v2.0.
 122   * Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2,
 123     RC4, RC5, and DES to the legacy provider.
 124   * Moved the EVP digests MD2, MD4, MDC2, WHIRLPOOL and RIPEMD-160 to the legacy
 125     provider.
 126   * Added convenience functions for generating asymmetric key pairs.
 127   * Deprecated the `OCSP_REQ_CTX` type and functions.
 128   * Deprecated the `EC_KEY` and `EC_KEY_METHOD` types and functions.
 129   * Deprecated the `RSA` and `RSA_METHOD` types and functions.
 130   * Deprecated the `DSA` and `DSA_METHOD` types and functions.
 131   * Deprecated the `DH` and `DH_METHOD` types and functions.
 132   * Deprecated the `ERR_load_` functions.
 133   * Remove the `RAND_DRBG` API.
 134   * Deprecated the `ENGINE` API.
 135   * Added `OSSL_LIB_CTX`, a libcrypto library context.
 136   * Added various `_ex` functions to the OpenSSL API that support using
 137     a non-default `OSSL_LIB_CTX`.
 138   * Interactive mode is removed from the 'openssl' program.
 139   * The X25519, X448, Ed25519, Ed448, SHAKE128 and SHAKE256 algorithms are
 140     included in the FIPS provider.
 141   * X509 certificates signed using SHA1 are no longer allowed at security
 142     level 1 or higher. The default security level for TLS is 1, so
 143     certificates signed using SHA1 are by default no longer trusted to
 144     authenticate servers or clients.
 145   * enable-crypto-mdebug and enable-crypto-mdebug-backtrace were mostly
 146     disabled; the project uses address sanitize/leak-detect instead.
 147   * Added a Certificate Management Protocol (CMP, RFC 4210) implementation
 148     also covering CRMF (RFC 4211) and HTTP transfer (RFC 6712).
 149     It is part of the crypto lib and adds a 'cmp' app with a demo configuration.
 150     All widely used CMP features are supported for both clients and servers.
 151   * Added a proper HTTP client supporting GET with optional redirection, POST,
 152     arbitrary request and response content types, TLS, persistent connections,
 153     connections via HTTP(s) proxies, connections and exchange via user-defined
 154     BIOs (allowing implicit connections), and timeout checks.
 155   * Added util/check-format.pl for checking adherence to the coding guidelines.
 156   * Added OSSL_ENCODER, a generic encoder API.
 157   * Added OSSL_DECODER, a generic decoder API.
 158   * Added OSSL_PARAM_BLD, an easier to use API to OSSL_PARAM.
 159   * Added error raising macros, ERR_raise() and ERR_raise_data().
 160   * Deprecated ERR_put_error(), ERR_get_error_line(), ERR_get_error_line_data(),
 161     ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
 162     ERR_func_error_string().
 163   * Added OSSL_PROVIDER_available(), to check provider availability.
 164   * Added 'openssl mac' that uses the EVP_MAC API.
 165   * Added 'openssl kdf' that uses the EVP_KDF API.
 166   * Add OPENSSL_info() and 'openssl info' to get built-in data.
 167   * Add support for enabling instrumentation through trace and debug
 168     output.
 169   * Changed our version number scheme and set the next major release to
 170     3.0.0
 171   * Added EVP_MAC, an EVP layer MAC API, and a generic EVP_PKEY to EVP_MAC
 172     bridge.  Supported MACs are: BLAKE2, CMAC, GMAC, HMAC, KMAC, POLY1305
 173     and SIPHASH.
 174   * Removed the heartbeat message in DTLS feature.
 175   * Added EVP_KDF, an EVP layer KDF and PRF API, and a generic EVP_PKEY to
 176     EVP_KDF bridge.  Supported KDFs are: HKDF, KBKDF, KRB5 KDF, PBKDF2,
 177     PKCS12 KDF, SCRYPT, SSH KDF, SSKDF, TLS1 PRF, X9.42 KDF and X9.63 KDF.
 178   * All of the low-level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224,
 179     SHA256, SHA384, SHA512 and Whirlpool digest functions have been
 180     deprecated.
 181   * All of the low-level AES, Blowfish, Camellia, CAST, DES, IDEA, RC2,
 182     RC4, RC5 and SEED cipher functions have been deprecated.
 183   * All of the low-level DH, DSA, ECDH, ECDSA and RSA public key functions
 184     have been deprecated.
 185   * SSL 3, TLS 1.0, TLS 1.1, and DTLS 1.0 only work at security level 0,
 186     except when RSA key exchange without SHA1 is used.
 187   * Added providers, a new pluggability concept that will replace the
 188     ENGINE API and ENGINE implementations.
 189
 190 OpenSSL 1.1.1
 191 -------------
 192
 193 ### Major changes between OpenSSL 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]
 194
 195   * Fixed an SM2 Decryption Buffer Overflow ([CVE-2021-3711])
 196   * Fixed various read buffer overruns processing ASN.1 strings ([CVE-2021-3712])
 197
 198 ### Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]
 199
 200   * Fixed a problem with verifying a certificate chain when using the
 201     X509_V_FLAG_X509_STRICT flag ([CVE-2021-3450])
 202   * Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
 203     crafted renegotiation ClientHello message from a client ([CVE-2021-3449])
 204
 205 ### Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
 206
 207   * Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
 208     function ([CVE-2021-23841])
 209   * Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
 210     padding mode to correctly check for rollback attacks
 211   * Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
 212     EVP_DecryptUpdate functions ([CVE-2021-23840])
 213   * Fixed SRP_Calc_client_key so that it runs in constant time
 214
 215 ### Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]
 216
 217   * Fixed NULL pointer deref in GENERAL_NAME_cmp ([CVE-2020-1971])
 218
 219 ### Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]
 220
 221   * Disallow explicit curve parameters in verifications chains when
 222     X509_V_FLAG_X509_STRICT is used
 223   * Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
 224     contexts
 225   * Oracle Developer Studio will start reporting deprecation warnings
 226
 227 ### Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]
 228
 229   * Fixed segmentation fault in SSL_check_chain() ([CVE-2020-1967])
 230
 231 ### Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
 232
 233   * Revert the unexpected EOF reporting via SSL_ERROR_SSL
 234
 235 ### Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
 236
 237   * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
 238     used in exponentiation with 512-bit moduli ([CVE-2019-1551])
 239
 240 ### Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
 241
 242   * Fixed a fork protection issue ([CVE-2019-1549])
 243   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 244     ([CVE-2019-1563])
 245   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 246     used even when parsing explicit parameters
 247   * Compute ECC cofactors if not provided during EC_GROUP construction
 248     ([CVE-2019-1547])
 249   * Early start up entropy quality from the DEVRANDOM seed source has been
 250     improved for older Linux systems
 251   * Correct the extended master secret constant on EBCDIC systems
 252   * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
 253   * Changed DH_check to accept parameters with order q and 2q subgroups
 254   * Significantly reduce secure memory usage by the randomness pools
 255   * Revert the DEVRANDOM_WAIT feature for Linux systems
 256
 257 ### Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]
 258
 259   * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
 260
 261 ### Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]
 262
 263   * Change the info callback signals for the start and end of a post-handshake
 264     message exchange in TLSv1.3.
 265   * Fix a bug in DTLS over SCTP. This breaks interoperability with older
 266     versions of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.
 267
 268 ### Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
 269
 270   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 271   * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
 272
 273 ### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
 274
 275   * Support for TLSv1.3 added. The TLSv1.3 implementation includes:
 276     * Fully compliant implementation of RFC8446 (TLSv1.3) on by default
 277     * Early data (0-RTT)
 278     * Post-handshake authentication and key update
 279     * Middlebox Compatibility Mode
 280     * TLSv1.3 PSKs
 281     * Support for all five RFC8446 ciphersuites
 282     * RSA-PSS signature algorithms (backported to TLSv1.2)
 283     * Configurable session ticket support
 284     * Stateless server support
 285     * Rewrite of the packet construction code for "safer" packet handling
 286     * Rewrite of the extension handling code
 287     For further important information, see the [TLS1.3 page](
 288     https://wiki.openssl.org/index.php/TLS1.3) in the OpenSSL Wiki.
 289
 290   * Complete rewrite of the OpenSSL random number generator to introduce the
 291     following capabilities
 292       * The default RAND method now utilizes an AES-CTR DRBG according to
 293         NIST standard SP 800-90Ar1.
 294       * Support for multiple DRBG instances with seed chaining.
 295       * There is a public and private DRBG instance.
 296       * The DRBG instances are fork-safe.
 297       * Keep all global DRBG instances on the secure heap if it is enabled.
 298       * The public and private DRBG instance are per thread for lock free
 299       operation
 300   * Support for various new cryptographic algorithms including:
 301       * SHA3
 302       * SHA512/224 and SHA512/256
 303       * EdDSA (both Ed25519 and Ed448) including X509 and TLS support
 304       * X448 (adding to the existing X25519 support in 1.1.0)
 305       * Multi-prime RSA
 306       * SM2
 307       * SM3
 308       * SM4
 309       * SipHash
 310       * ARIA (including TLS support)
 311   * Significant Side-Channel attack security improvements
 312   * Add a new ClientHello callback to provide the ability to adjust the SSL
 313   object at an early stage.
 314   * Add 'Maximum Fragment Length' TLS extension negotiation and support
 315   * A new STORE module, which implements a uniform and URI based reader of
 316    stores that can contain keys, certificates, CRLs and numerous other
 317   objects.
 318   * Move the display of configuration data to configdata.pm.
 319   * Allow GNU style "make variables" to be used with Configure.
 320   * Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
 321   * Rewrite of devcrypto engine
 322
 323 OpenSSL 1.1.0
 324 -------------
 325
 326 ### Major changes between OpenSSL 1.1.0k and OpenSSL 1.1.0l [10 Sep 2019]
 327
 328   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 329     ([CVE-2019-1563])
 330   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 331     used even when parsing explicit parameters
 332   * Compute ECC cofactors if not provided during EC_GROUP construction
 333     ([CVE-2019-1547])
 334   * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
 335
 336 ### Major changes between OpenSSL 1.1.0j and OpenSSL 1.1.0k [28 May 2019]
 337
 338   * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
 339
 340 ### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.0j [20 Nov 2018]
 341
 342   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 343   * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
 344
 345 ### Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [14 Aug 2018]
 346
 347   * Client DoS due to large DH parameter ([CVE-2018-0732])
 348   * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
 349
 350 ### Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [27 Mar 2018]
 351
 352   * Constructed ASN.1 types with a recursive definition could exceed the
 353     stack ([CVE-2018-0739])
 354   * Incorrect CRYPTO_memcmp on HP-UX PA-RISC ([CVE-2018-0733])
 355   * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
 356
 357 ### Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
 358
 359   * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
 360   * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
 361
 362 ### Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
 363
 364   * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
 365
 366 ### Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
 367
 368   * Encrypt-Then-Mac renegotiation crash ([CVE-2017-3733])
 369
 370 ### Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
 371
 372   * Truncated packet could crash via OOB read ([CVE-2017-3731])
 373   * Bad (EC)DHE parameters cause a client crash ([CVE-2017-3730])
 374   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
 375
 376 ### Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
 377
 378   * ChaCha20/Poly1305 heap-buffer-overflow ([CVE-2016-7054])
 379   * CMS Null dereference ([CVE-2016-7053])
 380   * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
 381
 382 ### Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
 383
 384   * Fix Use After Free for large message sizes ([CVE-2016-6309])
 385
 386 ### Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
 387
 388   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 389   * SSL_peek() hang on empty record ([CVE-2016-6305])
 390   * Excessive allocation of memory in tls_get_message_header()
 391     ([CVE-2016-6307])
 392   * Excessive allocation of memory in dtls1_preprocess_fragment()
 393     ([CVE-2016-6308])
 394
 395 ### Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
 396
 397   * Copyright text was shrunk to a boilerplate that points to the license
 398   * "shared" builds are now the default when possible
 399   * Added support for "pipelining"
 400   * Added the AFALG engine
 401   * New threading API implemented
 402   * Support for ChaCha20 and Poly1305 added to libcrypto and libssl
 403   * Support for extended master secret
 404   * CCM ciphersuites
 405   * Reworked test suite, now based on perl, Test::Harness and Test::More
 406   * *Most* libcrypto and libssl public structures were made opaque,
 407     including:
 408     BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
 409     DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
 410     BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
 411     EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
 412     X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
 413     X509_LOOKUP, X509_LOOKUP_METHOD
 414   * libssl internal structures made opaque
 415   * SSLv2 support removed
 416   * Kerberos ciphersuite support removed
 417   * RC4 removed from DEFAULT ciphersuites in libssl
 418   * 40 and 56 bit cipher support removed from libssl
 419   * All public header files moved to include/openssl, no more symlinking
 420   * SSL/TLS state machine, version negotiation and record layer rewritten
 421   * EC revision: now operations use new EC_KEY_METHOD.
 422   * Support for OCB mode added to libcrypto
 423   * Support for asynchronous crypto operations added to libcrypto and libssl
 424   * Deprecated interfaces can now be disabled at build time either
 425     relative to the latest release via the "no-deprecated" Configure
 426     argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
 427   * Application software can be compiled with -DOPENSSL_API_COMPAT=version
 428     to ensure that features deprecated in that version are not exposed.
 429   * Support for RFC6698/RFC7671 DANE TLSA peer authentication
 430   * Change of Configure to use --prefix as the main installation
 431     directory location rather than --openssldir.  The latter becomes
 432     the directory for certs, private key and openssl.cnf exclusively.
 433   * Reworked BIO networking library, with full support for IPv6.
 434   * New "unified" build system
 435   * New security levels
 436   * Support for scrypt algorithm
 437   * Support for X25519
 438   * Extended SSL_CONF support using configuration files
 439   * KDF algorithm support. Implement TLS PRF as a KDF.
 440   * Support for Certificate Transparency
 441   * HKDF support.
 442
 443 OpenSSL 1.0.2
 444 -------------
 445
 446 ### Major changes between OpenSSL 1.0.2s and OpenSSL 1.0.2t [10 Sep 2019]
 447
 448   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 449     ([CVE-2019-1563])
 450   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 451     used even when parsing explicit parameters
 452   * Compute ECC cofactors if not provided during EC_GROUP construction
 453     ([CVE-2019-1547])
 454   * Document issue with installation paths in diverse Windows builds
 455     ([CVE-2019-1552])
 456
 457 ### Major changes between OpenSSL 1.0.2r and OpenSSL 1.0.2s [28 May 2019]
 458
 459   * None
 460
 461 ### Major changes between OpenSSL 1.0.2q and OpenSSL 1.0.2r [26 Feb 2019]
 462
 463   * 0-byte record padding oracle ([CVE-2019-1559])
 464
 465 ### Major changes between OpenSSL 1.0.2p and OpenSSL 1.0.2q [20 Nov 2018]
 466
 467   * Microarchitecture timing vulnerability in ECC scalar multiplication ([CVE-2018-5407])
 468   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 469
 470 ### Major changes between OpenSSL 1.0.2o and OpenSSL 1.0.2p [14 Aug 2018]
 471
 472   * Client DoS due to large DH parameter ([CVE-2018-0732])
 473   * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
 474
 475 ### Major changes between OpenSSL 1.0.2n and OpenSSL 1.0.2o [27 Mar 2018]
 476
 477   * Constructed ASN.1 types with a recursive definition could exceed the
 478     stack ([CVE-2018-0739])
 479
 480 ### Major changes between OpenSSL 1.0.2m and OpenSSL 1.0.2n [7 Dec 2017]
 481
 482   * Read/write after SSL object in error state ([CVE-2017-3737])
 483   * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
 484
 485 ### Major changes between OpenSSL 1.0.2l and OpenSSL 1.0.2m [2 Nov 2017]
 486
 487   * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
 488   * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
 489
 490 ### Major changes between OpenSSL 1.0.2k and OpenSSL 1.0.2l [25 May 2017]
 491
 492   * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
 493
 494 ### Major changes between OpenSSL 1.0.2j and OpenSSL 1.0.2k [26 Jan 2017]
 495
 496   * Truncated packet could crash via OOB read ([CVE-2017-3731])
 497   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
 498   * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
 499
 500 ### Major changes between OpenSSL 1.0.2i and OpenSSL 1.0.2j [26 Sep 2016]
 501
 502   * Missing CRL sanity check ([CVE-2016-7052])
 503
 504 ### Major changes between OpenSSL 1.0.2h and OpenSSL 1.0.2i [22 Sep 2016]
 505
 506   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 507   * SWEET32 Mitigation ([CVE-2016-2183])
 508   * OOB write in MDC2_Update() ([CVE-2016-6303])
 509   * Malformed SHA512 ticket DoS ([CVE-2016-6302])
 510   * OOB write in BN_bn2dec() ([CVE-2016-2182])
 511   * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
 512   * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
 513   * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
 514   * DTLS buffered message DoS ([CVE-2016-2179])
 515   * DTLS replay protection DoS ([CVE-2016-2181])
 516   * Certificate message OOB reads ([CVE-2016-6306])
 517
 518 ### Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
 519
 520   * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
 521   * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
 522   * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
 523   * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
 524   * EBCDIC overread ([CVE-2016-2176])
 525   * Modify behavior of ALPN to invoke callback after SNI/servername
 526     callback, such that updates to the SSL_CTX affect ALPN.
 527   * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
 528     the default.
 529   * Only remove the SSLv2 methods with the no-ssl2-method option.
 530
 531 ### Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
 532
 533   * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
 534   * Disable SSLv2 default build, default negotiation and weak ciphers
 535     ([CVE-2016-0800])
 536   * Fix a double-free in DSA code ([CVE-2016-0705])
 537   * Disable SRP fake user seed to address a server memory leak
 538     ([CVE-2016-0798])
 539   * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
 540     ([CVE-2016-0797])
 541   * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
 542   * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
 543
 544 ### Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
 545
 546   * DH small subgroups ([CVE-2016-0701])
 547   * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
 548
 549 ### Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
 550
 551   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2015-3193])
 552   * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
 553   * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
 554   * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
 555   * In DSA_generate_parameters_ex, if the provided seed is too short,
 556     return an error
 557
 558 ### Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
 559
 560   * Alternate chains certificate forgery ([CVE-2015-1793])
 561   * Race condition handling PSK identify hint ([CVE-2015-3196])
 562
 563 ### Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
 564
 565   * Fix HMAC ABI incompatibility
 566
 567 ### Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
 568
 569   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 570   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 571   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 572   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 573   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 574
 575 ### Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
 576
 577   * OpenSSL 1.0.2 ClientHello sigalgs DoS fix ([CVE-2015-0291])
 578   * Multiblock corrupted pointer fix ([CVE-2015-0290])
 579   * Segmentation fault in DTLSv1_listen fix ([CVE-2015-0207])
 580   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 581   * Segmentation fault for invalid PSS parameters fix ([CVE-2015-0208])
 582   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 583   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 584   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 585   * Empty CKE with client auth and DHE fix ([CVE-2015-1787])
 586   * Handshake with unseeded PRNG fix ([CVE-2015-0285])
 587   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 588   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 589   * Removed the export ciphers from the DEFAULT ciphers
 590
 591 ### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]
 592
 593   * Suite B support for TLS 1.2 and DTLS 1.2
 594   * Support for DTLS 1.2
 595   * TLS automatic EC curve selection.
 596   * API to set TLS supported signature algorithms and curves
 597   * SSL_CONF configuration API.
 598   * TLS Brainpool support.
 599   * ALPN support.
 600   * CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
 601
 602 OpenSSL 1.0.1
 603 -------------
 604
 605 ### Major changes between OpenSSL 1.0.1t and OpenSSL 1.0.1u [22 Sep 2016]
 606
 607   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 608   * SWEET32 Mitigation ([CVE-2016-2183])
 609   * OOB write in MDC2_Update() ([CVE-2016-6303])
 610   * Malformed SHA512 ticket DoS ([CVE-2016-6302])
 611   * OOB write in BN_bn2dec() ([CVE-2016-2182])
 612   * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
 613   * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
 614   * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
 615   * DTLS buffered message DoS ([CVE-2016-2179])
 616   * DTLS replay protection DoS ([CVE-2016-2181])
 617   * Certificate message OOB reads ([CVE-2016-6306])
 618
 619 ### Major changes between OpenSSL 1.0.1s and OpenSSL 1.0.1t [3 May 2016]
 620
 621   * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
 622   * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
 623   * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
 624   * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
 625   * EBCDIC overread ([CVE-2016-2176])
 626   * Modify behavior of ALPN to invoke callback after SNI/servername
 627     callback, such that updates to the SSL_CTX affect ALPN.
 628   * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
 629     the default.
 630   * Only remove the SSLv2 methods with the no-ssl2-method option.
 631
 632 ### Major changes between OpenSSL 1.0.1r and OpenSSL 1.0.1s [1 Mar 2016]
 633
 634   * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
 635   * Disable SSLv2 default build, default negotiation and weak ciphers
 636     ([CVE-2016-0800])
 637   * Fix a double-free in DSA code ([CVE-2016-0705])
 638   * Disable SRP fake user seed to address a server memory leak
 639     ([CVE-2016-0798])
 640   * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
 641     ([CVE-2016-0797])
 642   * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
 643   * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
 644
 645 ### Major changes between OpenSSL 1.0.1q and OpenSSL 1.0.1r [28 Jan 2016]
 646
 647   * Protection for DH small subgroup attacks
 648   * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
 649
 650 ### Major changes between OpenSSL 1.0.1p and OpenSSL 1.0.1q [3 Dec 2015]
 651
 652   * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
 653   * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
 654   * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
 655   * In DSA_generate_parameters_ex, if the provided seed is too short,
 656     return an error
 657
 658 ### Major changes between OpenSSL 1.0.1o and OpenSSL 1.0.1p [9 Jul 2015]
 659
 660   * Alternate chains certificate forgery ([CVE-2015-1793])
 661   * Race condition handling PSK identify hint ([CVE-2015-3196])
 662
 663 ### Major changes between OpenSSL 1.0.1n and OpenSSL 1.0.1o [12 Jun 2015]
 664
 665   * Fix HMAC ABI incompatibility
 666
 667 ### Major changes between OpenSSL 1.0.1m and OpenSSL 1.0.1n [11 Jun 2015]
 668
 669   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 670   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 671   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 672   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 673   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 674
 675 ### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.1m [19 Mar 2015]
 676
 677   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 678   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 679   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 680   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 681   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 682   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 683   * Removed the export ciphers from the DEFAULT ciphers
 684
 685 ### Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
 686
 687   * Build fixes for the Windows and OpenVMS platforms
 688
 689 ### Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
 690
 691   * Fix for [CVE-2014-3571]
 692   * Fix for [CVE-2015-0206]
 693   * Fix for [CVE-2014-3569]
 694   * Fix for [CVE-2014-3572]
 695   * Fix for [CVE-2015-0204]
 696   * Fix for [CVE-2015-0205]
 697   * Fix for [CVE-2014-8275]
 698   * Fix for [CVE-2014-3570]
 699
 700 ### Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
 701
 702   * Fix for [CVE-2014-3513]
 703   * Fix for [CVE-2014-3567]
 704   * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
 705   * Fix for [CVE-2014-3568]
 706
 707 ### Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
 708
 709   * Fix for [CVE-2014-3512]
 710   * Fix for [CVE-2014-3511]
 711   * Fix for [CVE-2014-3510]
 712   * Fix for [CVE-2014-3507]
 713   * Fix for [CVE-2014-3506]
 714   * Fix for [CVE-2014-3505]
 715   * Fix for [CVE-2014-3509]
 716   * Fix for [CVE-2014-5139]
 717   * Fix for [CVE-2014-3508]
 718
 719 ### Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
 720
 721   * Fix for [CVE-2014-0224]
 722   * Fix for [CVE-2014-0221]
 723   * Fix for [CVE-2014-0198]
 724   * Fix for [CVE-2014-0195]
 725   * Fix for [CVE-2014-3470]
 726   * Fix for [CVE-2010-5298]
 727
 728 ### Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
 729
 730   * Fix for [CVE-2014-0160]
 731   * Add TLS padding extension workaround for broken servers.
 732   * Fix for [CVE-2014-0076]
 733
 734 ### Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
 735
 736   * Don't include gmt_unix_time in TLS server and client random values
 737   * Fix for TLS record tampering bug ([CVE-2013-4353])
 738   * Fix for TLS version checking bug ([CVE-2013-6449])
 739   * Fix for DTLS retransmission bug ([CVE-2013-6450])
 740
 741 ### Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]
 742
 743   * Corrected fix for ([CVE-2013-0169])
 744
 745 ### Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]
 746
 747   * Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
 748   * Include the fips configuration module.
 749   * Fix OCSP bad key DoS attack ([CVE-2013-0166])
 750   * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
 751   * Fix for TLS AESNI record handling flaw ([CVE-2012-2686])
 752
 753 ### Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]
 754
 755   * Fix TLS/DTLS record length checking bug ([CVE-2012-2333])
 756   * Don't attempt to use non-FIPS composite ciphers in FIPS mode.
 757
 758 ### Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]
 759
 760   * Fix compilation error on non-x86 platforms.
 761   * Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
 762   * Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
 763
 764 ### Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]
 765
 766   * Fix for ASN1 overflow bug ([CVE-2012-2110])
 767   * Workarounds for some servers that hang on long client hellos.
 768   * Fix SEGV in AES code.
 769
 770 ### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]
 771
 772   * TLS/DTLS heartbeat support.
 773   * SCTP support.
 774   * RFC 5705 TLS key material exporter.
 775   * RFC 5764 DTLS-SRTP negotiation.
 776   * Next Protocol Negotiation.
 777   * PSS signatures in certificates, requests and CRLs.
 778   * Support for password based recipient info for CMS.
 779   * Support TLS v1.2 and TLS v1.1.
 780   * Preliminary FIPS capability for unvalidated 2.0 FIPS module.
 781   * SRP support.
 782
 783 OpenSSL 1.0.0
 784 -------------
 785
 786 ### Major changes between OpenSSL 1.0.0s and OpenSSL 1.0.0t [3 Dec 2015]
 787
 788   * X509_ATTRIBUTE memory leak (([CVE-2015-3195]))
 789   * Race condition handling PSK identify hint ([CVE-2015-3196])
 790
 791 ### Major changes between OpenSSL 1.0.0r and OpenSSL 1.0.0s [11 Jun 2015]
 792
 793   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 794   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 795   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 796   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 797   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 798
 799 ### Major changes between OpenSSL 1.0.0q and OpenSSL 1.0.0r [19 Mar 2015]
 800
 801   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 802   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 803   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 804   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 805   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 806   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 807   * Removed the export ciphers from the DEFAULT ciphers
 808
 809 ### Major changes between OpenSSL 1.0.0p and OpenSSL 1.0.0q [15 Jan 2015]
 810
 811   * Build fixes for the Windows and OpenVMS platforms
 812
 813 ### Major changes between OpenSSL 1.0.0o and OpenSSL 1.0.0p [8 Jan 2015]
 814
 815   * Fix for [CVE-2014-3571]
 816   * Fix for [CVE-2015-0206]
 817   * Fix for [CVE-2014-3569]
 818   * Fix for [CVE-2014-3572]
 819   * Fix for [CVE-2015-0204]
 820   * Fix for [CVE-2015-0205]
 821   * Fix for [CVE-2014-8275]
 822   * Fix for [CVE-2014-3570]
 823
 824 ### Major changes between OpenSSL 1.0.0n and OpenSSL 1.0.0o [15 Oct 2014]
 825
 826   * Fix for [CVE-2014-3513]
 827   * Fix for [CVE-2014-3567]
 828   * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
 829   * Fix for [CVE-2014-3568]
 830
 831 ### Major changes between OpenSSL 1.0.0m and OpenSSL 1.0.0n [6 Aug 2014]
 832
 833   * Fix for [CVE-2014-3510]
 834   * Fix for [CVE-2014-3507]
 835   * Fix for [CVE-2014-3506]
 836   * Fix for [CVE-2014-3505]
 837   * Fix for [CVE-2014-3509]
 838   * Fix for [CVE-2014-3508]
 839
 840   Known issues in OpenSSL 1.0.0m:
 841
 842   * EAP-FAST and other applications using tls_session_secret_cb
 843     won't resume sessions. Fixed in 1.0.0n-dev
 844   * Compilation failure of s3_pkt.c on some platforms due to missing
 845     `<limits.h>` include. Fixed in 1.0.0n-dev
 846
 847 ### Major changes between OpenSSL 1.0.0l and OpenSSL 1.0.0m [5 Jun 2014]
 848
 849   * Fix for [CVE-2014-0224]
 850   * Fix for [CVE-2014-0221]
 851   * Fix for [CVE-2014-0198]
 852   * Fix for [CVE-2014-0195]
 853   * Fix for [CVE-2014-3470]
 854   * Fix for [CVE-2014-0076]
 855   * Fix for [CVE-2010-5298]
 856
 857 ### Major changes between OpenSSL 1.0.0k and OpenSSL 1.0.0l [6 Jan 2014]
 858
 859   * Fix for DTLS retransmission bug ([CVE-2013-6450])
 860
 861 ### Major changes between OpenSSL 1.0.0j and OpenSSL 1.0.0k [5 Feb 2013]
 862
 863   * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
 864   * Fix OCSP bad key DoS attack ([CVE-2013-0166])
 865
 866 ### Major changes between OpenSSL 1.0.0i and OpenSSL 1.0.0j [10 May 2012]
 867
 868   * Fix DTLS record length checking bug ([CVE-2012-2333])
 869
 870 ### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.0i [19 Apr 2012]
 871
 872   * Fix for ASN1 overflow bug ([CVE-2012-2110])
 873
 874 ### Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]
 875
 876   * Fix for CMS/PKCS#7 MMA ([CVE-2012-0884])
 877   * Corrected fix for ([CVE-2011-4619])
 878   * Various DTLS fixes.
 879
 880 ### Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]
 881
 882   * Fix for DTLS DoS issue ([CVE-2012-0050])
 883
 884 ### Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]
 885
 886   * Fix for DTLS plaintext recovery attack ([CVE-2011-4108])
 887   * Clear block padding bytes of SSL 3.0 records ([CVE-2011-4576])
 888   * Only allow one SGC handshake restart for SSL/TLS ([CVE-2011-4619])
 889   * Check parameters are not NULL in GOST ENGINE ([CVE-2012-0027])
 890   * Check for malformed RFC3779 data ([CVE-2011-4577])
 891
 892 ### Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]
 893
 894   * Fix for CRL vulnerability issue ([CVE-2011-3207])
 895   * Fix for ECDH crashes ([CVE-2011-3210])
 896   * Protection against EC timing attacks.
 897   * Support ECDH ciphersuites for certificates using SHA2 algorithms.
 898   * Various DTLS fixes.
 899
 900 ### Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]
 901
 902   * Fix for security issue ([CVE-2011-0014])
 903
 904 ### Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]
 905
 906   * Fix for security issue ([CVE-2010-4180])
 907   * Fix for ([CVE-2010-4252])
 908   * Fix mishandling of absent EC point format extension.
 909   * Fix various platform compilation issues.
 910   * Corrected fix for security issue ([CVE-2010-3864]).
 911
 912 ### Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]
 913
 914   * Fix for security issue ([CVE-2010-3864]).
 915   * Fix for ([CVE-2010-2939])
 916   * Fix WIN32 build system for GOST ENGINE.
 917
 918 ### Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]
 919
 920   * Fix for security issue ([CVE-2010-1633]).
 921   * GOST MAC and CFB fixes.
 922
 923 ### Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]
 924
 925   * RFC3280 path validation: sufficient to process PKITS tests.
 926   * Integrated support for PVK files and keyblobs.
 927   * Change default private key format to PKCS#8.
 928   * CMS support: able to process all examples in RFC4134
 929   * Streaming ASN1 encode support for PKCS#7 and CMS.
 930   * Multiple signer and signer add support for PKCS#7 and CMS.
 931   * ASN1 printing support.
 932   * Whirlpool hash algorithm added.
 933   * RFC3161 time stamp support.
 934   * New generalised public key API supporting ENGINE based algorithms.
 935   * New generalised public key API utilities.
 936   * New ENGINE supporting GOST algorithms.
 937   * SSL/TLS GOST ciphersuite support.
 938   * PKCS#7 and CMS GOST support.
 939   * RFC4279 PSK ciphersuite support.
 940   * Supported points format extension for ECC ciphersuites.
 941   * ecdsa-with-SHA224/256/384/512 signature types.
 942   * dsa-with-SHA224 and dsa-with-SHA256 signature types.
 943   * Opaque PRF Input TLS extension support.
 944   * Updated time routines to avoid OS limitations.
 945
 946 OpenSSL 0.9.x
 947 -------------
 948
 949 ### Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]
 950
 951   * CFB cipher definition fixes.
 952   * Fix security issues [CVE-2010-0740] and [CVE-2010-0433].
 953
 954 ### Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]
 955
 956   * Cipher definition fixes.
 957   * Workaround for slow RAND_poll() on some WIN32 versions.
 958   * Remove MD2 from algorithm tables.
 959   * SPKAC handling fixes.
 960   * Support for RFC5746 TLS renegotiation extension.
 961   * Compression memory leak fixed.
 962   * Compression session resumption fixed.
 963   * Ticket and SNI coexistence fixes.
 964   * Many fixes to DTLS handling.
 965
 966 ### Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]
 967
 968   * Temporary work around for [CVE-2009-3555]: disable renegotiation.
 969
 970 ### Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]
 971
 972   * Fix various build issues.
 973   * Fix security issues [CVE-2009-0590], [CVE-2009-0591], [CVE-2009-0789]
 974
 975 ### Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]
 976
 977   * Fix security issue ([CVE-2008-5077])
 978   * Merge FIPS 140-2 branch code.
 979
 980 ### Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]
 981
 982   * CryptoAPI ENGINE support.
 983   * Various precautionary measures.
 984   * Fix for bugs affecting certificate request creation.
 985   * Support for local machine keyset attribute in PKCS#12 files.
 986
 987 ### Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]
 988
 989   * Backport of CMS functionality to 0.9.8.
 990   * Fixes for bugs introduced with 0.9.8f.
 991
 992 ### Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]
 993
 994   * Add gcc 4.2 support.
 995   * Add support for AES and SSE2 assembly language optimization
 996     for VC++ build.
 997   * Support for RFC4507bis and server name extensions if explicitly
 998     selected at compile time.
 999   * DTLS improvements.
1000   * RFC4507bis support.
1001   * TLS Extensions support.
1002
1003 ### Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]
1004
1005   * Various ciphersuite selection fixes.
1006   * RFC3779 support.
1007
1008 ### Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]
1009
1010   * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1011   * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1012   * Changes to ciphersuite selection algorithm
1013
1014 ### Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]
1015
1016   * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1017   * New cipher Camellia
1018
1019 ### Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]
1020
1021   * Cipher string fixes.
1022   * Fixes for VC++ 2005.
1023   * Updated ECC cipher suite support.
1024   * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
1025   * Zlib compression usage fixes.
1026   * Built in dynamic engine compilation support on Win32.
1027   * Fixes auto dynamic engine loading in Win32.
1028
1029 ### Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]
1030
1031   * Fix potential SSL 2.0 rollback ([CVE-2005-2969])
1032   * Extended Windows CE support
1033
1034 ### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]
1035
1036   * Major work on the BIGNUM library for higher efficiency and to
1037     make operations more streamlined and less contradictory.  This
1038     is the result of a major audit of the BIGNUM library.
1039   * Addition of BIGNUM functions for fields GF(2^m) and NIST
1040     curves, to support the Elliptic Crypto functions.
1041   * Major work on Elliptic Crypto; ECDH and ECDSA added, including
1042     the use through EVP, X509 and ENGINE.
1043   * New ASN.1 mini-compiler that's usable through the OpenSSL
1044     configuration file.
1045   * Added support for ASN.1 indefinite length constructed encoding.
1046   * New PKCS#12 'medium level' API to manipulate PKCS#12 files.
1047   * Complete rework of shared library construction and linking
1048     programs with shared or static libraries, through a separate
1049     Makefile.shared.
1050   * Rework of the passing of parameters from one Makefile to another.
1051   * Changed ENGINE framework to load dynamic engine modules
1052     automatically from specifically given directories.
1053   * New structure and ASN.1 functions for CertificatePair.
1054   * Changed the ZLIB compression method to be stateful.
1055   * Changed the key-generation and primality testing "progress"
1056     mechanism to take a structure that contains the ticker
1057     function and an argument.
1058   * New engine module: GMP (performs private key exponentiation).
1059   * New engine module: VIA PadLOck ACE extension in VIA C3
1060     Nehemiah processors.
1061   * Added support for IPv6 addresses in certificate extensions.
1062     See RFC 1884, section 2.2.
1063   * Added support for certificate policy mappings, policy
1064     constraints and name constraints.
1065   * Added support for multi-valued AVAs in the OpenSSL
1066     configuration file.
1067   * Added support for multiple certificates with the same subject
1068     in the 'openssl ca' index file.
1069   * Make it possible to create self-signed certificates using
1070     'openssl ca -selfsign'.
1071   * Make it possible to generate a serial number file with
1072     'openssl ca -create_serial'.
1073   * New binary search functions with extended functionality.
1074   * New BUF functions.
1075   * New STORE structure and library to provide an interface to all
1076     sorts of data repositories.  Supports storage of public and
1077     private keys, certificates, CRLs, numbers and arbitrary blobs.
1078     This library is unfortunately unfinished and unused within
1079     OpenSSL.
1080   * New control functions for the error stack.
1081   * Changed the PKCS#7 library to support one-pass S/MIME
1082     processing.
1083   * Added the possibility to compile without old deprecated
1084     functionality with the OPENSSL_NO_DEPRECATED macro or the
1085     'no-deprecated' argument to the config and Configure scripts.
1086   * Constification of all ASN.1 conversion functions, and other
1087     affected functions.
1088   * Improved platform support for PowerPC.
1089   * New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
1090   * New X509_VERIFY_PARAM structure to support parameterisation
1091   of X.509 path validation.
1092   * Major overhaul of RC4 performance on Intel P4, IA-64 and
1093     AMD64.
1094   * Changed the Configure script to have some algorithms disabled
1095     by default.  Those can be explicitly enabled with the new
1096     argument form 'enable-xxx'.
1097   * Change the default digest in 'openssl' commands from MD5 to
1098     SHA-1.
1099   * Added support for DTLS.
1100   * New BIGNUM blinding.
1101   * Added support for the RSA-PSS encryption scheme
1102   * Added support for the RSA X.931 padding.
1103   * Added support for BSD sockets on NetWare.
1104   * Added support for files larger than 2GB.
1105   * Added initial support for Win64.
1106   * Added alternate pkg-config files.
1107
1108 ### Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]
1109
1110   * FIPS 1.1.1 module linking.
1111   * Various ciphersuite selection fixes.
1112
1113 ### Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]
1114
1115   * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1116   * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1117
1118 ### Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]
1119
1120   * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1121
1122 ### Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]
1123
1124   * Visual C++ 2005 fixes.
1125   * Update Windows build system for FIPS.
1126
1127 ### Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]
1128
1129   * Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
1130
1131 ### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]
1132
1133   * Fix SSL 2.0 Rollback ([CVE-2005-2969])
1134   * Allow use of fixed-length exponent on DSA signing
1135   * Default fixed-window RSA, DSA, DH private-key operations
1136
1137 ### Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]
1138
1139   * More compilation issues fixed.
1140   * Adaptation to more modern Kerberos API.
1141   * Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
1142   * Enhanced x86_64 assembler BIGNUM module.
1143   * More constification.
1144   * Added processing of proxy certificates (RFC 3820).
1145
1146 ### Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]
1147
1148   * Several compilation issues fixed.
1149   * Many memory allocation failure checks added.
1150   * Improved comparison of X509 Name type.
1151   * Mandatory basic checks on certificates.
1152   * Performance improvements.
1153
1154 ### Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]
1155
1156   * Fix race condition in CRL checking code.
1157   * Fixes to PKCS#7 (S/MIME) code.
1158
1159 ### Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]
1160
1161   * Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
1162   * Security: Fix null-pointer assignment in do_change_cipher_spec()
1163   * Allow multiple active certificates with same subject in CA index
1164   * Multiple X509 verification fixes
1165   * Speed up HMAC and other operations
1166
1167 ### Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]
1168
1169   * Security: fix various ASN1 parsing bugs.
1170   * New -ignore_err option to OCSP utility.
1171   * Various interop and bug fixes in S/MIME code.
1172   * SSL/TLS protocol fix for unrequested client certificates.
1173
1174 ### Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]
1175
1176   * Security: counter the Klima-Pokorny-Rosa extension of
1177     Bleichbacher's attack
1178   * Security: make RSA blinding default.
1179   * Configuration: Irix fixes, AIX fixes, better mingw support.
1180   * Support for new platforms: linux-ia64-ecc.
1181   * Build: shared library support fixes.
1182   * ASN.1: treat domainComponent correctly.
1183   * Documentation: fixes and additions.
1184
1185 ### Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]
1186
1187   * Security: Important security related bugfixes.
1188   * Enhanced compatibility with MIT Kerberos.
1189   * Can be built without the ENGINE framework.
1190   * IA32 assembler enhancements.
1191   * Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
1192   * Configuration: the no-err option now works properly.
1193   * SSL/TLS: now handles manual certificate chain building.
1194   * SSL/TLS: certain session ID malfunctions corrected.
1195
1196 ### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]
1197
1198   * New library section OCSP.
1199   * Complete rewrite of ASN1 code.
1200   * CRL checking in verify code and openssl utility.
1201   * Extension copying in 'ca' utility.
1202   * Flexible display options in 'ca' utility.
1203   * Provisional support for international characters with UTF8.
1204   * Support for external crypto devices ('engine') is no longer
1205     a separate distribution.
1206   * New elliptic curve library section.
1207   * New AES (Rijndael) library section.
1208   * Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
1209     Linux x86_64, Linux 64-bit on Sparc v9
1210   * Extended support for some platforms: VxWorks
1211   * Enhanced support for shared libraries.
1212   * Now only builds PIC code when shared library support is requested.
1213   * Support for pkg-config.
1214   * Lots of new manuals.
1215   * Makes symbolic links to or copies of manuals to cover all described
1216     functions.
1217   * Change DES API to clean up the namespace (some applications link also
1218     against libdes providing similar functions having the same name).
1219     Provide macros for backward compatibility (will be removed in the
1220     future).
1221   * Unify handling of cryptographic algorithms (software and engine)
1222     to be available via EVP routines for asymmetric and symmetric ciphers.
1223   * NCONF: new configuration handling routines.
1224   * Change API to use more 'const' modifiers to improve error checking
1225     and help optimizers.
1226   * Finally remove references to RSAref.
1227   * Reworked parts of the BIGNUM code.
1228   * Support for new engines: Broadcom ubsec, Accelerated Encryption
1229     Processing, IBM 4758.
1230   * A few new engines added in the demos area.
1231   * Extended and corrected OID (object identifier) table.
1232   * PRNG: query at more locations for a random device, automatic query for
1233     EGD style random sources at several locations.
1234   * SSL/TLS: allow optional cipher choice according to server's preference.
1235   * SSL/TLS: allow server to explicitly set new session ids.
1236   * SSL/TLS: support Kerberos cipher suites (RFC2712).
1237     Only supports MIT Kerberos for now.
1238   * SSL/TLS: allow more precise control of renegotiations and sessions.
1239   * SSL/TLS: add callback to retrieve SSL/TLS messages.
1240   * SSL/TLS: support AES cipher suites (RFC3268).
1241
1242 ### Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]
1243
1244   * Security: fix various ASN1 parsing bugs.
1245   * SSL/TLS protocol fix for unrequested client certificates.
1246
1247 ### Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]
1248
1249   * Security: counter the Klima-Pokorny-Rosa extension of
1250     Bleichbacher's attack
1251   * Security: make RSA blinding default.
1252   * Build: shared library support fixes.
1253
1254 ### Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]
1255
1256   * Important security related bugfixes.
1257
1258 ### Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]
1259
1260   * New configuration targets for Tandem OSS and A/UX.
1261   * New OIDs for Microsoft attributes.
1262   * Better handling of SSL session caching.
1263   * Better comparison of distinguished names.
1264   * Better handling of shared libraries in a mixed GNU/non-GNU environment.
1265   * Support assembler code with Borland C.
1266   * Fixes for length problems.
1267   * Fixes for uninitialised variables.
1268   * Fixes for memory leaks, some unusual crashes and some race conditions.
1269   * Fixes for smaller building problems.
1270   * Updates of manuals, FAQ and other instructive documents.
1271
1272 ### Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]
1273
1274   * Important building fixes on Unix.
1275
1276 ### Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]
1277
1278   * Various important bugfixes.
1279
1280 ### Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]
1281
1282   * Important security related bugfixes.
1283   * Various SSL/TLS library bugfixes.
1284
1285 ### Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]
1286
1287   * Various SSL/TLS library bugfixes.
1288   * Fix DH parameter generation for 'non-standard' generators.
1289
1290 ### Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]
1291
1292   * Various SSL/TLS library bugfixes.
1293   * BIGNUM library fixes.
1294   * RSA OAEP and random number generation fixes.
1295   * Object identifiers corrected and added.
1296   * Add assembler BN routines for IA64.
1297   * Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
1298     MIPS Linux; shared library support for Irix, HP-UX.
1299   * Add crypto accelerator support for AEP, Baltimore SureWare,
1300     Broadcom and Cryptographic Appliance's keyserver
1301     [in 0.9.6c-engine release].
1302
1303 ### Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]
1304
1305   * Security fix: PRNG improvements.
1306   * Security fix: RSA OAEP check.
1307   * Security fix: Reinsert and fix countermeasure to Bleichbacher's
1308     attack.
1309   * MIPS bug fix in BIGNUM.
1310   * Bug fix in "openssl enc".
1311   * Bug fix in X.509 printing routine.
1312   * Bug fix in DSA verification routine and DSA S/MIME verification.
1313   * Bug fix to make PRNG thread-safe.
1314   * Bug fix in RAND_file_name().
1315   * Bug fix in compatibility mode trust settings.
1316   * Bug fix in blowfish EVP.
1317   * Increase default size for BIO buffering filter.
1318   * Compatibility fixes in some scripts.
1319
1320 ### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]
1321
1322   * Security fix: change behavior of OpenSSL to avoid using
1323     environment variables when running as root.
1324   * Security fix: check the result of RSA-CRT to reduce the
1325     possibility of deducing the private key from an incorrectly
1326     calculated signature.
1327   * Security fix: prevent Bleichenbacher's DSA attack.
1328   * Security fix: Zero the premaster secret after deriving the
1329     master secret in DH ciphersuites.
1330   * Reimplement SSL_peek(), which had various problems.
1331   * Compatibility fix: the function des_encrypt() renamed to
1332     des_encrypt1() to avoid clashes with some Unixen libc.
1333   * Bug fixes for Win32, HP/UX and Irix.
1334   * Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
1335     memory checking routines.
1336   * Bug fixes for RSA operations in threaded environments.
1337   * Bug fixes in misc. openssl applications.
1338   * Remove a few potential memory leaks.
1339   * Add tighter checks of BIGNUM routines.
1340   * Shared library support has been reworked for generality.
1341   * More documentation.
1342   * New function BN_rand_range().
1343   * Add "-rand" option to openssl s_client and s_server.
1344
1345 ### Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]
1346
1347   * Some documentation for BIO and SSL libraries.
1348   * Enhanced chain verification using key identifiers.
1349   * New sign and verify options to 'dgst' application.
1350   * Support for DER and PEM encoded messages in 'smime' application.
1351   * New 'rsautl' application, low-level RSA utility.
1352   * MD4 now included.
1353   * Bugfix for SSL rollback padding check.
1354   * Support for external crypto devices [1].
1355   * Enhanced EVP interface.
1356
1357   [1] The support for external crypto devices is currently a separate
1358       distribution.  See the file README-Engine.md.
1359
1360 ### Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]
1361
1362   * Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
1363   * Shared library support for HPUX and Solaris-gcc
1364   * Support of Linux/IA64
1365   * Assembler support for Mingw32
1366   * New 'rand' application
1367   * New way to check for existence of algorithms from scripts
1368
1369 ### Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]
1370
1371   * S/MIME support in new 'smime' command
1372   * Documentation for the OpenSSL command line application
1373   * Automation of 'req' application
1374   * Fixes to make s_client, s_server work under Windows
1375   * Support for multiple fieldnames in SPKACs
1376   * New SPKAC command line utility and associated library functions
1377   * Options to allow passwords to be obtained from various sources
1378   * New public key PEM format and options to handle it
1379   * Many other fixes and enhancements to command line utilities
1380   * Usable certificate chain verification
1381   * Certificate purpose checking
1382   * Certificate trust settings
1383   * Support of authority information access extension
1384   * Extensions in certificate requests
1385   * Simplified X509 name and attribute routines
1386   * Initial (incomplete) support for international character sets
1387   * New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
1388   * Read only memory BIOs and simplified creation function
1389   * TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
1390     record; allow fragmentation and interleaving of handshake and other
1391     data
1392   * TLS/SSL code now "tolerates" MS SGC
1393   * Work around for Netscape client certificate hang bug
1394   * RSA_NULL option that removes RSA patent code but keeps other
1395     RSA functionality
1396   * Memory leak detection now allows applications to add extra information
1397     via a per-thread stack
1398   * PRNG robustness improved
1399   * EGD support
1400   * BIGNUM library bug fixes
1401   * Faster DSA parameter generation
1402   * Enhanced support for Alpha Linux
1403   * Experimental macOS support
1404
1405 ### Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]
1406
1407   * Transparent support for PKCS#8 format private keys: these are used
1408     by several software packages and are more secure than the standard
1409     form
1410   * PKCS#5 v2.0 implementation
1411   * Password callbacks have a new void * argument for application data
1412   * Avoid various memory leaks
1413   * New pipe-like BIO that allows using the SSL library when actual I/O
1414     must be handled by the application (BIO pair)
1415
1416 ### Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]
1417
1418   * Lots of enhancements and cleanups to the Configuration mechanism
1419   * RSA OEAP related fixes
1420   * Added "openssl ca -revoke" option for revoking a certificate
1421   * Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
1422   * Source tree cleanups: removed lots of obsolete files
1423   * Thawte SXNet, certificate policies and CRL distribution points
1424     extension support
1425   * Preliminary (experimental) S/MIME support
1426   * Support for ASN.1 UTF8String and VisibleString
1427   * Full integration of PKCS#12 code
1428   * Sparc assembler bignum implementation, optimized hash functions
1429   * Option to disable selected ciphers
1430
1431 ### Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]
1432
1433   * Fixed a security hole related to session resumption
1434   * Fixed RSA encryption routines for the p < q case
1435   * "ALL" in cipher lists now means "everything except NULL ciphers"
1436   * Support for Triple-DES CBCM cipher
1437   * Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
1438   * First support for new TLSv1 ciphers
1439   * Added a few new BIOs (syslog BIO, reliable BIO)
1440   * Extended support for DSA certificate/keys.
1441   * Extended support for Certificate Signing Requests (CSR)
1442   * Initial support for X.509v3 extensions
1443   * Extended support for compression inside the SSL record layer
1444   * Overhauled Win32 builds
1445   * Cleanups and fixes to the Big Number (BN) library
1446   * Support for ASN.1 GeneralizedTime
1447   * Splitted ASN.1 SETs from SEQUENCEs
1448   * ASN1 and PEM support for Netscape Certificate Sequences
1449   * Overhauled Perl interface
1450   * Lots of source tree cleanups.
1451   * Lots of memory leak fixes.
1452   * Lots of bug fixes.
1453
1454 ### Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]
1455
1456   * Integration of the popular NO_RSA/NO_DSA patches
1457   * Initial support for compression inside the SSL record layer
1458   * Added BIO proxy and filtering functionality
1459   * Extended Big Number (BN) library
1460   * Added RIPE MD160 message digest
1461   * Added support for RC2/64bit cipher
1462   * Extended ASN.1 parser routines
1463   * Adjustments of the source tree for CVS
1464   * Support for various new platforms
1465
1466 <!-- Links -->
1467 [CVE-2023-0465]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0465
1468 [CVE-2023-0464]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0464
1469 [CVE-2023-0401]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0401
1470 [CVE-2023-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0286
1471 [CVE-2023-0217]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0217
1472 [CVE-2023-0216]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0216
1473 [CVE-2023-0215]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0215
1474 [CVE-2022-4450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4450
1475 [CVE-2022-4304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4304
1476 [CVE-2022-4203]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4203
1477 [CVE-2022-3996]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-3996
1478 [CVE-2022-2274]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-2274
1479 [CVE-2022-2097]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-2097
1480 [CVE-2020-1971]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1971
1481 [CVE-2020-1967]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1967
1482 [CVE-2019-1563]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1563
1483 [CVE-2019-1559]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1559
1484 [CVE-2019-1552]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1552
1485 [CVE-2019-1551]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1551
1486 [CVE-2019-1549]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1549
1487 [CVE-2019-1547]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1547
1488 [CVE-2019-1543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1543
1489 [CVE-2018-5407]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-5407
1490 [CVE-2018-0739]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0739
1491 [CVE-2018-0737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0737
1492 [CVE-2018-0735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0735
1493 [CVE-2018-0734]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0734
1494 [CVE-2018-0733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0733
1495 [CVE-2018-0732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0732
1496 [CVE-2017-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3738
1497 [CVE-2017-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3737
1498 [CVE-2017-3736]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3736
1499 [CVE-2017-3735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3735
1500 [CVE-2017-3733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3733
1501 [CVE-2017-3732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3732
1502 [CVE-2017-3731]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3731
1503 [CVE-2017-3730]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3730
1504 [CVE-2016-7055]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7055
1505 [CVE-2016-7054]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7054
1506 [CVE-2016-7053]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7053
1507 [CVE-2016-7052]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7052
1508 [CVE-2016-6309]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6309
1509 [CVE-2016-6308]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6308
1510 [CVE-2016-6307]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6307
1511 [CVE-2016-6306]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6306
1512 [CVE-2016-6305]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6305
1513 [CVE-2016-6304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6304
1514 [CVE-2016-6303]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6303
1515 [CVE-2016-6302]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6302
1516 [CVE-2016-2183]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2183
1517 [CVE-2016-2182]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2182
1518 [CVE-2016-2181]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2181
1519 [CVE-2016-2180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2180
1520 [CVE-2016-2179]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2179
1521 [CVE-2016-2178]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2178
1522 [CVE-2016-2177]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2177
1523 [CVE-2016-2176]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2176
1524 [CVE-2016-2109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2109
1525 [CVE-2016-2107]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2107
1526 [CVE-2016-2106]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2106
1527 [CVE-2016-2105]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2105
1528 [CVE-2016-0800]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0800
1529 [CVE-2016-0799]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0799
1530 [CVE-2016-0798]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0798
1531 [CVE-2016-0797]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0797
1532 [CVE-2016-0705]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0705
1533 [CVE-2016-0702]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0702
1534 [CVE-2016-0701]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0701
1535 [CVE-2015-3197]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3197
1536 [CVE-2015-3196]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3196
1537 [CVE-2015-3195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3195
1538 [CVE-2015-3194]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3194
1539 [CVE-2015-3193]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3193
1540 [CVE-2015-1793]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1793
1541 [CVE-2015-1792]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1792
1542 [CVE-2015-1791]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1791
1543 [CVE-2015-1790]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1790
1544 [CVE-2015-1789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1789
1545 [CVE-2015-1788]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1788
1546 [CVE-2015-1787]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1787
1547 [CVE-2015-0293]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0293
1548 [CVE-2015-0291]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0291
1549 [CVE-2015-0290]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0290
1550 [CVE-2015-0289]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0289
1551 [CVE-2015-0288]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0288
1552 [CVE-2015-0287]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0287
1553 [CVE-2015-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0286
1554 [CVE-2015-0285]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0285
1555 [CVE-2015-0209]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0209
1556 [CVE-2015-0208]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0208
1557 [CVE-2015-0207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0207
1558 [CVE-2015-0206]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0206
1559 [CVE-2015-0205]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0205
1560 [CVE-2015-0204]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0204
1561 [CVE-2014-8275]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-8275
1562 [CVE-2014-5139]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-5139
1563 [CVE-2014-3572]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3572
1564 [CVE-2014-3571]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3571
1565 [CVE-2014-3570]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3570
1566 [CVE-2014-3569]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3569
1567 [CVE-2014-3568]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3568
1568 [CVE-2014-3567]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3567
1569 [CVE-2014-3566]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3566
1570 [CVE-2014-3513]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3513
1571 [CVE-2014-3512]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3512
1572 [CVE-2014-3511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3511
1573 [CVE-2014-3510]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3510
1574 [CVE-2014-3509]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3509
1575 [CVE-2014-3508]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3508
1576 [CVE-2014-3507]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3507
1577 [CVE-2014-3506]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3506
1578 [CVE-2014-3505]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3505
1579 [CVE-2014-3470]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3470
1580 [CVE-2014-0224]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0224
1581 [CVE-2014-0221]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0221
1582 [CVE-2014-0198]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0198
1583 [CVE-2014-0195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0195
1584 [CVE-2014-0160]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0160
1585 [CVE-2014-0076]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0076
1586 [CVE-2013-6450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6450
1587 [CVE-2013-6449]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6449
1588 [CVE-2013-4353]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-4353
1589 [CVE-2013-0169]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0169
1590 [CVE-2013-0166]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0166
1591 [CVE-2012-2686]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2686
1592 [CVE-2012-2333]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2333
1593 [CVE-2012-2110]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2110
1594 [CVE-2012-0884]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0884
1595 [CVE-2012-0050]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0050
1596 [CVE-2012-0027]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0027
1597 [CVE-2011-4619]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4619
1598 [CVE-2011-4577]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4577
1599 [CVE-2011-4576]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4576
1600 [CVE-2011-4108]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4108
1601 [CVE-2011-3210]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3210
1602 [CVE-2011-3207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3207
1603 [CVE-2011-0014]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-0014
1604 [CVE-2010-5298]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-5298
1605 [CVE-2010-4252]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4252
1606 [CVE-2010-4180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4180
1607 [CVE-2010-3864]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-3864
1608 [CVE-2010-2939]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-2939
1609 [CVE-2010-1633]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-1633
1610 [CVE-2010-0740]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0740
1611 [CVE-2010-0433]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0433
1612 [CVE-2009-3555]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3555
1613 [CVE-2009-0789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0789
1614 [CVE-2009-0591]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0591
1615 [CVE-2009-0590]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0590
1616 [CVE-2008-5077]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-5077
1617 [CVE-2006-4343]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4343
1618 [CVE-2006-4339]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4339
1619 [CVE-2006-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-3737
1620 [CVE-2006-2940]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2940
1621 [CVE-2006-2937]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2937
1622 [CVE-2005-2969]: https://www.openssl.org/news/vulnerabilities.html#CVE-2005-2969