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 client side support for QUIC.
  26   * Add Raw Public Key (RFC7250) support.
  27   * Added support for certificate compression (RFC8879), including
  28     library support for Brotli and Zstandard compression.
  29   * Subject or issuer names in X.509 objects are now displayed as UTF-8 strings
  30     by default.
  31   * TCP Fast Open (RFC7413) support is available on Linux, macOS, and FreeBSD
  32     where enabled and supported.
  33   * Full support for provider-based/pluggable signature algorithms in TLS 1.3
  34     operations as well as X.509 data structure support. With a suitable provider
  35     this fully enables use of post-quantum/quantum-safe cryptography.
  36
  37 OpenSSL 3.1
  38 -----------
  39
  40 ### Major changes between OpenSSL 3.1.1 and OpenSSL 3.1.2 [under development]
  41
  42  * When building with the `enable-fips` option and using the resulting
  43    FIPS provider, TLS 1.2 will, by default, mandate the use of an
  44    extended master secret and the Hash and HMAC DRBGs will not operate
  45    with truncated digests.
  46
  47 ### Major changes between OpenSSL 3.1.0 and OpenSSL 3.1.1 [30 May 2023]
  48
  49   * Mitigate for very slow `OBJ_obj2txt()` performance with gigantic OBJECT
  50     IDENTIFIER sub-identities.  ([CVE-2023-2650])
  51   * Fixed buffer overread in AES-XTS decryption on ARM 64 bit platforms
  52     ([CVE-2023-1255])
  53   * Fixed documentation of X509_VERIFY_PARAM_add0_policy() ([CVE-2023-0466])
  54   * Fixed handling of invalid certificate policies in leaf certificates
  55     ([CVE-2023-0465])
  56   * Limited the number of nodes created in a policy tree ([CVE-2023-0464])
  57
  58 ### Major changes between OpenSSL 3.0 and OpenSSL 3.1.0 [14 Mar 2023]
  59
  60   * SSL 3, TLS 1.0, TLS 1.1, and DTLS 1.0 only work at security level 0.
  61   * Performance enhancements and new platform support including new
  62     assembler code algorithm implementations.
  63   * Deprecated LHASH statistics functions.
  64   * FIPS 140-3 compliance changes.
  65
  66 OpenSSL 3.0
  67 -----------
  68
  69 ### Major changes between OpenSSL 3.0.7 and OpenSSL 3.0.8 [7 Feb 2023]
  70
  71   * Fixed NULL dereference during PKCS7 data verification ([CVE-2023-0401])
  72   * Fixed X.400 address type confusion in X.509 GeneralName ([CVE-2023-0286])
  73   * Fixed NULL dereference validating DSA public key ([CVE-2023-0217])
  74   * Fixed Invalid pointer dereference in d2i_PKCS7 functions ([CVE-2023-0216])
  75   * Fixed Use-after-free following BIO_new_NDEF ([CVE-2023-0215])
  76   * Fixed Double free after calling PEM_read_bio_ex ([CVE-2022-4450])
  77   * Fixed Timing Oracle in RSA Decryption ([CVE-2022-4304])
  78   * Fixed X.509 Name Constraints Read Buffer Overflow ([CVE-2022-4203])
  79   * Fixed X.509 Policy Constraints Double Locking ([CVE-2022-3996])
  80
  81 ### Major changes between OpenSSL 3.0.6 and OpenSSL 3.0.7 [1 Nov 2022]
  82
  83   * Added RIPEMD160 to the default provider.
  84   * Fixed regressions introduced in 3.0.6 version.
  85   * Fixed two buffer overflows in punycode decoding functions.
  86     ([CVE-2022-3786]) and ([CVE-2022-3602])
  87
  88 ### Major changes between OpenSSL 3.0.5 and OpenSSL 3.0.6 [11 Oct 2022]
  89
  90   * Fix for custom ciphers to prevent accidental use of NULL encryption
  91     ([CVE-2022-3358])
  92
  93 ### Major changes between OpenSSL 3.0.4 and OpenSSL 3.0.5 [5 Jul 2022]
  94
  95   * Fixed heap memory corruption with RSA private key operation
  96     ([CVE-2022-2274])
  97   * Fixed AES OCB failure to encrypt some bytes on 32-bit x86 platforms
  98     ([CVE-2022-2097])
  99
 100 ### Major changes between OpenSSL 3.0.3 and OpenSSL 3.0.4 [21 Jun 2022]
 101
 102   * Fixed additional bugs in the c_rehash script which was not properly
 103     sanitising shell metacharacters to prevent command injection
 104     ([CVE-2022-2068])
 105
 106 ### Major changes between OpenSSL 3.0.2 and OpenSSL 3.0.3 [3 May 2022]
 107
 108   * Fixed a bug in the c_rehash script which was not properly sanitising shell
 109     metacharacters to prevent command injection ([CVE-2022-1292])
 110   * Fixed a bug in the function `OCSP_basic_verify` that verifies the signer
 111     certificate on an OCSP response ([CVE-2022-1343])
 112   * Fixed a bug where the RC4-MD5 ciphersuite incorrectly used the
 113     AAD data as the MAC key ([CVE-2022-1434])
 114   * Fix a bug in the OPENSSL_LH_flush() function that breaks reuse of the memory
 115     occuppied by the removed hash table entries ([CVE-2022-1473])
 116
 117 ### Major changes between OpenSSL 3.0.1 and OpenSSL 3.0.2 [15 Mar 2022]
 118
 119   * Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever
 120     for non-prime moduli ([CVE-2022-0778])
 121
 122 ### Major changes between OpenSSL 3.0.0 and OpenSSL 3.0.1 [14 Dec 2021]
 123
 124   * Fixed invalid handling of X509_verify_cert() internal errors in libssl
 125     ([CVE-2021-4044])
 126   * Allow fetching an operation from the provider that owns an unexportable key
 127     as a fallback if that is still allowed by the property query.
 128
 129 ### Major changes between OpenSSL 1.1.1 and OpenSSL 3.0.0 [7 sep 2021]
 130
 131   * Enhanced 'openssl list' with many new options.
 132   * Added migration guide to man7.
 133   * Implemented support for fully "pluggable" TLSv1.3 groups.
 134   * Added support for Kernel TLS (KTLS).
 135   * Changed the license to the Apache License v2.0.
 136   * Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2,
 137     RC4, RC5, and DES to the legacy provider.
 138   * Moved the EVP digests MD2, MD4, MDC2, WHIRLPOOL and RIPEMD-160 to the legacy
 139     provider.
 140   * Added convenience functions for generating asymmetric key pairs.
 141   * Deprecated the `OCSP_REQ_CTX` type and functions.
 142   * Deprecated the `EC_KEY` and `EC_KEY_METHOD` types and functions.
 143   * Deprecated the `RSA` and `RSA_METHOD` types and functions.
 144   * Deprecated the `DSA` and `DSA_METHOD` types and functions.
 145   * Deprecated the `DH` and `DH_METHOD` types and functions.
 146   * Deprecated the `ERR_load_` functions.
 147   * Remove the `RAND_DRBG` API.
 148   * Deprecated the `ENGINE` API.
 149   * Added `OSSL_LIB_CTX`, a libcrypto library context.
 150   * Added various `_ex` functions to the OpenSSL API that support using
 151     a non-default `OSSL_LIB_CTX`.
 152   * Interactive mode is removed from the 'openssl' program.
 153   * The X25519, X448, Ed25519, Ed448, SHAKE128 and SHAKE256 algorithms are
 154     included in the FIPS provider.
 155   * X509 certificates signed using SHA1 are no longer allowed at security
 156     level 1 or higher. The default security level for TLS is 1, so
 157     certificates signed using SHA1 are by default no longer trusted to
 158     authenticate servers or clients.
 159   * enable-crypto-mdebug and enable-crypto-mdebug-backtrace were mostly
 160     disabled; the project uses address sanitize/leak-detect instead.
 161   * Added a Certificate Management Protocol (CMP, RFC 4210) implementation
 162     also covering CRMF (RFC 4211) and HTTP transfer (RFC 6712).
 163     It is part of the crypto lib and adds a 'cmp' app with a demo configuration.
 164     All widely used CMP features are supported for both clients and servers.
 165   * Added a proper HTTP client supporting GET with optional redirection, POST,
 166     arbitrary request and response content types, TLS, persistent connections,
 167     connections via HTTP(s) proxies, connections and exchange via user-defined
 168     BIOs (allowing implicit connections), and timeout checks.
 169   * Added util/check-format.pl for checking adherence to the coding guidelines.
 170   * Added OSSL_ENCODER, a generic encoder API.
 171   * Added OSSL_DECODER, a generic decoder API.
 172   * Added OSSL_PARAM_BLD, an easier to use API to OSSL_PARAM.
 173   * Added error raising macros, ERR_raise() and ERR_raise_data().
 174   * Deprecated ERR_put_error(), ERR_get_error_line(), ERR_get_error_line_data(),
 175     ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
 176     ERR_func_error_string().
 177   * Added OSSL_PROVIDER_available(), to check provider availability.
 178   * Added 'openssl mac' that uses the EVP_MAC API.
 179   * Added 'openssl kdf' that uses the EVP_KDF API.
 180   * Add OPENSSL_info() and 'openssl info' to get built-in data.
 181   * Add support for enabling instrumentation through trace and debug
 182     output.
 183   * Changed our version number scheme and set the next major release to
 184     3.0.0
 185   * Added EVP_MAC, an EVP layer MAC API, and a generic EVP_PKEY to EVP_MAC
 186     bridge.  Supported MACs are: BLAKE2, CMAC, GMAC, HMAC, KMAC, POLY1305
 187     and SIPHASH.
 188   * Removed the heartbeat message in DTLS feature.
 189   * Added EVP_KDF, an EVP layer KDF and PRF API, and a generic EVP_PKEY to
 190     EVP_KDF bridge.  Supported KDFs are: HKDF, KBKDF, KRB5 KDF, PBKDF2,
 191     PKCS12 KDF, SCRYPT, SSH KDF, SSKDF, TLS1 PRF, X9.42 KDF and X9.63 KDF.
 192   * All of the low-level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224,
 193     SHA256, SHA384, SHA512 and Whirlpool digest functions have been
 194     deprecated.
 195   * All of the low-level AES, Blowfish, Camellia, CAST, DES, IDEA, RC2,
 196     RC4, RC5 and SEED cipher functions have been deprecated.
 197   * All of the low-level DH, DSA, ECDH, ECDSA and RSA public key functions
 198     have been deprecated.
 199   * SSL 3, TLS 1.0, TLS 1.1, and DTLS 1.0 only work at security level 0,
 200     except when RSA key exchange without SHA1 is used.
 201   * Added providers, a new pluggability concept that will replace the
 202     ENGINE API and ENGINE implementations.
 203
 204 OpenSSL 1.1.1
 205 -------------
 206
 207 ### Major changes between OpenSSL 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]
 208
 209   * Fixed an SM2 Decryption Buffer Overflow ([CVE-2021-3711])
 210   * Fixed various read buffer overruns processing ASN.1 strings ([CVE-2021-3712])
 211
 212 ### Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]
 213
 214   * Fixed a problem with verifying a certificate chain when using the
 215     X509_V_FLAG_X509_STRICT flag ([CVE-2021-3450])
 216   * Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
 217     crafted renegotiation ClientHello message from a client ([CVE-2021-3449])
 218
 219 ### Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
 220
 221   * Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
 222     function ([CVE-2021-23841])
 223   * Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
 224     padding mode to correctly check for rollback attacks
 225   * Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
 226     EVP_DecryptUpdate functions ([CVE-2021-23840])
 227   * Fixed SRP_Calc_client_key so that it runs in constant time
 228
 229 ### Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]
 230
 231   * Fixed NULL pointer deref in GENERAL_NAME_cmp ([CVE-2020-1971])
 232
 233 ### Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]
 234
 235   * Disallow explicit curve parameters in verifications chains when
 236     X509_V_FLAG_X509_STRICT is used
 237   * Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
 238     contexts
 239   * Oracle Developer Studio will start reporting deprecation warnings
 240
 241 ### Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]
 242
 243   * Fixed segmentation fault in SSL_check_chain() ([CVE-2020-1967])
 244
 245 ### Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
 246
 247   * Revert the unexpected EOF reporting via SSL_ERROR_SSL
 248
 249 ### Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
 250
 251   * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
 252     used in exponentiation with 512-bit moduli ([CVE-2019-1551])
 253
 254 ### Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
 255
 256   * Fixed a fork protection issue ([CVE-2019-1549])
 257   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 258     ([CVE-2019-1563])
 259   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 260     used even when parsing explicit parameters
 261   * Compute ECC cofactors if not provided during EC_GROUP construction
 262     ([CVE-2019-1547])
 263   * Early start up entropy quality from the DEVRANDOM seed source has been
 264     improved for older Linux systems
 265   * Correct the extended master secret constant on EBCDIC systems
 266   * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
 267   * Changed DH_check to accept parameters with order q and 2q subgroups
 268   * Significantly reduce secure memory usage by the randomness pools
 269   * Revert the DEVRANDOM_WAIT feature for Linux systems
 270
 271 ### Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]
 272
 273   * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
 274
 275 ### Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]
 276
 277   * Change the info callback signals for the start and end of a post-handshake
 278     message exchange in TLSv1.3.
 279   * Fix a bug in DTLS over SCTP. This breaks interoperability with older
 280     versions of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.
 281
 282 ### Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
 283
 284   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 285   * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
 286
 287 ### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
 288
 289   * Support for TLSv1.3 added. The TLSv1.3 implementation includes:
 290     * Fully compliant implementation of RFC8446 (TLSv1.3) on by default
 291     * Early data (0-RTT)
 292     * Post-handshake authentication and key update
 293     * Middlebox Compatibility Mode
 294     * TLSv1.3 PSKs
 295     * Support for all five RFC8446 ciphersuites
 296     * RSA-PSS signature algorithms (backported to TLSv1.2)
 297     * Configurable session ticket support
 298     * Stateless server support
 299     * Rewrite of the packet construction code for "safer" packet handling
 300     * Rewrite of the extension handling code
 301     For further important information, see the [TLS1.3 page](
 302     https://wiki.openssl.org/index.php/TLS1.3) in the OpenSSL Wiki.
 303
 304   * Complete rewrite of the OpenSSL random number generator to introduce the
 305     following capabilities
 306       * The default RAND method now utilizes an AES-CTR DRBG according to
 307         NIST standard SP 800-90Ar1.
 308       * Support for multiple DRBG instances with seed chaining.
 309       * There is a public and private DRBG instance.
 310       * The DRBG instances are fork-safe.
 311       * Keep all global DRBG instances on the secure heap if it is enabled.
 312       * The public and private DRBG instance are per thread for lock free
 313       operation
 314   * Support for various new cryptographic algorithms including:
 315       * SHA3
 316       * SHA512/224 and SHA512/256
 317       * EdDSA (both Ed25519 and Ed448) including X509 and TLS support
 318       * X448 (adding to the existing X25519 support in 1.1.0)
 319       * Multi-prime RSA
 320       * SM2
 321       * SM3
 322       * SM4
 323       * SipHash
 324       * ARIA (including TLS support)
 325   * Significant Side-Channel attack security improvements
 326   * Add a new ClientHello callback to provide the ability to adjust the SSL
 327   object at an early stage.
 328   * Add 'Maximum Fragment Length' TLS extension negotiation and support
 329   * A new STORE module, which implements a uniform and URI based reader of
 330    stores that can contain keys, certificates, CRLs and numerous other
 331   objects.
 332   * Move the display of configuration data to configdata.pm.
 333   * Allow GNU style "make variables" to be used with Configure.
 334   * Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
 335   * Rewrite of devcrypto engine
 336
 337 OpenSSL 1.1.0
 338 -------------
 339
 340 ### Major changes between OpenSSL 1.1.0k and OpenSSL 1.1.0l [10 Sep 2019]
 341
 342   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 343     ([CVE-2019-1563])
 344   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 345     used even when parsing explicit parameters
 346   * Compute ECC cofactors if not provided during EC_GROUP construction
 347     ([CVE-2019-1547])
 348   * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
 349
 350 ### Major changes between OpenSSL 1.1.0j and OpenSSL 1.1.0k [28 May 2019]
 351
 352   * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
 353
 354 ### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.0j [20 Nov 2018]
 355
 356   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 357   * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
 358
 359 ### Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [14 Aug 2018]
 360
 361   * Client DoS due to large DH parameter ([CVE-2018-0732])
 362   * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
 363
 364 ### Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [27 Mar 2018]
 365
 366   * Constructed ASN.1 types with a recursive definition could exceed the
 367     stack ([CVE-2018-0739])
 368   * Incorrect CRYPTO_memcmp on HP-UX PA-RISC ([CVE-2018-0733])
 369   * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
 370
 371 ### Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
 372
 373   * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
 374   * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
 375
 376 ### Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
 377
 378   * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
 379
 380 ### Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
 381
 382   * Encrypt-Then-Mac renegotiation crash ([CVE-2017-3733])
 383
 384 ### Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
 385
 386   * Truncated packet could crash via OOB read ([CVE-2017-3731])
 387   * Bad (EC)DHE parameters cause a client crash ([CVE-2017-3730])
 388   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
 389
 390 ### Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
 391
 392   * ChaCha20/Poly1305 heap-buffer-overflow ([CVE-2016-7054])
 393   * CMS Null dereference ([CVE-2016-7053])
 394   * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
 395
 396 ### Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
 397
 398   * Fix Use After Free for large message sizes ([CVE-2016-6309])
 399
 400 ### Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
 401
 402   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 403   * SSL_peek() hang on empty record ([CVE-2016-6305])
 404   * Excessive allocation of memory in tls_get_message_header()
 405     ([CVE-2016-6307])
 406   * Excessive allocation of memory in dtls1_preprocess_fragment()
 407     ([CVE-2016-6308])
 408
 409 ### Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
 410
 411   * Copyright text was shrunk to a boilerplate that points to the license
 412   * "shared" builds are now the default when possible
 413   * Added support for "pipelining"
 414   * Added the AFALG engine
 415   * New threading API implemented
 416   * Support for ChaCha20 and Poly1305 added to libcrypto and libssl
 417   * Support for extended master secret
 418   * CCM ciphersuites
 419   * Reworked test suite, now based on perl, Test::Harness and Test::More
 420   * *Most* libcrypto and libssl public structures were made opaque,
 421     including:
 422     BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
 423     DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
 424     BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
 425     EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
 426     X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
 427     X509_LOOKUP, X509_LOOKUP_METHOD
 428   * libssl internal structures made opaque
 429   * SSLv2 support removed
 430   * Kerberos ciphersuite support removed
 431   * RC4 removed from DEFAULT ciphersuites in libssl
 432   * 40 and 56 bit cipher support removed from libssl
 433   * All public header files moved to include/openssl, no more symlinking
 434   * SSL/TLS state machine, version negotiation and record layer rewritten
 435   * EC revision: now operations use new EC_KEY_METHOD.
 436   * Support for OCB mode added to libcrypto
 437   * Support for asynchronous crypto operations added to libcrypto and libssl
 438   * Deprecated interfaces can now be disabled at build time either
 439     relative to the latest release via the "no-deprecated" Configure
 440     argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
 441   * Application software can be compiled with -DOPENSSL_API_COMPAT=version
 442     to ensure that features deprecated in that version are not exposed.
 443   * Support for RFC6698/RFC7671 DANE TLSA peer authentication
 444   * Change of Configure to use --prefix as the main installation
 445     directory location rather than --openssldir.  The latter becomes
 446     the directory for certs, private key and openssl.cnf exclusively.
 447   * Reworked BIO networking library, with full support for IPv6.
 448   * New "unified" build system
 449   * New security levels
 450   * Support for scrypt algorithm
 451   * Support for X25519
 452   * Extended SSL_CONF support using configuration files
 453   * KDF algorithm support. Implement TLS PRF as a KDF.
 454   * Support for Certificate Transparency
 455   * HKDF support.
 456
 457 OpenSSL 1.0.2
 458 -------------
 459
 460 ### Major changes between OpenSSL 1.0.2s and OpenSSL 1.0.2t [10 Sep 2019]
 461
 462   * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
 463     ([CVE-2019-1563])
 464   * For built-in EC curves, ensure an EC_GROUP built from the curve name is
 465     used even when parsing explicit parameters
 466   * Compute ECC cofactors if not provided during EC_GROUP construction
 467     ([CVE-2019-1547])
 468   * Document issue with installation paths in diverse Windows builds
 469     ([CVE-2019-1552])
 470
 471 ### Major changes between OpenSSL 1.0.2r and OpenSSL 1.0.2s [28 May 2019]
 472
 473   * None
 474
 475 ### Major changes between OpenSSL 1.0.2q and OpenSSL 1.0.2r [26 Feb 2019]
 476
 477   * 0-byte record padding oracle ([CVE-2019-1559])
 478
 479 ### Major changes between OpenSSL 1.0.2p and OpenSSL 1.0.2q [20 Nov 2018]
 480
 481   * Microarchitecture timing vulnerability in ECC scalar multiplication ([CVE-2018-5407])
 482   * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
 483
 484 ### Major changes between OpenSSL 1.0.2o and OpenSSL 1.0.2p [14 Aug 2018]
 485
 486   * Client DoS due to large DH parameter ([CVE-2018-0732])
 487   * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
 488
 489 ### Major changes between OpenSSL 1.0.2n and OpenSSL 1.0.2o [27 Mar 2018]
 490
 491   * Constructed ASN.1 types with a recursive definition could exceed the
 492     stack ([CVE-2018-0739])
 493
 494 ### Major changes between OpenSSL 1.0.2m and OpenSSL 1.0.2n [7 Dec 2017]
 495
 496   * Read/write after SSL object in error state ([CVE-2017-3737])
 497   * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
 498
 499 ### Major changes between OpenSSL 1.0.2l and OpenSSL 1.0.2m [2 Nov 2017]
 500
 501   * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
 502   * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
 503
 504 ### Major changes between OpenSSL 1.0.2k and OpenSSL 1.0.2l [25 May 2017]
 505
 506   * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
 507
 508 ### Major changes between OpenSSL 1.0.2j and OpenSSL 1.0.2k [26 Jan 2017]
 509
 510   * Truncated packet could crash via OOB read ([CVE-2017-3731])
 511   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
 512   * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
 513
 514 ### Major changes between OpenSSL 1.0.2i and OpenSSL 1.0.2j [26 Sep 2016]
 515
 516   * Missing CRL sanity check ([CVE-2016-7052])
 517
 518 ### Major changes between OpenSSL 1.0.2h and OpenSSL 1.0.2i [22 Sep 2016]
 519
 520   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 521   * SWEET32 Mitigation ([CVE-2016-2183])
 522   * OOB write in MDC2_Update() ([CVE-2016-6303])
 523   * Malformed SHA512 ticket DoS ([CVE-2016-6302])
 524   * OOB write in BN_bn2dec() ([CVE-2016-2182])
 525   * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
 526   * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
 527   * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
 528   * DTLS buffered message DoS ([CVE-2016-2179])
 529   * DTLS replay protection DoS ([CVE-2016-2181])
 530   * Certificate message OOB reads ([CVE-2016-6306])
 531
 532 ### Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
 533
 534   * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
 535   * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
 536   * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
 537   * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
 538   * EBCDIC overread ([CVE-2016-2176])
 539   * Modify behavior of ALPN to invoke callback after SNI/servername
 540     callback, such that updates to the SSL_CTX affect ALPN.
 541   * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
 542     the default.
 543   * Only remove the SSLv2 methods with the no-ssl2-method option.
 544
 545 ### Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
 546
 547   * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
 548   * Disable SSLv2 default build, default negotiation and weak ciphers
 549     ([CVE-2016-0800])
 550   * Fix a double-free in DSA code ([CVE-2016-0705])
 551   * Disable SRP fake user seed to address a server memory leak
 552     ([CVE-2016-0798])
 553   * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
 554     ([CVE-2016-0797])
 555   * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
 556   * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
 557
 558 ### Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
 559
 560   * DH small subgroups ([CVE-2016-0701])
 561   * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
 562
 563 ### Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
 564
 565   * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2015-3193])
 566   * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
 567   * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
 568   * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
 569   * In DSA_generate_parameters_ex, if the provided seed is too short,
 570     return an error
 571
 572 ### Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
 573
 574   * Alternate chains certificate forgery ([CVE-2015-1793])
 575   * Race condition handling PSK identify hint ([CVE-2015-3196])
 576
 577 ### Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
 578
 579   * Fix HMAC ABI incompatibility
 580
 581 ### Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
 582
 583   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 584   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 585   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 586   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 587   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 588
 589 ### Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
 590
 591   * OpenSSL 1.0.2 ClientHello sigalgs DoS fix ([CVE-2015-0291])
 592   * Multiblock corrupted pointer fix ([CVE-2015-0290])
 593   * Segmentation fault in DTLSv1_listen fix ([CVE-2015-0207])
 594   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 595   * Segmentation fault for invalid PSS parameters fix ([CVE-2015-0208])
 596   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 597   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 598   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 599   * Empty CKE with client auth and DHE fix ([CVE-2015-1787])
 600   * Handshake with unseeded PRNG fix ([CVE-2015-0285])
 601   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 602   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 603   * Removed the export ciphers from the DEFAULT ciphers
 604
 605 ### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]
 606
 607   * Suite B support for TLS 1.2 and DTLS 1.2
 608   * Support for DTLS 1.2
 609   * TLS automatic EC curve selection.
 610   * API to set TLS supported signature algorithms and curves
 611   * SSL_CONF configuration API.
 612   * TLS Brainpool support.
 613   * ALPN support.
 614   * CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
 615
 616 OpenSSL 1.0.1
 617 -------------
 618
 619 ### Major changes between OpenSSL 1.0.1t and OpenSSL 1.0.1u [22 Sep 2016]
 620
 621   * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
 622   * SWEET32 Mitigation ([CVE-2016-2183])
 623   * OOB write in MDC2_Update() ([CVE-2016-6303])
 624   * Malformed SHA512 ticket DoS ([CVE-2016-6302])
 625   * OOB write in BN_bn2dec() ([CVE-2016-2182])
 626   * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
 627   * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
 628   * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
 629   * DTLS buffered message DoS ([CVE-2016-2179])
 630   * DTLS replay protection DoS ([CVE-2016-2181])
 631   * Certificate message OOB reads ([CVE-2016-6306])
 632
 633 ### Major changes between OpenSSL 1.0.1s and OpenSSL 1.0.1t [3 May 2016]
 634
 635   * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
 636   * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
 637   * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
 638   * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
 639   * EBCDIC overread ([CVE-2016-2176])
 640   * Modify behavior of ALPN to invoke callback after SNI/servername
 641     callback, such that updates to the SSL_CTX affect ALPN.
 642   * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
 643     the default.
 644   * Only remove the SSLv2 methods with the no-ssl2-method option.
 645
 646 ### Major changes between OpenSSL 1.0.1r and OpenSSL 1.0.1s [1 Mar 2016]
 647
 648   * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
 649   * Disable SSLv2 default build, default negotiation and weak ciphers
 650     ([CVE-2016-0800])
 651   * Fix a double-free in DSA code ([CVE-2016-0705])
 652   * Disable SRP fake user seed to address a server memory leak
 653     ([CVE-2016-0798])
 654   * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
 655     ([CVE-2016-0797])
 656   * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
 657   * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
 658
 659 ### Major changes between OpenSSL 1.0.1q and OpenSSL 1.0.1r [28 Jan 2016]
 660
 661   * Protection for DH small subgroup attacks
 662   * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
 663
 664 ### Major changes between OpenSSL 1.0.1p and OpenSSL 1.0.1q [3 Dec 2015]
 665
 666   * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
 667   * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
 668   * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
 669   * In DSA_generate_parameters_ex, if the provided seed is too short,
 670     return an error
 671
 672 ### Major changes between OpenSSL 1.0.1o and OpenSSL 1.0.1p [9 Jul 2015]
 673
 674   * Alternate chains certificate forgery ([CVE-2015-1793])
 675   * Race condition handling PSK identify hint ([CVE-2015-3196])
 676
 677 ### Major changes between OpenSSL 1.0.1n and OpenSSL 1.0.1o [12 Jun 2015]
 678
 679   * Fix HMAC ABI incompatibility
 680
 681 ### Major changes between OpenSSL 1.0.1m and OpenSSL 1.0.1n [11 Jun 2015]
 682
 683   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 684   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 685   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 686   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 687   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 688
 689 ### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.1m [19 Mar 2015]
 690
 691   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 692   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 693   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 694   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 695   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 696   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 697   * Removed the export ciphers from the DEFAULT ciphers
 698
 699 ### Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
 700
 701   * Build fixes for the Windows and OpenVMS platforms
 702
 703 ### Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
 704
 705   * Fix for [CVE-2014-3571]
 706   * Fix for [CVE-2015-0206]
 707   * Fix for [CVE-2014-3569]
 708   * Fix for [CVE-2014-3572]
 709   * Fix for [CVE-2015-0204]
 710   * Fix for [CVE-2015-0205]
 711   * Fix for [CVE-2014-8275]
 712   * Fix for [CVE-2014-3570]
 713
 714 ### Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
 715
 716   * Fix for [CVE-2014-3513]
 717   * Fix for [CVE-2014-3567]
 718   * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
 719   * Fix for [CVE-2014-3568]
 720
 721 ### Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
 722
 723   * Fix for [CVE-2014-3512]
 724   * Fix for [CVE-2014-3511]
 725   * Fix for [CVE-2014-3510]
 726   * Fix for [CVE-2014-3507]
 727   * Fix for [CVE-2014-3506]
 728   * Fix for [CVE-2014-3505]
 729   * Fix for [CVE-2014-3509]
 730   * Fix for [CVE-2014-5139]
 731   * Fix for [CVE-2014-3508]
 732
 733 ### Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
 734
 735   * Fix for [CVE-2014-0224]
 736   * Fix for [CVE-2014-0221]
 737   * Fix for [CVE-2014-0198]
 738   * Fix for [CVE-2014-0195]
 739   * Fix for [CVE-2014-3470]
 740   * Fix for [CVE-2010-5298]
 741
 742 ### Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
 743
 744   * Fix for [CVE-2014-0160]
 745   * Add TLS padding extension workaround for broken servers.
 746   * Fix for [CVE-2014-0076]
 747
 748 ### Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
 749
 750   * Don't include gmt_unix_time in TLS server and client random values
 751   * Fix for TLS record tampering bug ([CVE-2013-4353])
 752   * Fix for TLS version checking bug ([CVE-2013-6449])
 753   * Fix for DTLS retransmission bug ([CVE-2013-6450])
 754
 755 ### Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]
 756
 757   * Corrected fix for ([CVE-2013-0169])
 758
 759 ### Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]
 760
 761   * Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
 762   * Include the fips configuration module.
 763   * Fix OCSP bad key DoS attack ([CVE-2013-0166])
 764   * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
 765   * Fix for TLS AESNI record handling flaw ([CVE-2012-2686])
 766
 767 ### Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]
 768
 769   * Fix TLS/DTLS record length checking bug ([CVE-2012-2333])
 770   * Don't attempt to use non-FIPS composite ciphers in FIPS mode.
 771
 772 ### Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]
 773
 774   * Fix compilation error on non-x86 platforms.
 775   * Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
 776   * Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
 777
 778 ### Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]
 779
 780   * Fix for ASN1 overflow bug ([CVE-2012-2110])
 781   * Workarounds for some servers that hang on long client hellos.
 782   * Fix SEGV in AES code.
 783
 784 ### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]
 785
 786   * TLS/DTLS heartbeat support.
 787   * SCTP support.
 788   * RFC 5705 TLS key material exporter.
 789   * RFC 5764 DTLS-SRTP negotiation.
 790   * Next Protocol Negotiation.
 791   * PSS signatures in certificates, requests and CRLs.
 792   * Support for password based recipient info for CMS.
 793   * Support TLS v1.2 and TLS v1.1.
 794   * Preliminary FIPS capability for unvalidated 2.0 FIPS module.
 795   * SRP support.
 796
 797 OpenSSL 1.0.0
 798 -------------
 799
 800 ### Major changes between OpenSSL 1.0.0s and OpenSSL 1.0.0t [3 Dec 2015]
 801
 802   * X509_ATTRIBUTE memory leak (([CVE-2015-3195]))
 803   * Race condition handling PSK identify hint ([CVE-2015-3196])
 804
 805 ### Major changes between OpenSSL 1.0.0r and OpenSSL 1.0.0s [11 Jun 2015]
 806
 807   * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
 808   * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
 809   * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
 810   * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
 811   * Race condition handling NewSessionTicket ([CVE-2015-1791])
 812
 813 ### Major changes between OpenSSL 1.0.0q and OpenSSL 1.0.0r [19 Mar 2015]
 814
 815   * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
 816   * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
 817   * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
 818   * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
 819   * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
 820   * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
 821   * Removed the export ciphers from the DEFAULT ciphers
 822
 823 ### Major changes between OpenSSL 1.0.0p and OpenSSL 1.0.0q [15 Jan 2015]
 824
 825   * Build fixes for the Windows and OpenVMS platforms
 826
 827 ### Major changes between OpenSSL 1.0.0o and OpenSSL 1.0.0p [8 Jan 2015]
 828
 829   * Fix for [CVE-2014-3571]
 830   * Fix for [CVE-2015-0206]
 831   * Fix for [CVE-2014-3569]
 832   * Fix for [CVE-2014-3572]
 833   * Fix for [CVE-2015-0204]
 834   * Fix for [CVE-2015-0205]
 835   * Fix for [CVE-2014-8275]
 836   * Fix for [CVE-2014-3570]
 837
 838 ### Major changes between OpenSSL 1.0.0n and OpenSSL 1.0.0o [15 Oct 2014]
 839
 840   * Fix for [CVE-2014-3513]
 841   * Fix for [CVE-2014-3567]
 842   * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
 843   * Fix for [CVE-2014-3568]
 844
 845 ### Major changes between OpenSSL 1.0.0m and OpenSSL 1.0.0n [6 Aug 2014]
 846
 847   * Fix for [CVE-2014-3510]
 848   * Fix for [CVE-2014-3507]
 849   * Fix for [CVE-2014-3506]
 850   * Fix for [CVE-2014-3505]
 851   * Fix for [CVE-2014-3509]
 852   * Fix for [CVE-2014-3508]
 853
 854   Known issues in OpenSSL 1.0.0m:
 855
 856   * EAP-FAST and other applications using tls_session_secret_cb
 857     won't resume sessions. Fixed in 1.0.0n-dev
 858   * Compilation failure of s3_pkt.c on some platforms due to missing
 859     `<limits.h>` include. Fixed in 1.0.0n-dev
 860
 861 ### Major changes between OpenSSL 1.0.0l and OpenSSL 1.0.0m [5 Jun 2014]
 862
 863   * Fix for [CVE-2014-0224]
 864   * Fix for [CVE-2014-0221]
 865   * Fix for [CVE-2014-0198]
 866   * Fix for [CVE-2014-0195]
 867   * Fix for [CVE-2014-3470]
 868   * Fix for [CVE-2014-0076]
 869   * Fix for [CVE-2010-5298]
 870
 871 ### Major changes between OpenSSL 1.0.0k and OpenSSL 1.0.0l [6 Jan 2014]
 872
 873   * Fix for DTLS retransmission bug ([CVE-2013-6450])
 874
 875 ### Major changes between OpenSSL 1.0.0j and OpenSSL 1.0.0k [5 Feb 2013]
 876
 877   * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
 878   * Fix OCSP bad key DoS attack ([CVE-2013-0166])
 879
 880 ### Major changes between OpenSSL 1.0.0i and OpenSSL 1.0.0j [10 May 2012]
 881
 882   * Fix DTLS record length checking bug ([CVE-2012-2333])
 883
 884 ### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.0i [19 Apr 2012]
 885
 886   * Fix for ASN1 overflow bug ([CVE-2012-2110])
 887
 888 ### Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]
 889
 890   * Fix for CMS/PKCS#7 MMA ([CVE-2012-0884])
 891   * Corrected fix for ([CVE-2011-4619])
 892   * Various DTLS fixes.
 893
 894 ### Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]
 895
 896   * Fix for DTLS DoS issue ([CVE-2012-0050])
 897
 898 ### Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]
 899
 900   * Fix for DTLS plaintext recovery attack ([CVE-2011-4108])
 901   * Clear block padding bytes of SSL 3.0 records ([CVE-2011-4576])
 902   * Only allow one SGC handshake restart for SSL/TLS ([CVE-2011-4619])
 903   * Check parameters are not NULL in GOST ENGINE ([CVE-2012-0027])
 904   * Check for malformed RFC3779 data ([CVE-2011-4577])
 905
 906 ### Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]
 907
 908   * Fix for CRL vulnerability issue ([CVE-2011-3207])
 909   * Fix for ECDH crashes ([CVE-2011-3210])
 910   * Protection against EC timing attacks.
 911   * Support ECDH ciphersuites for certificates using SHA2 algorithms.
 912   * Various DTLS fixes.
 913
 914 ### Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]
 915
 916   * Fix for security issue ([CVE-2011-0014])
 917
 918 ### Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]
 919
 920   * Fix for security issue ([CVE-2010-4180])
 921   * Fix for ([CVE-2010-4252])
 922   * Fix mishandling of absent EC point format extension.
 923   * Fix various platform compilation issues.
 924   * Corrected fix for security issue ([CVE-2010-3864]).
 925
 926 ### Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]
 927
 928   * Fix for security issue ([CVE-2010-3864]).
 929   * Fix for ([CVE-2010-2939])
 930   * Fix WIN32 build system for GOST ENGINE.
 931
 932 ### Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]
 933
 934   * Fix for security issue ([CVE-2010-1633]).
 935   * GOST MAC and CFB fixes.
 936
 937 ### Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]
 938
 939   * RFC3280 path validation: sufficient to process PKITS tests.
 940   * Integrated support for PVK files and keyblobs.
 941   * Change default private key format to PKCS#8.
 942   * CMS support: able to process all examples in RFC4134
 943   * Streaming ASN1 encode support for PKCS#7 and CMS.
 944   * Multiple signer and signer add support for PKCS#7 and CMS.
 945   * ASN1 printing support.
 946   * Whirlpool hash algorithm added.
 947   * RFC3161 time stamp support.
 948   * New generalised public key API supporting ENGINE based algorithms.
 949   * New generalised public key API utilities.
 950   * New ENGINE supporting GOST algorithms.
 951   * SSL/TLS GOST ciphersuite support.
 952   * PKCS#7 and CMS GOST support.
 953   * RFC4279 PSK ciphersuite support.
 954   * Supported points format extension for ECC ciphersuites.
 955   * ecdsa-with-SHA224/256/384/512 signature types.
 956   * dsa-with-SHA224 and dsa-with-SHA256 signature types.
 957   * Opaque PRF Input TLS extension support.
 958   * Updated time routines to avoid OS limitations.
 959
 960 OpenSSL 0.9.x
 961 -------------
 962
 963 ### Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]
 964
 965   * CFB cipher definition fixes.
 966   * Fix security issues [CVE-2010-0740] and [CVE-2010-0433].
 967
 968 ### Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]
 969
 970   * Cipher definition fixes.
 971   * Workaround for slow RAND_poll() on some WIN32 versions.
 972   * Remove MD2 from algorithm tables.
 973   * SPKAC handling fixes.
 974   * Support for RFC5746 TLS renegotiation extension.
 975   * Compression memory leak fixed.
 976   * Compression session resumption fixed.
 977   * Ticket and SNI coexistence fixes.
 978   * Many fixes to DTLS handling.
 979
 980 ### Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]
 981
 982   * Temporary work around for [CVE-2009-3555]: disable renegotiation.
 983
 984 ### Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]
 985
 986   * Fix various build issues.
 987   * Fix security issues [CVE-2009-0590], [CVE-2009-0591], [CVE-2009-0789]
 988
 989 ### Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]
 990
 991   * Fix security issue ([CVE-2008-5077])
 992   * Merge FIPS 140-2 branch code.
 993
 994 ### Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]
 995
 996   * CryptoAPI ENGINE support.
 997   * Various precautionary measures.
 998   * Fix for bugs affecting certificate request creation.
 999   * Support for local machine keyset attribute in PKCS#12 files.
1000
1001 ### Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]
1002
1003   * Backport of CMS functionality to 0.9.8.
1004   * Fixes for bugs introduced with 0.9.8f.
1005
1006 ### Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]
1007
1008   * Add gcc 4.2 support.
1009   * Add support for AES and SSE2 assembly language optimization
1010     for VC++ build.
1011   * Support for RFC4507bis and server name extensions if explicitly
1012     selected at compile time.
1013   * DTLS improvements.
1014   * RFC4507bis support.
1015   * TLS Extensions support.
1016
1017 ### Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]
1018
1019   * Various ciphersuite selection fixes.
1020   * RFC3779 support.
1021
1022 ### Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]
1023
1024   * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1025   * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1026   * Changes to ciphersuite selection algorithm
1027
1028 ### Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]
1029
1030   * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1031   * New cipher Camellia
1032
1033 ### Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]
1034
1035   * Cipher string fixes.
1036   * Fixes for VC++ 2005.
1037   * Updated ECC cipher suite support.
1038   * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
1039   * Zlib compression usage fixes.
1040   * Built in dynamic engine compilation support on Win32.
1041   * Fixes auto dynamic engine loading in Win32.
1042
1043 ### Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]
1044
1045   * Fix potential SSL 2.0 rollback ([CVE-2005-2969])
1046   * Extended Windows CE support
1047
1048 ### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]
1049
1050   * Major work on the BIGNUM library for higher efficiency and to
1051     make operations more streamlined and less contradictory.  This
1052     is the result of a major audit of the BIGNUM library.
1053   * Addition of BIGNUM functions for fields GF(2^m) and NIST
1054     curves, to support the Elliptic Crypto functions.
1055   * Major work on Elliptic Crypto; ECDH and ECDSA added, including
1056     the use through EVP, X509 and ENGINE.
1057   * New ASN.1 mini-compiler that's usable through the OpenSSL
1058     configuration file.
1059   * Added support for ASN.1 indefinite length constructed encoding.
1060   * New PKCS#12 'medium level' API to manipulate PKCS#12 files.
1061   * Complete rework of shared library construction and linking
1062     programs with shared or static libraries, through a separate
1063     Makefile.shared.
1064   * Rework of the passing of parameters from one Makefile to another.
1065   * Changed ENGINE framework to load dynamic engine modules
1066     automatically from specifically given directories.
1067   * New structure and ASN.1 functions for CertificatePair.
1068   * Changed the ZLIB compression method to be stateful.
1069   * Changed the key-generation and primality testing "progress"
1070     mechanism to take a structure that contains the ticker
1071     function and an argument.
1072   * New engine module: GMP (performs private key exponentiation).
1073   * New engine module: VIA PadLOck ACE extension in VIA C3
1074     Nehemiah processors.
1075   * Added support for IPv6 addresses in certificate extensions.
1076     See RFC 1884, section 2.2.
1077   * Added support for certificate policy mappings, policy
1078     constraints and name constraints.
1079   * Added support for multi-valued AVAs in the OpenSSL
1080     configuration file.
1081   * Added support for multiple certificates with the same subject
1082     in the 'openssl ca' index file.
1083   * Make it possible to create self-signed certificates using
1084     'openssl ca -selfsign'.
1085   * Make it possible to generate a serial number file with
1086     'openssl ca -create_serial'.
1087   * New binary search functions with extended functionality.
1088   * New BUF functions.
1089   * New STORE structure and library to provide an interface to all
1090     sorts of data repositories.  Supports storage of public and
1091     private keys, certificates, CRLs, numbers and arbitrary blobs.
1092     This library is unfortunately unfinished and unused within
1093     OpenSSL.
1094   * New control functions for the error stack.
1095   * Changed the PKCS#7 library to support one-pass S/MIME
1096     processing.
1097   * Added the possibility to compile without old deprecated
1098     functionality with the OPENSSL_NO_DEPRECATED macro or the
1099     'no-deprecated' argument to the config and Configure scripts.
1100   * Constification of all ASN.1 conversion functions, and other
1101     affected functions.
1102   * Improved platform support for PowerPC.
1103   * New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
1104   * New X509_VERIFY_PARAM structure to support parameterisation
1105   of X.509 path validation.
1106   * Major overhaul of RC4 performance on Intel P4, IA-64 and
1107     AMD64.
1108   * Changed the Configure script to have some algorithms disabled
1109     by default.  Those can be explicitly enabled with the new
1110     argument form 'enable-xxx'.
1111   * Change the default digest in 'openssl' commands from MD5 to
1112     SHA-1.
1113   * Added support for DTLS.
1114   * New BIGNUM blinding.
1115   * Added support for the RSA-PSS encryption scheme
1116   * Added support for the RSA X.931 padding.
1117   * Added support for BSD sockets on NetWare.
1118   * Added support for files larger than 2GB.
1119   * Added initial support for Win64.
1120   * Added alternate pkg-config files.
1121
1122 ### Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]
1123
1124   * FIPS 1.1.1 module linking.
1125   * Various ciphersuite selection fixes.
1126
1127 ### Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]
1128
1129   * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1130   * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1131
1132 ### Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]
1133
1134   * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1135
1136 ### Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]
1137
1138   * Visual C++ 2005 fixes.
1139   * Update Windows build system for FIPS.
1140
1141 ### Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]
1142
1143   * Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
1144
1145 ### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]
1146
1147   * Fix SSL 2.0 Rollback ([CVE-2005-2969])
1148   * Allow use of fixed-length exponent on DSA signing
1149   * Default fixed-window RSA, DSA, DH private-key operations
1150
1151 ### Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]
1152
1153   * More compilation issues fixed.
1154   * Adaptation to more modern Kerberos API.
1155   * Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
1156   * Enhanced x86_64 assembler BIGNUM module.
1157   * More constification.
1158   * Added processing of proxy certificates (RFC 3820).
1159
1160 ### Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]
1161
1162   * Several compilation issues fixed.
1163   * Many memory allocation failure checks added.
1164   * Improved comparison of X509 Name type.
1165   * Mandatory basic checks on certificates.
1166   * Performance improvements.
1167
1168 ### Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]
1169
1170   * Fix race condition in CRL checking code.
1171   * Fixes to PKCS#7 (S/MIME) code.
1172
1173 ### Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]
1174
1175   * Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
1176   * Security: Fix null-pointer assignment in do_change_cipher_spec()
1177   * Allow multiple active certificates with same subject in CA index
1178   * Multiple X509 verification fixes
1179   * Speed up HMAC and other operations
1180
1181 ### Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]
1182
1183   * Security: fix various ASN1 parsing bugs.
1184   * New -ignore_err option to OCSP utility.
1185   * Various interop and bug fixes in S/MIME code.
1186   * SSL/TLS protocol fix for unrequested client certificates.
1187
1188 ### Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]
1189
1190   * Security: counter the Klima-Pokorny-Rosa extension of
1191     Bleichbacher's attack
1192   * Security: make RSA blinding default.
1193   * Configuration: Irix fixes, AIX fixes, better mingw support.
1194   * Support for new platforms: linux-ia64-ecc.
1195   * Build: shared library support fixes.
1196   * ASN.1: treat domainComponent correctly.
1197   * Documentation: fixes and additions.
1198
1199 ### Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]
1200
1201   * Security: Important security related bugfixes.
1202   * Enhanced compatibility with MIT Kerberos.
1203   * Can be built without the ENGINE framework.
1204   * IA32 assembler enhancements.
1205   * Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
1206   * Configuration: the no-err option now works properly.
1207   * SSL/TLS: now handles manual certificate chain building.
1208   * SSL/TLS: certain session ID malfunctions corrected.
1209
1210 ### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]
1211
1212   * New library section OCSP.
1213   * Complete rewrite of ASN1 code.
1214   * CRL checking in verify code and openssl utility.
1215   * Extension copying in 'ca' utility.
1216   * Flexible display options in 'ca' utility.
1217   * Provisional support for international characters with UTF8.
1218   * Support for external crypto devices ('engine') is no longer
1219     a separate distribution.
1220   * New elliptic curve library section.
1221   * New AES (Rijndael) library section.
1222   * Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
1223     Linux x86_64, Linux 64-bit on Sparc v9
1224   * Extended support for some platforms: VxWorks
1225   * Enhanced support for shared libraries.
1226   * Now only builds PIC code when shared library support is requested.
1227   * Support for pkg-config.
1228   * Lots of new manuals.
1229   * Makes symbolic links to or copies of manuals to cover all described
1230     functions.
1231   * Change DES API to clean up the namespace (some applications link also
1232     against libdes providing similar functions having the same name).
1233     Provide macros for backward compatibility (will be removed in the
1234     future).
1235   * Unify handling of cryptographic algorithms (software and engine)
1236     to be available via EVP routines for asymmetric and symmetric ciphers.
1237   * NCONF: new configuration handling routines.
1238   * Change API to use more 'const' modifiers to improve error checking
1239     and help optimizers.
1240   * Finally remove references to RSAref.
1241   * Reworked parts of the BIGNUM code.
1242   * Support for new engines: Broadcom ubsec, Accelerated Encryption
1243     Processing, IBM 4758.
1244   * A few new engines added in the demos area.
1245   * Extended and corrected OID (object identifier) table.
1246   * PRNG: query at more locations for a random device, automatic query for
1247     EGD style random sources at several locations.
1248   * SSL/TLS: allow optional cipher choice according to server's preference.
1249   * SSL/TLS: allow server to explicitly set new session ids.
1250   * SSL/TLS: support Kerberos cipher suites (RFC2712).
1251     Only supports MIT Kerberos for now.
1252   * SSL/TLS: allow more precise control of renegotiations and sessions.
1253   * SSL/TLS: add callback to retrieve SSL/TLS messages.
1254   * SSL/TLS: support AES cipher suites (RFC3268).
1255
1256 ### Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]
1257
1258   * Security: fix various ASN1 parsing bugs.
1259   * SSL/TLS protocol fix for unrequested client certificates.
1260
1261 ### Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]
1262
1263   * Security: counter the Klima-Pokorny-Rosa extension of
1264     Bleichbacher's attack
1265   * Security: make RSA blinding default.
1266   * Build: shared library support fixes.
1267
1268 ### Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]
1269
1270   * Important security related bugfixes.
1271
1272 ### Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]
1273
1274   * New configuration targets for Tandem OSS and A/UX.
1275   * New OIDs for Microsoft attributes.
1276   * Better handling of SSL session caching.
1277   * Better comparison of distinguished names.
1278   * Better handling of shared libraries in a mixed GNU/non-GNU environment.
1279   * Support assembler code with Borland C.
1280   * Fixes for length problems.
1281   * Fixes for uninitialised variables.
1282   * Fixes for memory leaks, some unusual crashes and some race conditions.
1283   * Fixes for smaller building problems.
1284   * Updates of manuals, FAQ and other instructive documents.
1285
1286 ### Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]
1287
1288   * Important building fixes on Unix.
1289
1290 ### Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]
1291
1292   * Various important bugfixes.
1293
1294 ### Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]
1295
1296   * Important security related bugfixes.
1297   * Various SSL/TLS library bugfixes.
1298
1299 ### Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]
1300
1301   * Various SSL/TLS library bugfixes.
1302   * Fix DH parameter generation for 'non-standard' generators.
1303
1304 ### Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]
1305
1306   * Various SSL/TLS library bugfixes.
1307   * BIGNUM library fixes.
1308   * RSA OAEP and random number generation fixes.
1309   * Object identifiers corrected and added.
1310   * Add assembler BN routines for IA64.
1311   * Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
1312     MIPS Linux; shared library support for Irix, HP-UX.
1313   * Add crypto accelerator support for AEP, Baltimore SureWare,
1314     Broadcom and Cryptographic Appliance's keyserver
1315     [in 0.9.6c-engine release].
1316
1317 ### Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]
1318
1319   * Security fix: PRNG improvements.
1320   * Security fix: RSA OAEP check.
1321   * Security fix: Reinsert and fix countermeasure to Bleichbacher's
1322     attack.
1323   * MIPS bug fix in BIGNUM.
1324   * Bug fix in "openssl enc".
1325   * Bug fix in X.509 printing routine.
1326   * Bug fix in DSA verification routine and DSA S/MIME verification.
1327   * Bug fix to make PRNG thread-safe.
1328   * Bug fix in RAND_file_name().
1329   * Bug fix in compatibility mode trust settings.
1330   * Bug fix in blowfish EVP.
1331   * Increase default size for BIO buffering filter.
1332   * Compatibility fixes in some scripts.
1333
1334 ### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]
1335
1336   * Security fix: change behavior of OpenSSL to avoid using
1337     environment variables when running as root.
1338   * Security fix: check the result of RSA-CRT to reduce the
1339     possibility of deducing the private key from an incorrectly
1340     calculated signature.
1341   * Security fix: prevent Bleichenbacher's DSA attack.
1342   * Security fix: Zero the premaster secret after deriving the
1343     master secret in DH ciphersuites.
1344   * Reimplement SSL_peek(), which had various problems.
1345   * Compatibility fix: the function des_encrypt() renamed to
1346     des_encrypt1() to avoid clashes with some Unixen libc.
1347   * Bug fixes for Win32, HP/UX and Irix.
1348   * Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
1349     memory checking routines.
1350   * Bug fixes for RSA operations in threaded environments.
1351   * Bug fixes in misc. openssl applications.
1352   * Remove a few potential memory leaks.
1353   * Add tighter checks of BIGNUM routines.
1354   * Shared library support has been reworked for generality.
1355   * More documentation.
1356   * New function BN_rand_range().
1357   * Add "-rand" option to openssl s_client and s_server.
1358
1359 ### Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]
1360
1361   * Some documentation for BIO and SSL libraries.
1362   * Enhanced chain verification using key identifiers.
1363   * New sign and verify options to 'dgst' application.
1364   * Support for DER and PEM encoded messages in 'smime' application.
1365   * New 'rsautl' application, low-level RSA utility.
1366   * MD4 now included.
1367   * Bugfix for SSL rollback padding check.
1368   * Support for external crypto devices [1].
1369   * Enhanced EVP interface.
1370
1371   [1] The support for external crypto devices is currently a separate
1372       distribution.  See the file README-Engine.md.
1373
1374 ### Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]
1375
1376   * Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
1377   * Shared library support for HPUX and Solaris-gcc
1378   * Support of Linux/IA64
1379   * Assembler support for Mingw32
1380   * New 'rand' application
1381   * New way to check for existence of algorithms from scripts
1382
1383 ### Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]
1384
1385   * S/MIME support in new 'smime' command
1386   * Documentation for the OpenSSL command line application
1387   * Automation of 'req' application
1388   * Fixes to make s_client, s_server work under Windows
1389   * Support for multiple fieldnames in SPKACs
1390   * New SPKAC command line utility and associated library functions
1391   * Options to allow passwords to be obtained from various sources
1392   * New public key PEM format and options to handle it
1393   * Many other fixes and enhancements to command line utilities
1394   * Usable certificate chain verification
1395   * Certificate purpose checking
1396   * Certificate trust settings
1397   * Support of authority information access extension
1398   * Extensions in certificate requests
1399   * Simplified X509 name and attribute routines
1400   * Initial (incomplete) support for international character sets
1401   * New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
1402   * Read only memory BIOs and simplified creation function
1403   * TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
1404     record; allow fragmentation and interleaving of handshake and other
1405     data
1406   * TLS/SSL code now "tolerates" MS SGC
1407   * Work around for Netscape client certificate hang bug
1408   * RSA_NULL option that removes RSA patent code but keeps other
1409     RSA functionality
1410   * Memory leak detection now allows applications to add extra information
1411     via a per-thread stack
1412   * PRNG robustness improved
1413   * EGD support
1414   * BIGNUM library bug fixes
1415   * Faster DSA parameter generation
1416   * Enhanced support for Alpha Linux
1417   * Experimental macOS support
1418
1419 ### Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]
1420
1421   * Transparent support for PKCS#8 format private keys: these are used
1422     by several software packages and are more secure than the standard
1423     form
1424   * PKCS#5 v2.0 implementation
1425   * Password callbacks have a new void * argument for application data
1426   * Avoid various memory leaks
1427   * New pipe-like BIO that allows using the SSL library when actual I/O
1428     must be handled by the application (BIO pair)
1429
1430 ### Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]
1431
1432   * Lots of enhancements and cleanups to the Configuration mechanism
1433   * RSA OEAP related fixes
1434   * Added "openssl ca -revoke" option for revoking a certificate
1435   * Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
1436   * Source tree cleanups: removed lots of obsolete files
1437   * Thawte SXNet, certificate policies and CRL distribution points
1438     extension support
1439   * Preliminary (experimental) S/MIME support
1440   * Support for ASN.1 UTF8String and VisibleString
1441   * Full integration of PKCS#12 code
1442   * Sparc assembler bignum implementation, optimized hash functions
1443   * Option to disable selected ciphers
1444
1445 ### Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]
1446
1447   * Fixed a security hole related to session resumption
1448   * Fixed RSA encryption routines for the p < q case
1449   * "ALL" in cipher lists now means "everything except NULL ciphers"
1450   * Support for Triple-DES CBCM cipher
1451   * Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
1452   * First support for new TLSv1 ciphers
1453   * Added a few new BIOs (syslog BIO, reliable BIO)
1454   * Extended support for DSA certificate/keys.
1455   * Extended support for Certificate Signing Requests (CSR)
1456   * Initial support for X.509v3 extensions
1457   * Extended support for compression inside the SSL record layer
1458   * Overhauled Win32 builds
1459   * Cleanups and fixes to the Big Number (BN) library
1460   * Support for ASN.1 GeneralizedTime
1461   * Split ASN.1 SETs from SEQUENCEs
1462   * ASN1 and PEM support for Netscape Certificate Sequences
1463   * Overhauled Perl interface
1464   * Lots of source tree cleanups.
1465   * Lots of memory leak fixes.
1466   * Lots of bug fixes.
1467
1468 ### Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]
1469
1470   * Integration of the popular NO_RSA/NO_DSA patches
1471   * Initial support for compression inside the SSL record layer
1472   * Added BIO proxy and filtering functionality
1473   * Extended Big Number (BN) library
1474   * Added RIPE MD160 message digest
1475   * Added support for RC2/64bit cipher
1476   * Extended ASN.1 parser routines
1477   * Adjustments of the source tree for CVS
1478   * Support for various new platforms
1479
1480 <!-- Links -->
1481
1482 [CVE-2023-2650]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-2650
1483 [CVE-2023-1255]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-1255
1484 [CVE-2023-0466]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0466
1485 [CVE-2023-0465]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0465
1486 [CVE-2023-0464]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0464
1487 [CVE-2023-0401]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0401
1488 [CVE-2023-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0286
1489 [CVE-2023-0217]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0217
1490 [CVE-2023-0216]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0216
1491 [CVE-2023-0215]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0215
1492 [CVE-2022-4450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4450
1493 [CVE-2022-4304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4304
1494 [CVE-2022-4203]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-4203
1495 [CVE-2022-3996]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-3996
1496 [CVE-2022-2274]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-2274
1497 [CVE-2022-2097]: https://www.openssl.org/news/vulnerabilities.html#CVE-2022-2097
1498 [CVE-2020-1971]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1971
1499 [CVE-2020-1967]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1967
1500 [CVE-2019-1563]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1563
1501 [CVE-2019-1559]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1559
1502 [CVE-2019-1552]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1552
1503 [CVE-2019-1551]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1551
1504 [CVE-2019-1549]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1549
1505 [CVE-2019-1547]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1547
1506 [CVE-2019-1543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1543
1507 [CVE-2018-5407]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-5407
1508 [CVE-2018-0739]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0739
1509 [CVE-2018-0737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0737
1510 [CVE-2018-0735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0735
1511 [CVE-2018-0734]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0734
1512 [CVE-2018-0733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0733
1513 [CVE-2018-0732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0732
1514 [CVE-2017-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3738
1515 [CVE-2017-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3737
1516 [CVE-2017-3736]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3736
1517 [CVE-2017-3735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3735
1518 [CVE-2017-3733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3733
1519 [CVE-2017-3732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3732
1520 [CVE-2017-3731]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3731
1521 [CVE-2017-3730]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3730
1522 [CVE-2016-7055]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7055
1523 [CVE-2016-7054]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7054
1524 [CVE-2016-7053]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7053
1525 [CVE-2016-7052]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7052
1526 [CVE-2016-6309]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6309
1527 [CVE-2016-6308]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6308
1528 [CVE-2016-6307]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6307
1529 [CVE-2016-6306]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6306
1530 [CVE-2016-6305]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6305
1531 [CVE-2016-6304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6304
1532 [CVE-2016-6303]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6303
1533 [CVE-2016-6302]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6302
1534 [CVE-2016-2183]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2183
1535 [CVE-2016-2182]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2182
1536 [CVE-2016-2181]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2181
1537 [CVE-2016-2180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2180
1538 [CVE-2016-2179]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2179
1539 [CVE-2016-2178]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2178
1540 [CVE-2016-2177]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2177
1541 [CVE-2016-2176]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2176
1542 [CVE-2016-2109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2109
1543 [CVE-2016-2107]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2107
1544 [CVE-2016-2106]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2106
1545 [CVE-2016-2105]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2105
1546 [CVE-2016-0800]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0800
1547 [CVE-2016-0799]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0799
1548 [CVE-2016-0798]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0798
1549 [CVE-2016-0797]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0797
1550 [CVE-2016-0705]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0705
1551 [CVE-2016-0702]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0702
1552 [CVE-2016-0701]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0701
1553 [CVE-2015-3197]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3197
1554 [CVE-2015-3196]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3196
1555 [CVE-2015-3195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3195
1556 [CVE-2015-3194]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3194
1557 [CVE-2015-3193]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3193
1558 [CVE-2015-1793]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1793
1559 [CVE-2015-1792]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1792
1560 [CVE-2015-1791]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1791
1561 [CVE-2015-1790]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1790
1562 [CVE-2015-1789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1789
1563 [CVE-2015-1788]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1788
1564 [CVE-2015-1787]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1787
1565 [CVE-2015-0293]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0293
1566 [CVE-2015-0291]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0291
1567 [CVE-2015-0290]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0290
1568 [CVE-2015-0289]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0289
1569 [CVE-2015-0288]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0288
1570 [CVE-2015-0287]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0287
1571 [CVE-2015-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0286
1572 [CVE-2015-0285]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0285
1573 [CVE-2015-0209]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0209
1574 [CVE-2015-0208]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0208
1575 [CVE-2015-0207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0207
1576 [CVE-2015-0206]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0206
1577 [CVE-2015-0205]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0205
1578 [CVE-2015-0204]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0204
1579 [CVE-2014-8275]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-8275
1580 [CVE-2014-5139]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-5139
1581 [CVE-2014-3572]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3572
1582 [CVE-2014-3571]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3571
1583 [CVE-2014-3570]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3570
1584 [CVE-2014-3569]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3569
1585 [CVE-2014-3568]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3568
1586 [CVE-2014-3567]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3567
1587 [CVE-2014-3566]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3566
1588 [CVE-2014-3513]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3513
1589 [CVE-2014-3512]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3512
1590 [CVE-2014-3511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3511
1591 [CVE-2014-3510]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3510
1592 [CVE-2014-3509]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3509
1593 [CVE-2014-3508]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3508
1594 [CVE-2014-3507]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3507
1595 [CVE-2014-3506]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3506
1596 [CVE-2014-3505]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3505
1597 [CVE-2014-3470]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3470
1598 [CVE-2014-0224]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0224
1599 [CVE-2014-0221]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0221
1600 [CVE-2014-0198]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0198
1601 [CVE-2014-0195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0195
1602 [CVE-2014-0160]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0160
1603 [CVE-2014-0076]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0076
1604 [CVE-2013-6450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6450
1605 [CVE-2013-6449]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6449
1606 [CVE-2013-4353]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-4353
1607 [CVE-2013-0169]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0169
1608 [CVE-2013-0166]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0166
1609 [CVE-2012-2686]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2686
1610 [CVE-2012-2333]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2333
1611 [CVE-2012-2110]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2110
1612 [CVE-2012-0884]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0884
1613 [CVE-2012-0050]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0050
1614 [CVE-2012-0027]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0027
1615 [CVE-2011-4619]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4619
1616 [CVE-2011-4577]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4577
1617 [CVE-2011-4576]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4576
1618 [CVE-2011-4108]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4108
1619 [CVE-2011-3210]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3210
1620 [CVE-2011-3207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3207
1621 [CVE-2011-0014]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-0014
1622 [CVE-2010-5298]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-5298
1623 [CVE-2010-4252]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4252
1624 [CVE-2010-4180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4180
1625 [CVE-2010-3864]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-3864
1626 [CVE-2010-2939]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-2939
1627 [CVE-2010-1633]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-1633
1628 [CVE-2010-0740]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0740
1629 [CVE-2010-0433]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0433
1630 [CVE-2009-3555]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3555
1631 [CVE-2009-0789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0789
1632 [CVE-2009-0591]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0591
1633 [CVE-2009-0590]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0590
1634 [CVE-2008-5077]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-5077
1635 [CVE-2006-4343]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4343
1636 [CVE-2006-4339]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4339
1637 [CVE-2006-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-3737
1638 [CVE-2006-2940]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2940
1639 [CVE-2006-2937]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2937
1640 [CVE-2005-2969]: https://www.openssl.org/news/vulnerabilities.html#CVE-2005-2969