xref: /freebsd/crypto/openssl/NEWS.md (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1NEWS
2====
3
4This file gives a brief overview of the major changes between each OpenSSL
5release. For more details please read the CHANGES file.
6
7OpenSSL Releases
8----------------
9
10 - [OpenSSL 3.0](#openssl-30)
11 - [OpenSSL 1.1.1](#openssl-111)
12 - [OpenSSL 1.1.0](#openssl-110)
13 - [OpenSSL 1.0.2](#openssl-102)
14 - [OpenSSL 1.0.1](#openssl-101)
15 - [OpenSSL 1.0.0](#openssl-100)
16 - [OpenSSL 0.9.x](#openssl-09x)
17
18OpenSSL 3.0
19-----------
20
21### Major changes between OpenSSL 3.0.12 and OpenSSL 3.0.13 [30 Jan 2024]
22
23  * Fixed PKCS12 Decoding crashes
24    ([CVE-2024-0727])
25  * Fixed Excessive time spent checking invalid RSA public keys
26    ([CVE-2023-6237])
27  * Fixed POLY1305 MAC implementation corrupting vector registers on PowerPC
28    CPUs which support PowerISA 2.07
29    ([CVE-2023-6129])
30  * Fix excessive time spent in DH check / generation with large Q parameter
31    value ([CVE-2023-5678])
32
33### Major changes between OpenSSL 3.0.11 and OpenSSL 3.0.12 [24 Oct 2023]
34
35  * Mitigate incorrect resize handling for symmetric cipher keys and IVs.
36    ([CVE-2023-5363])
37
38### Major changes between OpenSSL 3.0.10 and OpenSSL 3.0.11 [19 Sep 2023]
39
40  * Fix POLY1305 MAC implementation corrupting XMM registers on Windows
41    ([CVE-2023-4807])
42
43### Major changes between OpenSSL 3.0.9 and OpenSSL 3.0.10 [1 Aug 2023]
44
45  * Fix excessive time spent checking DH q parameter value ([CVE-2023-3817])
46  * Fix DH_check() excessive time with over sized modulus ([CVE-2023-3446])
47  * Do not ignore empty associated data entries with AES-SIV ([CVE-2023-2975])
48
49### Major changes between OpenSSL 3.0.8 and OpenSSL 3.0.9 [30 May 2023]
50
51  * Mitigate for very slow `OBJ_obj2txt()` performance with gigantic OBJECT
52    IDENTIFIER sub-identities.  ([CVE-2023-2650])
53  * Fixed buffer overread in AES-XTS decryption on ARM 64 bit platforms
54    ([CVE-2023-1255])
55  * Fixed documentation of X509_VERIFY_PARAM_add0_policy() ([CVE-2023-0466])
56  * Fixed handling of invalid certificate policies in leaf certificates
57    ([CVE-2023-0465])
58  * Limited the number of nodes created in a policy tree ([CVE-2023-0464])
59
60### Major changes between OpenSSL 3.0.7 and OpenSSL 3.0.8 [7 Feb 2023]
61
62  * Fixed NULL dereference during PKCS7 data verification ([CVE-2023-0401])
63  * Fixed X.400 address type confusion in X.509 GeneralName ([CVE-2023-0286])
64  * Fixed NULL dereference validating DSA public key ([CVE-2023-0217])
65  * Fixed Invalid pointer dereference in d2i_PKCS7 functions ([CVE-2023-0216])
66  * Fixed Use-after-free following BIO_new_NDEF ([CVE-2023-0215])
67  * Fixed Double free after calling PEM_read_bio_ex ([CVE-2022-4450])
68  * Fixed Timing Oracle in RSA Decryption ([CVE-2022-4304])
69  * Fixed X.509 Name Constraints Read Buffer Overflow ([CVE-2022-4203])
70  * Fixed X.509 Policy Constraints Double Locking ([CVE-2022-3996])
71
72### Major changes between OpenSSL 3.0.6 and OpenSSL 3.0.7 [1 Nov 2022]
73
74  * Added RIPEMD160 to the default provider.
75  * Fixed regressions introduced in 3.0.6 version.
76  * Fixed two buffer overflows in punycode decoding functions.
77    ([CVE-2022-3786]) and ([CVE-2022-3602])
78
79### Major changes between OpenSSL 3.0.5 and OpenSSL 3.0.6 [11 Oct 2022]
80
81  * Fix for custom ciphers to prevent accidental use of NULL encryption
82    ([CVE-2022-3358])
83
84### Major changes between OpenSSL 3.0.4 and OpenSSL 3.0.5 [5 Jul 2022]
85
86  * Fixed heap memory corruption with RSA private key operation
87    ([CVE-2022-2274])
88  * Fixed AES OCB failure to encrypt some bytes on 32-bit x86 platforms
89    ([CVE-2022-2097])
90
91### Major changes between OpenSSL 3.0.3 and OpenSSL 3.0.4 [21 Jun 2022]
92
93  * Fixed additional bugs in the c_rehash script which was not properly
94    sanitising shell metacharacters to prevent command injection
95    ([CVE-2022-2068])
96
97### Major changes between OpenSSL 3.0.2 and OpenSSL 3.0.3 [3 May 2022]
98
99  * Fixed a bug in the c_rehash script which was not properly sanitising shell
100    metacharacters to prevent command injection ([CVE-2022-1292])
101  * Fixed a bug in the function `OCSP_basic_verify` that verifies the signer
102    certificate on an OCSP response ([CVE-2022-1343])
103  * Fixed a bug where the RC4-MD5 ciphersuite incorrectly used the
104    AAD data as the MAC key ([CVE-2022-1434])
105  * Fix a bug in the OPENSSL_LH_flush() function that breaks reuse of the memory
106    occuppied by the removed hash table entries ([CVE-2022-1473])
107
108### Major changes between OpenSSL 3.0.1 and OpenSSL 3.0.2 [15 Mar 2022]
109
110  * Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever
111    for non-prime moduli ([CVE-2022-0778])
112
113### Major changes between OpenSSL 3.0.0 and OpenSSL 3.0.1 [14 Dec 2021]
114
115  * Fixed invalid handling of X509_verify_cert() internal errors in libssl
116    ([CVE-2021-4044])
117  * Allow fetching an operation from the provider that owns an unexportable key
118    as a fallback if that is still allowed by the property query.
119
120### Major changes between OpenSSL 1.1.1 and OpenSSL 3.0.0 [7 sep 2021]
121
122  * Enhanced 'openssl list' with many new options.
123  * Added migration guide to man7.
124  * Implemented support for fully "pluggable" TLSv1.3 groups.
125  * Added suport for Kernel TLS (KTLS).
126  * Changed the license to the Apache License v2.0.
127  * Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2,
128    RC4, RC5, and DES to the legacy provider.
129  * Moved the EVP digests MD2, MD4, MDC2, WHIRLPOOL and RIPEMD-160 to the legacy
130    provider.
131  * Added convenience functions for generating asymmetric key pairs.
132  * Deprecated the `OCSP_REQ_CTX` type and functions.
133  * Deprecated the `EC_KEY` and `EC_KEY_METHOD` types and functions.
134  * Deprecated the `RSA` and `RSA_METHOD` types and functions.
135  * Deprecated the `DSA` and `DSA_METHOD` types and functions.
136  * Deprecated the `DH` and `DH_METHOD` types and functions.
137  * Deprecated the `ERR_load_` functions.
138  * Remove the `RAND_DRBG` API.
139  * Deprecated the `ENGINE` API.
140  * Added `OSSL_LIB_CTX`, a libcrypto library context.
141  * Added various `_ex` functions to the OpenSSL API that support using
142    a non-default `OSSL_LIB_CTX`.
143  * Interactive mode is removed from the 'openssl' program.
144  * The X25519, X448, Ed25519, Ed448, SHAKE128 and SHAKE256 algorithms are
145    included in the FIPS provider.
146  * X509 certificates signed using SHA1 are no longer allowed at security
147    level 1 or higher. The default security level for TLS is 1, so
148    certificates signed using SHA1 are by default no longer trusted to
149    authenticate servers or clients.
150  * enable-crypto-mdebug and enable-crypto-mdebug-backtrace were mostly
151    disabled; the project uses address sanitize/leak-detect instead.
152  * Added a Certificate Management Protocol (CMP, RFC 4210) implementation
153    also covering CRMF (RFC 4211) and HTTP transfer (RFC 6712).
154    It is part of the crypto lib and adds a 'cmp' app with a demo configuration.
155    All widely used CMP features are supported for both clients and servers.
156  * Added a proper HTTP client supporting GET with optional redirection, POST,
157    arbitrary request and response content types, TLS, persistent connections,
158    connections via HTTP(s) proxies, connections and exchange via user-defined
159    BIOs (allowing implicit connections), and timeout checks.
160  * Added util/check-format.pl for checking adherence to the coding guidelines.
161  * Added OSSL_ENCODER, a generic encoder API.
162  * Added OSSL_DECODER, a generic decoder API.
163  * Added OSSL_PARAM_BLD, an easier to use API to OSSL_PARAM.
164  * Added error raising macros, ERR_raise() and ERR_raise_data().
165  * Deprecated ERR_put_error(), ERR_get_error_line(), ERR_get_error_line_data(),
166    ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
167    ERR_func_error_string().
168  * Added OSSL_PROVIDER_available(), to check provider availibility.
169  * Added 'openssl mac' that uses the EVP_MAC API.
170  * Added 'openssl kdf' that uses the EVP_KDF API.
171  * Add OPENSSL_info() and 'openssl info' to get built-in data.
172  * Add support for enabling instrumentation through trace and debug
173    output.
174  * Changed our version number scheme and set the next major release to
175    3.0.0
176  * Added EVP_MAC, an EVP layer MAC API, and a generic EVP_PKEY to EVP_MAC
177    bridge.  Supported MACs are: BLAKE2, CMAC, GMAC, HMAC, KMAC, POLY1305
178    and SIPHASH.
179  * Removed the heartbeat message in DTLS feature.
180  * Added EVP_KDF, an EVP layer KDF and PRF API, and a generic EVP_PKEY to
181    EVP_KDF bridge.  Supported KDFs are: HKDF, KBKDF, KRB5 KDF, PBKDF2,
182    PKCS12 KDF, SCRYPT, SSH KDF, SSKDF, TLS1 PRF, X9.42 KDF and X9.63 KDF.
183  * All of the low-level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224,
184    SHA256, SHA384, SHA512 and Whirlpool digest functions have been
185    deprecated.
186  * All of the low-level AES, Blowfish, Camellia, CAST, DES, IDEA, RC2,
187    RC4, RC5 and SEED cipher functions have been deprecated.
188  * All of the low-level DH, DSA, ECDH, ECDSA and RSA public key functions
189    have been deprecated.
190  * SSL 3, TLS 1.0, TLS 1.1, and DTLS 1.0 only work at security level 0,
191    except when RSA key exchange without SHA1 is used.
192  * Added providers, a new pluggability concept that will replace the
193    ENGINE API and ENGINE implementations.
194
195OpenSSL 1.1.1
196-------------
197
198### Major changes between OpenSSL 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]
199
200  * Fixed an SM2 Decryption Buffer Overflow ([CVE-2021-3711])
201  * Fixed various read buffer overruns processing ASN.1 strings ([CVE-2021-3712])
202
203### Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]
204
205  * Fixed a problem with verifying a certificate chain when using the
206    X509_V_FLAG_X509_STRICT flag ([CVE-2021-3450])
207  * Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
208    crafted renegotiation ClientHello message from a client ([CVE-2021-3449])
209
210### Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
211
212  * Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
213    function ([CVE-2021-23841])
214  * Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
215    padding mode to correctly check for rollback attacks
216  * Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
217    EVP_DecryptUpdate functions ([CVE-2021-23840])
218  * Fixed SRP_Calc_client_key so that it runs in constant time
219
220### Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]
221
222  * Fixed NULL pointer deref in GENERAL_NAME_cmp ([CVE-2020-1971])
223
224### Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]
225
226  * Disallow explicit curve parameters in verifications chains when
227    X509_V_FLAG_X509_STRICT is used
228  * Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
229    contexts
230  * Oracle Developer Studio will start reporting deprecation warnings
231
232### Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]
233
234  * Fixed segmentation fault in SSL_check_chain() ([CVE-2020-1967])
235
236### Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
237
238  * Revert the unexpected EOF reporting via SSL_ERROR_SSL
239
240### Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
241
242  * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
243    used in exponentiation with 512-bit moduli ([CVE-2019-1551])
244
245### Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
246
247  * Fixed a fork protection issue ([CVE-2019-1549])
248  * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
249    ([CVE-2019-1563])
250  * For built-in EC curves, ensure an EC_GROUP built from the curve name is
251    used even when parsing explicit parameters
252  * Compute ECC cofactors if not provided during EC_GROUP construction
253    ([CVE-2019-1547])
254  * Early start up entropy quality from the DEVRANDOM seed source has been
255    improved for older Linux systems
256  * Correct the extended master secret constant on EBCDIC systems
257  * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
258  * Changed DH_check to accept parameters with order q and 2q subgroups
259  * Significantly reduce secure memory usage by the randomness pools
260  * Revert the DEVRANDOM_WAIT feature for Linux systems
261
262### Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]
263
264  * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
265
266### Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]
267
268  * Change the info callback signals for the start and end of a post-handshake
269    message exchange in TLSv1.3.
270  * Fix a bug in DTLS over SCTP. This breaks interoperability with older
271    versions of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.
272
273### Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
274
275  * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
276  * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
277
278### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
279
280  * Support for TLSv1.3 added. The TLSv1.3 implementation includes:
281    * Fully compliant implementation of RFC8446 (TLSv1.3) on by default
282    * Early data (0-RTT)
283    * Post-handshake authentication and key update
284    * Middlebox Compatibility Mode
285    * TLSv1.3 PSKs
286    * Support for all five RFC8446 ciphersuites
287    * RSA-PSS signature algorithms (backported to TLSv1.2)
288    * Configurable session ticket support
289    * Stateless server support
290    * Rewrite of the packet construction code for "safer" packet handling
291    * Rewrite of the extension handling code
292    For further important information, see the [TLS1.3 page](
293    https://wiki.openssl.org/index.php/TLS1.3) in the OpenSSL Wiki.
294
295  * Complete rewrite of the OpenSSL random number generator to introduce the
296    following capabilities
297      * The default RAND method now utilizes an AES-CTR DRBG according to
298        NIST standard SP 800-90Ar1.
299      * Support for multiple DRBG instances with seed chaining.
300      * There is a public and private DRBG instance.
301      * The DRBG instances are fork-safe.
302      * Keep all global DRBG instances on the secure heap if it is enabled.
303      * The public and private DRBG instance are per thread for lock free
304      operation
305  * Support for various new cryptographic algorithms including:
306      * SHA3
307      * SHA512/224 and SHA512/256
308      * EdDSA (both Ed25519 and Ed448) including X509 and TLS support
309      * X448 (adding to the existing X25519 support in 1.1.0)
310      * Multi-prime RSA
311      * SM2
312      * SM3
313      * SM4
314      * SipHash
315      * ARIA (including TLS support)
316  * Significant Side-Channel attack security improvements
317  * Add a new ClientHello callback to provide the ability to adjust the SSL
318  object at an early stage.
319  * Add 'Maximum Fragment Length' TLS extension negotiation and support
320  * A new STORE module, which implements a uniform and URI based reader of
321   stores that can contain keys, certificates, CRLs and numerous other
322  objects.
323  * Move the display of configuration data to configdata.pm.
324  * Allow GNU style "make variables" to be used with Configure.
325  * Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
326  * Rewrite of devcrypto engine
327
328OpenSSL 1.1.0
329-------------
330
331### Major changes between OpenSSL 1.1.0k and OpenSSL 1.1.0l [10 Sep 2019]
332
333  * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
334    ([CVE-2019-1563])
335  * For built-in EC curves, ensure an EC_GROUP built from the curve name is
336    used even when parsing explicit parameters
337  * Compute ECC cofactors if not provided during EC_GROUP construction
338    ([CVE-2019-1547])
339  * Use Windows installation paths in the mingw builds ([CVE-2019-1552])
340
341### Major changes between OpenSSL 1.1.0j and OpenSSL 1.1.0k [28 May 2019]
342
343  * Prevent over long nonces in ChaCha20-Poly1305 ([CVE-2019-1543])
344
345### Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.0j [20 Nov 2018]
346
347  * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
348  * Timing vulnerability in ECDSA signature generation ([CVE-2018-0735])
349
350### Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [14 Aug 2018]
351
352  * Client DoS due to large DH parameter ([CVE-2018-0732])
353  * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
354
355### Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [27 Mar 2018]
356
357  * Constructed ASN.1 types with a recursive definition could exceed the
358    stack ([CVE-2018-0739])
359  * Incorrect CRYPTO_memcmp on HP-UX PA-RISC ([CVE-2018-0733])
360  * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
361
362### Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
363
364  * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
365  * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
366
367### Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
368
369  * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
370
371### Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
372
373  * Encrypt-Then-Mac renegotiation crash ([CVE-2017-3733])
374
375### Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
376
377  * Truncated packet could crash via OOB read ([CVE-2017-3731])
378  * Bad (EC)DHE parameters cause a client crash ([CVE-2017-3730])
379  * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
380
381### Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
382
383  * ChaCha20/Poly1305 heap-buffer-overflow ([CVE-2016-7054])
384  * CMS Null dereference ([CVE-2016-7053])
385  * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
386
387### Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
388
389  * Fix Use After Free for large message sizes ([CVE-2016-6309])
390
391### Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
392
393  * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
394  * SSL_peek() hang on empty record ([CVE-2016-6305])
395  * Excessive allocation of memory in tls_get_message_header()
396    ([CVE-2016-6307])
397  * Excessive allocation of memory in dtls1_preprocess_fragment()
398    ([CVE-2016-6308])
399
400### Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
401
402  * Copyright text was shrunk to a boilerplate that points to the license
403  * "shared" builds are now the default when possible
404  * Added support for "pipelining"
405  * Added the AFALG engine
406  * New threading API implemented
407  * Support for ChaCha20 and Poly1305 added to libcrypto and libssl
408  * Support for extended master secret
409  * CCM ciphersuites
410  * Reworked test suite, now based on perl, Test::Harness and Test::More
411  * *Most* libcrypto and libssl public structures were made opaque,
412    including:
413    BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
414    DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
415    BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
416    EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
417    X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
418    X509_LOOKUP, X509_LOOKUP_METHOD
419  * libssl internal structures made opaque
420  * SSLv2 support removed
421  * Kerberos ciphersuite support removed
422  * RC4 removed from DEFAULT ciphersuites in libssl
423  * 40 and 56 bit cipher support removed from libssl
424  * All public header files moved to include/openssl, no more symlinking
425  * SSL/TLS state machine, version negotiation and record layer rewritten
426  * EC revision: now operations use new EC_KEY_METHOD.
427  * Support for OCB mode added to libcrypto
428  * Support for asynchronous crypto operations added to libcrypto and libssl
429  * Deprecated interfaces can now be disabled at build time either
430    relative to the latest release via the "no-deprecated" Configure
431    argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
432  * Application software can be compiled with -DOPENSSL_API_COMPAT=version
433    to ensure that features deprecated in that version are not exposed.
434  * Support for RFC6698/RFC7671 DANE TLSA peer authentication
435  * Change of Configure to use --prefix as the main installation
436    directory location rather than --openssldir.  The latter becomes
437    the directory for certs, private key and openssl.cnf exclusively.
438  * Reworked BIO networking library, with full support for IPv6.
439  * New "unified" build system
440  * New security levels
441  * Support for scrypt algorithm
442  * Support for X25519
443  * Extended SSL_CONF support using configuration files
444  * KDF algorithm support. Implement TLS PRF as a KDF.
445  * Support for Certificate Transparency
446  * HKDF support.
447
448OpenSSL 1.0.2
449-------------
450
451### Major changes between OpenSSL 1.0.2s and OpenSSL 1.0.2t [10 Sep 2019]
452
453  * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
454    ([CVE-2019-1563])
455  * For built-in EC curves, ensure an EC_GROUP built from the curve name is
456    used even when parsing explicit parameters
457  * Compute ECC cofactors if not provided during EC_GROUP construction
458    ([CVE-2019-1547])
459  * Document issue with installation paths in diverse Windows builds
460    ([CVE-2019-1552])
461
462### Major changes between OpenSSL 1.0.2r and OpenSSL 1.0.2s [28 May 2019]
463
464  * None
465
466### Major changes between OpenSSL 1.0.2q and OpenSSL 1.0.2r [26 Feb 2019]
467
468  * 0-byte record padding oracle ([CVE-2019-1559])
469
470### Major changes between OpenSSL 1.0.2p and OpenSSL 1.0.2q [20 Nov 2018]
471
472  * Microarchitecture timing vulnerability in ECC scalar multiplication ([CVE-2018-5407])
473  * Timing vulnerability in DSA signature generation ([CVE-2018-0734])
474
475### Major changes between OpenSSL 1.0.2o and OpenSSL 1.0.2p [14 Aug 2018]
476
477  * Client DoS due to large DH parameter ([CVE-2018-0732])
478  * Cache timing vulnerability in RSA Key Generation ([CVE-2018-0737])
479
480### Major changes between OpenSSL 1.0.2n and OpenSSL 1.0.2o [27 Mar 2018]
481
482  * Constructed ASN.1 types with a recursive definition could exceed the
483    stack ([CVE-2018-0739])
484
485### Major changes between OpenSSL 1.0.2m and OpenSSL 1.0.2n [7 Dec 2017]
486
487  * Read/write after SSL object in error state ([CVE-2017-3737])
488  * rsaz_1024_mul_avx2 overflow bug on x86_64 ([CVE-2017-3738])
489
490### Major changes between OpenSSL 1.0.2l and OpenSSL 1.0.2m [2 Nov 2017]
491
492  * bn_sqrx8x_internal carry bug on x86_64 ([CVE-2017-3736])
493  * Malformed X.509 IPAddressFamily could cause OOB read ([CVE-2017-3735])
494
495### Major changes between OpenSSL 1.0.2k and OpenSSL 1.0.2l [25 May 2017]
496
497  * config now recognises 64-bit mingw and chooses mingw64 instead of mingw
498
499### Major changes between OpenSSL 1.0.2j and OpenSSL 1.0.2k [26 Jan 2017]
500
501  * Truncated packet could crash via OOB read ([CVE-2017-3731])
502  * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2017-3732])
503  * Montgomery multiplication may produce incorrect results ([CVE-2016-7055])
504
505### Major changes between OpenSSL 1.0.2i and OpenSSL 1.0.2j [26 Sep 2016]
506
507  * Missing CRL sanity check ([CVE-2016-7052])
508
509### Major changes between OpenSSL 1.0.2h and OpenSSL 1.0.2i [22 Sep 2016]
510
511  * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
512  * SWEET32 Mitigation ([CVE-2016-2183])
513  * OOB write in MDC2_Update() ([CVE-2016-6303])
514  * Malformed SHA512 ticket DoS ([CVE-2016-6302])
515  * OOB write in BN_bn2dec() ([CVE-2016-2182])
516  * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
517  * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
518  * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
519  * DTLS buffered message DoS ([CVE-2016-2179])
520  * DTLS replay protection DoS ([CVE-2016-2181])
521  * Certificate message OOB reads ([CVE-2016-6306])
522
523### Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
524
525  * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
526  * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
527  * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
528  * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
529  * EBCDIC overread ([CVE-2016-2176])
530  * Modify behavior of ALPN to invoke callback after SNI/servername
531    callback, such that updates to the SSL_CTX affect ALPN.
532  * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
533    the default.
534  * Only remove the SSLv2 methods with the no-ssl2-method option.
535
536### Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
537
538  * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
539  * Disable SSLv2 default build, default negotiation and weak ciphers
540    ([CVE-2016-0800])
541  * Fix a double-free in DSA code ([CVE-2016-0705])
542  * Disable SRP fake user seed to address a server memory leak
543    ([CVE-2016-0798])
544  * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
545    ([CVE-2016-0797])
546  * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
547  * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
548
549### Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
550
551  * DH small subgroups ([CVE-2016-0701])
552  * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
553
554### Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
555
556  * BN_mod_exp may produce incorrect results on x86_64 ([CVE-2015-3193])
557  * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
558  * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
559  * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
560  * In DSA_generate_parameters_ex, if the provided seed is too short,
561    return an error
562
563### Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
564
565  * Alternate chains certificate forgery ([CVE-2015-1793])
566  * Race condition handling PSK identify hint ([CVE-2015-3196])
567
568### Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
569
570  * Fix HMAC ABI incompatibility
571
572### Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
573
574  * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
575  * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
576  * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
577  * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
578  * Race condition handling NewSessionTicket ([CVE-2015-1791])
579
580### Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
581
582  * OpenSSL 1.0.2 ClientHello sigalgs DoS fix ([CVE-2015-0291])
583  * Multiblock corrupted pointer fix ([CVE-2015-0290])
584  * Segmentation fault in DTLSv1_listen fix ([CVE-2015-0207])
585  * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
586  * Segmentation fault for invalid PSS parameters fix ([CVE-2015-0208])
587  * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
588  * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
589  * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
590  * Empty CKE with client auth and DHE fix ([CVE-2015-1787])
591  * Handshake with unseeded PRNG fix ([CVE-2015-0285])
592  * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
593  * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
594  * Removed the export ciphers from the DEFAULT ciphers
595
596### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]
597
598  * Suite B support for TLS 1.2 and DTLS 1.2
599  * Support for DTLS 1.2
600  * TLS automatic EC curve selection.
601  * API to set TLS supported signature algorithms and curves
602  * SSL_CONF configuration API.
603  * TLS Brainpool support.
604  * ALPN support.
605  * CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
606
607OpenSSL 1.0.1
608-------------
609
610### Major changes between OpenSSL 1.0.1t and OpenSSL 1.0.1u [22 Sep 2016]
611
612  * OCSP Status Request extension unbounded memory growth ([CVE-2016-6304])
613  * SWEET32 Mitigation ([CVE-2016-2183])
614  * OOB write in MDC2_Update() ([CVE-2016-6303])
615  * Malformed SHA512 ticket DoS ([CVE-2016-6302])
616  * OOB write in BN_bn2dec() ([CVE-2016-2182])
617  * OOB read in TS_OBJ_print_bio() ([CVE-2016-2180])
618  * Pointer arithmetic undefined behaviour ([CVE-2016-2177])
619  * Constant time flag not preserved in DSA signing ([CVE-2016-2178])
620  * DTLS buffered message DoS ([CVE-2016-2179])
621  * DTLS replay protection DoS ([CVE-2016-2181])
622  * Certificate message OOB reads ([CVE-2016-6306])
623
624### Major changes between OpenSSL 1.0.1s and OpenSSL 1.0.1t [3 May 2016]
625
626  * Prevent padding oracle in AES-NI CBC MAC check ([CVE-2016-2107])
627  * Fix EVP_EncodeUpdate overflow ([CVE-2016-2105])
628  * Fix EVP_EncryptUpdate overflow ([CVE-2016-2106])
629  * Prevent ASN.1 BIO excessive memory allocation ([CVE-2016-2109])
630  * EBCDIC overread ([CVE-2016-2176])
631  * Modify behavior of ALPN to invoke callback after SNI/servername
632    callback, such that updates to the SSL_CTX affect ALPN.
633  * Remove LOW from the DEFAULT cipher list.  This removes singles DES from
634    the default.
635  * Only remove the SSLv2 methods with the no-ssl2-method option.
636
637### Major changes between OpenSSL 1.0.1r and OpenSSL 1.0.1s [1 Mar 2016]
638
639  * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
640  * Disable SSLv2 default build, default negotiation and weak ciphers
641    ([CVE-2016-0800])
642  * Fix a double-free in DSA code ([CVE-2016-0705])
643  * Disable SRP fake user seed to address a server memory leak
644    ([CVE-2016-0798])
645  * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
646    ([CVE-2016-0797])
647  * Fix memory issues in BIO_*printf functions ([CVE-2016-0799])
648  * Fix side channel attack on modular exponentiation ([CVE-2016-0702])
649
650### Major changes between OpenSSL 1.0.1q and OpenSSL 1.0.1r [28 Jan 2016]
651
652  * Protection for DH small subgroup attacks
653  * SSLv2 doesn't block disabled ciphers ([CVE-2015-3197])
654
655### Major changes between OpenSSL 1.0.1p and OpenSSL 1.0.1q [3 Dec 2015]
656
657  * Certificate verify crash with missing PSS parameter ([CVE-2015-3194])
658  * X509_ATTRIBUTE memory leak ([CVE-2015-3195])
659  * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
660  * In DSA_generate_parameters_ex, if the provided seed is too short,
661    return an error
662
663### Major changes between OpenSSL 1.0.1o and OpenSSL 1.0.1p [9 Jul 2015]
664
665  * Alternate chains certificate forgery ([CVE-2015-1793])
666  * Race condition handling PSK identify hint ([CVE-2015-3196])
667
668### Major changes between OpenSSL 1.0.1n and OpenSSL 1.0.1o [12 Jun 2015]
669
670  * Fix HMAC ABI incompatibility
671
672### Major changes between OpenSSL 1.0.1m and OpenSSL 1.0.1n [11 Jun 2015]
673
674  * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
675  * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
676  * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
677  * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
678  * Race condition handling NewSessionTicket ([CVE-2015-1791])
679
680### Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.1m [19 Mar 2015]
681
682  * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
683  * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
684  * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
685  * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
686  * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
687  * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
688  * Removed the export ciphers from the DEFAULT ciphers
689
690### Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
691
692  * Build fixes for the Windows and OpenVMS platforms
693
694### Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
695
696  * Fix for [CVE-2014-3571]
697  * Fix for [CVE-2015-0206]
698  * Fix for [CVE-2014-3569]
699  * Fix for [CVE-2014-3572]
700  * Fix for [CVE-2015-0204]
701  * Fix for [CVE-2015-0205]
702  * Fix for [CVE-2014-8275]
703  * Fix for [CVE-2014-3570]
704
705### Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
706
707  * Fix for [CVE-2014-3513]
708  * Fix for [CVE-2014-3567]
709  * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
710  * Fix for [CVE-2014-3568]
711
712### Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
713
714  * Fix for [CVE-2014-3512]
715  * Fix for [CVE-2014-3511]
716  * Fix for [CVE-2014-3510]
717  * Fix for [CVE-2014-3507]
718  * Fix for [CVE-2014-3506]
719  * Fix for [CVE-2014-3505]
720  * Fix for [CVE-2014-3509]
721  * Fix for [CVE-2014-5139]
722  * Fix for [CVE-2014-3508]
723
724### Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
725
726  * Fix for [CVE-2014-0224]
727  * Fix for [CVE-2014-0221]
728  * Fix for [CVE-2014-0198]
729  * Fix for [CVE-2014-0195]
730  * Fix for [CVE-2014-3470]
731  * Fix for [CVE-2010-5298]
732
733### Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
734
735  * Fix for [CVE-2014-0160]
736  * Add TLS padding extension workaround for broken servers.
737  * Fix for [CVE-2014-0076]
738
739### Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
740
741  * Don't include gmt_unix_time in TLS server and client random values
742  * Fix for TLS record tampering bug ([CVE-2013-4353])
743  * Fix for TLS version checking bug ([CVE-2013-6449])
744  * Fix for DTLS retransmission bug ([CVE-2013-6450])
745
746### Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]
747
748  * Corrected fix for ([CVE-2013-0169])
749
750### Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]
751
752  * Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
753  * Include the fips configuration module.
754  * Fix OCSP bad key DoS attack ([CVE-2013-0166])
755  * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
756  * Fix for TLS AESNI record handling flaw ([CVE-2012-2686])
757
758### Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]
759
760  * Fix TLS/DTLS record length checking bug ([CVE-2012-2333])
761  * Don't attempt to use non-FIPS composite ciphers in FIPS mode.
762
763### Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]
764
765  * Fix compilation error on non-x86 platforms.
766  * Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
767  * Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
768
769### Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]
770
771  * Fix for ASN1 overflow bug ([CVE-2012-2110])
772  * Workarounds for some servers that hang on long client hellos.
773  * Fix SEGV in AES code.
774
775### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]
776
777  * TLS/DTLS heartbeat support.
778  * SCTP support.
779  * RFC 5705 TLS key material exporter.
780  * RFC 5764 DTLS-SRTP negotiation.
781  * Next Protocol Negotiation.
782  * PSS signatures in certificates, requests and CRLs.
783  * Support for password based recipient info for CMS.
784  * Support TLS v1.2 and TLS v1.1.
785  * Preliminary FIPS capability for unvalidated 2.0 FIPS module.
786  * SRP support.
787
788OpenSSL 1.0.0
789-------------
790
791### Major changes between OpenSSL 1.0.0s and OpenSSL 1.0.0t [3 Dec 2015]
792
793  * X509_ATTRIBUTE memory leak (([CVE-2015-3195]))
794  * Race condition handling PSK identify hint ([CVE-2015-3196])
795
796### Major changes between OpenSSL 1.0.0r and OpenSSL 1.0.0s [11 Jun 2015]
797
798  * Malformed ECParameters causes infinite loop ([CVE-2015-1788])
799  * Exploitable out-of-bounds read in X509_cmp_time ([CVE-2015-1789])
800  * PKCS7 crash with missing EnvelopedContent ([CVE-2015-1790])
801  * CMS verify infinite loop with unknown hash function ([CVE-2015-1792])
802  * Race condition handling NewSessionTicket ([CVE-2015-1791])
803
804### Major changes between OpenSSL 1.0.0q and OpenSSL 1.0.0r [19 Mar 2015]
805
806  * Segmentation fault in ASN1_TYPE_cmp fix ([CVE-2015-0286])
807  * ASN.1 structure reuse memory corruption fix ([CVE-2015-0287])
808  * PKCS7 NULL pointer dereferences fix ([CVE-2015-0289])
809  * DoS via reachable assert in SSLv2 servers fix ([CVE-2015-0293])
810  * Use After Free following d2i_ECPrivatekey error fix ([CVE-2015-0209])
811  * X509_to_X509_REQ NULL pointer deref fix ([CVE-2015-0288])
812  * Removed the export ciphers from the DEFAULT ciphers
813
814### Major changes between OpenSSL 1.0.0p and OpenSSL 1.0.0q [15 Jan 2015]
815
816  * Build fixes for the Windows and OpenVMS platforms
817
818### Major changes between OpenSSL 1.0.0o and OpenSSL 1.0.0p [8 Jan 2015]
819
820  * Fix for [CVE-2014-3571]
821  * Fix for [CVE-2015-0206]
822  * Fix for [CVE-2014-3569]
823  * Fix for [CVE-2014-3572]
824  * Fix for [CVE-2015-0204]
825  * Fix for [CVE-2015-0205]
826  * Fix for [CVE-2014-8275]
827  * Fix for [CVE-2014-3570]
828
829### Major changes between OpenSSL 1.0.0n and OpenSSL 1.0.0o [15 Oct 2014]
830
831  * Fix for [CVE-2014-3513]
832  * Fix for [CVE-2014-3567]
833  * Mitigation for [CVE-2014-3566] (SSL protocol vulnerability)
834  * Fix for [CVE-2014-3568]
835
836### Major changes between OpenSSL 1.0.0m and OpenSSL 1.0.0n [6 Aug 2014]
837
838  * Fix for [CVE-2014-3510]
839  * Fix for [CVE-2014-3507]
840  * Fix for [CVE-2014-3506]
841  * Fix for [CVE-2014-3505]
842  * Fix for [CVE-2014-3509]
843  * Fix for [CVE-2014-3508]
844
845  Known issues in OpenSSL 1.0.0m:
846
847  * EAP-FAST and other applications using tls_session_secret_cb
848    won't resume sessions. Fixed in 1.0.0n-dev
849  * Compilation failure of s3_pkt.c on some platforms due to missing
850    `<limits.h>` include. Fixed in 1.0.0n-dev
851
852### Major changes between OpenSSL 1.0.0l and OpenSSL 1.0.0m [5 Jun 2014]
853
854  * Fix for [CVE-2014-0224]
855  * Fix for [CVE-2014-0221]
856  * Fix for [CVE-2014-0198]
857  * Fix for [CVE-2014-0195]
858  * Fix for [CVE-2014-3470]
859  * Fix for [CVE-2014-0076]
860  * Fix for [CVE-2010-5298]
861
862### Major changes between OpenSSL 1.0.0k and OpenSSL 1.0.0l [6 Jan 2014]
863
864  * Fix for DTLS retransmission bug ([CVE-2013-6450])
865
866### Major changes between OpenSSL 1.0.0j and OpenSSL 1.0.0k [5 Feb 2013]
867
868  * Fix for SSL/TLS/DTLS CBC plaintext recovery attack ([CVE-2013-0169])
869  * Fix OCSP bad key DoS attack ([CVE-2013-0166])
870
871### Major changes between OpenSSL 1.0.0i and OpenSSL 1.0.0j [10 May 2012]
872
873  * Fix DTLS record length checking bug ([CVE-2012-2333])
874
875### Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.0i [19 Apr 2012]
876
877  * Fix for ASN1 overflow bug ([CVE-2012-2110])
878
879### Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]
880
881  * Fix for CMS/PKCS#7 MMA ([CVE-2012-0884])
882  * Corrected fix for ([CVE-2011-4619])
883  * Various DTLS fixes.
884
885### Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]
886
887  * Fix for DTLS DoS issue ([CVE-2012-0050])
888
889### Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]
890
891  * Fix for DTLS plaintext recovery attack ([CVE-2011-4108])
892  * Clear block padding bytes of SSL 3.0 records ([CVE-2011-4576])
893  * Only allow one SGC handshake restart for SSL/TLS ([CVE-2011-4619])
894  * Check parameters are not NULL in GOST ENGINE ([CVE-2012-0027])
895  * Check for malformed RFC3779 data ([CVE-2011-4577])
896
897### Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]
898
899  * Fix for CRL vulnerability issue ([CVE-2011-3207])
900  * Fix for ECDH crashes ([CVE-2011-3210])
901  * Protection against EC timing attacks.
902  * Support ECDH ciphersuites for certificates using SHA2 algorithms.
903  * Various DTLS fixes.
904
905### Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]
906
907  * Fix for security issue ([CVE-2011-0014])
908
909### Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]
910
911  * Fix for security issue ([CVE-2010-4180])
912  * Fix for ([CVE-2010-4252])
913  * Fix mishandling of absent EC point format extension.
914  * Fix various platform compilation issues.
915  * Corrected fix for security issue ([CVE-2010-3864]).
916
917### Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]
918
919  * Fix for security issue ([CVE-2010-3864]).
920  * Fix for ([CVE-2010-2939])
921  * Fix WIN32 build system for GOST ENGINE.
922
923### Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]
924
925  * Fix for security issue ([CVE-2010-1633]).
926  * GOST MAC and CFB fixes.
927
928### Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]
929
930  * RFC3280 path validation: sufficient to process PKITS tests.
931  * Integrated support for PVK files and keyblobs.
932  * Change default private key format to PKCS#8.
933  * CMS support: able to process all examples in RFC4134
934  * Streaming ASN1 encode support for PKCS#7 and CMS.
935  * Multiple signer and signer add support for PKCS#7 and CMS.
936  * ASN1 printing support.
937  * Whirlpool hash algorithm added.
938  * RFC3161 time stamp support.
939  * New generalised public key API supporting ENGINE based algorithms.
940  * New generalised public key API utilities.
941  * New ENGINE supporting GOST algorithms.
942  * SSL/TLS GOST ciphersuite support.
943  * PKCS#7 and CMS GOST support.
944  * RFC4279 PSK ciphersuite support.
945  * Supported points format extension for ECC ciphersuites.
946  * ecdsa-with-SHA224/256/384/512 signature types.
947  * dsa-with-SHA224 and dsa-with-SHA256 signature types.
948  * Opaque PRF Input TLS extension support.
949  * Updated time routines to avoid OS limitations.
950
951OpenSSL 0.9.x
952-------------
953
954### Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]
955
956  * CFB cipher definition fixes.
957  * Fix security issues [CVE-2010-0740] and [CVE-2010-0433].
958
959### Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]
960
961  * Cipher definition fixes.
962  * Workaround for slow RAND_poll() on some WIN32 versions.
963  * Remove MD2 from algorithm tables.
964  * SPKAC handling fixes.
965  * Support for RFC5746 TLS renegotiation extension.
966  * Compression memory leak fixed.
967  * Compression session resumption fixed.
968  * Ticket and SNI coexistence fixes.
969  * Many fixes to DTLS handling.
970
971### Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]
972
973  * Temporary work around for [CVE-2009-3555]: disable renegotiation.
974
975### Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]
976
977  * Fix various build issues.
978  * Fix security issues [CVE-2009-0590], [CVE-2009-0591], [CVE-2009-0789]
979
980### Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]
981
982  * Fix security issue ([CVE-2008-5077])
983  * Merge FIPS 140-2 branch code.
984
985### Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]
986
987  * CryptoAPI ENGINE support.
988  * Various precautionary measures.
989  * Fix for bugs affecting certificate request creation.
990  * Support for local machine keyset attribute in PKCS#12 files.
991
992### Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]
993
994  * Backport of CMS functionality to 0.9.8.
995  * Fixes for bugs introduced with 0.9.8f.
996
997### Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]
998
999  * Add gcc 4.2 support.
1000  * Add support for AES and SSE2 assembly language optimization
1001    for VC++ build.
1002  * Support for RFC4507bis and server name extensions if explicitly
1003    selected at compile time.
1004  * DTLS improvements.
1005  * RFC4507bis support.
1006  * TLS Extensions support.
1007
1008### Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]
1009
1010  * Various ciphersuite selection fixes.
1011  * RFC3779 support.
1012
1013### Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]
1014
1015  * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1016  * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1017  * Changes to ciphersuite selection algorithm
1018
1019### Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]
1020
1021  * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1022  * New cipher Camellia
1023
1024### Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]
1025
1026  * Cipher string fixes.
1027  * Fixes for VC++ 2005.
1028  * Updated ECC cipher suite support.
1029  * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
1030  * Zlib compression usage fixes.
1031  * Built in dynamic engine compilation support on Win32.
1032  * Fixes auto dynamic engine loading in Win32.
1033
1034### Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]
1035
1036  * Fix potential SSL 2.0 rollback ([CVE-2005-2969])
1037  * Extended Windows CE support
1038
1039### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]
1040
1041  * Major work on the BIGNUM library for higher efficiency and to
1042    make operations more streamlined and less contradictory.  This
1043    is the result of a major audit of the BIGNUM library.
1044  * Addition of BIGNUM functions for fields GF(2^m) and NIST
1045    curves, to support the Elliptic Crypto functions.
1046  * Major work on Elliptic Crypto; ECDH and ECDSA added, including
1047    the use through EVP, X509 and ENGINE.
1048  * New ASN.1 mini-compiler that's usable through the OpenSSL
1049    configuration file.
1050  * Added support for ASN.1 indefinite length constructed encoding.
1051  * New PKCS#12 'medium level' API to manipulate PKCS#12 files.
1052  * Complete rework of shared library construction and linking
1053    programs with shared or static libraries, through a separate
1054    Makefile.shared.
1055  * Rework of the passing of parameters from one Makefile to another.
1056  * Changed ENGINE framework to load dynamic engine modules
1057    automatically from specifically given directories.
1058  * New structure and ASN.1 functions for CertificatePair.
1059  * Changed the ZLIB compression method to be stateful.
1060  * Changed the key-generation and primality testing "progress"
1061    mechanism to take a structure that contains the ticker
1062    function and an argument.
1063  * New engine module: GMP (performs private key exponentiation).
1064  * New engine module: VIA PadLOck ACE extension in VIA C3
1065    Nehemiah processors.
1066  * Added support for IPv6 addresses in certificate extensions.
1067    See RFC 1884, section 2.2.
1068  * Added support for certificate policy mappings, policy
1069    constraints and name constraints.
1070  * Added support for multi-valued AVAs in the OpenSSL
1071    configuration file.
1072  * Added support for multiple certificates with the same subject
1073    in the 'openssl ca' index file.
1074  * Make it possible to create self-signed certificates using
1075    'openssl ca -selfsign'.
1076  * Make it possible to generate a serial number file with
1077    'openssl ca -create_serial'.
1078  * New binary search functions with extended functionality.
1079  * New BUF functions.
1080  * New STORE structure and library to provide an interface to all
1081    sorts of data repositories.  Supports storage of public and
1082    private keys, certificates, CRLs, numbers and arbitrary blobs.
1083    This library is unfortunately unfinished and unused within
1084    OpenSSL.
1085  * New control functions for the error stack.
1086  * Changed the PKCS#7 library to support one-pass S/MIME
1087    processing.
1088  * Added the possibility to compile without old deprecated
1089    functionality with the OPENSSL_NO_DEPRECATED macro or the
1090    'no-deprecated' argument to the config and Configure scripts.
1091  * Constification of all ASN.1 conversion functions, and other
1092    affected functions.
1093  * Improved platform support for PowerPC.
1094  * New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
1095  * New X509_VERIFY_PARAM structure to support parameterisation
1096  of X.509 path validation.
1097  * Major overhaul of RC4 performance on Intel P4, IA-64 and
1098    AMD64.
1099  * Changed the Configure script to have some algorithms disabled
1100    by default.  Those can be explicitly enabled with the new
1101    argument form 'enable-xxx'.
1102  * Change the default digest in 'openssl' commands from MD5 to
1103    SHA-1.
1104  * Added support for DTLS.
1105  * New BIGNUM blinding.
1106  * Added support for the RSA-PSS encryption scheme
1107  * Added support for the RSA X.931 padding.
1108  * Added support for BSD sockets on NetWare.
1109  * Added support for files larger than 2GB.
1110  * Added initial support for Win64.
1111  * Added alternate pkg-config files.
1112
1113### Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]
1114
1115  * FIPS 1.1.1 module linking.
1116  * Various ciphersuite selection fixes.
1117
1118### Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]
1119
1120  * Introduce limits to prevent malicious key DoS  ([CVE-2006-2940])
1121  * Fix security issues [CVE-2006-2937], [CVE-2006-3737], [CVE-2006-4343]
1122
1123### Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]
1124
1125  * Fix Daniel Bleichenbacher forged signature attack, [CVE-2006-4339]
1126
1127### Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]
1128
1129  * Visual C++ 2005 fixes.
1130  * Update Windows build system for FIPS.
1131
1132### Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]
1133
1134  * Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
1135
1136### Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]
1137
1138  * Fix SSL 2.0 Rollback ([CVE-2005-2969])
1139  * Allow use of fixed-length exponent on DSA signing
1140  * Default fixed-window RSA, DSA, DH private-key operations
1141
1142### Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]
1143
1144  * More compilation issues fixed.
1145  * Adaptation to more modern Kerberos API.
1146  * Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
1147  * Enhanced x86_64 assembler BIGNUM module.
1148  * More constification.
1149  * Added processing of proxy certificates (RFC 3820).
1150
1151### Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]
1152
1153  * Several compilation issues fixed.
1154  * Many memory allocation failure checks added.
1155  * Improved comparison of X509 Name type.
1156  * Mandatory basic checks on certificates.
1157  * Performance improvements.
1158
1159### Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]
1160
1161  * Fix race condition in CRL checking code.
1162  * Fixes to PKCS#7 (S/MIME) code.
1163
1164### Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]
1165
1166  * Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
1167  * Security: Fix null-pointer assignment in do_change_cipher_spec()
1168  * Allow multiple active certificates with same subject in CA index
1169  * Multiple X509 verification fixes
1170  * Speed up HMAC and other operations
1171
1172### Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]
1173
1174  * Security: fix various ASN1 parsing bugs.
1175  * New -ignore_err option to OCSP utility.
1176  * Various interop and bug fixes in S/MIME code.
1177  * SSL/TLS protocol fix for unrequested client certificates.
1178
1179### Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]
1180
1181  * Security: counter the Klima-Pokorny-Rosa extension of
1182    Bleichbacher's attack
1183  * Security: make RSA blinding default.
1184  * Configuration: Irix fixes, AIX fixes, better mingw support.
1185  * Support for new platforms: linux-ia64-ecc.
1186  * Build: shared library support fixes.
1187  * ASN.1: treat domainComponent correctly.
1188  * Documentation: fixes and additions.
1189
1190### Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]
1191
1192  * Security: Important security related bugfixes.
1193  * Enhanced compatibility with MIT Kerberos.
1194  * Can be built without the ENGINE framework.
1195  * IA32 assembler enhancements.
1196  * Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
1197  * Configuration: the no-err option now works properly.
1198  * SSL/TLS: now handles manual certificate chain building.
1199  * SSL/TLS: certain session ID malfunctions corrected.
1200
1201### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]
1202
1203  * New library section OCSP.
1204  * Complete rewrite of ASN1 code.
1205  * CRL checking in verify code and openssl utility.
1206  * Extension copying in 'ca' utility.
1207  * Flexible display options in 'ca' utility.
1208  * Provisional support for international characters with UTF8.
1209  * Support for external crypto devices ('engine') is no longer
1210    a separate distribution.
1211  * New elliptic curve library section.
1212  * New AES (Rijndael) library section.
1213  * Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
1214    Linux x86_64, Linux 64-bit on Sparc v9
1215  * Extended support for some platforms: VxWorks
1216  * Enhanced support for shared libraries.
1217  * Now only builds PIC code when shared library support is requested.
1218  * Support for pkg-config.
1219  * Lots of new manuals.
1220  * Makes symbolic links to or copies of manuals to cover all described
1221    functions.
1222  * Change DES API to clean up the namespace (some applications link also
1223    against libdes providing similar functions having the same name).
1224    Provide macros for backward compatibility (will be removed in the
1225    future).
1226  * Unify handling of cryptographic algorithms (software and engine)
1227    to be available via EVP routines for asymmetric and symmetric ciphers.
1228  * NCONF: new configuration handling routines.
1229  * Change API to use more 'const' modifiers to improve error checking
1230    and help optimizers.
1231  * Finally remove references to RSAref.
1232  * Reworked parts of the BIGNUM code.
1233  * Support for new engines: Broadcom ubsec, Accelerated Encryption
1234    Processing, IBM 4758.
1235  * A few new engines added in the demos area.
1236  * Extended and corrected OID (object identifier) table.
1237  * PRNG: query at more locations for a random device, automatic query for
1238    EGD style random sources at several locations.
1239  * SSL/TLS: allow optional cipher choice according to server's preference.
1240  * SSL/TLS: allow server to explicitly set new session ids.
1241  * SSL/TLS: support Kerberos cipher suites (RFC2712).
1242    Only supports MIT Kerberos for now.
1243  * SSL/TLS: allow more precise control of renegotiations and sessions.
1244  * SSL/TLS: add callback to retrieve SSL/TLS messages.
1245  * SSL/TLS: support AES cipher suites (RFC3268).
1246
1247### Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]
1248
1249  * Security: fix various ASN1 parsing bugs.
1250  * SSL/TLS protocol fix for unrequested client certificates.
1251
1252### Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]
1253
1254  * Security: counter the Klima-Pokorny-Rosa extension of
1255    Bleichbacher's attack
1256  * Security: make RSA blinding default.
1257  * Build: shared library support fixes.
1258
1259### Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]
1260
1261  * Important security related bugfixes.
1262
1263### Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]
1264
1265  * New configuration targets for Tandem OSS and A/UX.
1266  * New OIDs for Microsoft attributes.
1267  * Better handling of SSL session caching.
1268  * Better comparison of distinguished names.
1269  * Better handling of shared libraries in a mixed GNU/non-GNU environment.
1270  * Support assembler code with Borland C.
1271  * Fixes for length problems.
1272  * Fixes for uninitialised variables.
1273  * Fixes for memory leaks, some unusual crashes and some race conditions.
1274  * Fixes for smaller building problems.
1275  * Updates of manuals, FAQ and other instructive documents.
1276
1277### Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]
1278
1279  * Important building fixes on Unix.
1280
1281### Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]
1282
1283  * Various important bugfixes.
1284
1285### Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]
1286
1287  * Important security related bugfixes.
1288  * Various SSL/TLS library bugfixes.
1289
1290### Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]
1291
1292  * Various SSL/TLS library bugfixes.
1293  * Fix DH parameter generation for 'non-standard' generators.
1294
1295### Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]
1296
1297  * Various SSL/TLS library bugfixes.
1298  * BIGNUM library fixes.
1299  * RSA OAEP and random number generation fixes.
1300  * Object identifiers corrected and added.
1301  * Add assembler BN routines for IA64.
1302  * Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
1303    MIPS Linux; shared library support for Irix, HP-UX.
1304  * Add crypto accelerator support for AEP, Baltimore SureWare,
1305    Broadcom and Cryptographic Appliance's keyserver
1306    [in 0.9.6c-engine release].
1307
1308### Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]
1309
1310  * Security fix: PRNG improvements.
1311  * Security fix: RSA OAEP check.
1312  * Security fix: Reinsert and fix countermeasure to Bleichbacher's
1313    attack.
1314  * MIPS bug fix in BIGNUM.
1315  * Bug fix in "openssl enc".
1316  * Bug fix in X.509 printing routine.
1317  * Bug fix in DSA verification routine and DSA S/MIME verification.
1318  * Bug fix to make PRNG thread-safe.
1319  * Bug fix in RAND_file_name().
1320  * Bug fix in compatibility mode trust settings.
1321  * Bug fix in blowfish EVP.
1322  * Increase default size for BIO buffering filter.
1323  * Compatibility fixes in some scripts.
1324
1325### Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]
1326
1327  * Security fix: change behavior of OpenSSL to avoid using
1328    environment variables when running as root.
1329  * Security fix: check the result of RSA-CRT to reduce the
1330    possibility of deducing the private key from an incorrectly
1331    calculated signature.
1332  * Security fix: prevent Bleichenbacher's DSA attack.
1333  * Security fix: Zero the premaster secret after deriving the
1334    master secret in DH ciphersuites.
1335  * Reimplement SSL_peek(), which had various problems.
1336  * Compatibility fix: the function des_encrypt() renamed to
1337    des_encrypt1() to avoid clashes with some Unixen libc.
1338  * Bug fixes for Win32, HP/UX and Irix.
1339  * Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
1340    memory checking routines.
1341  * Bug fixes for RSA operations in threaded environments.
1342  * Bug fixes in misc. openssl applications.
1343  * Remove a few potential memory leaks.
1344  * Add tighter checks of BIGNUM routines.
1345  * Shared library support has been reworked for generality.
1346  * More documentation.
1347  * New function BN_rand_range().
1348  * Add "-rand" option to openssl s_client and s_server.
1349
1350### Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]
1351
1352  * Some documentation for BIO and SSL libraries.
1353  * Enhanced chain verification using key identifiers.
1354  * New sign and verify options to 'dgst' application.
1355  * Support for DER and PEM encoded messages in 'smime' application.
1356  * New 'rsautl' application, low-level RSA utility.
1357  * MD4 now included.
1358  * Bugfix for SSL rollback padding check.
1359  * Support for external crypto devices [1].
1360  * Enhanced EVP interface.
1361
1362  [1] The support for external crypto devices is currently a separate
1363      distribution.  See the file README-Engine.md.
1364
1365### Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]
1366
1367  * Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
1368  * Shared library support for HPUX and Solaris-gcc
1369  * Support of Linux/IA64
1370  * Assembler support for Mingw32
1371  * New 'rand' application
1372  * New way to check for existence of algorithms from scripts
1373
1374### Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]
1375
1376  * S/MIME support in new 'smime' command
1377  * Documentation for the OpenSSL command line application
1378  * Automation of 'req' application
1379  * Fixes to make s_client, s_server work under Windows
1380  * Support for multiple fieldnames in SPKACs
1381  * New SPKAC command line utility and associated library functions
1382  * Options to allow passwords to be obtained from various sources
1383  * New public key PEM format and options to handle it
1384  * Many other fixes and enhancements to command line utilities
1385  * Usable certificate chain verification
1386  * Certificate purpose checking
1387  * Certificate trust settings
1388  * Support of authority information access extension
1389  * Extensions in certificate requests
1390  * Simplified X509 name and attribute routines
1391  * Initial (incomplete) support for international character sets
1392  * New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
1393  * Read only memory BIOs and simplified creation function
1394  * TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
1395    record; allow fragmentation and interleaving of handshake and other
1396    data
1397  * TLS/SSL code now "tolerates" MS SGC
1398  * Work around for Netscape client certificate hang bug
1399  * RSA_NULL option that removes RSA patent code but keeps other
1400    RSA functionality
1401  * Memory leak detection now allows applications to add extra information
1402    via a per-thread stack
1403  * PRNG robustness improved
1404  * EGD support
1405  * BIGNUM library bug fixes
1406  * Faster DSA parameter generation
1407  * Enhanced support for Alpha Linux
1408  * Experimental macOS support
1409
1410### Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]
1411
1412  * Transparent support for PKCS#8 format private keys: these are used
1413    by several software packages and are more secure than the standard
1414    form
1415  * PKCS#5 v2.0 implementation
1416  * Password callbacks have a new void * argument for application data
1417  * Avoid various memory leaks
1418  * New pipe-like BIO that allows using the SSL library when actual I/O
1419    must be handled by the application (BIO pair)
1420
1421### Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]
1422
1423  * Lots of enhancements and cleanups to the Configuration mechanism
1424  * RSA OEAP related fixes
1425  * Added "openssl ca -revoke" option for revoking a certificate
1426  * Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
1427  * Source tree cleanups: removed lots of obsolete files
1428  * Thawte SXNet, certificate policies and CRL distribution points
1429    extension support
1430  * Preliminary (experimental) S/MIME support
1431  * Support for ASN.1 UTF8String and VisibleString
1432  * Full integration of PKCS#12 code
1433  * Sparc assembler bignum implementation, optimized hash functions
1434  * Option to disable selected ciphers
1435
1436### Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]
1437
1438  * Fixed a security hole related to session resumption
1439  * Fixed RSA encryption routines for the p < q case
1440  * "ALL" in cipher lists now means "everything except NULL ciphers"
1441  * Support for Triple-DES CBCM cipher
1442  * Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
1443  * First support for new TLSv1 ciphers
1444  * Added a few new BIOs (syslog BIO, reliable BIO)
1445  * Extended support for DSA certificate/keys.
1446  * Extended support for Certificate Signing Requests (CSR)
1447  * Initial support for X.509v3 extensions
1448  * Extended support for compression inside the SSL record layer
1449  * Overhauled Win32 builds
1450  * Cleanups and fixes to the Big Number (BN) library
1451  * Support for ASN.1 GeneralizedTime
1452  * Splitted ASN.1 SETs from SEQUENCEs
1453  * ASN1 and PEM support for Netscape Certificate Sequences
1454  * Overhauled Perl interface
1455  * Lots of source tree cleanups.
1456  * Lots of memory leak fixes.
1457  * Lots of bug fixes.
1458
1459### Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]
1460
1461  * Integration of the popular NO_RSA/NO_DSA patches
1462  * Initial support for compression inside the SSL record layer
1463  * Added BIO proxy and filtering functionality
1464  * Extended Big Number (BN) library
1465  * Added RIPE MD160 message digest
1466  * Added support for RC2/64bit cipher
1467  * Extended ASN.1 parser routines
1468  * Adjustments of the source tree for CVS
1469  * Support for various new platforms
1470
1471<!-- Links -->
1472
1473[CVE-2024-0727]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-0727
1474[CVE-2023-6237]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-6237
1475[CVE-2023-6129]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-6129
1476[CVE-2023-5678]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-5678
1477[CVE-2023-5363]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-5363
1478[CVE-2023-4807]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-4807
1479[CVE-2023-3817]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-3817
1480[CVE-2023-3446]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-3446
1481[CVE-2023-2975]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-2975
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
1641