5 This file gives a brief overview of the major changes between each OpenSSL
6 release. For more details please read the CHANGES file.
8 Major changes between OpenSSL 1.1.1q and OpenSSL 1.1.1r [under development]
12 Major changes between OpenSSL 1.1.1p and OpenSSL 1.1.1q [5 Jul 2022]
14 o Fixed AES OCB failure to encrypt some bytes on 32-bit x86 platforms
17 Major changes between OpenSSL 1.1.1o and OpenSSL 1.1.1p [21 Jun 2022]
19 o Fixed additional bugs in the c_rehash script which was not properly
20 sanitising shell metacharacters to prevent command injection
23 Major changes between OpenSSL 1.1.1n and OpenSSL 1.1.1o [3 May 2022]
25 o Fixed a bug in the c_rehash script which was not properly sanitising
26 shell metacharacters to prevent command injection (CVE-2022-1292)
28 Major changes between OpenSSL 1.1.1m and OpenSSL 1.1.1n [15 Mar 2022]
30 o Fixed a bug in the BN_mod_sqrt() function that can cause it to loop
31 forever for non-prime moduli (CVE-2022-0778)
33 Major changes between OpenSSL 1.1.1l and OpenSSL 1.1.1m [14 Dec 2021]
37 Major changes between OpenSSL 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]
39 o Fixed an SM2 Decryption Buffer Overflow (CVE-2021-3711)
40 o Fixed various read buffer overruns processing ASN.1 strings (CVE-2021-3712)
42 Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]
44 o Fixed a problem with verifying a certificate chain when using the
45 X509_V_FLAG_X509_STRICT flag (CVE-2021-3450)
46 o Fixed an issue where an OpenSSL TLS server may crash if sent a
47 maliciously crafted renegotiation ClientHello message from a client
50 Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
52 o Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
53 function (CVE-2021-23841)
54 o Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
55 padding mode to correctly check for rollback attacks
56 o Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
57 EVP_DecryptUpdate functions (CVE-2021-23840)
58 o Fixed SRP_Calc_client_key so that it runs in constant time
60 Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]
62 o Fixed NULL pointer deref in GENERAL_NAME_cmp (CVE-2020-1971)
64 Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]
66 o Disallow explicit curve parameters in verifications chains when
67 X509_V_FLAG_X509_STRICT is used
68 o Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
70 o Oracle Developer Studio will start reporting deprecation warnings
72 Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]
74 o Fixed segmentation fault in SSL_check_chain() (CVE-2020-1967)
76 Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
78 o Revert the unexpected EOF reporting via SSL_ERROR_SSL
80 Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
82 o Fixed an overflow bug in the x64_64 Montgomery squaring procedure
83 used in exponentiation with 512-bit moduli (CVE-2019-1551)
84 o Properly detect unexpected EOF while reading in libssl and report
87 Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
89 o Fixed a fork protection issue (CVE-2019-1549)
90 o Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
92 o For built-in EC curves, ensure an EC_GROUP built from the curve name is
93 used even when parsing explicit parameters
94 o Compute ECC cofactors if not provided during EC_GROUP construction
96 o Early start up entropy quality from the DEVRANDOM seed source has been
97 improved for older Linux systems
98 o Correct the extended master secret constant on EBCDIC systems
99 o Use Windows installation paths in the mingw builds (CVE-2019-1552)
100 o Changed DH_check to accept parameters with order q and 2q subgroups
101 o Significantly reduce secure memory usage by the randomness pools
102 o Revert the DEVRANDOM_WAIT feature for Linux systems
104 Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]
106 o Prevent over long nonces in ChaCha20-Poly1305 (CVE-2019-1543)
108 Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]
110 o Change the info callback signals for the start and end of a post-handshake
111 message exchange in TLSv1.3.
112 o Fix a bug in DTLS over SCTP. This breaks interoperability with older versions
113 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.
115 Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
117 o Timing vulnerability in DSA signature generation (CVE-2018-0734)
118 o Timing vulnerability in ECDSA signature generation (CVE-2018-0735)
120 Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
122 o Support for TLSv1.3 added (see https://wiki.openssl.org/index.php/TLS1.3
123 for further important information). The TLSv1.3 implementation includes:
124 o Fully compliant implementation of RFC8446 (TLSv1.3) on by default
126 o Post-handshake authentication and key update
127 o Middlebox Compatibility Mode
129 o Support for all five RFC8446 ciphersuites
130 o RSA-PSS signature algorithms (backported to TLSv1.2)
131 o Configurable session ticket support
132 o Stateless server support
133 o Rewrite of the packet construction code for "safer" packet handling
134 o Rewrite of the extension handling code
135 o Complete rewrite of the OpenSSL random number generator to introduce the
136 following capabilities
137 o The default RAND method now utilizes an AES-CTR DRBG according to
138 NIST standard SP 800-90Ar1.
139 o Support for multiple DRBG instances with seed chaining.
140 o There is a public and private DRBG instance.
141 o The DRBG instances are fork-safe.
142 o Keep all global DRBG instances on the secure heap if it is enabled.
143 o The public and private DRBG instance are per thread for lock free
145 o Support for various new cryptographic algorithms including:
147 o SHA512/224 and SHA512/256
148 o EdDSA (both Ed25519 and Ed448) including X509 and TLS support
149 o X448 (adding to the existing X25519 support in 1.1.0)
155 o ARIA (including TLS support)
156 o Significant Side-Channel attack security improvements
157 o Add a new ClientHello callback to provide the ability to adjust the SSL
158 object at an early stage.
159 o Add 'Maximum Fragment Length' TLS extension negotiation and support
160 o A new STORE module, which implements a uniform and URI based reader of
161 stores that can contain keys, certificates, CRLs and numerous other
163 o Move the display of configuration data to configdata.pm.
164 o Allow GNU style "make variables" to be used with Configure.
165 o Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
166 o Rewrite of devcrypto engine
168 Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [under development]
170 o Client DoS due to large DH parameter (CVE-2018-0732)
171 o Cache timing vulnerability in RSA Key Generation (CVE-2018-0737)
173 Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [under development]
175 o Constructed ASN.1 types with a recursive definition could exceed the
176 stack (CVE-2018-0739)
177 o Incorrect CRYPTO_memcmp on HP-UX PA-RISC (CVE-2018-0733)
178 o rsaz_1024_mul_avx2 overflow bug on x86_64 (CVE-2017-3738)
180 Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
182 o bn_sqrx8x_internal carry bug on x86_64 (CVE-2017-3736)
183 o Malformed X.509 IPAddressFamily could cause OOB read (CVE-2017-3735)
185 Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
187 o config now recognises 64-bit mingw and chooses mingw64 instead of mingw
189 Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
191 o Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)
193 Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
195 o Truncated packet could crash via OOB read (CVE-2017-3731)
196 o Bad (EC)DHE parameters cause a client crash (CVE-2017-3730)
197 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2017-3732)
199 Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
201 o ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
202 o CMS Null dereference (CVE-2016-7053)
203 o Montgomery multiplication may produce incorrect results (CVE-2016-7055)
205 Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
207 o Fix Use After Free for large message sizes (CVE-2016-6309)
209 Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
211 o OCSP Status Request extension unbounded memory growth (CVE-2016-6304)
212 o SSL_peek() hang on empty record (CVE-2016-6305)
213 o Excessive allocation of memory in tls_get_message_header()
215 o Excessive allocation of memory in dtls1_preprocess_fragment()
218 Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
220 o Copyright text was shrunk to a boilerplate that points to the license
221 o "shared" builds are now the default when possible
222 o Added support for "pipelining"
223 o Added the AFALG engine
224 o New threading API implemented
225 o Support for ChaCha20 and Poly1305 added to libcrypto and libssl
226 o Support for extended master secret
228 o Reworked test suite, now based on perl, Test::Harness and Test::More
229 o *Most* libcrypto and libssl public structures were made opaque,
231 BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
232 DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
233 BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
234 EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
235 X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
236 X509_LOOKUP, X509_LOOKUP_METHOD
237 o libssl internal structures made opaque
238 o SSLv2 support removed
239 o Kerberos ciphersuite support removed
240 o RC4 removed from DEFAULT ciphersuites in libssl
241 o 40 and 56 bit cipher support removed from libssl
242 o All public header files moved to include/openssl, no more symlinking
243 o SSL/TLS state machine, version negotiation and record layer rewritten
244 o EC revision: now operations use new EC_KEY_METHOD.
245 o Support for OCB mode added to libcrypto
246 o Support for asynchronous crypto operations added to libcrypto and libssl
247 o Deprecated interfaces can now be disabled at build time either
248 relative to the latest release via the "no-deprecated" Configure
249 argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
250 o Application software can be compiled with -DOPENSSL_API_COMPAT=version
251 to ensure that features deprecated in that version are not exposed.
252 o Support for RFC6698/RFC7671 DANE TLSA peer authentication
253 o Change of Configure to use --prefix as the main installation
254 directory location rather than --openssldir. The latter becomes
255 the directory for certs, private key and openssl.cnf exclusively.
256 o Reworked BIO networking library, with full support for IPv6.
257 o New "unified" build system
258 o New security levels
259 o Support for scrypt algorithm
261 o Extended SSL_CONF support using configuration files
262 o KDF algorithm support. Implement TLS PRF as a KDF.
263 o Support for Certificate Transparency
266 Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
268 o Prevent padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
269 o Fix EVP_EncodeUpdate overflow (CVE-2016-2105)
270 o Fix EVP_EncryptUpdate overflow (CVE-2016-2106)
271 o Prevent ASN.1 BIO excessive memory allocation (CVE-2016-2109)
272 o EBCDIC overread (CVE-2016-2176)
273 o Modify behavior of ALPN to invoke callback after SNI/servername
274 callback, such that updates to the SSL_CTX affect ALPN.
275 o Remove LOW from the DEFAULT cipher list. This removes singles DES from
277 o Only remove the SSLv2 methods with the no-ssl2-method option.
279 Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
281 o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
282 o Disable SSLv2 default build, default negotiation and weak ciphers
284 o Fix a double-free in DSA code (CVE-2016-0705)
285 o Disable SRP fake user seed to address a server memory leak
287 o Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
289 o Fix memory issues in BIO_*printf functions (CVE-2016-0799)
290 o Fix side channel attack on modular exponentiation (CVE-2016-0702)
292 Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
294 o DH small subgroups (CVE-2016-0701)
295 o SSLv2 doesn't block disabled ciphers (CVE-2015-3197)
297 Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
299 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2015-3193)
300 o Certificate verify crash with missing PSS parameter (CVE-2015-3194)
301 o X509_ATTRIBUTE memory leak (CVE-2015-3195)
302 o Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
303 o In DSA_generate_parameters_ex, if the provided seed is too short,
306 Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
308 o Alternate chains certificate forgery (CVE-2015-1793)
309 o Race condition handling PSK identify hint (CVE-2015-3196)
311 Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
313 o Fix HMAC ABI incompatibility
315 Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
317 o Malformed ECParameters causes infinite loop (CVE-2015-1788)
318 o Exploitable out-of-bounds read in X509_cmp_time (CVE-2015-1789)
319 o PKCS7 crash with missing EnvelopedContent (CVE-2015-1790)
320 o CMS verify infinite loop with unknown hash function (CVE-2015-1792)
321 o Race condition handling NewSessionTicket (CVE-2015-1791)
323 Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
325 o OpenSSL 1.0.2 ClientHello sigalgs DoS fix (CVE-2015-0291)
326 o Multiblock corrupted pointer fix (CVE-2015-0290)
327 o Segmentation fault in DTLSv1_listen fix (CVE-2015-0207)
328 o Segmentation fault in ASN1_TYPE_cmp fix (CVE-2015-0286)
329 o Segmentation fault for invalid PSS parameters fix (CVE-2015-0208)
330 o ASN.1 structure reuse memory corruption fix (CVE-2015-0287)
331 o PKCS7 NULL pointer dereferences fix (CVE-2015-0289)
332 o DoS via reachable assert in SSLv2 servers fix (CVE-2015-0293)
333 o Empty CKE with client auth and DHE fix (CVE-2015-1787)
334 o Handshake with unseeded PRNG fix (CVE-2015-0285)
335 o Use After Free following d2i_ECPrivatekey error fix (CVE-2015-0209)
336 o X509_to_X509_REQ NULL pointer deref fix (CVE-2015-0288)
337 o Removed the export ciphers from the DEFAULT ciphers
339 Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]:
341 o Suite B support for TLS 1.2 and DTLS 1.2
342 o Support for DTLS 1.2
343 o TLS automatic EC curve selection.
344 o API to set TLS supported signature algorithms and curves
345 o SSL_CONF configuration API.
346 o TLS Brainpool support.
348 o CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
350 Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
352 o Build fixes for the Windows and OpenVMS platforms
354 Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
356 o Fix for CVE-2014-3571
357 o Fix for CVE-2015-0206
358 o Fix for CVE-2014-3569
359 o Fix for CVE-2014-3572
360 o Fix for CVE-2015-0204
361 o Fix for CVE-2015-0205
362 o Fix for CVE-2014-8275
363 o Fix for CVE-2014-3570
365 Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
367 o Fix for CVE-2014-3513
368 o Fix for CVE-2014-3567
369 o Mitigation for CVE-2014-3566 (SSL protocol vulnerability)
370 o Fix for CVE-2014-3568
372 Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
374 o Fix for CVE-2014-3512
375 o Fix for CVE-2014-3511
376 o Fix for CVE-2014-3510
377 o Fix for CVE-2014-3507
378 o Fix for CVE-2014-3506
379 o Fix for CVE-2014-3505
380 o Fix for CVE-2014-3509
381 o Fix for CVE-2014-5139
382 o Fix for CVE-2014-3508
384 Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
386 o Fix for CVE-2014-0224
387 o Fix for CVE-2014-0221
388 o Fix for CVE-2014-0198
389 o Fix for CVE-2014-0195
390 o Fix for CVE-2014-3470
391 o Fix for CVE-2010-5298
393 Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
395 o Fix for CVE-2014-0160
396 o Add TLS padding extension workaround for broken servers.
397 o Fix for CVE-2014-0076
399 Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
401 o Don't include gmt_unix_time in TLS server and client random values
402 o Fix for TLS record tampering bug CVE-2013-4353
403 o Fix for TLS version checking bug CVE-2013-6449
404 o Fix for DTLS retransmission bug CVE-2013-6450
406 Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]:
408 o Corrected fix for CVE-2013-0169
410 Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]:
412 o Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
413 o Include the fips configuration module.
414 o Fix OCSP bad key DoS attack CVE-2013-0166
415 o Fix for SSL/TLS/DTLS CBC plaintext recovery attack CVE-2013-0169
416 o Fix for TLS AESNI record handling flaw CVE-2012-2686
418 Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]:
420 o Fix TLS/DTLS record length checking bug CVE-2012-2333
421 o Don't attempt to use non-FIPS composite ciphers in FIPS mode.
423 Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]:
425 o Fix compilation error on non-x86 platforms.
426 o Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
427 o Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
429 Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]:
431 o Fix for ASN1 overflow bug CVE-2012-2110
432 o Workarounds for some servers that hang on long client hellos.
433 o Fix SEGV in AES code.
435 Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]:
437 o TLS/DTLS heartbeat support.
439 o RFC 5705 TLS key material exporter.
440 o RFC 5764 DTLS-SRTP negotiation.
441 o Next Protocol Negotiation.
442 o PSS signatures in certificates, requests and CRLs.
443 o Support for password based recipient info for CMS.
444 o Support TLS v1.2 and TLS v1.1.
445 o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
448 Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]:
450 o Fix for CMS/PKCS#7 MMA CVE-2012-0884
451 o Corrected fix for CVE-2011-4619
452 o Various DTLS fixes.
454 Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]:
456 o Fix for DTLS DoS issue CVE-2012-0050
458 Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]:
460 o Fix for DTLS plaintext recovery attack CVE-2011-4108
461 o Clear block padding bytes of SSL 3.0 records CVE-2011-4576
462 o Only allow one SGC handshake restart for SSL/TLS CVE-2011-4619
463 o Check parameters are not NULL in GOST ENGINE CVE-2012-0027
464 o Check for malformed RFC3779 data CVE-2011-4577
466 Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]:
468 o Fix for CRL vulnerability issue CVE-2011-3207
469 o Fix for ECDH crashes CVE-2011-3210
470 o Protection against EC timing attacks.
471 o Support ECDH ciphersuites for certificates using SHA2 algorithms.
472 o Various DTLS fixes.
474 Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]:
476 o Fix for security issue CVE-2011-0014
478 Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]:
480 o Fix for security issue CVE-2010-4180
481 o Fix for CVE-2010-4252
482 o Fix mishandling of absent EC point format extension.
483 o Fix various platform compilation issues.
484 o Corrected fix for security issue CVE-2010-3864.
486 Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]:
488 o Fix for security issue CVE-2010-3864.
489 o Fix for CVE-2010-2939
490 o Fix WIN32 build system for GOST ENGINE.
492 Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]:
494 o Fix for security issue CVE-2010-1633.
495 o GOST MAC and CFB fixes.
497 Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]:
499 o RFC3280 path validation: sufficient to process PKITS tests.
500 o Integrated support for PVK files and keyblobs.
501 o Change default private key format to PKCS#8.
502 o CMS support: able to process all examples in RFC4134
503 o Streaming ASN1 encode support for PKCS#7 and CMS.
504 o Multiple signer and signer add support for PKCS#7 and CMS.
505 o ASN1 printing support.
506 o Whirlpool hash algorithm added.
507 o RFC3161 time stamp support.
508 o New generalised public key API supporting ENGINE based algorithms.
509 o New generalised public key API utilities.
510 o New ENGINE supporting GOST algorithms.
511 o SSL/TLS GOST ciphersuite support.
512 o PKCS#7 and CMS GOST support.
513 o RFC4279 PSK ciphersuite support.
514 o Supported points format extension for ECC ciphersuites.
515 o ecdsa-with-SHA224/256/384/512 signature types.
516 o dsa-with-SHA224 and dsa-with-SHA256 signature types.
517 o Opaque PRF Input TLS extension support.
518 o Updated time routines to avoid OS limitations.
520 Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]:
522 o CFB cipher definition fixes.
523 o Fix security issues CVE-2010-0740 and CVE-2010-0433.
525 Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]:
527 o Cipher definition fixes.
528 o Workaround for slow RAND_poll() on some WIN32 versions.
529 o Remove MD2 from algorithm tables.
530 o SPKAC handling fixes.
531 o Support for RFC5746 TLS renegotiation extension.
532 o Compression memory leak fixed.
533 o Compression session resumption fixed.
534 o Ticket and SNI coexistence fixes.
535 o Many fixes to DTLS handling.
537 Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]:
539 o Temporary work around for CVE-2009-3555: disable renegotiation.
541 Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]:
543 o Fix various build issues.
544 o Fix security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
546 Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]:
548 o Fix security issue (CVE-2008-5077)
549 o Merge FIPS 140-2 branch code.
551 Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]:
553 o CryptoAPI ENGINE support.
554 o Various precautionary measures.
555 o Fix for bugs affecting certificate request creation.
556 o Support for local machine keyset attribute in PKCS#12 files.
558 Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]:
560 o Backport of CMS functionality to 0.9.8.
561 o Fixes for bugs introduced with 0.9.8f.
563 Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]:
565 o Add gcc 4.2 support.
566 o Add support for AES and SSE2 assembly language optimization
568 o Support for RFC4507bis and server name extensions if explicitly
569 selected at compile time.
571 o RFC4507bis support.
572 o TLS Extensions support.
574 Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]:
576 o Various ciphersuite selection fixes.
579 Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]:
581 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
582 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
583 o Changes to ciphersuite selection algorithm
585 Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]:
587 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
588 o New cipher Camellia
590 Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]:
592 o Cipher string fixes.
593 o Fixes for VC++ 2005.
594 o Updated ECC cipher suite support.
595 o New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
596 o Zlib compression usage fixes.
597 o Built in dynamic engine compilation support on Win32.
598 o Fixes auto dynamic engine loading in Win32.
600 Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]:
602 o Fix potential SSL 2.0 rollback, CVE-2005-2969
603 o Extended Windows CE support
605 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]:
607 o Major work on the BIGNUM library for higher efficiency and to
608 make operations more streamlined and less contradictory. This
609 is the result of a major audit of the BIGNUM library.
610 o Addition of BIGNUM functions for fields GF(2^m) and NIST
611 curves, to support the Elliptic Crypto functions.
612 o Major work on Elliptic Crypto; ECDH and ECDSA added, including
613 the use through EVP, X509 and ENGINE.
614 o New ASN.1 mini-compiler that's usable through the OpenSSL
616 o Added support for ASN.1 indefinite length constructed encoding.
617 o New PKCS#12 'medium level' API to manipulate PKCS#12 files.
618 o Complete rework of shared library construction and linking
619 programs with shared or static libraries, through a separate
621 o Rework of the passing of parameters from one Makefile to another.
622 o Changed ENGINE framework to load dynamic engine modules
623 automatically from specifically given directories.
624 o New structure and ASN.1 functions for CertificatePair.
625 o Changed the ZLIB compression method to be stateful.
626 o Changed the key-generation and primality testing "progress"
627 mechanism to take a structure that contains the ticker
628 function and an argument.
629 o New engine module: GMP (performs private key exponentiation).
630 o New engine module: VIA PadLOck ACE extension in VIA C3
632 o Added support for IPv6 addresses in certificate extensions.
633 See RFC 1884, section 2.2.
634 o Added support for certificate policy mappings, policy
635 constraints and name constraints.
636 o Added support for multi-valued AVAs in the OpenSSL
638 o Added support for multiple certificates with the same subject
639 in the 'openssl ca' index file.
640 o Make it possible to create self-signed certificates using
641 'openssl ca -selfsign'.
642 o Make it possible to generate a serial number file with
643 'openssl ca -create_serial'.
644 o New binary search functions with extended functionality.
646 o New STORE structure and library to provide an interface to all
647 sorts of data repositories. Supports storage of public and
648 private keys, certificates, CRLs, numbers and arbitrary blobs.
649 This library is unfortunately unfinished and unused within
651 o New control functions for the error stack.
652 o Changed the PKCS#7 library to support one-pass S/MIME
654 o Added the possibility to compile without old deprecated
655 functionality with the OPENSSL_NO_DEPRECATED macro or the
656 'no-deprecated' argument to the config and Configure scripts.
657 o Constification of all ASN.1 conversion functions, and other
659 o Improved platform support for PowerPC.
660 o New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
661 o New X509_VERIFY_PARAM structure to support parameterisation
662 of X.509 path validation.
663 o Major overhaul of RC4 performance on Intel P4, IA-64 and
665 o Changed the Configure script to have some algorithms disabled
666 by default. Those can be explicitly enabled with the new
667 argument form 'enable-xxx'.
668 o Change the default digest in 'openssl' commands from MD5 to
670 o Added support for DTLS.
671 o New BIGNUM blinding.
672 o Added support for the RSA-PSS encryption scheme
673 o Added support for the RSA X.931 padding.
674 o Added support for BSD sockets on NetWare.
675 o Added support for files larger than 2GB.
676 o Added initial support for Win64.
677 o Added alternate pkg-config files.
679 Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]:
681 o FIPS 1.1.1 module linking.
682 o Various ciphersuite selection fixes.
684 Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]:
686 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
687 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
689 Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]:
691 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
693 Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]:
695 o Visual C++ 2005 fixes.
696 o Update Windows build system for FIPS.
698 Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]:
700 o Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
702 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]:
704 o Fix SSL 2.0 Rollback, CVE-2005-2969
705 o Allow use of fixed-length exponent on DSA signing
706 o Default fixed-window RSA, DSA, DH private-key operations
708 Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]:
710 o More compilation issues fixed.
711 o Adaptation to more modern Kerberos API.
712 o Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
713 o Enhanced x86_64 assembler BIGNUM module.
714 o More constification.
715 o Added processing of proxy certificates (RFC 3820).
717 Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]:
719 o Several compilation issues fixed.
720 o Many memory allocation failure checks added.
721 o Improved comparison of X509 Name type.
722 o Mandatory basic checks on certificates.
723 o Performance improvements.
725 Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]:
727 o Fix race condition in CRL checking code.
728 o Fixes to PKCS#7 (S/MIME) code.
730 Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]:
732 o Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
733 o Security: Fix null-pointer assignment in do_change_cipher_spec()
734 o Allow multiple active certificates with same subject in CA index
735 o Multiple X509 verification fixes
736 o Speed up HMAC and other operations
738 Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]:
740 o Security: fix various ASN1 parsing bugs.
741 o New -ignore_err option to OCSP utility.
742 o Various interop and bug fixes in S/MIME code.
743 o SSL/TLS protocol fix for unrequested client certificates.
745 Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]:
747 o Security: counter the Klima-Pokorny-Rosa extension of
748 Bleichbacher's attack
749 o Security: make RSA blinding default.
750 o Configuration: Irix fixes, AIX fixes, better mingw support.
751 o Support for new platforms: linux-ia64-ecc.
752 o Build: shared library support fixes.
753 o ASN.1: treat domainComponent correctly.
754 o Documentation: fixes and additions.
756 Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]:
758 o Security: Important security related bugfixes.
759 o Enhanced compatibility with MIT Kerberos.
760 o Can be built without the ENGINE framework.
761 o IA32 assembler enhancements.
762 o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
763 o Configuration: the no-err option now works properly.
764 o SSL/TLS: now handles manual certificate chain building.
765 o SSL/TLS: certain session ID malfunctions corrected.
767 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]:
769 o New library section OCSP.
770 o Complete rewrite of ASN1 code.
771 o CRL checking in verify code and openssl utility.
772 o Extension copying in 'ca' utility.
773 o Flexible display options in 'ca' utility.
774 o Provisional support for international characters with UTF8.
775 o Support for external crypto devices ('engine') is no longer
776 a separate distribution.
777 o New elliptic curve library section.
778 o New AES (Rijndael) library section.
779 o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
780 Linux x86_64, Linux 64-bit on Sparc v9
781 o Extended support for some platforms: VxWorks
782 o Enhanced support for shared libraries.
783 o Now only builds PIC code when shared library support is requested.
784 o Support for pkg-config.
785 o Lots of new manuals.
786 o Makes symbolic links to or copies of manuals to cover all described
788 o Change DES API to clean up the namespace (some applications link also
789 against libdes providing similar functions having the same name).
790 Provide macros for backward compatibility (will be removed in the
792 o Unify handling of cryptographic algorithms (software and engine)
793 to be available via EVP routines for asymmetric and symmetric ciphers.
794 o NCONF: new configuration handling routines.
795 o Change API to use more 'const' modifiers to improve error checking
797 o Finally remove references to RSAref.
798 o Reworked parts of the BIGNUM code.
799 o Support for new engines: Broadcom ubsec, Accelerated Encryption
800 Processing, IBM 4758.
801 o A few new engines added in the demos area.
802 o Extended and corrected OID (object identifier) table.
803 o PRNG: query at more locations for a random device, automatic query for
804 EGD style random sources at several locations.
805 o SSL/TLS: allow optional cipher choice according to server's preference.
806 o SSL/TLS: allow server to explicitly set new session ids.
807 o SSL/TLS: support Kerberos cipher suites (RFC2712).
808 Only supports MIT Kerberos for now.
809 o SSL/TLS: allow more precise control of renegotiations and sessions.
810 o SSL/TLS: add callback to retrieve SSL/TLS messages.
811 o SSL/TLS: support AES cipher suites (RFC3268).
813 Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]:
815 o Security: fix various ASN1 parsing bugs.
816 o SSL/TLS protocol fix for unrequested client certificates.
818 Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]:
820 o Security: counter the Klima-Pokorny-Rosa extension of
821 Bleichbacher's attack
822 o Security: make RSA blinding default.
823 o Build: shared library support fixes.
825 Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]:
827 o Important security related bugfixes.
829 Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]:
831 o New configuration targets for Tandem OSS and A/UX.
832 o New OIDs for Microsoft attributes.
833 o Better handling of SSL session caching.
834 o Better comparison of distinguished names.
835 o Better handling of shared libraries in a mixed GNU/non-GNU environment.
836 o Support assembler code with Borland C.
837 o Fixes for length problems.
838 o Fixes for uninitialised variables.
839 o Fixes for memory leaks, some unusual crashes and some race conditions.
840 o Fixes for smaller building problems.
841 o Updates of manuals, FAQ and other instructive documents.
843 Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]:
845 o Important building fixes on Unix.
847 Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]:
849 o Various important bugfixes.
851 Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]:
853 o Important security related bugfixes.
854 o Various SSL/TLS library bugfixes.
856 Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]:
858 o Various SSL/TLS library bugfixes.
859 o Fix DH parameter generation for 'non-standard' generators.
861 Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]:
863 o Various SSL/TLS library bugfixes.
864 o BIGNUM library fixes.
865 o RSA OAEP and random number generation fixes.
866 o Object identifiers corrected and added.
867 o Add assembler BN routines for IA64.
868 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
869 MIPS Linux; shared library support for Irix, HP-UX.
870 o Add crypto accelerator support for AEP, Baltimore SureWare,
871 Broadcom and Cryptographic Appliance's keyserver
872 [in 0.9.6c-engine release].
874 Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]:
876 o Security fix: PRNG improvements.
877 o Security fix: RSA OAEP check.
878 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
880 o MIPS bug fix in BIGNUM.
881 o Bug fix in "openssl enc".
882 o Bug fix in X.509 printing routine.
883 o Bug fix in DSA verification routine and DSA S/MIME verification.
884 o Bug fix to make PRNG thread-safe.
885 o Bug fix in RAND_file_name().
886 o Bug fix in compatibility mode trust settings.
887 o Bug fix in blowfish EVP.
888 o Increase default size for BIO buffering filter.
889 o Compatibility fixes in some scripts.
891 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]:
893 o Security fix: change behavior of OpenSSL to avoid using
894 environment variables when running as root.
895 o Security fix: check the result of RSA-CRT to reduce the
896 possibility of deducing the private key from an incorrectly
897 calculated signature.
898 o Security fix: prevent Bleichenbacher's DSA attack.
899 o Security fix: Zero the premaster secret after deriving the
900 master secret in DH ciphersuites.
901 o Reimplement SSL_peek(), which had various problems.
902 o Compatibility fix: the function des_encrypt() renamed to
903 des_encrypt1() to avoid clashes with some Unixen libc.
904 o Bug fixes for Win32, HP/UX and Irix.
905 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
906 memory checking routines.
907 o Bug fixes for RSA operations in threaded environments.
908 o Bug fixes in misc. openssl applications.
909 o Remove a few potential memory leaks.
910 o Add tighter checks of BIGNUM routines.
911 o Shared library support has been reworked for generality.
912 o More documentation.
913 o New function BN_rand_range().
914 o Add "-rand" option to openssl s_client and s_server.
916 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]:
918 o Some documentation for BIO and SSL libraries.
919 o Enhanced chain verification using key identifiers.
920 o New sign and verify options to 'dgst' application.
921 o Support for DER and PEM encoded messages in 'smime' application.
922 o New 'rsautl' application, low level RSA utility.
924 o Bugfix for SSL rollback padding check.
925 o Support for external crypto devices [1].
926 o Enhanced EVP interface.
928 [1] The support for external crypto devices is currently a separate
929 distribution. See the file README.ENGINE.
931 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]:
933 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
934 o Shared library support for HPUX and Solaris-gcc
935 o Support of Linux/IA64
936 o Assembler support for Mingw32
937 o New 'rand' application
938 o New way to check for existence of algorithms from scripts
940 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]:
942 o S/MIME support in new 'smime' command
943 o Documentation for the OpenSSL command line application
944 o Automation of 'req' application
945 o Fixes to make s_client, s_server work under Windows
946 o Support for multiple fieldnames in SPKACs
947 o New SPKAC command line utility and associated library functions
948 o Options to allow passwords to be obtained from various sources
949 o New public key PEM format and options to handle it
950 o Many other fixes and enhancements to command line utilities
951 o Usable certificate chain verification
952 o Certificate purpose checking
953 o Certificate trust settings
954 o Support of authority information access extension
955 o Extensions in certificate requests
956 o Simplified X509 name and attribute routines
957 o Initial (incomplete) support for international character sets
958 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
959 o Read only memory BIOs and simplified creation function
960 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
961 record; allow fragmentation and interleaving of handshake and other
963 o TLS/SSL code now "tolerates" MS SGC
964 o Work around for Netscape client certificate hang bug
965 o RSA_NULL option that removes RSA patent code but keeps other
967 o Memory leak detection now allows applications to add extra information
968 via a per-thread stack
969 o PRNG robustness improved
971 o BIGNUM library bug fixes
972 o Faster DSA parameter generation
973 o Enhanced support for Alpha Linux
974 o Experimental MacOS support
976 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]:
978 o Transparent support for PKCS#8 format private keys: these are used
979 by several software packages and are more secure than the standard
981 o PKCS#5 v2.0 implementation
982 o Password callbacks have a new void * argument for application data
983 o Avoid various memory leaks
984 o New pipe-like BIO that allows using the SSL library when actual I/O
985 must be handled by the application (BIO pair)
987 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]:
988 o Lots of enhancements and cleanups to the Configuration mechanism
989 o RSA OEAP related fixes
990 o Added `openssl ca -revoke' option for revoking a certificate
991 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
992 o Source tree cleanups: removed lots of obsolete files
993 o Thawte SXNet, certificate policies and CRL distribution points
995 o Preliminary (experimental) S/MIME support
996 o Support for ASN.1 UTF8String and VisibleString
997 o Full integration of PKCS#12 code
998 o Sparc assembler bignum implementation, optimized hash functions
999 o Option to disable selected ciphers
1001 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]:
1002 o Fixed a security hole related to session resumption
1003 o Fixed RSA encryption routines for the p < q case
1004 o "ALL" in cipher lists now means "everything except NULL ciphers"
1005 o Support for Triple-DES CBCM cipher
1006 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
1007 o First support for new TLSv1 ciphers
1008 o Added a few new BIOs (syslog BIO, reliable BIO)
1009 o Extended support for DSA certificate/keys.
1010 o Extended support for Certificate Signing Requests (CSR)
1011 o Initial support for X.509v3 extensions
1012 o Extended support for compression inside the SSL record layer
1013 o Overhauled Win32 builds
1014 o Cleanups and fixes to the Big Number (BN) library
1015 o Support for ASN.1 GeneralizedTime
1016 o Splitted ASN.1 SETs from SEQUENCEs
1017 o ASN1 and PEM support for Netscape Certificate Sequences
1018 o Overhauled Perl interface
1019 o Lots of source tree cleanups.
1020 o Lots of memory leak fixes.
1021 o Lots of bug fixes.
1023 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]:
1024 o Integration of the popular NO_RSA/NO_DSA patches
1025 o Initial support for compression inside the SSL record layer
1026 o Added BIO proxy and filtering functionality
1027 o Extended Big Number (BN) library
1028 o Added RIPE MD160 message digest
1029 o Added support for RC2/64bit cipher
1030 o Extended ASN.1 parser routines
1031 o Adjustments of the source tree for CVS
1032 o Support for various new platforms