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