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