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