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 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]
10 o Fixed an SM2 Decryption Buffer Overflow (CVE-2021-3711)
11 o Fixed various read buffer overruns processing ASN.1 strings (CVE-2021-3712)
13 Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]
15 o Fixed a problem with verifying a certificate chain when using the
16 X509_V_FLAG_X509_STRICT flag (CVE-2021-3450)
17 o Fixed an issue where an OpenSSL TLS server may crash if sent a
18 maliciously crafted renegotiation ClientHello message from a client
21 Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
23 o Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
24 function (CVE-2021-23841)
25 o Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
26 padding mode to correctly check for rollback attacks
27 o Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
28 EVP_DecryptUpdate functions (CVE-2021-23840)
29 o Fixed SRP_Calc_client_key so that it runs in constant time
31 Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]
33 o Fixed NULL pointer deref in GENERAL_NAME_cmp (CVE-2020-1971)
35 Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]
37 o Disallow explicit curve parameters in verifications chains when
38 X509_V_FLAG_X509_STRICT is used
39 o Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
41 o Oracle Developer Studio will start reporting deprecation warnings
43 Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]
45 o Fixed segmentation fault in SSL_check_chain() (CVE-2020-1967)
47 Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]
49 o Revert the unexpected EOF reporting via SSL_ERROR_SSL
51 Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]
53 o Fixed an overflow bug in the x64_64 Montgomery squaring procedure
54 used in exponentiation with 512-bit moduli (CVE-2019-1551)
55 o Properly detect unexpected EOF while reading in libssl and report
58 Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]
60 o Fixed a fork protection issue (CVE-2019-1549)
61 o Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
63 o For built-in EC curves, ensure an EC_GROUP built from the curve name is
64 used even when parsing explicit parameters
65 o Compute ECC cofactors if not provided during EC_GROUP construction
67 o Early start up entropy quality from the DEVRANDOM seed source has been
68 improved for older Linux systems
69 o Correct the extended master secret constant on EBCDIC systems
70 o Use Windows installation paths in the mingw builds (CVE-2019-1552)
71 o Changed DH_check to accept parameters with order q and 2q subgroups
72 o Significantly reduce secure memory usage by the randomness pools
73 o Revert the DEVRANDOM_WAIT feature for Linux systems
75 Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]
77 o Prevent over long nonces in ChaCha20-Poly1305 (CVE-2019-1543)
79 Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]
81 o Change the info callback signals for the start and end of a post-handshake
82 message exchange in TLSv1.3.
83 o Fix a bug in DTLS over SCTP. This breaks interoperability with older versions
84 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.
86 Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
88 o Timing vulnerability in DSA signature generation (CVE-2018-0734)
89 o Timing vulnerability in ECDSA signature generation (CVE-2018-0735)
91 Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
93 o Support for TLSv1.3 added (see https://wiki.openssl.org/index.php/TLS1.3
94 for further important information). The TLSv1.3 implementation includes:
95 o Fully compliant implementation of RFC8446 (TLSv1.3) on by default
97 o Post-handshake authentication and key update
98 o Middlebox Compatibility Mode
100 o Support for all five RFC8446 ciphersuites
101 o RSA-PSS signature algorithms (backported to TLSv1.2)
102 o Configurable session ticket support
103 o Stateless server support
104 o Rewrite of the packet construction code for "safer" packet handling
105 o Rewrite of the extension handling code
106 o Complete rewrite of the OpenSSL random number generator to introduce the
107 following capabilities
108 o The default RAND method now utilizes an AES-CTR DRBG according to
109 NIST standard SP 800-90Ar1.
110 o Support for multiple DRBG instances with seed chaining.
111 o There is a public and private DRBG instance.
112 o The DRBG instances are fork-safe.
113 o Keep all global DRBG instances on the secure heap if it is enabled.
114 o The public and private DRBG instance are per thread for lock free
116 o Support for various new cryptographic algorithms including:
118 o SHA512/224 and SHA512/256
119 o EdDSA (both Ed25519 and Ed448) including X509 and TLS support
120 o X448 (adding to the existing X25519 support in 1.1.0)
126 o ARIA (including TLS support)
127 o Significant Side-Channel attack security improvements
128 o Add a new ClientHello callback to provide the ability to adjust the SSL
129 object at an early stage.
130 o Add 'Maximum Fragment Length' TLS extension negotiation and support
131 o A new STORE module, which implements a uniform and URI based reader of
132 stores that can contain keys, certificates, CRLs and numerous other
134 o Move the display of configuration data to configdata.pm.
135 o Allow GNU style "make variables" to be used with Configure.
136 o Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
137 o Rewrite of devcrypto engine
139 Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [under development]
141 o Client DoS due to large DH parameter (CVE-2018-0732)
142 o Cache timing vulnerability in RSA Key Generation (CVE-2018-0737)
144 Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [under development]
146 o Constructed ASN.1 types with a recursive definition could exceed the
147 stack (CVE-2018-0739)
148 o Incorrect CRYPTO_memcmp on HP-UX PA-RISC (CVE-2018-0733)
149 o rsaz_1024_mul_avx2 overflow bug on x86_64 (CVE-2017-3738)
151 Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
153 o bn_sqrx8x_internal carry bug on x86_64 (CVE-2017-3736)
154 o Malformed X.509 IPAddressFamily could cause OOB read (CVE-2017-3735)
156 Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
158 o config now recognises 64-bit mingw and chooses mingw64 instead of mingw
160 Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
162 o Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)
164 Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
166 o Truncated packet could crash via OOB read (CVE-2017-3731)
167 o Bad (EC)DHE parameters cause a client crash (CVE-2017-3730)
168 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2017-3732)
170 Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
172 o ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
173 o CMS Null dereference (CVE-2016-7053)
174 o Montgomery multiplication may produce incorrect results (CVE-2016-7055)
176 Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
178 o Fix Use After Free for large message sizes (CVE-2016-6309)
180 Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
182 o OCSP Status Request extension unbounded memory growth (CVE-2016-6304)
183 o SSL_peek() hang on empty record (CVE-2016-6305)
184 o Excessive allocation of memory in tls_get_message_header()
186 o Excessive allocation of memory in dtls1_preprocess_fragment()
189 Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
191 o Copyright text was shrunk to a boilerplate that points to the license
192 o "shared" builds are now the default when possible
193 o Added support for "pipelining"
194 o Added the AFALG engine
195 o New threading API implemented
196 o Support for ChaCha20 and Poly1305 added to libcrypto and libssl
197 o Support for extended master secret
199 o Reworked test suite, now based on perl, Test::Harness and Test::More
200 o *Most* libcrypto and libssl public structures were made opaque,
202 BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
203 DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
204 BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
205 EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
206 X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
207 X509_LOOKUP, X509_LOOKUP_METHOD
208 o libssl internal structures made opaque
209 o SSLv2 support removed
210 o Kerberos ciphersuite support removed
211 o RC4 removed from DEFAULT ciphersuites in libssl
212 o 40 and 56 bit cipher support removed from libssl
213 o All public header files moved to include/openssl, no more symlinking
214 o SSL/TLS state machine, version negotiation and record layer rewritten
215 o EC revision: now operations use new EC_KEY_METHOD.
216 o Support for OCB mode added to libcrypto
217 o Support for asynchronous crypto operations added to libcrypto and libssl
218 o Deprecated interfaces can now be disabled at build time either
219 relative to the latest release via the "no-deprecated" Configure
220 argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
221 o Application software can be compiled with -DOPENSSL_API_COMPAT=version
222 to ensure that features deprecated in that version are not exposed.
223 o Support for RFC6698/RFC7671 DANE TLSA peer authentication
224 o Change of Configure to use --prefix as the main installation
225 directory location rather than --openssldir. The latter becomes
226 the directory for certs, private key and openssl.cnf exclusively.
227 o Reworked BIO networking library, with full support for IPv6.
228 o New "unified" build system
229 o New security levels
230 o Support for scrypt algorithm
232 o Extended SSL_CONF support using configuration files
233 o KDF algorithm support. Implement TLS PRF as a KDF.
234 o Support for Certificate Transparency
237 Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
239 o Prevent padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
240 o Fix EVP_EncodeUpdate overflow (CVE-2016-2105)
241 o Fix EVP_EncryptUpdate overflow (CVE-2016-2106)
242 o Prevent ASN.1 BIO excessive memory allocation (CVE-2016-2109)
243 o EBCDIC overread (CVE-2016-2176)
244 o Modify behavior of ALPN to invoke callback after SNI/servername
245 callback, such that updates to the SSL_CTX affect ALPN.
246 o Remove LOW from the DEFAULT cipher list. This removes singles DES from
248 o Only remove the SSLv2 methods with the no-ssl2-method option.
250 Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
252 o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
253 o Disable SSLv2 default build, default negotiation and weak ciphers
255 o Fix a double-free in DSA code (CVE-2016-0705)
256 o Disable SRP fake user seed to address a server memory leak
258 o Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
260 o Fix memory issues in BIO_*printf functions (CVE-2016-0799)
261 o Fix side channel attack on modular exponentiation (CVE-2016-0702)
263 Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
265 o DH small subgroups (CVE-2016-0701)
266 o SSLv2 doesn't block disabled ciphers (CVE-2015-3197)
268 Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
270 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2015-3193)
271 o Certificate verify crash with missing PSS parameter (CVE-2015-3194)
272 o X509_ATTRIBUTE memory leak (CVE-2015-3195)
273 o Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
274 o In DSA_generate_parameters_ex, if the provided seed is too short,
277 Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
279 o Alternate chains certificate forgery (CVE-2015-1793)
280 o Race condition handling PSK identify hint (CVE-2015-3196)
282 Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
284 o Fix HMAC ABI incompatibility
286 Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
288 o Malformed ECParameters causes infinite loop (CVE-2015-1788)
289 o Exploitable out-of-bounds read in X509_cmp_time (CVE-2015-1789)
290 o PKCS7 crash with missing EnvelopedContent (CVE-2015-1790)
291 o CMS verify infinite loop with unknown hash function (CVE-2015-1792)
292 o Race condition handling NewSessionTicket (CVE-2015-1791)
294 Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
296 o OpenSSL 1.0.2 ClientHello sigalgs DoS fix (CVE-2015-0291)
297 o Multiblock corrupted pointer fix (CVE-2015-0290)
298 o Segmentation fault in DTLSv1_listen fix (CVE-2015-0207)
299 o Segmentation fault in ASN1_TYPE_cmp fix (CVE-2015-0286)
300 o Segmentation fault for invalid PSS parameters fix (CVE-2015-0208)
301 o ASN.1 structure reuse memory corruption fix (CVE-2015-0287)
302 o PKCS7 NULL pointer dereferences fix (CVE-2015-0289)
303 o DoS via reachable assert in SSLv2 servers fix (CVE-2015-0293)
304 o Empty CKE with client auth and DHE fix (CVE-2015-1787)
305 o Handshake with unseeded PRNG fix (CVE-2015-0285)
306 o Use After Free following d2i_ECPrivatekey error fix (CVE-2015-0209)
307 o X509_to_X509_REQ NULL pointer deref fix (CVE-2015-0288)
308 o Removed the export ciphers from the DEFAULT ciphers
310 Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]:
312 o Suite B support for TLS 1.2 and DTLS 1.2
313 o Support for DTLS 1.2
314 o TLS automatic EC curve selection.
315 o API to set TLS supported signature algorithms and curves
316 o SSL_CONF configuration API.
317 o TLS Brainpool support.
319 o CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
321 Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
323 o Build fixes for the Windows and OpenVMS platforms
325 Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
327 o Fix for CVE-2014-3571
328 o Fix for CVE-2015-0206
329 o Fix for CVE-2014-3569
330 o Fix for CVE-2014-3572
331 o Fix for CVE-2015-0204
332 o Fix for CVE-2015-0205
333 o Fix for CVE-2014-8275
334 o Fix for CVE-2014-3570
336 Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
338 o Fix for CVE-2014-3513
339 o Fix for CVE-2014-3567
340 o Mitigation for CVE-2014-3566 (SSL protocol vulnerability)
341 o Fix for CVE-2014-3568
343 Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
345 o Fix for CVE-2014-3512
346 o Fix for CVE-2014-3511
347 o Fix for CVE-2014-3510
348 o Fix for CVE-2014-3507
349 o Fix for CVE-2014-3506
350 o Fix for CVE-2014-3505
351 o Fix for CVE-2014-3509
352 o Fix for CVE-2014-5139
353 o Fix for CVE-2014-3508
355 Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
357 o Fix for CVE-2014-0224
358 o Fix for CVE-2014-0221
359 o Fix for CVE-2014-0198
360 o Fix for CVE-2014-0195
361 o Fix for CVE-2014-3470
362 o Fix for CVE-2010-5298
364 Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
366 o Fix for CVE-2014-0160
367 o Add TLS padding extension workaround for broken servers.
368 o Fix for CVE-2014-0076
370 Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
372 o Don't include gmt_unix_time in TLS server and client random values
373 o Fix for TLS record tampering bug CVE-2013-4353
374 o Fix for TLS version checking bug CVE-2013-6449
375 o Fix for DTLS retransmission bug CVE-2013-6450
377 Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]:
379 o Corrected fix for CVE-2013-0169
381 Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]:
383 o Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
384 o Include the fips configuration module.
385 o Fix OCSP bad key DoS attack CVE-2013-0166
386 o Fix for SSL/TLS/DTLS CBC plaintext recovery attack CVE-2013-0169
387 o Fix for TLS AESNI record handling flaw CVE-2012-2686
389 Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]:
391 o Fix TLS/DTLS record length checking bug CVE-2012-2333
392 o Don't attempt to use non-FIPS composite ciphers in FIPS mode.
394 Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]:
396 o Fix compilation error on non-x86 platforms.
397 o Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
398 o Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
400 Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]:
402 o Fix for ASN1 overflow bug CVE-2012-2110
403 o Workarounds for some servers that hang on long client hellos.
404 o Fix SEGV in AES code.
406 Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]:
408 o TLS/DTLS heartbeat support.
410 o RFC 5705 TLS key material exporter.
411 o RFC 5764 DTLS-SRTP negotiation.
412 o Next Protocol Negotiation.
413 o PSS signatures in certificates, requests and CRLs.
414 o Support for password based recipient info for CMS.
415 o Support TLS v1.2 and TLS v1.1.
416 o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
419 Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]:
421 o Fix for CMS/PKCS#7 MMA CVE-2012-0884
422 o Corrected fix for CVE-2011-4619
423 o Various DTLS fixes.
425 Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]:
427 o Fix for DTLS DoS issue CVE-2012-0050
429 Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]:
431 o Fix for DTLS plaintext recovery attack CVE-2011-4108
432 o Clear block padding bytes of SSL 3.0 records CVE-2011-4576
433 o Only allow one SGC handshake restart for SSL/TLS CVE-2011-4619
434 o Check parameters are not NULL in GOST ENGINE CVE-2012-0027
435 o Check for malformed RFC3779 data CVE-2011-4577
437 Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]:
439 o Fix for CRL vulnerability issue CVE-2011-3207
440 o Fix for ECDH crashes CVE-2011-3210
441 o Protection against EC timing attacks.
442 o Support ECDH ciphersuites for certificates using SHA2 algorithms.
443 o Various DTLS fixes.
445 Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]:
447 o Fix for security issue CVE-2011-0014
449 Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]:
451 o Fix for security issue CVE-2010-4180
452 o Fix for CVE-2010-4252
453 o Fix mishandling of absent EC point format extension.
454 o Fix various platform compilation issues.
455 o Corrected fix for security issue CVE-2010-3864.
457 Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]:
459 o Fix for security issue CVE-2010-3864.
460 o Fix for CVE-2010-2939
461 o Fix WIN32 build system for GOST ENGINE.
463 Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]:
465 o Fix for security issue CVE-2010-1633.
466 o GOST MAC and CFB fixes.
468 Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]:
470 o RFC3280 path validation: sufficient to process PKITS tests.
471 o Integrated support for PVK files and keyblobs.
472 o Change default private key format to PKCS#8.
473 o CMS support: able to process all examples in RFC4134
474 o Streaming ASN1 encode support for PKCS#7 and CMS.
475 o Multiple signer and signer add support for PKCS#7 and CMS.
476 o ASN1 printing support.
477 o Whirlpool hash algorithm added.
478 o RFC3161 time stamp support.
479 o New generalised public key API supporting ENGINE based algorithms.
480 o New generalised public key API utilities.
481 o New ENGINE supporting GOST algorithms.
482 o SSL/TLS GOST ciphersuite support.
483 o PKCS#7 and CMS GOST support.
484 o RFC4279 PSK ciphersuite support.
485 o Supported points format extension for ECC ciphersuites.
486 o ecdsa-with-SHA224/256/384/512 signature types.
487 o dsa-with-SHA224 and dsa-with-SHA256 signature types.
488 o Opaque PRF Input TLS extension support.
489 o Updated time routines to avoid OS limitations.
491 Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]:
493 o CFB cipher definition fixes.
494 o Fix security issues CVE-2010-0740 and CVE-2010-0433.
496 Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]:
498 o Cipher definition fixes.
499 o Workaround for slow RAND_poll() on some WIN32 versions.
500 o Remove MD2 from algorithm tables.
501 o SPKAC handling fixes.
502 o Support for RFC5746 TLS renegotiation extension.
503 o Compression memory leak fixed.
504 o Compression session resumption fixed.
505 o Ticket and SNI coexistence fixes.
506 o Many fixes to DTLS handling.
508 Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]:
510 o Temporary work around for CVE-2009-3555: disable renegotiation.
512 Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]:
514 o Fix various build issues.
515 o Fix security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
517 Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]:
519 o Fix security issue (CVE-2008-5077)
520 o Merge FIPS 140-2 branch code.
522 Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]:
524 o CryptoAPI ENGINE support.
525 o Various precautionary measures.
526 o Fix for bugs affecting certificate request creation.
527 o Support for local machine keyset attribute in PKCS#12 files.
529 Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]:
531 o Backport of CMS functionality to 0.9.8.
532 o Fixes for bugs introduced with 0.9.8f.
534 Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]:
536 o Add gcc 4.2 support.
537 o Add support for AES and SSE2 assembly language optimization
539 o Support for RFC4507bis and server name extensions if explicitly
540 selected at compile time.
542 o RFC4507bis support.
543 o TLS Extensions support.
545 Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]:
547 o Various ciphersuite selection fixes.
550 Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]:
552 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
553 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
554 o Changes to ciphersuite selection algorithm
556 Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]:
558 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
559 o New cipher Camellia
561 Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]:
563 o Cipher string fixes.
564 o Fixes for VC++ 2005.
565 o Updated ECC cipher suite support.
566 o New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
567 o Zlib compression usage fixes.
568 o Built in dynamic engine compilation support on Win32.
569 o Fixes auto dynamic engine loading in Win32.
571 Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]:
573 o Fix potential SSL 2.0 rollback, CVE-2005-2969
574 o Extended Windows CE support
576 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]:
578 o Major work on the BIGNUM library for higher efficiency and to
579 make operations more streamlined and less contradictory. This
580 is the result of a major audit of the BIGNUM library.
581 o Addition of BIGNUM functions for fields GF(2^m) and NIST
582 curves, to support the Elliptic Crypto functions.
583 o Major work on Elliptic Crypto; ECDH and ECDSA added, including
584 the use through EVP, X509 and ENGINE.
585 o New ASN.1 mini-compiler that's usable through the OpenSSL
587 o Added support for ASN.1 indefinite length constructed encoding.
588 o New PKCS#12 'medium level' API to manipulate PKCS#12 files.
589 o Complete rework of shared library construction and linking
590 programs with shared or static libraries, through a separate
592 o Rework of the passing of parameters from one Makefile to another.
593 o Changed ENGINE framework to load dynamic engine modules
594 automatically from specifically given directories.
595 o New structure and ASN.1 functions for CertificatePair.
596 o Changed the ZLIB compression method to be stateful.
597 o Changed the key-generation and primality testing "progress"
598 mechanism to take a structure that contains the ticker
599 function and an argument.
600 o New engine module: GMP (performs private key exponentiation).
601 o New engine module: VIA PadLOck ACE extension in VIA C3
603 o Added support for IPv6 addresses in certificate extensions.
604 See RFC 1884, section 2.2.
605 o Added support for certificate policy mappings, policy
606 constraints and name constraints.
607 o Added support for multi-valued AVAs in the OpenSSL
609 o Added support for multiple certificates with the same subject
610 in the 'openssl ca' index file.
611 o Make it possible to create self-signed certificates using
612 'openssl ca -selfsign'.
613 o Make it possible to generate a serial number file with
614 'openssl ca -create_serial'.
615 o New binary search functions with extended functionality.
617 o New STORE structure and library to provide an interface to all
618 sorts of data repositories. Supports storage of public and
619 private keys, certificates, CRLs, numbers and arbitrary blobs.
620 This library is unfortunately unfinished and unused within
622 o New control functions for the error stack.
623 o Changed the PKCS#7 library to support one-pass S/MIME
625 o Added the possibility to compile without old deprecated
626 functionality with the OPENSSL_NO_DEPRECATED macro or the
627 'no-deprecated' argument to the config and Configure scripts.
628 o Constification of all ASN.1 conversion functions, and other
630 o Improved platform support for PowerPC.
631 o New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
632 o New X509_VERIFY_PARAM structure to support parameterisation
633 of X.509 path validation.
634 o Major overhaul of RC4 performance on Intel P4, IA-64 and
636 o Changed the Configure script to have some algorithms disabled
637 by default. Those can be explicitly enabled with the new
638 argument form 'enable-xxx'.
639 o Change the default digest in 'openssl' commands from MD5 to
641 o Added support for DTLS.
642 o New BIGNUM blinding.
643 o Added support for the RSA-PSS encryption scheme
644 o Added support for the RSA X.931 padding.
645 o Added support for BSD sockets on NetWare.
646 o Added support for files larger than 2GB.
647 o Added initial support for Win64.
648 o Added alternate pkg-config files.
650 Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]:
652 o FIPS 1.1.1 module linking.
653 o Various ciphersuite selection fixes.
655 Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]:
657 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
658 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
660 Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]:
662 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
664 Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]:
666 o Visual C++ 2005 fixes.
667 o Update Windows build system for FIPS.
669 Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]:
671 o Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
673 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]:
675 o Fix SSL 2.0 Rollback, CVE-2005-2969
676 o Allow use of fixed-length exponent on DSA signing
677 o Default fixed-window RSA, DSA, DH private-key operations
679 Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]:
681 o More compilation issues fixed.
682 o Adaptation to more modern Kerberos API.
683 o Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
684 o Enhanced x86_64 assembler BIGNUM module.
685 o More constification.
686 o Added processing of proxy certificates (RFC 3820).
688 Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]:
690 o Several compilation issues fixed.
691 o Many memory allocation failure checks added.
692 o Improved comparison of X509 Name type.
693 o Mandatory basic checks on certificates.
694 o Performance improvements.
696 Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]:
698 o Fix race condition in CRL checking code.
699 o Fixes to PKCS#7 (S/MIME) code.
701 Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]:
703 o Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
704 o Security: Fix null-pointer assignment in do_change_cipher_spec()
705 o Allow multiple active certificates with same subject in CA index
706 o Multiple X509 verification fixes
707 o Speed up HMAC and other operations
709 Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]:
711 o Security: fix various ASN1 parsing bugs.
712 o New -ignore_err option to OCSP utility.
713 o Various interop and bug fixes in S/MIME code.
714 o SSL/TLS protocol fix for unrequested client certificates.
716 Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]:
718 o Security: counter the Klima-Pokorny-Rosa extension of
719 Bleichbacher's attack
720 o Security: make RSA blinding default.
721 o Configuration: Irix fixes, AIX fixes, better mingw support.
722 o Support for new platforms: linux-ia64-ecc.
723 o Build: shared library support fixes.
724 o ASN.1: treat domainComponent correctly.
725 o Documentation: fixes and additions.
727 Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]:
729 o Security: Important security related bugfixes.
730 o Enhanced compatibility with MIT Kerberos.
731 o Can be built without the ENGINE framework.
732 o IA32 assembler enhancements.
733 o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
734 o Configuration: the no-err option now works properly.
735 o SSL/TLS: now handles manual certificate chain building.
736 o SSL/TLS: certain session ID malfunctions corrected.
738 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]:
740 o New library section OCSP.
741 o Complete rewrite of ASN1 code.
742 o CRL checking in verify code and openssl utility.
743 o Extension copying in 'ca' utility.
744 o Flexible display options in 'ca' utility.
745 o Provisional support for international characters with UTF8.
746 o Support for external crypto devices ('engine') is no longer
747 a separate distribution.
748 o New elliptic curve library section.
749 o New AES (Rijndael) library section.
750 o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
751 Linux x86_64, Linux 64-bit on Sparc v9
752 o Extended support for some platforms: VxWorks
753 o Enhanced support for shared libraries.
754 o Now only builds PIC code when shared library support is requested.
755 o Support for pkg-config.
756 o Lots of new manuals.
757 o Makes symbolic links to or copies of manuals to cover all described
759 o Change DES API to clean up the namespace (some applications link also
760 against libdes providing similar functions having the same name).
761 Provide macros for backward compatibility (will be removed in the
763 o Unify handling of cryptographic algorithms (software and engine)
764 to be available via EVP routines for asymmetric and symmetric ciphers.
765 o NCONF: new configuration handling routines.
766 o Change API to use more 'const' modifiers to improve error checking
768 o Finally remove references to RSAref.
769 o Reworked parts of the BIGNUM code.
770 o Support for new engines: Broadcom ubsec, Accelerated Encryption
771 Processing, IBM 4758.
772 o A few new engines added in the demos area.
773 o Extended and corrected OID (object identifier) table.
774 o PRNG: query at more locations for a random device, automatic query for
775 EGD style random sources at several locations.
776 o SSL/TLS: allow optional cipher choice according to server's preference.
777 o SSL/TLS: allow server to explicitly set new session ids.
778 o SSL/TLS: support Kerberos cipher suites (RFC2712).
779 Only supports MIT Kerberos for now.
780 o SSL/TLS: allow more precise control of renegotiations and sessions.
781 o SSL/TLS: add callback to retrieve SSL/TLS messages.
782 o SSL/TLS: support AES cipher suites (RFC3268).
784 Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]:
786 o Security: fix various ASN1 parsing bugs.
787 o SSL/TLS protocol fix for unrequested client certificates.
789 Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]:
791 o Security: counter the Klima-Pokorny-Rosa extension of
792 Bleichbacher's attack
793 o Security: make RSA blinding default.
794 o Build: shared library support fixes.
796 Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]:
798 o Important security related bugfixes.
800 Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]:
802 o New configuration targets for Tandem OSS and A/UX.
803 o New OIDs for Microsoft attributes.
804 o Better handling of SSL session caching.
805 o Better comparison of distinguished names.
806 o Better handling of shared libraries in a mixed GNU/non-GNU environment.
807 o Support assembler code with Borland C.
808 o Fixes for length problems.
809 o Fixes for uninitialised variables.
810 o Fixes for memory leaks, some unusual crashes and some race conditions.
811 o Fixes for smaller building problems.
812 o Updates of manuals, FAQ and other instructive documents.
814 Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]:
816 o Important building fixes on Unix.
818 Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]:
820 o Various important bugfixes.
822 Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]:
824 o Important security related bugfixes.
825 o Various SSL/TLS library bugfixes.
827 Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]:
829 o Various SSL/TLS library bugfixes.
830 o Fix DH parameter generation for 'non-standard' generators.
832 Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]:
834 o Various SSL/TLS library bugfixes.
835 o BIGNUM library fixes.
836 o RSA OAEP and random number generation fixes.
837 o Object identifiers corrected and added.
838 o Add assembler BN routines for IA64.
839 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
840 MIPS Linux; shared library support for Irix, HP-UX.
841 o Add crypto accelerator support for AEP, Baltimore SureWare,
842 Broadcom and Cryptographic Appliance's keyserver
843 [in 0.9.6c-engine release].
845 Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]:
847 o Security fix: PRNG improvements.
848 o Security fix: RSA OAEP check.
849 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
851 o MIPS bug fix in BIGNUM.
852 o Bug fix in "openssl enc".
853 o Bug fix in X.509 printing routine.
854 o Bug fix in DSA verification routine and DSA S/MIME verification.
855 o Bug fix to make PRNG thread-safe.
856 o Bug fix in RAND_file_name().
857 o Bug fix in compatibility mode trust settings.
858 o Bug fix in blowfish EVP.
859 o Increase default size for BIO buffering filter.
860 o Compatibility fixes in some scripts.
862 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]:
864 o Security fix: change behavior of OpenSSL to avoid using
865 environment variables when running as root.
866 o Security fix: check the result of RSA-CRT to reduce the
867 possibility of deducing the private key from an incorrectly
868 calculated signature.
869 o Security fix: prevent Bleichenbacher's DSA attack.
870 o Security fix: Zero the premaster secret after deriving the
871 master secret in DH ciphersuites.
872 o Reimplement SSL_peek(), which had various problems.
873 o Compatibility fix: the function des_encrypt() renamed to
874 des_encrypt1() to avoid clashes with some Unixen libc.
875 o Bug fixes for Win32, HP/UX and Irix.
876 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
877 memory checking routines.
878 o Bug fixes for RSA operations in threaded environments.
879 o Bug fixes in misc. openssl applications.
880 o Remove a few potential memory leaks.
881 o Add tighter checks of BIGNUM routines.
882 o Shared library support has been reworked for generality.
883 o More documentation.
884 o New function BN_rand_range().
885 o Add "-rand" option to openssl s_client and s_server.
887 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]:
889 o Some documentation for BIO and SSL libraries.
890 o Enhanced chain verification using key identifiers.
891 o New sign and verify options to 'dgst' application.
892 o Support for DER and PEM encoded messages in 'smime' application.
893 o New 'rsautl' application, low level RSA utility.
895 o Bugfix for SSL rollback padding check.
896 o Support for external crypto devices [1].
897 o Enhanced EVP interface.
899 [1] The support for external crypto devices is currently a separate
900 distribution. See the file README.ENGINE.
902 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]:
904 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
905 o Shared library support for HPUX and Solaris-gcc
906 o Support of Linux/IA64
907 o Assembler support for Mingw32
908 o New 'rand' application
909 o New way to check for existence of algorithms from scripts
911 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]:
913 o S/MIME support in new 'smime' command
914 o Documentation for the OpenSSL command line application
915 o Automation of 'req' application
916 o Fixes to make s_client, s_server work under Windows
917 o Support for multiple fieldnames in SPKACs
918 o New SPKAC command line utility and associated library functions
919 o Options to allow passwords to be obtained from various sources
920 o New public key PEM format and options to handle it
921 o Many other fixes and enhancements to command line utilities
922 o Usable certificate chain verification
923 o Certificate purpose checking
924 o Certificate trust settings
925 o Support of authority information access extension
926 o Extensions in certificate requests
927 o Simplified X509 name and attribute routines
928 o Initial (incomplete) support for international character sets
929 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
930 o Read only memory BIOs and simplified creation function
931 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
932 record; allow fragmentation and interleaving of handshake and other
934 o TLS/SSL code now "tolerates" MS SGC
935 o Work around for Netscape client certificate hang bug
936 o RSA_NULL option that removes RSA patent code but keeps other
938 o Memory leak detection now allows applications to add extra information
939 via a per-thread stack
940 o PRNG robustness improved
942 o BIGNUM library bug fixes
943 o Faster DSA parameter generation
944 o Enhanced support for Alpha Linux
945 o Experimental MacOS support
947 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]:
949 o Transparent support for PKCS#8 format private keys: these are used
950 by several software packages and are more secure than the standard
952 o PKCS#5 v2.0 implementation
953 o Password callbacks have a new void * argument for application data
954 o Avoid various memory leaks
955 o New pipe-like BIO that allows using the SSL library when actual I/O
956 must be handled by the application (BIO pair)
958 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]:
959 o Lots of enhancements and cleanups to the Configuration mechanism
960 o RSA OEAP related fixes
961 o Added `openssl ca -revoke' option for revoking a certificate
962 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
963 o Source tree cleanups: removed lots of obsolete files
964 o Thawte SXNet, certificate policies and CRL distribution points
966 o Preliminary (experimental) S/MIME support
967 o Support for ASN.1 UTF8String and VisibleString
968 o Full integration of PKCS#12 code
969 o Sparc assembler bignum implementation, optimized hash functions
970 o Option to disable selected ciphers
972 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]:
973 o Fixed a security hole related to session resumption
974 o Fixed RSA encryption routines for the p < q case
975 o "ALL" in cipher lists now means "everything except NULL ciphers"
976 o Support for Triple-DES CBCM cipher
977 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
978 o First support for new TLSv1 ciphers
979 o Added a few new BIOs (syslog BIO, reliable BIO)
980 o Extended support for DSA certificate/keys.
981 o Extended support for Certificate Signing Requests (CSR)
982 o Initial support for X.509v3 extensions
983 o Extended support for compression inside the SSL record layer
984 o Overhauled Win32 builds
985 o Cleanups and fixes to the Big Number (BN) library
986 o Support for ASN.1 GeneralizedTime
987 o Splitted ASN.1 SETs from SEQUENCEs
988 o ASN1 and PEM support for Netscape Certificate Sequences
989 o Overhauled Perl interface
990 o Lots of source tree cleanups.
991 o Lots of memory leak fixes.
994 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]:
995 o Integration of the popular NO_RSA/NO_DSA patches
996 o Initial support for compression inside the SSL record layer
997 o Added BIO proxy and filtering functionality
998 o Extended Big Number (BN) library
999 o Added RIPE MD160 message digest
1000 o Added support for RC2/64bit cipher
1001 o Extended ASN.1 parser routines
1002 o Adjustments of the source tree for CVS
1003 o Support for various new platforms