OpenSSL CHANGES
_______________
- Changes between 1.0.1p and 1.0.1q [xx XXX xxxx]
+ Changes between 1.0.1r and 1.0.1s [xx XXX xxxx]
+
+ * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
+ is by default disabled at build-time. Builds that are not configured with
+ "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
+ users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
+ will need to explicitly call either of:
+
+ SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
+ or
+ SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
+
+ as appropriate. Even if either of those is used, or the application
+ explicitly uses the version-specific SSLv2_method() or its client and
+ server variants, SSLv2 ciphers vulnerable to exhaustive search key
+ recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
+ ciphers, and SSLv2 56-bit DES are no longer available.
+ [Viktor Dukhovni]
+
+ *) Disable SRP fake user seed to address a server memory leak.
+
+ Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
+
+ SRP_VBASE_get_by_user had inconsistent memory management behaviour.
+ In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
+ was changed to ignore the "fake user" SRP seed, even if the seed
+ is configured.
+
+ Users should use SRP_VBASE_get1_by_user instead. Note that in
+ SRP_VBASE_get1_by_user, caller must free the returned value. Note
+ also that even though configuring the SRP seed attempts to hide
+ invalid usernames by continuing the handshake with fake
+ credentials, this behaviour is not constant time and no strong
+ guarantees are made that the handshake is indistinguishable from
+ that of a valid user.
+ (CVE-2016-0798)
+ [Emilia Käsper]
+
+ Changes between 1.0.1q and 1.0.1r [28 Jan 2016]
+
+ *) Protection for DH small subgroup attacks
+
+ As a precautionary measure the SSL_OP_SINGLE_DH_USE option has been
+ switched on by default and cannot be disabled. This could have some
+ performance impact.
+ [Matt Caswell]
+
+ *) SSLv2 doesn't block disabled ciphers
+
+ A malicious client can negotiate SSLv2 ciphers that have been disabled on
+ the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
+ been disabled, provided that the SSLv2 protocol was not also disabled via
+ SSL_OP_NO_SSLv2.
+
+ This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
+ and Sebastian Schinzel.
+ (CVE-2015-3197)
+ [Viktor Dukhovni]
+
+ *) Reject DH handshakes with parameters shorter than 1024 bits.
+ [Kurt Roeckx]
+
+ Changes between 1.0.1p and 1.0.1q [3 Dec 2015]
+
+ *) Certificate verify crash with missing PSS parameter
+
+ The signature verification routines will crash with a NULL pointer
+ dereference if presented with an ASN.1 signature using the RSA PSS
+ algorithm and absent mask generation function parameter. Since these
+ routines are used to verify certificate signature algorithms this can be
+ used to crash any certificate verification operation and exploited in a
+ DoS attack. Any application which performs certificate verification is
+ vulnerable including OpenSSL clients and servers which enable client
+ authentication.
+
+ This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
+ (CVE-2015-3194)
+ [Stephen Henson]
+
+ *) X509_ATTRIBUTE memory leak
+
+ When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
+ memory. This structure is used by the PKCS#7 and CMS routines so any
+ application which reads PKCS#7 or CMS data from untrusted sources is
+ affected. SSL/TLS is not affected.
+
+ This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
+ libFuzzer.
+ (CVE-2015-3195)
+ [Stephen Henson]
*) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
This changes the decoding behaviour for some invalid messages,
[Emilia Käsper]
*) In DSA_generate_parameters_ex, if the provided seed is too short,
- return an error
+ use a random seed, as already documented.
[Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
- *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
- from RFC4279, RFC4785, RFC5487, RFC5489.
-
Changes between 1.0.1o and 1.0.1p [9 Jul 2015]
*) Alternate chains certificate forgery
This issue was reported to OpenSSL by Adam Langley/David Benjamin
(Google/BoringSSL).
+ (CVE-2015-1793)
[Matt Caswell]
- Changes between 1.0.1n and 1.0.1o [12 Jun 2015]
+ *) Race condition handling PSK identify hint
+ If PSK identity hints are received by a multi-threaded client then
+ the values are wrongly updated in the parent SSL_CTX structure. This can
+ result in a race condition potentially leading to a double free of the
+ identify hint data.
+ (CVE-2015-3196)
+ [Stephen Henson]
+
+ Changes between 1.0.1n and 1.0.1o [12 Jun 2015]
*) Fix HMAC ABI incompatibility. The previous version introduced an ABI
incompatibility in the handling of HMAC. The previous ABI has now been
restored.
projects / openssl.git / blobdiff