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OpenSSL CHANGES
_______________
+ Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
+
+ *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
+
+ This addresses the flaw in CBC record processing discovered by
+ Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
+ at: http://www.isg.rhul.ac.uk/tls/
+
+ Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
+ Security Group at Royal Holloway, University of London
+ (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
+ Emilia Käsper for the initial patch.
+ (CVE-2013-0169)
+ [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
+
+ *) Return an error when checking OCSP signatures when key is NULL.
+ This fixes a DoS attack. (CVE-2013-0166)
+ [Steve Henson]
+
+ *) Call OCSP Stapling callback after ciphersuite has been chosen, so
+ the right response is stapled. Also change SSL_get_certificate()
+ so it returns the certificate actually sent.
+ See http://rt.openssl.org/Ticket/Display.html?id=2836.
+ (This is a backport)
+ [Rob Stradling <rob.stradling@comodo.com>]
+
+ *) Fix possible deadlock when decoding public keys.
+ [Steve Henson]
+
+ Changes between 0.9.8w and 0.9.8x [10 May 2012]
+
+ *) Sanity check record length before skipping explicit IV in DTLS
+ to fix DoS attack.
+
+ Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
+ fuzzing as a service testing platform.
+ (CVE-2012-2333)
+ [Steve Henson]
+
+ *) Initialise tkeylen properly when encrypting CMS messages.
+ Thanks to Solar Designer of Openwall for reporting this issue.
+ [Steve Henson]
+
+ Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
+
+ *) The fix for CVE-2012-2110 did not take into account that the
+ 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
+ int in OpenSSL 0.9.8, making it still vulnerable. Fix by
+ rejecting negative len parameter. (CVE-2012-2131)
+ [Tomas Hoger <thoger@redhat.com>]
+
+ Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
+
+ *) Check for potentially exploitable overflows in asn1_d2i_read_bio
+ BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
+ in CRYPTO_realloc_clean.
+
+ Thanks to Tavis Ormandy, Google Security Team, for discovering this
+ issue and to Adam Langley <agl@chromium.org> for fixing it.
+ (CVE-2012-2110)
+ [Adam Langley (Google), Tavis Ormandy, Google Security Team]
+
+ Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
+
+ *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
+ in CMS and PKCS7 code. When RSA decryption fails use a random key for
+ content decryption and always return the same error. Note: this attack
+ needs on average 2^20 messages so it only affects automated senders. The
+ old behaviour can be reenabled in the CMS code by setting the
+ CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
+ an MMA defence is not necessary.
+ Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
+ this issue. (CVE-2012-0884)
+ [Steve Henson]
+
+ *) Fix CVE-2011-4619: make sure we really are receiving a
+ client hello before rejecting multiple SGC restarts. Thanks to
+ Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
+ [Steve Henson]
+
+ Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
+
+ *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
+ Thanks to Antonio Martin, Enterprise Secure Access Research and
+ Development, Cisco Systems, Inc. for discovering this bug and
+ preparing a fix. (CVE-2012-0050)
+ [Antonio Martin]
+
+ Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
+
+ *) Nadhem Alfardan and Kenny Paterson have discovered an extension
+ of the Vaudenay padding oracle attack on CBC mode encryption
+ which enables an efficient plaintext recovery attack against
+ the OpenSSL implementation of DTLS. Their attack exploits timing
+ differences arising during decryption processing. A research
+ paper describing this attack can be found at:
+ http://www.isg.rhul.ac.uk/~kp/dtls.pdf
+ Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
+ Security Group at Royal Holloway, University of London
+ (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
+ <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
+ for preparing the fix. (CVE-2011-4108)
+ [Robin Seggelmann, Michael Tuexen]
+
+ *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
+ [Ben Laurie, Kasper <ekasper@google.com>]
+
+ *) Clear bytes used for block padding of SSL 3.0 records.
+ (CVE-2011-4576)
+ [Adam Langley (Google)]
+
+ *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
+ Kadianakis <desnacked@gmail.com> for discovering this issue and
+ Adam Langley for preparing the fix. (CVE-2011-4619)
+ [Adam Langley (Google)]
+
+ *) Prevent malformed RFC3779 data triggering an assertion failure.
+ Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
+ and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
+ [Rob Austein <sra@hactrn.net>]
+
+ *) Fix ssl_ciph.c set-up race.
+ [Adam Langley (Google)]
+
+ *) Fix spurious failures in ecdsatest.c.
+ [Emilia Käsper (Google)]
+
+ *) Fix the BIO_f_buffer() implementation (which was mixing different
+ interpretations of the '..._len' fields).
+ [Adam Langley (Google)]
+
+ *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
+ BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
+ threads won't reuse the same blinding coefficients.
+
+ This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
+ lock to call BN_BLINDING_invert_ex, and avoids one use of
+ BN_BLINDING_update for each BN_BLINDING structure (previously,
+ the last update always remained unused).
+ [Emilia Käsper (Google)]
+
+ *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
+ for multi-threaded use of ECDH.
+ [Adam Langley (Google)]
+
+ *) Fix x509_name_ex_d2i memory leak on bad inputs.
+ [Bodo Moeller]
+
+ *) Add protection against ECDSA timing attacks as mentioned in the paper
+ by Billy Bob Brumley and Nicola Tuveri, see:
+
+ http://eprint.iacr.org/2011/232.pdf
+
+ [Billy Bob Brumley and Nicola Tuveri]
+
+ Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
+
+ *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
+ [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
+
+ *) Fix bug in string printing code: if *any* escaping is enabled we must
+ escape the escape character (backslash) or the resulting string is
+ ambiguous.
+ [Steve Henson]
+
Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
*) Disable code workaround for ancient and obsolete Netscape browsers