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[ MDVSA-2015:019 ] openssl



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 Mandriva Linux Security Advisory                         MDVSA-2015:019
 http://www.mandriva.com/en/support/security/
 _______________________________________________________________________

 Package : openssl
 Date    : January 9, 2015
 Affected: Business Server 1.0
 _______________________________________________________________________

 Problem Description:

 Multiple vulnerabilities has been discovered and corrected in openssl:
 
 A carefully crafted DTLS message can cause a segmentation fault in
 OpenSSL due to a NULL pointer dereference. This could lead to a Denial
 Of Service attack (CVE-2014-3571).
 
 A memory leak can occur in the dtls1_buffer_record function under
 certain conditions. In particular this could occur if an attacker
 sent repeated DTLS records with the same sequence number but for the
 next epoch. The memory leak could be exploited by an attacker in a
 Denial of Service attack through memory exhaustion (CVE-2015-0206).
 
 When openssl is built with the no-ssl3 option and a SSL v3 ClientHello
 is received the ssl method would be set to NULL which could later
 result in a NULL pointer dereference (CVE-2014-3569).
 
 An OpenSSL client will accept a handshake using an ephemeral ECDH
 ciphersuite using an ECDSA certificate if the server key exchange
 message is omitted. This effectively removes forward secrecy from
 the ciphersuite (CVE-2014-3572).
 
 An OpenSSL client will accept the use of an RSA temporary key in
 a non-export RSA key exchange ciphersuite. A server could present
 a weak temporary key and downgrade the security of the session
 (CVE-2015-0204).
 
 An OpenSSL server will accept a DH certificate for client
 authentication without the certificate verify message. This effectively
 allows a client to authenticate without the use of a private key. This
 only affects servers which trust a client certificate authority which
 issues certificates containing DH keys: these are extremely rare and
 hardly ever encountered (CVE-2015-0205).
 
 OpenSSL accepts several non-DER-variations of certificate signature
 algorithm and signature encodings. OpenSSL also does not enforce a
 match between the signature algorithm between the signed and unsigned
 portions of the certificate. By modifying the contents of the signature
 algorithm or the encoding of the signature, it is possible to change
 the certificate's fingerprint. This does not allow an attacker to
 forge certificates, and does not affect certificate verification or
 OpenSSL servers/clients in any other way. It also does not affect
 common revocation mechanisms. Only custom applications that rely
 on the uniqueness of the fingerprint (e.g. certificate blacklists)
 may be affected (CVE-2014-8275).
 
 Bignum squaring (BN_sqr) may produce incorrect results on some
 platforms, including x86_64. This bug occurs at random with a very
 low probability, and is not known to be exploitable in any way,
 though its exact impact is difficult to determine (CVE-2014-3570).
 
 The updated packages have been upgraded to the 1.0.0p version where
 these security flaws has been fixed.
 _______________________________________________________________________

 References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3571
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0206
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3569
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3572
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0204
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0205
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8275
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3570
 https://www.openssl.org/news/secadv_20150108.txt
 _______________________________________________________________________

 Updated Packages:

 Mandriva Business Server 1/X86_64:
 08baba1b5ee61bdd0bfbcf81d465f154  mbs1/x86_64/lib64openssl1.0.0-1.0.0p-1.mbs1.x86_64.rpm
 51198a2b577e182d10ad72d28b67288e  mbs1/x86_64/lib64openssl-devel-1.0.0p-1.mbs1.x86_64.rpm
 aa34fd335001d83bc71810d6c0b14e85  mbs1/x86_64/lib64openssl-engines1.0.0-1.0.0p-1.mbs1.x86_64.rpm
 c8b6fdaba18364b315e78761a5aa0c1c  mbs1/x86_64/lib64openssl-static-devel-1.0.0p-1.mbs1.x86_64.rpm
 fc67f3da9fcd1077128845ce85be93e2  mbs1/x86_64/openssl-1.0.0p-1.mbs1.x86_64.rpm 
 ab8f672de2bf2f0f412034f89624aa32  mbs1/SRPMS/openssl-1.0.0p-1.mbs1.src.rpm
 _______________________________________________________________________

 To upgrade automatically use MandrivaUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 All packages are signed by Mandriva for security.  You can obtain the
 GPG public key of the Mandriva Security Team by executing:

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:

  http://www.mandriva.com/en/support/security/advisories/

 If you want to report vulnerabilities, please contact

  security_(at)_mandriva.com
 _______________________________________________________________________

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Mandriva Security Team
  <security*mandriva.com>
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