Scientific Linux SL6.x: CVE-2012-1569 Critical: libtasn1 DoS

Date: Wed, 28 Mar 2012 11:17:37 -0500
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Sender: Security Errata for Scientific Linux
 
From: Patrick Riehecky 
Subject: Security ERRATA Important: libtasn1 on SL6.x i386/x86_64
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Synopsis: Important: libtasn1 security update
Issue Date: 2012-03-27
CVE Numbers: CVE-2012-1569

libtasn1 is a library developed for ASN.1 (Abstract Syntax Notation One)
structures management that includes DER (Distinguished Encoding Rules)
encoding and decoding.

A flaw was found in the way libtasn1 decoded DER data. An attacker could
create carefully-crafted DER encoded input (such as an X.509 certificate)
that, when parsed by an application that uses libtasn1 (such as
applications using GnuTLS), could cause the application to crash.
(CVE-2012-1569)

Users of libtasn1 are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. For the update to take
effect, all applications linked to the libtasn1 library must be restarted,
or the system rebooted.

SL6:
 i386
 libtasn1-2.3-3.el6_2.1.i686.rpm
 libtasn1-debuginfo-2.3-3.el6_2.1.i686.rpm
 libtasn1-devel-2.3-3.el6_2.1.i686.rpm
 libtasn1-tools-2.3-3.el6_2.1.i686.rpm
 x86_64
 libtasn1-2.3-3.el6_2.1.i686.rpm
 libtasn1-2.3-3.el6_2.1.x86_64.rpm
 libtasn1-debuginfo-2.3-3.el6_2.1.i686.rpm
 libtasn1-debuginfo-2.3-3.el6_2.1.x86_64.rpm
 libtasn1-devel-2.3-3.el6_2.1.i686.rpm
 libtasn1-devel-2.3-3.el6_2.1.x86_64.rpm
 libtasn1-tools-2.3-3.el6_2.1.x86_64.rpm

- Scientific Linux Development Team