Issued:
2012-03-27
Updated:
2012-03-27

RHSA-2012:0427 - Important: libtasn1 security update

Synopsis

Important: libtasn1 security update

Type/Severity

Security Advisory Important

Topic

Updated libtasn1 packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

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)

Red Hat would like to thank Matthew Hall of Mu Dynamics for reporting this issue.

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.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • libtasn1-2.3-3.el6_2.1.ppc64.rpm
  • libtasn1-debuginfo-2.3-3.el6_2.1.s390.rpm
  • libtasn1-devel-2.3-3.el6_2.1.i686.rpm
  • libtasn1-tools-2.3-3.el6_2.1.x86_64.rpm
  • libtasn1-devel-2.3-3.el6_2.1.x86_64.rpm
  • libtasn1-2.3-3.el6_2.1.i686.rpm
  • libtasn1-devel-2.3-3.el6_2.1.ppc.rpm
  • libtasn1-debuginfo-2.3-3.el6_2.1.s390x.rpm
  • libtasn1-tools-2.3-3.el6_2.1.i686.rpm
  • libtasn1-tools-2.3-3.el6_2.1.s390x.rpm
  • libtasn1-devel-2.3-3.el6_2.1.s390.rpm
  • libtasn1-tools-2.3-3.el6_2.1.ppc64.rpm
  • libtasn1-2.3-3.el6_2.1.ppc.rpm
  • libtasn1-debuginfo-2.3-3.el6_2.1.x86_64.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.ppc64.rpm
  • libtasn1-2.3-3.el6_2.1.s390x.rpm
  • libtasn1-debuginfo-2.3-3.el6_2.1.ppc.rpm
  • libtasn1-2.3-3.el6_2.1.src.rpm
  • libtasn1-devel-2.3-3.el6_2.1.s390x.rpm
  • libtasn1-2.3-3.el6_2.1.s390.rpm
  • libtasn1-devel-2.3-3.el6_2.1.ppc64.rpm

Fixes

CVEs

References

Additional information