Important: libvorbis security update

Updated libvorbis packages that fix one security issue are now available
for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

The libvorbis packages contain runtime libraries for use in programs that
support Ogg Vorbis. Ogg Vorbis is a fully open, non-proprietary, patent-and
royalty-free, general-purpose compressed audio format.

An insufficient input validation flaw was found in the way libvorbis
processes the codec file headers (static mode headers and encoding books)
of the Ogg Vorbis audio file format (Ogg). A remote attacker could provide
a specially-crafted Ogg file that would cause a denial of service (memory
corruption and application crash) or, potentially, execute arbitrary code
with the privileges of an application using the libvorbis library when
opened by a victim. (CVE-2009-2663)

Users of libvorbis should upgrade to these updated packages, which contain
a backported patch to correct this issue. The desktop must be restarted
(log out, then log back in) for this update to take effect.

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

516259 - CVE-2009-2663 libvorbis: Improper codec headers processing (DoS, ACE)

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2663
http://www.redhat.com/security/updates/classification/#important