=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: libvorbis security update
Advisory ID:       RHSA-2008:0271-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0271.html
Issue date:        2008-05-14
CVE Names:         CVE-2008-1419 CVE-2008-1420 CVE-2008-1423 
                   CVE-2008-2009 
=====================================================================

1. Summary:

Updated libvorbis packages that fix various security issues are now
available for Red Hat Enterprise Linux 2.1.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1  - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Description:

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.

Will Drewry of the Google Security Team reported several flaws in the way
libvorbis processed audio data. An attacker could create a carefully
crafted OGG audio file in such a way that it could cause an application
linked with libvorbis to crash, or execute arbitrary code when it was
opened. (CVE-2008-1419, CVE-2008-1420, CVE-2008-1423, CVE-2008-2009)

Moreover, additional OGG file sanity-checks have been added to prevent
possible exploitation of similar issues in the future.

Users of libvorbis are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues.

4. Solution:

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/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

440700 - CVE-2008-1419 vorbis: zero-dim codebooks can cause crash, infinite loop or heap overflow
440706 - CVE-2008-1420 vorbis: integer overflow in partvals computation
440709 - CVE-2008-1423 vorbis: integer oveflow caused by huge codebooks
444443 - CVE-2008-2009 vorbis: insufficient validation of Huffman tree causing memory corruption in _make_decode_tree()

6. Package List:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

Source:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/libvorbis-1.0rc2-9.el2.src.rpm

i386:
libvorbis-1.0rc2-9.el2.i386.rpm
libvorbis-devel-1.0rc2-9.el2.i386.rpm

ia64:
libvorbis-1.0rc2-9.el2.ia64.rpm
libvorbis-devel-1.0rc2-9.el2.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/libvorbis-1.0rc2-9.el2.src.rpm

ia64:
libvorbis-1.0rc2-9.el2.ia64.rpm
libvorbis-devel-1.0rc2-9.el2.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/libvorbis-1.0rc2-9.el2.src.rpm

i386:
libvorbis-1.0rc2-9.el2.i386.rpm
libvorbis-devel-1.0rc2-9.el2.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/libvorbis-1.0rc2-9.el2.src.rpm

i386:
libvorbis-1.0rc2-9.el2.i386.rpm
libvorbis-devel-1.0rc2-9.el2.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1419
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1420
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1423
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2009
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.