USN-861-1

A security issue affects the following Ubuntu releases:

Ubuntu 8.04 LTS
Ubuntu 8.10
Ubuntu 9.04
Ubuntu 9.10

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 8.04 LTS:
libvorbis0a 1.2.0.dfsg-2ubuntu0.3

Ubuntu 8.10:
libvorbis0a 1.2.0.dfsg-3.1ubuntu0.8.10.2

Ubuntu 9.04:
libvorbis0a 1.2.0.dfsg-3.1ubuntu0.9.04.2

Ubuntu 9.10:
libvorbis0a 1.2.0.dfsg-6ubuntu0.1

After a standard system upgrade you need to restart any applications that
use libvorbis, such as Totem and gtkpod, to effect the necessary changes.

Details follow:

It was discovered that libvorbis did not correctly handle ogg files with
underpopulated Huffman trees. If a user were tricked into opening a
specially crafted ogg file with an application that uses libvorbis, an
attacker could cause a denial of service. (CVE-2008-2009)

It was discovered that libvorbis did not correctly handle certain malformed
ogg files. If a user were tricked into opening a specially crafted ogg file
with an application that uses libvorbis, an attacker could cause a denial
of service or possibly execute arbitrary code with the user's privileges.
(CVE-2009-3379)