Ubuntu Security Notice USN-861-1
24th November, 2009
libvorbis vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.10
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
Software description
- libvorbis
Details
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)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.10:
- libvorbis0a 1.2.0.dfsg-6ubuntu0.1
- Ubuntu 9.04:
- libvorbis0a 1.2.0.dfsg-3.1ubuntu0.9.04.2
- Ubuntu 8.10:
- libvorbis0a 1.2.0.dfsg-3.1ubuntu0.8.10.2
- Ubuntu 8.04 LTS:
- libvorbis0a 1.2.0.dfsg-2ubuntu0.3
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system upgrade you need to restart any applications that
use libvorbis, such as Totem and gtkpod, to effect the necessary changes.