Ubuntu Security Notice USN-825-1
24th August, 2009
libvorbis vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
Software description
- libvorbis
Details
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 execute
arbitrary code with the user's privileges. (CVE-2009-2663)
USN-682-1 provided updated libvorbis packages to fix multiple security
vulnerabilities. The upstream security patch to fix CVE-2008-1420
introduced a regression when reading sound files encoded with libvorbis
1.0beta1. This update corrects the problem.
Original advisory details:
It was discovered that libvorbis did not correctly handle certain
malformed sound files. If a user were tricked into opening a specially
crafted sound file with an application that uses libvorbis, an attacker
could execute arbitrary code with the user's privileges. (CVE-2008-1420)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.04:
- libvorbis0a 1.2.0.dfsg-3.1ubuntu0.9.04.1
- Ubuntu 8.10:
- libvorbis0a 1.2.0.dfsg-3.1ubuntu0.8.10.1
- Ubuntu 8.04 LTS:
- libvorbis0a 1.2.0.dfsg-2ubuntu0.2
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.