Ubuntu Security Notice USN-498-1
16th August, 2007
libvorbis vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Details
David Thiel discovered that libvorbis did not correctly verify the size
of certain headers, and did not correctly clean up a broken stream.
If a user were tricked into processing a specially crafted Vorbis stream,
a remote attacker could execute arbitrary code with the user's privileges.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.04:
- libvorbis0a 1.1.2.dfsg-1.2ubuntu2
- Ubuntu 6.10:
- libvorbis0a 1.1.2-1ubuntu1.2
- Ubuntu 6.06 LTS:
- libvorbis0a 1.1.2-0ubuntu2.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.