USN-861-1: libvorbis vulnerabilities

24 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 versions:

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.

References