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USN-498-1: libvorbis vulnerabilities

16 August 2007

libvorbis vulnerabilities



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 versions:

Ubuntu 7.04
  • libvorbis0a - 1.1.2.dfsg-1.2ubuntu2
Ubuntu 6.10
  • libvorbis0a - 1.1.2-1ubuntu1.2
Ubuntu 6.06
  • libvorbis0a - 1.1.2-0ubuntu2.2

In general, a standard system upgrade is sufficient to effect the
necessary changes.