libtheora: Arbitrary code execution

Background

libtheora is the reference implementation of Theora, a free and open video compression format from the Xiph.org Foundation.

Description

An integer overflow flaw has been discovered in libtheora.

Impact

A remote attacker could execute arbitrary code or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All libtheora users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-libs/libtheora-1.1.1"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying some of these packages.