libvorbis: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200909-02 / libvorbis
Release Date	September 07, 2009
Latest Revision	September 07, 2009: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/libvorbis	< 1.2.3	>= 1.2.3	All supported architectures

Related bugreports: #280590

Synopsis

A processing error in libvorbis might result in the execution of arbitrary code or a Denial of Service.

2. Impact Information

Background

libvorbis is the reference implementation of the Xiph.org Ogg Vorbis audio file format. It is used by many applications for playback of Ogg Vorbis files.

Description

Lucas Adamski reported that libvorbis does not correctly process file headers, related to static mode headers and encoding books.

Impact

A remote attacker could entice a user to play a specially crafted OGG Vorbis file using an application that uses libvorbis, possibly resulting in the execution of arbitrary code with the privileges of the user running the application, or a Denial of Service.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All libvorbis users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libvorbis-1.2.3"

4. References

CVE-2009-2663

Page updated September 07, 2009

Summary: This is a Gentoo Linux Security Advisory

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