libvpx: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201101-03 / libvpx
Release Date	January 15, 2011
Latest Revision	January 15, 2011: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/libvpx	< 0.9.5	>= 0.9.5	All supported architectures

Related bugreports: #345559

Synopsis

Timothy B. Terriberry discovered that libvpx contains an integer overflow vulnerability in the processing of video streams that may allow user-assisted execution of arbitrary code.

2. Impact Information

Background

libvpx is the VP8 codec SDK used to encode and decode video streams, typically within a WebM format media file.

Description

libvpx is vulnerable to an integer overflow vulnerability when processing crafted VP8 video streams.

Impact

A remote attacker could entice a user to open a specially crafted media file, 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 libvpx users should upgrade to the latest stable version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libvpx-0.9.5"

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

4. References

CVE-2010-4203

Page updated January 15, 2011

Summary: This is a Gentoo Linux Security Advisory

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