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libvpx: User-assisted execution of arbitrary code


1.  Gentoo Linux Security Advisory

Version Information

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


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


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


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


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


There is no known workaround at this time.


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


Page updated January 15, 2011

Summary: This is a Gentoo Linux Security Advisory

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