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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201101-03">
<title>libvpx: User-assisted execution of arbitrary code</title>
<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.
</synopsis>
<product type="ebuild">libvpx</product>
<announced>January 15, 2011</announced>
<revised>January 15, 2011: 01</revised>
<bug>345559</bug>
<access>remote</access>
<affected>
<package name="media-libs/libvpx" auto="yes" arch="*">
<unaffected range="ge">0.9.5</unaffected>
<vulnerable range="lt">0.9.5</vulnerable>
</package>
</affected>
<background>
<p>
libvpx is the VP8 codec SDK used to encode and decode video streams,
typically within a WebM format media file.
</p>
</background>
<description>
<p>
libvpx is vulnerable to an integer overflow vulnerability when
processing crafted VP8 video streams.
</p>
</description>
<impact type="normal">
<p>
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.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All libvpx users should upgrade to the latest stable version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=media-libs/libvpx-0.9.5&quot;</code>
<p>
Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.
</p>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4203">CVE-2010-4203</uri>
</references>
<metadata tag="requester" timestamp="Mon, 13 Dec 2010 01:15:02 +0000">
underling
</metadata>
<metadata tag="submitter" timestamp="Wed, 05 Jan 2011 05:26:31 +0000">
underling
</metadata>
<metadata tag="bugReady" timestamp="Fri, 07 Jan 2011 16:42:00 +0000">
underling
</metadata>
</glsa>