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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200606-15">
<title>Asterisk: IAX2 video frame buffer overflow</title>
<synopsis>
Asterisk contains a bug in the IAX2 channel driver making it vulnerable to
the remote execution of arbitrary code.
</synopsis>
<product type="ebuild">asterisk</product>
<announced>June 14, 2006</announced>
<revised>June 14, 2006: 01</revised>
<bug>135680</bug>
<access>remote</access>
<affected>
<package name="net-misc/asterisk" auto="yes" arch="*">
<unaffected range="ge">1.0.11_p1</unaffected>
<vulnerable range="lt">1.0.11_p1</vulnerable>
</package>
</affected>
<background>
<p>
Asterisk is an open source implementation of a telephone private branch
exchange (PBX).
</p>
</background>
<description>
<p>
Asterisk fails to properly check the length of truncated video frames
in the IAX2 channel driver which results in a buffer overflow.
</p>
</description>
<impact type="high">
<p>
An attacker could exploit this vulnerability by sending a specially
crafted IAX2 video stream resulting in the execution of arbitrary code
with the permissions of the user running Asterisk.
</p>
</impact>
<workaround>
<p>
Disable public IAX2 support.
</p>
</workaround>
<resolution>
<p>
All Asterisk users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-misc/asterisk-1.0.11_p1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2898">CVE-2006-2898</uri>
<uri link="http://www.coresecurity.com/common/showdoc.php?idx=547&amp;idxseccion=10">Corelabs Asterisk PBX truncated video frame vulnerability advisory</uri>
</references>
<metadata tag="requester" timestamp="Thu, 08 Jun 2006 10:46:16 +0000">
falco
</metadata>
<metadata tag="submitter" timestamp="Fri, 09 Jun 2006 08:21:48 +0000">
jaervosz
</metadata>
<metadata tag="bugReady" timestamp="Wed, 14 Jun 2006 09:36:11 +0000">
jaervosz
</metadata>
</glsa>