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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200703-14">
<title>Asterisk: SIP Denial of service</title>
<synopsis>
Asterisk is vulnerable to Denial of Service in the SIP channel.
</synopsis>
<product type="ebuild">asterisk</product>
<announced>2007-03-16</announced>
<revised count="01">2007-03-16</revised>
<bug>169616</bug>
<access>remote</access>
<affected>
<package name="net-misc/asterisk" auto="yes" arch="*">
<unaffected range="ge">1.2.14-r1</unaffected>
<unaffected range="rge">1.0.12-r1</unaffected>
<vulnerable range="lt">1.2.14-r1</vulnerable>
</package>
</affected>
<background>
<p>
Asterisk is an open source implementation of a telephone private branch
exchange (PBX).
</p>
</background>
<description>
<p>
The MU Security Research Team discovered that Asterisk contains a
NULL-pointer dereferencing error in the SIP channel when handling
request messages.
</p>
</description>
<impact type="normal">
<p>
A remote attacker could cause an Asterisk server listening for SIP
messages to crash by sending a specially crafted SIP request message.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Asterisk users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose net-misc/asterisk</code>
<p>
Note: Asterisk 1.0.x is no longer supported upstream so users should
consider upgrading to Asterisk 1.2.x.
</p>
</resolution>
<references>
<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1306">CVE-2007-1306</uri>
<uri link="http://labs.musecurity.com/advisories/MU-200703-01.txt">MU-200703-01</uri>
</references>
<metadata tag="submitter" timestamp="2007-03-16T07:59:58Z">
jaervosz
</metadata>
<metadata tag="bugReady" timestamp="2007-03-16T10:36:56Z">
falco
</metadata>
</glsa>
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