<?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>