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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200703-14">
<title>Asterisk: SIP Denial of Service</title>
Asterisk is vulnerable to Denial of Service in the SIP channel.
<product type="ebuild">asterisk</product>
<announced>March 16, 2007</announced>
<revised>March 16, 2007: 01</revised>
<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>
Asterisk is an open source implementation of a telephone private branch
exchange (PBX).
The MU Security Research Team discovered that Asterisk contains a
NULL-pointer dereferencing error in the SIP channel when handling
request messages.
<impact type="normal">
A remote attacker could cause an Asterisk server listening for SIP
messages to crash by sending a specially crafted SIP request message.
There is no known workaround at this time.
All Asterisk users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose net-misc/asterisk</code>
Note: Asterisk 1.0.x is no longer supported upstream so users should
consider upgrading to Asterisk 1.2.x.
<uri link="">CVE-2007-1306</uri>
<uri link="">MU-200703-01</uri>
<metadata tag="submitter" timestamp="Fri, 16 Mar 2007 07:59:58 +0000">
<metadata tag="bugReady" timestamp="Fri, 16 Mar 2007 10:36:56 +0000">