<div dir="ltr">psc<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Asterisk Security Team</b> <span dir="ltr"><<a href="mailto:security@asterisk.org">security@asterisk.org</a>></span><br>
Date: 2013/8/27<br>Subject: [asterisk-dev] AST-2013-004: Remote Crash From Late Arriving SIP ACK With SDP<br>To: <a href="mailto:asterisk-dev@lists.digium.com">asterisk-dev@lists.digium.com</a><br><br><br> Asterisk Project Security Advisory - AST-2013-004<br>
<br>
Product Asterisk<br>
Summary Remote Crash From Late Arriving SIP ACK With SDP<br>
Nature of Advisory Remote Crash<br>
Susceptibility Remote Unauthenticated Sessions<br>
Severity Major<br>
Exploits Known None<br>
Reported On February 11, 2013<br>
Reported By Colin Cuthbertson<br>
Posted On August 27, 2013<br>
Last Updated On August 27, 2013<br>
Advisory Contact Joshua Colp <jcolp AT digium DOT com><br>
CVE Name Pending<br>
<br>
Description A remotely exploitable crash vulnerability exists in the<br>
SIP channel driver if an ACK with SDP is received after the<br>
channel has been terminated. The handling code incorrectly<br>
assumes that the channel will always be present.<br>
<br>
Resolution A check has now been added which only parses SDP and applies<br>
it if an Asterisk channel is present.<br>
<br>
Note that Walter Doekes, OSSO B.V., is responsible for<br>
diagnosing and providing the fix for this issue.<br>
<br>
Affected Versions<br>
Product Release Series<br>
Asterisk Open Source 1.8.x 1.8.17.0 and above<br>
Asterisk Open Source 11.x All versions<br>
Certified Asterisk 1.8.15 All versions<br>
Certified Asterisk 11.2 All versions<br>
<br>
Corrected In<br>
Product Release<br>
Asterisk Open Source 1.8.23.1, 11.5.1<br>
Certified Asterisk 1.8.15-cert3, 11.2-cert2<br>
<br>
Patches<br>
SVN URL Revision<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-004-1.8.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-004-1.8.diff</a> Asterisk<br>
1.8<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-004-11.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-004-11.diff</a> Asterisk<br>
11<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-004-1.8.15-cert.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-004-1.8.15-cert.diff</a> Certified<br>
Asterisk<br>
1.8.15<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-004-11.2-cert.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-004-11.2-cert.diff</a> Certified<br>
Asterisk<br>
11.1<br>
<br>
Links <a href="https://issues.asterisk.org/jira/browse/ASTERISK-21064" target="_blank">https://issues.asterisk.org/jira/browse/ASTERISK-21064</a><br>
<br>
Asterisk Project Security Advisories are posted at<br>
<a href="http://www.asterisk.org/security" target="_blank">http://www.asterisk.org/security</a><br>
<br>
This document may be superseded by later versions; if so, the latest<br>
version will be posted at<br>
<a href="http://downloads.digium.com/pub/security/AST-2013-004.pdf" target="_blank">http://downloads.digium.com/pub/security/AST-2013-004.pdf</a> and<br>
<a href="http://downloads.digium.com/pub/security/AST-2013-004.html" target="_blank">http://downloads.digium.com/pub/security/AST-2013-004.html</a><br>
<br>
Revision History<br>
Date Editor Revisions Made<br>
2013-08-22 Joshua Colp Initial revision.<br>
<br>
Asterisk Project Security Advisory - AST-2013-004<br>
Copyright (c) 2013 Digium, Inc. All Rights Reserved.<br>
Permission is hereby granted to distribute and publish this advisory in its<br>
original, unaltered form.<br>
<br>
<br>
--<br>
_____________________________________________________________________<br>
-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" target="_blank">http://www.api-digital.com</a> --<br>
<br>
asterisk-dev mailing list<br>
To UNSUBSCRIBE or update options visit:<br>
<a href="http://lists.digium.com/mailman/listinfo/asterisk-dev" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-dev</a><br>
</div><br><br clear="all"><div><br></div>-- <br><span style="font-family:trebuchet ms,sans-serif">Sylvio Jollenbeck<br><font size="1"><a href="http://www.hosannatecnologia.com.br/" target="_blank">www.hosannatecnologia.com.br</a></font></span><br>
<img src="http://www.hosannatecnologia.com.br/pixel.fw.png"><br>
</div>