<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-2013-005: Remote Crash when Invalid SDP is sent in SIP Request<br>To: <a href="mailto:asterisk-dev@lists.digium.com">asterisk-dev@lists.digium.com</a><br><br><br> Asterisk Project Security Advisory - AST-2013-005<br>
<br>
Product Asterisk<br>
Summary Remote Crash when Invalid SDP is sent in SIP Request<br>
Nature of Advisory Remote Crash<br>
Susceptibility Remote Unauthenticated Sessions<br>
Severity Major<br>
Exploits Known None<br>
Reported On July 03, 2013<br>
Reported By Walter Doekes, OSSO B.V.<br>
Posted On August 27, 2013<br>
Last Updated On August 27, 2013<br>
Advisory Contact Matthew Jordan <mjordan 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 invalid SDP is sent in a SIP<br>
request that defines media descriptions before connection<br>
information. The handling code incorrectly attempts to<br>
reference the socket address information even though that<br>
information has not yet been set.<br>
<br>
Resolution This patch adds checks when handling the various media<br>
descriptions that ensures the media descriptions are handled<br>
only if we have connection information suitable for that<br>
media.<br>
<br>
Thanks to Walter Doekes of OSSO B.V. for finding, reporting,<br>
testing, and providing the fix for this problem.<br>
<br>
Affected Versions<br>
Product Release Series<br>
Asterisk Open Source 1.8.x All Versions<br>
Asterisk Open Source 10.x All Versions<br>
Asterisk Open Source 11.x All Versions<br>
Certified Asterisk 1.8.15 All Versions<br>
Certified Asterisk 11.2 All Versions<br>
Asterisk with Digiumphones 10.x-digiumphones All Versions<br>
<br>
Corrected In<br>
Product Release<br>
Asterisk Open Source 1.8.23.1, 10.12.3, 11.5.1<br>
Certified Asterisk 1.8.15-cert3, 11.2-cert2<br>
Asterisk with Digiumphones 10.12.3-digiumphones<br>
<br>
Patches<br>
SVN URL Revision<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-1.8.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-1.8.diff</a> Asterisk 1.8<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-10.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-10.diff</a> Asterisk 10<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-10-digiumphones.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-10-digiumphones.diff</a> Asterisk<br>
10-digiumphones<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-11.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-11.diff</a> Asterisk 11<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-1.8.15.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-1.8.15.diff</a> Certified<br>
Asterisk 1.8.15<br>
<a href="http://downloads.asterisk.org/pub/security/AST-2013-005-11.2.diff" target="_blank">http://downloads.asterisk.org/pub/security/AST-2013-005-11.2.diff</a> Certified<br>
Asterisk 11.2<br>
<br>
Links <a href="https://issues.asterisk.org/jira/browse/ASTERISK-22007" target="_blank">https://issues.asterisk.org/jira/browse/ASTERISK-22007</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-2013-005.pdf" target="_blank">http://downloads.digium.com/pub/security/AST-2013-005.pdf</a> and<br>
<a href="http://downloads.digium.com/pub/security/AST-2013-005.html" target="_blank">http://downloads.digium.com/pub/security/AST-2013-005.html</a><br>
<br>
Revision History<br>
Date Editor Revisions Made<br>
2013-08-27 Matt Jordan Initial Revision<br>
<br>
Asterisk Project Security Advisory - AST-2013-005<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>
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