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[ GLSA 200704-01 ] Asterisk: Two SIP Denial of Service vulnerabilities
From: Sune Kloppenborg Jeppesen <jaervosz () gentoo org>
Date: Mon, 2 Apr 2007 21:50:09 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200704-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Asterisk: Two SIP Denial of Service vulnerabilities Date: April 02, 2007 Bugs: #171467 ID: 200704-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Asterisk is vulnerable to two Denial of Service issues in the SIP channel. Background ========== Asterisk is an open source implementation of a telephone private branch exchange (PBX). Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/asterisk < 1.2.14-r2 >= 1.2.14-r2 *>= 1.0.12-r2 Description =========== The Madynes research team at INRIA has discovered that Asterisk contains a null pointer dereferencing error in the SIP channel when handling INVITE messages. Furthermore qwerty1979 discovered that Asterisk 1.2.x fails to properly handle SIP responses with return code 0. Impact ====== A remote attacker could cause an Asterisk server listening for SIP messages to crash by sending a specially crafted SIP message or answering with a 0 return code. Workaround ========== There is no known workaround at this time. Resolution ========== All Asterisk users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose net-misc/asterisk Note: Asterisk 1.0.x is no longer supported upstream so users should consider upgrading to Asterisk 1.2.x. References ========== [ 1 ] CVE-2007-1561 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1561 [ 2 ] CVE-2007-1594 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1594 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-01.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5
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- [ GLSA 200704-01 ] Asterisk: Two SIP Denial of Service vulnerabilities Sune Kloppenborg Jeppesen (Apr 02)