Test ID:	1.3.6.1.4.1.25623.1.0.9999992
Category:	Denial of Service
Title:	Asterisk PBX SDP Header Overflow Vulnerability
Summary:	The remote Asterisk PBX SIP server is affected by an overflow; vulnerability.
Description:	Summary: The remote Asterisk PBX SIP server is affected by an overflow vulnerability. Vulnerability Insight: The application installed suffers from a remote overflow in the SIP service resulting in a denial of service. An attacker can send a malformed INVITE packet with two SDP headers, within the first header an existing IP address in the 'c=' variable and in the second SDP header a NOT existing IP address in 'c='. Vulnerability Impact: This results in a segmentation fault in 'chan_sip.c' crashing the Asterisk PBX service. Solution: Update to version 1.4.2/1.2.17 or later. CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2007-1561 BugTraq ID: 23031 http://www.securityfocus.com/bid/23031 Bugtraq: 20070321 Two new DoS Vulnerabilities in Asterisk Fixed (Google Search) http://www.securityfocus.com/archive/1/463434/100/0/threaded Debian Security Information: DSA-1358 (Google Search) http://www.debian.org/security/2007/dsa-1358 http://marc.info/?l=full-disclosure&m=117432783011737&w=2 http://security.gentoo.org/glsa/glsa-200704-01.xml http://voipsa.org/pipermail/voipsec_voipsa.org/2007-March/002275.html http://www.osvdb.org/34479 http://www.securitytracker.com/id?1017794 http://secunia.com/advisories/24564 http://secunia.com/advisories/24719 http://secunia.com/advisories/25582 SuSE Security Announcement: SUSE-SA:2007:034 (Google Search) http://www.novell.com/linux/security/advisories/2007_34_asterisk.html http://www.vupen.com/english/advisories/2007/1039 XForce ISS Database: asterisk-sip-invite-dos(33068) https://exchange.xforce.ibmcloud.com/vulnerabilities/33068
Copyright	Copyright (C) 2008 Ferdy Riphagen

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