GLSA-200704-01 : Asterisk: Two SIP Denial of Service vulnerabilities

This script is Copyright (C) 2007-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200704-01
(Asterisk: Two SIP Denial of Service vulnerabilities)

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.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200704-01.xml

Solution :

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.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 24934 (gentoo_GLSA-200704-01.nasl)

Bugtraq ID:

CVE ID: CVE-2007-1561
CVE-2007-1594