GLSA-200802-11 : Asterisk: Multiple vulnerabilities

High Nessus Plugin ID 31294


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


The remote host is affected by the vulnerability described in GLSA-200802-11 (Asterisk: Multiple vulnerabilities)

Multiple vulnerabilities have been found in Asterisk:
Russel Bryant reported a stack-based buffer overflow in the IAX2 channel driver (chan_iax2) when bridging calls between chan_iax2 and any channel driver that uses RTP for media (CVE-2007-3762).
Chris Clark and Zane Lackey (iSEC Partners) reported a NULL pointer dereference in the IAX2 channel driver (chan_iax2) (CVE-2007-3763).
Will Drewry (Google Security) reported a vulnerability in the Skinny channel driver (chan_skinny), resulting in an overly large memcpy (CVE-2007-3764).
Will Drewry (Google Security) reported a vulnerability in the IAX2 channel driver (chan_iax2), that does not correctly handle unauthenticated transactions using a 3-way handshake (CVE-2007-4103).
Impact :

By sending a long voice or video RTP frame, a remote attacker could possibly execute arbitrary code on the target machine. Sending specially crafted LAGRQ or LAGRP frames containing information elements of IAX frames, or a certain data length value in a crafted packet, or performing a flood of calls not completing a 3-way handshake, could result in a Denial of Service.
Workaround :

There is no known workaround at this time.


All Asterisk users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/asterisk-1.2.17-r1'

See Also

Plugin Details

Severity: High

ID: 31294

File Name: gentoo_GLSA-200802-11.nasl

Version: 1.15

Type: local

Published: 2008/02/27

Updated: 2018/07/11

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:asterisk, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2008/02/26

Vulnerability Publication Date: 2007/07/17

Reference Information

CVE: CVE-2007-3762, CVE-2007-3763, CVE-2007-3764, CVE-2007-4103

GLSA: 200802-11