National Cyber Awareness System

Vulnerability Summary for CVE-2007-4103

Overview

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: SECUNIA

Name: 26274

Type: Advisory; Patch Information

Hyperlink:http://secunia.com/advisories/26274

External Source: CONFIRM

Name: http://ftp.digium.com/pub/asa/ASA-2007-018.pdf

Type: Patch Information

Hyperlink:http://ftp.digium.com/pub/asa/ASA-2007-018.pdf

External Source: VUPEN

Name: ADV-2007-2701

Hyperlink:http://www.vupen.com/english/advisories/2007/2701

External Source: SECTRACK

Name: 1018472

Hyperlink:http://www.securitytracker.com/id?1018472

External Source: BUGTRAQ

Name: 20070729 ASA-2007-018: Resource exhaustion vulnerability in IAX2 channel driver

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/475069/100/0/threaded

External Source: OSVDB

Name: 38197

Hyperlink:http://osvdb.org/38197

External Source: BID

Name: 24950

Hyperlink:http://www.securityfocus.com/bid/24950

External Source: SREASON

Name: 2960

Hyperlink:http://securityreason.com/securityalert/2960

External Source: GENTOO

Name: GLSA-200802-11

Hyperlink:http://security.gentoo.org/glsa/glsa-200802-11.xml

External Source: SECUNIA

Name: 29051

Hyperlink:http://secunia.com/advisories/29051

External Source: CONFIRM

Name: http://bugs.gentoo.org/show_bug.cgi?id=185713

Hyperlink:http://bugs.gentoo.org/show_bug.cgi?id=185713