medium
5
CWE
476 NVD-CWE-Other
Advisory Published
Updated

CVE-2007-3763: Null Pointer Dereference

First published: Wed Jul 18 2007(Updated: )

The IAX2 channel driver (chan_iax2) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a crafted (1) LAGRQ or (2) LAGRP frame that contains information elements of IAX frames, which results in a NULL pointer dereference when Asterisk does not properly set an associated variable.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Asterisk=1.0.11
Asterisk=1.2.14
Asterisk=1.2.16
Asterisk=1.2.5
Asterisk=b.1.3.3
Digium AsteriskNOW=beta_6
Asterisk=1.0.8
Digium AsteriskNOW=beta_5
Asterisk=1.4_beta
Asterisk=1.2.6
Asterisk=1.2.7
Asterisk=1.2.0_beta1
Asterisk=1.0.12
Asterisk=b.2.2.0
Asterisk=1.2.8
Asterisk=1.4.2
Asterisk=1.2.15
Digium Asterisk Appliance Developer Kit<=0.4
Asterisk=1.2.17
Asterisk=1.2.11
Asterisk=1.2.12
Asterisk=1.0.6
Asterisk=1.0.9
Asterisk=b.1.3.2
Asterisk=1.2.10
Asterisk=1.2.9
Asterisk=1.0.7
Asterisk=1.2.13
Asterisk=1.2.0_beta2
Asterisk=1.0
Asterisk=1.4.1
Asterisk=1.4.4_2007-04-27
Asterisk=1.0.10
Asterisk=a
Digium Asterisk s800i Appliance=1.0
Digium Asterisk s800i Appliance=1.0.1

Remedy

http://ftp.digium.com/pub/asa/ASA-2007-015.pdf

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2007-3763?

    The severity of CVE-2007-3763 is considered critical due to its ability to cause a denial of service.

  • How do I fix CVE-2007-3763?

    To fix CVE-2007-3763, upgrade to Asterisk version 1.2.22, 1.4.8 or later, or apply relevant patches.

  • What software is affected by CVE-2007-3763?

    CVE-2007-3763 affects multiple versions of Asterisk, including versions before 1.2.22 and certain Business Edition and AsteriskNOW versions.

  • What types of attacks are possible with CVE-2007-3763?

    CVE-2007-3763 allows remote attackers to perform denial of service attacks by exploiting crafted requests.

  • Which Asterisk versions should be avoided due to CVE-2007-3763?

    Asterisk versions 1.0.x, 1.2.x, and any versions prior to 1.2.22 should be avoided due to vulnerabilities associated with CVE-2007-3763.

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