What’s Vulnerable › Vulnerabilities

CVE-2007-3763

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 26.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2007-07-18 · updated 2026-06-16

Description

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.

Affected products

• Asterisk: 1.0, 1.0.6, 1.0.7, 1.0.8, 1.0.9, 1.0.10 (+25)
• Asterisk Appliance Developer Kit: through 0.4
• Asterisknow: beta_5, beta_6
• asterisk S800I Appliance: 1.0, 1.0.1

References

• http://bugs.gentoo.org/show_bug.cgi?id=185713
• http://ftp.digium.com/pub/asa/ASA-2007-015.pdf
• http://secunia.com/advisories/26099
• http://secunia.com/advisories/29051
• http://security.gentoo.org/glsa/glsa-200802-11.xml
• http://www.debian.org/security/2007/dsa-1358
• http://www.novell.com/linux/security/advisories/2007_15_sr.html
• http://www.securityfocus.com/bid/24950
• http://www.securitytracker.com/id?1018407
• http://www.vupen.com/english/advisories/2007/2563
• http://bugs.gentoo.org/show_bug.cgi?id=185713
• http://ftp.digium.com/pub/asa/ASA-2007-015.pdf

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