CVE-2007-3763 Null dereference in n/a
Remote attackers can crash Asterisk PBX by sending crafted IAX2 frames, causing a denial of service via null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2007-3763?
CVE-2007-3763 is a medium-severity vulnerability in n/a, published on 18 Jul 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2007-3763?
It affects 4 products.
Products include Asterisk Asterisk, Asterisk Asterisk Appliance Developer Kit, Asterisk Asterisknow, Asterisk S800i Appliance.
How do I fix CVE-2007-3763?
Upgrade to a fixed version.
Is CVE-2007-3763 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-3763 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2007-3763, GHSA-822c-3x4j-h56q.