---
title: "CVE-2007-3763\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2007-3763?format=md
keywords: index, follow
---

# CVE-2007-3763

Publication date 18 July 2007

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

Toggle side navigation

## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 9.10 karmic | Fixed 1:1.4.8dfsg-1 |
| 9.04 jaunty | Fixed 1:1.4.8dfsg-1 |
| 8.10 intrepid | Fixed 1:1.4.8dfsg-1 |
| 8.04 LTS hardy | Fixed 1:1.4.8dfsg-1 |
| 7.10 gutsy | Fixed 1:1.4.8dfsg-1 |
| 7.04 feisty | Ignored end of life, was needed |
| 6.10 edgy | Ignored end of life, was needed |
| 6.06 LTS dapper | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3763)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2007-3763)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2007-3763)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2007-3763)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2007-3763>