---
title: "CVE-2011-2535\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-2011-2535?format=md
keywords: index, follow
---

# CVE-2011-2535

Publication date 6 July 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

chan\_iax2.c in the IAX2 channel driver in Asterisk Open Source 1.4.x before
1.4.41.1, 1.6.2.x before 1.6.2.18.1, and 1.8.x before 1.8.4.3, and Asterisk
Business Edition C.3 before C.3.7.3, accesses a memory address contained in
an option control frame, which allows remote attackers to cause a denial of
service (daemon crash) or possibly have unspecified other impact via a
crafted frame.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 12.10 quantal | Not affected |
| 12.04 LTS precise | Not affected |
| 11.10 oneiric | Not affected |
| 11.04 natty | Fixed 1:1.6.2.9-2ubuntu2.1 |
| 10.10 maverick | Fixed 1:1.6.2.7-1ubuntu1.2 |
| 10.04 LTS lucid | Fixed 1:1.6.2.5-0ubuntu1.4 |
| 8.04 LTS hardy | 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)
* [Patch details](https://ubuntu.com/security/CVE-2011-2535?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| asterisk | * Upstream:   <http://downloads.asterisk.org/pub/security/AST-2011-010-1.4.diff> * Upstream:   <http://downloads.asterisk.org/pub/security/AST-2011-010-1.6.2.diff> * Upstream:   <http://downloads.asterisk.org/pub/security/AST-2011-010-1.8.diff> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2535)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2535)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2535)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2535)

### Other references

* <http://downloads.asterisk.org/pub/security/AST-2011-010.html>
* <https://www.cve.org/CVERecord?id=CVE-2011-2535>