---
title: CVE-2011-4063
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-2011-4063
---

# CVE-2011-4063

Publication date 21 October 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\_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before
1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables
during request parsing, which allows remote authenticated users to cause a
denial of service (daemon crash) via a malformed request.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 13.04 raring | Not affected |
| 12.10 quantal | Not affected |
| 12.04 LTS precise | Not affected |
| 11.10 oneiric | Ignored end of life |
| 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 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-2011-4063#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-2011-012.html> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4063)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4063)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4063)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4063)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-4063>