---
title: "CVE-2011-1147\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-2011-1147?format=md
keywords: index, follow
---

# CVE-2011-1147

Publication date 15 March 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Multiple stack-based and heap-based buffer overflows in the (1)
decode\_open\_type and (2) udptl\_rx\_packet functions in main/udptl.c in
Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22,
1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x
before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38
support is enabled, allow remote attackers to cause a denial of service
(crash) and possibly execute arbitrary code via a crafted UDPTL packet.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 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 |
| 9.10 karmic | Ignored end of life |
| 8.04 LTS hardy | Ignored end of life |
| 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)
* [Patch details](https://ubuntu.com/security/CVE-2011-1147?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-2011-002-1.6.2.diff> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1147)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-1147)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-1147)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-1147)

### Other references

* <http://downloads.asterisk.org/pub/security/AST-2011-002.html>
* <https://www.cve.org/CVERecord?id=CVE-2011-1147>