---
title: "CVE-2011-2161\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-2011-2161?format=md
keywords: index, follow
---

# CVE-2011-2161

Publication date 20 May 2011

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

Toggle side navigation

## Description

The ape\_read\_header function in ape.c in libavformat in FFmpeg before
0.5.4, as used in MPlayer, VideoLAN VLC media player, and other products,
allows remote attackers to cause a denial of service (application crash)
via an APE (aka Monkey's Audio) file that contains a header but no frames.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-2161?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ffmpeg | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Fixed 4:0.6-2ubuntu6.2 |
| 10.04 LTS lucid | Fixed 4:0.5.1-1ubuntu1.2 |
| 8.04 LTS hardy | Ignored end of life |
| 6.06 LTS dapper | Ignored end of life |
| ffmpeg-extra | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Fixed 4:0.6-2ubuntu3.3 |
| 10.04 LTS lucid | Fixed 4:0.5.1-1ubuntu1.3 |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| libav | 11.10 oneiric | Not affected |
| 11.04 natty | Not affected |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| libav-extra | 11.10 oneiric | Not affected |
| 11.04 natty | Not affected |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |

---

* [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-2011-2161?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

ffmpeg-extra in multiverse needs to have matching version
PoC: http://packetstorm.linuxsecurity.com/1103-exploits/vlc105-dos.txt

### 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 |
| --- | --- |
| ffmpeg | * Upstream:   <http://git.videolan.org/?p=ffmpeg.git;a=commit;h=18c5fe919f4b1818ebdf405812c5a2d16174688f> * Upstream:   <http://git.videolan.org/?p=ffmpeg.git;a=commit;h=f17b89278709423b7eb76d7ed5eec5f82df57329> |
| libav | * Upstream:   <http://git.libav.org/?p=libav.git;a=commit;h=8312e3fc9041027a33c8bc667bb99740fdf41dd5> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2161)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2161)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2161)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2161)

### Related Ubuntu Security Notices (USN)

+ [USN-1209-1](https://usn.ubuntu.com/USN-1209-1)
+ FFmpeg vulnerabilities
+ 19 September 2011

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-2161>