---
title: "CVE-2011-0996\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-2011-0996?format=md
keywords: index, follow
---

# CVE-2011-0996

Publication date 13 April 2011

Last updated 24 July 2024

---

Ubuntu priority

**High**

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

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## Description

dhcpcd before 5.2.12 allows remote attackers to execute arbitrary commands
via shell metacharacters in a hostname obtained from a DHCP message.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| dhcpcd | 12.10 quantal | Fixed 1:3.2.3-9ubuntu1 |
| 12.04 LTS precise | Fixed 1:3.2.3-9ubuntu1 |
| 11.10 oneiric | Fixed 1:3.2.3-9ubuntu0.1 |
| 11.04 natty | Fixed 1:3.2.3-7ubuntu0.11.04.1 |
| 10.10 maverick | Fixed 1:3.2.3-7ubuntu0.10.10.1 |
| 10.04 LTS lucid | Fixed 1:3.2.3-5ubuntu0.1 |
| 9.10 karmic | Ignored end of life |
| 8.04 LTS hardy | Ignored end of life |
| 6.06 LTS dapper | Ignored end of life |
| dhcpcd5 | 12.10 quantal | Not affected |
| 12.04 LTS precise | Not affected |
| 11.10 oneiric | Not affected |
| 11.04 natty | Ignored end of life |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | 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-2011-0996?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 |
| --- | --- |
| dhcpcd5 | * Upstream:   <http://roy.marples.name/projects/dhcpcd/changeset/c317b39786ac6c3a939dc711db7c78cf099859fd> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0996)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-0996)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-0996)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-0996)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-0996>