---
title: "CVE-2011-4091\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-2011-4091?format=md
keywords: index, follow
---

# CVE-2011-4091

Publication date 10 February 2014

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

The libobby server in inc/server.hpp in libnet6 (aka net6) before 1.3.14
does not perform authentication before checking the user name, which allows
remote attackers to obtain sensitive information such as server-usage
patterns by a particular user and color preferences.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| net6 | 13.10 saucy | Not affected |
| 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 | Ignored end of life |
| 10.10 maverick | Ignored end of life |
| 10.04 LTS lucid | Ignored end of life |
| 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-2011-4091?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 |
| --- | --- |
| net6 | * Upstream:   <http://git.0x539.de/?p=net6.git;a=commitdiff;h=ac61d7fb42a1f977fb527e024bede319c4a9e169;hp=08c8e2261604c6fcbbaf62f9ae9d13f7015fcb9a> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4091)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4091)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4091)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4091)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-4091>
