---
title: "CVE-2011-4151\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-2011-4151?format=md
keywords: index, follow
---

# CVE-2011-4151

Publication date 20 October 2011

Last updated 24 July 2024

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Ubuntu priority

**Medium**

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

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## Description

The krb5\_db2\_lockout\_audit function in the Key Distribution Center (KDC) in
MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB)
back end is used, allows remote attackers to cause a denial of service
(assertion failure and daemon exit) via unspecified vectors, a different
vulnerability than CVE-2011-1528.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| krb5 | 11.10 oneiric | Not affected |
| 11.04 natty | Fixed 1.8.3+dfsg-5ubuntu2.2 |
| 10.10 maverick | Fixed 1.8.1+dfsg-5ubuntu0.8 |
| 10.04 LTS lucid | Fixed 1.8.1+dfsg-2ubuntu0.10 |
| 8.04 LTS hardy | Not affected |

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* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4151)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4151)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4151)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4151)

### Other references

* <http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt>
* <https://www.cve.org/CVERecord?id=CVE-2011-4151>