---
title: "CVE-2007-3304\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-2007-3304?format=md
keywords: index, follow
---

# CVE-2007-3304

Publication date 20 June 2007

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

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

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## Description

Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows
local users to cause a denial of service by modifying the worker\_score and
process\_score arrays to reference an arbitrary process ID, which is sent a
SIGUSR1 signal from the master process, aka "SIGUSR1 killer."

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apache2 | 7.04 feisty | Fixed 2.2.3-3.2ubuntu0.1 |
| 6.10 edgy | Fixed 2.0.55-4ubuntu4.1 |
| 6.06 LTS dapper | Fixed 2.0.55-4ubuntu2.2 |

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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-2007-3304)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2007-3304)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2007-3304)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2007-3304)

### Related Ubuntu Security Notices (USN)

+ [USN-499-1](https://usn.ubuntu.com/USN-499-1)
+ Apache vulnerabilities
+ 17 August 2007

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2007-3304>