---
title: "CVE-2009-2699\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-2009-2699?format=md
keywords: index, follow
---

# CVE-2009-2699

Publication date 13 October 2009

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2009-2699?format=md#impact-score)

Toggle side navigation

## Description

The Solaris pollset feature in the Event Port backend in poll/unix/port.c
in the Apache Portable Runtime (APR) library before 1.3.9, as used in the
Apache HTTP Server before 2.2.14 and other products, does not properly
handle errors, which allows remote attackers to cause a denial of service
(daemon hang) via unspecified HTTP requests, related to the prefork and
event MPMs.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2009-2699?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apr | 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 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)

## Notes

---

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

does not affect Linux

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2699)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-2699)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-2699)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-2699)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2009-2699>