---
title: "CVE-2009-1890\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-2009-1890?format=md
keywords: index, follow
---

# CVE-2009-1890

Publication date 5 July 2009

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

The stream\_reqbody\_cl function in mod\_proxy\_http.c in the mod\_proxy module
in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured,
does not properly handle an amount of streamed data that exceeds the
Content-Length value, which allows remote attackers to cause a denial of
service (CPU consumption) via crafted requests.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2009-1890?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apache2 | 9.04 jaunty | Fixed 2.2.11-2ubuntu2.2 |
| 8.10 intrepid | Fixed 2.2.9-7ubuntu3.2 |
| 8.04 LTS hardy | Fixed 2.2.8-1ubuntu0.10 |
| 6.06 LTS dapper | Not affected |

---

* [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-2009-1890?format=md#patch-details)

## Notes

---

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

couldn't reproduce on dapper, code is different

### 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 |
| --- | --- |
| apache2 | * Upstream:   <http://svn.apache.org/viewvc?view=rev&revision=790587> * Upstream:   <http://svn.apache.org/viewvc?view=rev&revision=790589> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1890)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-1890)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-1890)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-1890)

### Related Ubuntu Security Notices (USN)

+ [USN-802-1](https://usn.ubuntu.com/USN-802-1)
+ Apache vulnerabilities
+ 13 July 2009

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2009-1890>