---
title: "CVE-2013-5704\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-2013-5704?format=md
keywords: index, follow
---

# CVE-2013-5704

Publication date 15 April 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 mod\_headers module in the Apache HTTP Server 2.2.22 allows remote
attackers to bypass "RequestHeader unset" directives by placing a header in
the trailer portion of data sent with chunked transfer coding. NOTE: the
vendor states "this is not a security issue in httpd as such."

[Read the notes from the security team](https://ubuntu.com/security/CVE-2013-5704?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apache2 | 14.10 utopic | Fixed 2.4.10-1ubuntu1.1 |
| 14.04 LTS trusty | Fixed 2.4.7-1ubuntu4.4 |
| 13.10 saucy | Ignored end of life |
| 12.10 quantal | Ignored end of life |
| 12.04 LTS precise | Fixed 2.2.22-1ubuntu1.8 |
| 10.04 LTS lucid | Fixed 2.2.14-5ubuntu8.15 |

---

* [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-2013-5704?format=md#patch-details)

## Notes

---

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

check for r1610814, r1610686, r1610707

### 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:   [bd34b9d](https://github.com/apache/httpd/commit/bd34b9d92894b7fc01810fc11a059fa30067e431#diff-381c180d963fb4507c77d80edb208224) * Upstream:   [6688f9d](https://github.com/apache/httpd/commit/6688f9d102ad29d6bb4167d690ee495d709e47b6) * Upstream:   [16e241e](https://github.com/apache/httpd/commit/16e241ed9f0482acfda30b115227101744ccbc2c) |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-5704)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-5704)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-5704)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-5704)

### Related Ubuntu Security Notices (USN)

+ [USN-2523-1](https://usn.ubuntu.com/USN-2523-1)
+ Apache HTTP Server vulnerabilities
+ 10 March 2015

### Other references

* <http://martin.swende.se/blog/HTTPChunked.html>
* <http://marc.info/?l=apache-httpd-dev&m=139636309822854&w=2>
* <http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGES>
* <https://www.cve.org/CVERecord?id=CVE-2013-5704>