---
title: "CVE-2015-3183\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-2015-3183?format=md
keywords: index, follow
---

# CVE-2015-3183

Publication date 20 July 2015

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The chunked transfer coding implementation in the Apache HTTP Server before
2.4.14 does not properly parse chunk headers, which allows remote attackers
to conduct HTTP request smuggling attacks via a crafted request, related to
mishandling of large chunk-size values and invalid chunk-extension
characters in modules/http/http\_filters.c.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| apache2 | 15.04 vivid | Fixed 2.4.10-9ubuntu1.1 |
| 14.10 utopic | Ignored end of life |
| 14.04 LTS trusty | Fixed 2.4.7-1ubuntu4.5 |
| 12.04 LTS precise | Fixed 2.2.22-1ubuntu1.10 |

---

* [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-2015-3183?format=md#patch-details)

### 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=revision&revision=1684513> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1685339> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1685345> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1685347> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1688536> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1688538> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1684515> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1685904> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1685950> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1686271> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1688935> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1689821> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1687338> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1687339> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1688936> * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1689522> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3183)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-3183)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-3183)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-3183)

### Related Ubuntu Security Notices (USN)

+ [USN-2686-1](https://usn.ubuntu.com/USN-2686-1)
+ Apache HTTP Server vulnerabilities
+ 27 July 2015

### Other references

* <https://www.apache.org/dist/httpd/Announcement2.4.txt>
* <https://www.apache.org/dist/httpd/CHANGES_2.4.16>
* <https://www.cve.org/CVERecord?id=CVE-2015-3183>