---
title: "CVE-2011-1184\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-2011-1184?format=md
keywords: index, follow
---

# CVE-2011-1184

Publication date 26 September 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The HTTP Digest Access Authentication implementation in Apache Tomcat 5.5.x
before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.12 does not have the
expected countermeasures against replay attacks, which makes it easier for
remote attackers to bypass intended access restrictions by sniffing the
network for valid requests, related to lack of checking of nonce (aka
server nonce) and nc (aka nonce-count or client nonce count) values.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| tomcat5.5 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Ignored end of life |
| tomcat6 | 11.10 oneiric | Fixed 6.0.32-5ubuntu1.1 |
| 11.04 natty | Fixed 6.0.28-10ubuntu2.2 |
| 10.10 maverick | Fixed 6.0.28-2ubuntu1.5 |
| 10.04 LTS lucid | Fixed 6.0.24-2ubuntu1.9 |
| 8.04 LTS hardy | Not in release |
| tomcat7 | 11.10 oneiric | Not affected |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | 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)
* [Patch details](https://ubuntu.com/security/CVE-2011-1184?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 |
| --- | --- |
| tomcat6 | * Upstream:   <http://svn.apache.org/viewvc?view=revision&revision=1158180> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1184)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-1184)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-1184)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-1184)

### Related Ubuntu Security Notices (USN)

+ [USN-1252-1](https://usn.ubuntu.com/USN-1252-1)
+ Tomcat vulnerabilities
+ 8 November 2011

### Other references

* <http://tomcat.apache.org/security-6.html>
* <https://www.cve.org/CVERecord?id=CVE-2011-1184>