---
title: "CVE-2012-4191\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-2012-4191?format=md
keywords: index, follow
---

# CVE-2012-4191

Publication date 11 October 2012

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The mozilla::net::FailDelayManager::Lookup function in the WebSockets
implementation in Mozilla Firefox before 16.0.1, Thunderbird before 16.0.1,
and SeaMonkey before 2.13.1 allows remote attackers to cause a denial of
service (memory corruption and application crash) or possibly execute
arbitrary code via unspecified vectors.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-4191?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 13.10 saucy | Not affected |
| 13.04 raring | Not affected |
| 12.10 quantal | Not affected |
| 12.04 LTS precise | Fixed 16.0.1+build1-0ubuntu0.12.04.1 |
| 11.10 oneiric | Fixed 16.0.1+build1-0ubuntu0.11.10.1 |
| 11.04 natty | Fixed 16.0.1+build1-0ubuntu0.11.04.1 |
| 10.04 LTS lucid | Fixed 16.0.1+build1-0ubuntu0.10.04.1 |
| 8.04 LTS hardy | Ignored end of life |
| seamonkey | 13.10 saucy | Not in release |
| 13.04 raring | Not in release |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Ignored end of life |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Ignored end of life |
| 8.04 LTS hardy | Ignored end of life |
| thunderbird | 13.10 saucy | Not affected |
| 13.04 raring | Not affected |
| 12.10 quantal | Not affected |
| 12.04 LTS precise | Fixed 16.0.1+build1-0ubuntu0.12.04.1 |
| 11.10 oneiric | Fixed 16.0.1+build1-0ubuntu0.11.10.1 |
| 11.04 natty | Fixed 16.0.1+build1-0ubuntu0.11.04.1 |
| 10.04 LTS lucid | Fixed 16.0.1+build1-0ubuntu0.10.04.1 |
| 8.04 LTS hardy | Ignored end of life |
| xulrunner-1.9.2 | 13.10 saucy | Not in release |
| 13.04 raring | Not in release |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 11.04 natty | Ignored |
| 10.04 LTS lucid | Ignored end of life |
| 8.04 LTS hardy | Ignored end of life |
| xulrunner-2.0 | 13.10 saucy | Not in release |
| 13.04 raring | Not in release |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 11.04 natty | Ignored end of life |
| 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)

## Notes

---

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

xulrunner-1.9.2 unmaintained upstream (see README.mozilla for
details)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4191)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-4191)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-4191)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-4191)

### Related Ubuntu Security Notices (USN)

+ [USN-1608-1](https://usn.ubuntu.com/USN-1608-1)
+ Firefox vulnerabilities
+ 11 October 2012

+ [USN-1611-1](https://usn.ubuntu.com/USN-1611-1)
+ Thunderbird vulnerabilities
+ 12 October 2012

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2012-4191>