---
title: "CVE-2014-8638\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-2014-8638?format=md
keywords: index, follow
---

# CVE-2014-8638

Publication date 14 January 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 navigator.sendBeacon implementation in Mozilla Firefox before 35.0,
Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before
2.32 omits the CORS Origin header, which allows remote attackers to bypass
intended CORS access-control checks and conduct cross-site request forgery
(CSRF) attacks via a crafted web site.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 14.10 utopic | Fixed 35.0+build3-0ubuntu0.14.10.2 |
| 14.04 LTS trusty | Fixed 35.0+build3-0ubuntu0.14.04.2 |
| 12.04 LTS precise | Fixed 35.0+build3-0ubuntu0.12.04.2 |
| 10.04 LTS lucid | Ignored end of life |
| thunderbird | 14.10 utopic | Fixed 1:31.4.0+build1-0ubuntu0.14.10.1 |
| 14.04 LTS trusty | Fixed 1:31.4.0+build1-0ubuntu0.14.04.1 |
| 12.04 LTS precise | Fixed 1:31.4.0+build1-0ubuntu0.12.04.1 |
| 10.04 LTS lucid | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8638)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-8638)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-8638)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2014-8638)

### Related Ubuntu Security Notices (USN)

+ [USN-2458-1](https://usn.ubuntu.com/USN-2458-1)
+ Firefox vulnerabilities
+ 14 January 2015

+ [USN-2460-1](https://usn.ubuntu.com/USN-2460-1)
+ Thunderbird vulnerabilities
+ 19 January 2015

### Other references

* <https://www.mozilla.org/en-GB/security/advisories/mfsa2015-03/>
* <https://www.cve.org/CVERecord?id=CVE-2014-8638>