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CVE-2014-8638

6.8 · MEDIUM

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 r…

Published Jan 14, 2015mozillaCWE-352EPSS 1.02%

Overview

CVE-2014-8638 is a medium-severity vulnerability affecting mozilla firefox. It was published on January 14, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mozillathunderbird0Affected
mozillaseamonkey0Affected

References

Reflinux.oracle.com/errata/ELSA-2015-0046.htmlReflinux.oracle.com/errata/ELSA-2015-0047.htmlReflists.opensuse.org/opensuse-security-announce/2015-01/msg00014.htmlReflists.opensuse.org/opensuse-security-announce/2015-01/msg00032.htmlReflists.opensuse.org/opensuse-security-announce/2015-01/msg00033.htmlReflists.opensuse.org/opensuse-security-announce/2015-01/msg00036.htmlReflists.opensuse.org/opensuse-security-announce/2015-02/msg00002.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00031.htmlReflists.opensuse.org/opensuse-updates/2015-01/msg00071.htmlRefrhn.redhat.com/errata/RHSA-2015-0046.html

How CyberStrike helps

Frequently asked questions

What is CVE-2014-8638?

CVE-2014-8638 is a medium-severity vulnerability affecting mozilla firefox. It was published on January 14, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2014-8638?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2014-8638?

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2014-8638?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-8638 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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