medium
6.8
CWE
352
Advisory Published
Updated

CVE-2015-0807: CSRF

First published: Wed Apr 01 2015(Updated: )

The navigator.sendBeacon implementation in Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 processes HTTP 30x status codes for redirects after a preflight request has occurred, which allows remote attackers to bypass intended CORS access-control checks and conduct cross-site request forgery (CSRF) attacks via a crafted web site, a similar issue to CVE-2014-8638.

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Firefox<=36.0.4
Firefox=31.0
Firefox=31.1.0
Firefox=31.1.1
Firefox=31.3.0
Firefox=31.5.1
Firefox=31.5.2
Firefox=31.5.3
Firefox ESR=31.1
Firefox ESR=31.2
Firefox ESR=31.3
Firefox ESR=31.4
Firefox ESR=31.5
Thunderbird<=31.5
Firefox ESR=31.0
Firefox ESR=31.1.0
Firefox ESR=31.1.1
Firefox ESR=31.3.0
Firefox ESR=31.5.1
Firefox ESR=31.5.2
Firefox ESR=31.5.3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-0807?

    CVE-2015-0807 has been assigned a medium severity rating due to the potential for remote attackers to bypass CORS access control checks.

  • How do I fix CVE-2015-0807?

    To fix CVE-2015-0807, update Mozilla Firefox to version 37.0 or later, or to Firefox ESR version 31.6 or later.

  • Which versions of Mozilla Firefox are affected by CVE-2015-0807?

    Versions of Mozilla Firefox below 37.0, Firefox ESR versions before 31.6, and Thunderbird versions before 31.6 are affected by CVE-2015-0807.

  • How does CVE-2015-0807 impact CORS security?

    CVE-2015-0807 allows remote attackers to bypass intended CORS access-control checks through the misuse of HTTP 30x status codes.

  • What software applications are affected by CVE-2015-0807?

    CVE-2015-0807 affects Mozilla Firefox, Firefox ESR, and Thunderbird applications running specified vulnerable versions.

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