CVE-2015-0807

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-04-01 · updated 2026-06-17
Weakness: CWE-352

Description

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.

Affected products

Mozilla Firefox: through 36.0.4; 31.0, 31.1.0, 31.1.1, 31.3.0, 31.5.1, 31.5.2 (+1)
Mozilla Firefox ESR: 31.1, 31.2, 31.3, 31.4, 31.5
Mozilla Thunderbird: through 31.5

References

http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://rhn.redhat.com/errata/RHSA-2015-0766.html
http://rhn.redhat.com/errata/RHSA-2015-0771.html
http://www.debian.org/security/2015/dsa-3211
http://www.debian.org/security/2015/dsa-3212
http://www.mozilla.org/security/announce/2015/mfsa2015-37.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.securityfocus.com/bid/73457
http://www.securitytracker.com/id/1031996

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