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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0807
Reference (s):
- BID:73457
- URL: http://www.securityfocus.com/bid/73457
- http://www.mozilla.org/security/announce/2015/mfsa2015-37.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1111834