Rapid7 Vulnerability & Exploit Database

MFSA2015-37 Firefox: CORS requests should not follow 30x redirections after preflight (CVE-2015-0807)

Back to Search

MFSA2015-37 Firefox: CORS requests should not follow 30x redirections after preflight (CVE-2015-0807)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
04/01/2015
Created
07/25/2018
Added
04/02/2015
Modified
04/05/2017

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.

Solution(s)

  • mozilla-firefox-esr-upgrade-31_6
  • mozilla-firefox-upgrade-37_0

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;