A flaw was found in the way Ceph Object Gateway would process cross-origin HTTP requests if the CORS policy was set to allow origin on a bucket. A remote unauthenticated attacker could use this flaw to cause denial of service by sending a specially-crafted cross-origin HTTP request. Ceph branches 1.3.x and 2.x are affected.
http://www.securityfocus.com/bid/94936
http://rhn.redhat.com/errata/RHSA-2016-2995.html
http://rhn.redhat.com/errata/RHSA-2016-2994.html