The host is missing a security update according to Mozilla advisory, MFSA 2013-42. The update is required to fix cross-site scripting (XSS) vulnerability. A flaw is present in the applications, which fail to prevent acquisition of chrome privileges during calls to content level constructors. Successful exploitation allows remote attackers to bypass certain read-only restrictions and conduct cross-site scripting (XSS) attacks via a crafted web site.