Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x
before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 10.x before
10.0.12 and 17.x before 17.0.2, and SeaMonkey before 2.15 allow remote
attackers to execute arbitrary JavaScript code with chrome privileges by
leveraging improper interaction between plugin objects and SVG elements.