Use-after-free vulnerability in the mozVibrate implementation in the Vibrate library in Mozilla Firefox before 18.0 Firefox ESR 17.x before 17.0.2 Thunderbird before 17.0.2 Thunderbird ESR 17.x before 17.0.2 and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via vectors related to the domDoc pointer.