The host is installed with Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, or SeaMonkey before 2.11 and is prone to an use after free vulnerability. A flaw is present in the applications, which fail to properly handle vectors related to focused content. Successful exploitation could allow attackers to execute arbit ...