Marty Rosenberg

**Name of the Vulnerable Software and Affected Versions** Mozilla Firefox versions prior to 20.0 Firefox ESR 17.x versions prior to 17.0.5 Thunderbird versions prior to 17.0.5 Thunderbird ESR 17.x versions prior to 17.0.5 SeaMonkey versions prior to 2.17 **Description** The issue allows remote attackers to cause a denial of service, resulting in out-of-bounds read and memory corruption, via a crafted certificate. This is due to a problem in the CERT DecodeCertPackage function in Mozilla Network Security Services (NSS). **Recommendations** For Mozilla Firefox versions prior to 20.0, update to version 20.0 or later. For Firefox ESR 17.x versions prior to 17.0.5, update to version 17.0.5 or later. For Thunderbird versions prior to 17.0.5, update to version 17.0.5 or later. For Thunderbird ESR 17.x versions prior to 17.0.5, update to version 17.0.5 or later. For SeaMonkey versions prior to 2.17, update to version 2.17 or later.