Mozilla · Thunderbird · CVE-2009-3979
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox versions prior to 3.0.16
Mozilla Firefox versions 3.5.x prior to 3.5.6
SeaMonkey versions prior to 2.0.1
Thunderbird versions prior to 2.0.1
**Description**
The issue affects the browser engine, allowing remote attackers to cause a denial of service, which includes memory corruption and application crash, or possibly execute arbitrary code. The exact vectors used for the attack are unknown.
**Recommendations**
For Mozilla Firefox versions prior to 3.0.16, update to version 3.0.16 or later.
For Mozilla Firefox versions 3.5.x prior to 3.5.6, update to version 3.5.6 or later.
For SeaMonkey versions prior to 2.0.1, update to version 2.0.1 or later.
For Thunderbird versions prior to 2.0.1, update to version 2.0.1 or later.