Mozilla · Firefox · CVE-2012-4191
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox versions prior to 16.0.1
Thunderbird versions prior to 16.0.1
SeaMonkey versions prior to 2.13.1
**Description**
The issue affects the WebSockets implementation, specifically the mozilla::net::FailDelayManager::Lookup function. It allows remote attackers to cause a denial of service, resulting in memory corruption and application crash, or possibly execute arbitrary code via unspecified vectors.
**Recommendations**
For Mozilla Firefox versions prior to 16.0.1, update to version 16.0.1 or later.
For Thunderbird versions prior to 16.0.1, update to version 16.0.1 or later.
For SeaMonkey versions prior to 2.13.1, update to version 2.13.1 or later.