Mozilla · Firefox · CVE-2012-3991
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox versions prior to 16.0
Firefox ESR versions prior to 10.0.8
Thunderbird versions prior to 16.0
Thunderbird ESR versions prior to 10.0.8
SeaMonkey versions prior to 2.13
**Description**
The issue allows remote attackers to bypass the Same Origin Policy and possibly have unspecified other impact via a crafted web site, due to improper restriction of JSAPI access to the `GetProperty` function.
**Recommendations**
For Mozilla Firefox versions prior to 16.0, update to version 16.0 or later.
For Firefox ESR versions prior to 10.0.8, update to version 10.0.8 or later.
For Thunderbird versions prior to 16.0, update to version 16.0 or later.
For Thunderbird ESR versions prior to 10.0.8, update to version 10.0.8 or later.
For SeaMonkey versions prior to 2.13, update to version 2.13 or later.