Mozilla · Firefox · CVE-2010-2764
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox versions prior to 3.5.12
Mozilla Firefox versions 3.6.x prior to 3.6.9
Thunderbird versions prior to 3.0.7
Thunderbird versions 3.1.x prior to 3.1.3
SeaMonkey versions prior to 2.0.7
**Description**
The issue allows remote attackers to discover the existence of intranet web servers via cross-origin requests, due to improper restriction of read access to the `statusText` property of `XMLHttpRequest` objects.
**Recommendations**
For Mozilla Firefox versions prior to 3.5.12, update to version 3.5.12 or later.
For Mozilla Firefox versions 3.6.x prior to 3.6.9, update to version 3.6.9 or later.
For Thunderbird versions prior to 3.0.7, update to version 3.0.7 or later.
For Thunderbird versions 3.1.x prior to 3.1.3, update to version 3.1.3 or later.
For SeaMonkey versions prior to 2.0.7, update to version 2.0.7 or later.