CVE-2012-0475

Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and
SeaMonkey before 2.9 do not properly construct the Origin and
Sec-WebSocket-Origin HTTP headers, which might allow remote attackers to
bypass an IPv6 literal ACL via a cross-site (1) XMLHttpRequest or (2)
WebSocket operation involving a nonstandard port number and an IPv6 address
that contains certain zero fields.

Bugs

• <https://bugzilla.mozilla.org/show_bug.cgi?id=694576&gt;