cross-site scripting through window.controllers


shutdown demonstrated how to use the window.controllers array to bypass
same-origin protections, allowing a malicious site to inject script into
content from another site. This could allow the malicious page to steal
information such as cookies or passwords from the other site, or perform
transactions on the user's behalf if the user were already logged in.

Note: Thunderbird shares the JavaScript engine with Firefox and could be
vulnerable if JavaScript were to be enabled in mail. This is not the default
setting and we strongly discourage users from running JavaScript in mail.

Workaround

Disable JavaScript until you can upgrade to a version containing the fix.

References

[1]https://bugzilla.mozilla.org/show_bug.cgi?id=313373


This issue also affects FC4