The HTTP authentication prompt appears above the currently open tab regardless
of which tab triggered it. A spoofer who could get a user to open a high value
target in another tab might be able to capture the user's ID and password. HTTP
auth dialogs are visually distinct from the web form logins used by most
commercial sites, and the HTTP auth dialog clearly states which host it's for.
Exploitation of this seems unlikely.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.