952816 - Hijack websites able to prevent you from closing the window by bringing up repeated "Are you sure?" boxes. Clicking "Leave Page" brings up another box.

Status: RESOLVED DUPLICATE of bug 636374

(Firefox :: Untriaged, defect)

Description

[u493734]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131205075310

Steps to reproduce:

Firefox 26.0, Windows 7 Professional 64-bit, all updates installed.

1) Open up a new Firefox private browsing window
2) Enter this address in the address bar of the new window and hit enter (note that this is a scam/attack website that popped up as an advert): http://stop.policesavealert-secure.com/
3) Once the page has loaded, try to close the window.
4) When the "Are you sure?" confirmation window appears, click "Leave Page"


Actual results:

Firefox brought up another "Are you sure?" window. Clicking "Leave Page" again brought up another. This loop continued for approx 100 times before the page finally closed.


Expected results:

Once "Leave Page" had been clicked once, Firefox should have closed the window immediately.