941156 - FireFox can get locked in on a fake security alert page

Status: RESOLVED DUPLICATE of bug 616853

(Firefox :: Untriaged, defect)

Description

[Joona Palaste]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/22.0 (Beta/Release)
Build ID: 20130624103927

Steps to reproduce:

I was browsing for, ahem, adult content (fully legal) on FireFox 22 on Fedora 17, when a link led me to a fake security alert page, claiming to be an alert from the Finnish police forces saying my computer was locked because I had trafficked illegal content. Of course, I had read news about this kind of fake alerts, and immediately knew it was a scam.


Actual results:

FireFox wouldn't let me get out of the page. Trying to close the tab, or trying to quit FireFox, only resulted in a never-ending cycle of modal dialogs asking if I really wanted to leave the page. I killed the whole FireFox process, but when I restarted FireFox, it automatically loaded the same page, and the whole thing happened again. I had to kill the FireFox process and restart in safe mode to get out of the situation.


Expected results:

FireFox should have provided a way to just close the whole tab, or at least quit the whole program, instead of just displaying the same modal dialog over and over again.