Is there a known Firefox https exploit

[Colin Law]

On 18 August 2013 20:05, Jim Byrnes <jf_byrnes at comcast.net> wrote:
> Running Ubuntu 12.04 and Firefox 23 both recently updated.
>
> Two things happened this morning to make me wonder if Firefox had been
> compromised.
>
> Logged into my bank and clicked the Checkfree link and got a message that
> the page had temporarily moved and was presented with a link.  I called
> Checkfree and told them and they asked me to read them the url and they said
> it was correct. I logged on paid my bills and logged out.
>
> I then logged on a mutual fund site and saw a message that the page had
> moved.  I closed the tab, cleared Firefox cache and then shut down Firefox.
> When I restarted it I could log on to both my bank, Checkfee and the mutual
> fund site with no popups. I immediately changed the user name and passwords
> on both sites.
>
>
> The only thing I did lately that was not normal was I allowed the computer
> to run all night and Firefox was open.  Normally I shut it down when I done
> with it for the day.

I had a similar situation (different websites).  I think (though not
certain now) that it occurred after some updates with FF running.  I
thought it might be something to do with something updated under the
feet of FF so to speak.  I re-started FF and it has not occurred
since.  I believe that the re-directs were valid re-directs and what
was abnormal was that FF was warning me about it.

Colin