full-disclosure - Re: Firefox 2.0.0.11 File Focus Stealing vulnerability

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Date: Sat, 1 Dec 2007 17:24:56 +0200 (EET)
From: Juha-Matti Laurio <juha-matti.laurio@...ti.fi>
To: carl hardwick <hardwick.carl@...il.com>, full-disclosure@...ts.grok.org.uk
Subject: Re: Firefox 2.0.0.11 File Focus Stealing
 vulnerability

Netscape Navigator version 9.0.0.4 is affected too. Test done with PoC-type URL mentioned on Mac OS X 10.4.10 fully patched.
Vendor was contacted on 1st Dec 2007.

- Juha-Matti

carl hardwick <hardwick.carl@...il.com> wrote: 
> Firefox 2.0.0.11 File Focus Stealing vulnerability:
> 
> Sorry Mozilla, but the recent file focus fix was not enough. I think
> Mozilla made another mistake while fixing the previous file/label
> issue. Because now I embed a file field and a textfield inside one
> label. When this happens, and you type only one time in the textfield,
> the focus travels to the file field and the value travels with it.
> Back to the drawing board I would say. I only got it to work in
> Firefox, Gareth checked Safari for me, and it also works in Safari. I
> guess this type of exploit could function on other HTML objects as
> well, and could be very dangerous because it only requires a one time
> focus in a textfield.
> 
> PoC here:
> http://carl-hardwick.googlegroups.com/web/Firefox20011StealFocusFlaw.htm
> 

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