full-disclosure - Re: Firefox cross-domain image theft (CESA-2008-009)

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Date: Tue, 18 Nov 2008 15:49:19 -0600
From: rholgstad <rholgstad@...il.com>
To: Chris Evans <scarybeasts@...il.com>
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: Firefox cross-domain image theft
	(CESA-2008-009)

no one cares

Chris Evans wrote:
> Hi,
>
> Firefox 2.0.0.18 <http://2.0.0.18> fixes a cross-domain theft of image 
> data. Firefox 3 unaffected. It's another interesting case where a 
> redirector confuses the browser about the true origin of a piece of 
> content. If evil.org <http://evil.org> hosts a redirector, e.g. 
> evil.org/redir <http://evil.org/redir>, and an image is loaded via 
> this redirector, the image will be treated as a same-domain image. In 
> this event, the image pixel data may easily be stolen by rendering the 
> image to a canvas and using the getImageData() JavaScript API.
>
> Advisory: http://scary.beasts.org/security/CESA-2008-009.html
>
> Blog post: 
> http://scarybeastsecurity.blogspot.com/2008/11/firefox-cross-domain-image-theft-and.html
>
> Cheers
> Chris
> ------------------------------------------------------------------------
>
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