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Re: Firefox cross-domain image theft (CESA-2008-009)
From: rholgstad <rholgstad () gmail com>
Date: Tue, 18 Nov 2008 15:49:19 -0600
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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