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Re: GMail, Google Groups XSS Vulnerability
From: Steven Rakick <stevenrakick () yahoo com>
Date: Tue, 18 Apr 2006 19:12:26 -0700 (PDT)

So what's the deal here? I haven't seen any mention of
this XSS vulnerability anywhere else... but I just
tested it and it worked. 

Isn't this a big deal for Google? It seems to me the
cookies accessible through GMail are pretty important,
not just for GMail but for their other services too.
Or am I missing something? 

On 4/11/06, Darren Bounds <dbounds () gmail com> wrote:
GMail, Google Groups XSS Vulnerability
April 11, 2006

GMail and Google Groups are vulnerable to an cross
site scripting
(XSS) attack due to their reliance on
Content-Disposition to provide
separation between the HTML file download and
application scopes. The
result is the ability for an attacker to send / post
a malicious HTML
file attachments which,  when read using Internet
Explorer, will
execute within the scope of the Google application
allowing the theft
of sensitive user content.

A PoC is available on Google Groups at the following
URL:


http://groups.google.com/group/Content-Disposition/browse_thread/thread/925106682eb32b2b

This vulnerability is directly related to my posting
earlier this week
entitled "Microsoft Internet Explorer
Content-Disposition HTML File
Handling Flaw" which can be found at the following
URL:


http://lists.grok.org.uk/pipermail/full-disclosure/2006-April/044991.html

Google has been notified.


--

Thank you,
Darren Bounds



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