full-disclosure - Re: HomestayFinder XSS Vulnerability in Wikipedia Mirror

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Date: Wed, 11 Jul 2007 22:19:30 +0530
From: "Harry Muchow" <wonderfulandromeda@...il.com>
To: "Susam Pal" <susam@...am.in>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: HomestayFinder XSS Vulnerability in Wikipedia
	Mirror

http://www.homestayfinder.com/Dictionary.aspx?q=User:Susam_pal/Sandbox
now redirects to
http://www.inglesnoexterior.com/dictionary.aspx?q=User:Susam_pal/Sandbox

Vulnerable script moved to another domain. To protect the cookies of
homestayfinder.com???

Wondering whether this kinda attack would be called persistent XSS or
something else? This is a case where the attack vector goes into one
site and the vector exploits another site. How to classify this?

On 7/11/07, Susam Pal <susam@...am.in> wrote:
> Hi Matjaz,
>
> I just checked it and I find it to be working with the browsers I have
> (tested with Firefox 2.0.0.3 and Internet Explorer 7).
>
> http://www.homestayfinder.com/Dictionary.aspx?q=User:Susam_pal/Sandbox
> demonstrates the vulnerability.
>
> http://en.wikipedia.org/wiki/User:Susam_pal/Sandbox is the page where
> the script is hosted. The script present in Wikipedia exploits the XSS
> vulnerability in HomestayFinder's Dictionary.aspx script.
>
> Regards,
> Susam Pal
>
> Matjaz Debelak writes:
>
> > Well, it does not appear to work for me in any browser (tested Firefox
> > 2.0.0.3 and Konqueror).
> >
> > LP Killer_X
> >
> > Susam Pal wrote:
> >> There is an XSS vulnerability in HomestayFinder's 'Dictionary.aspx'
> >> script which is responsible for mirroring the content of Wikipedia. I
> >> found this interesting because here a script injected in one website
> >> exploits an XSS vulnerability in another website.
> >>
> >> I am including only a short example to demonstrate the issue. The
> >> complete document is available at:-
> >> http://susam.in/security/advisory-2007-07-11.txt
> >>
> >> http://en.wikipedia.org/wiki/User:Susam_pal/Sandbox consists of the
> >> following as the source wiki markup:
> >>
> >>    <script>alert('XSS Demo')</script>
> >>
> >> http://www.homestayfinder.com/Dictionary.aspx?q=User:Susam_pal/Sandbox
> >> consists of the same code as HTML without the special characters encoded
> >> as HTML entities. Hence, the script is executed on the browser of the
> >> visitor.
> >>
> >> Contact Information:-
> >> Susam Pal
> >> susam@...am.in
> >> http://susam.in/
> >>
> >>
> >> _______________________________________________
> >> Full-Disclosure - We believe in it.
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> >>
> >
> > _______________________________________________
> > Full-Disclosure - We believe in it.
> > Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/