Re: HomestayFinder XSS Vulnerability in Wikipedia Mirror

["Susam Pal" <susam () susam in>]

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 () susam in
> > http://susam.in/ 
> >
> >
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