Re: [Full-disclosure] HomestayFinder XSS Vulnerability in Wikipedia Mirror

["Susam Pal" <susam@xxxxxxxx>]

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@xxxxxxxx
>> http://susam.in/ 
>>
>>
>> _______________________________________________
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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/