CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

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::Auxiliary::Report
8
  include Msf::Auxiliary::Scanner
9
  include Msf::Exploit::Remote::TNS
10

11
  def initialize(info = {})
12
    super(update_info(info,
13
      'Name'           => 'Oracle TNS Listener Checker',
14
      'Description'    => %q{
15
        This module checks the server for vulnerabilities like TNS Poison.
16
        Module sends a server a packet with command to register new TNS Listener and checks
17
        for a response indicating an error. If the registration is errored, the target is not
18
        vulnerable. Otherwise, the target is vulnerable to malicious registrations.
19
      },
20
      'Author'         => ['ir0njaw (Nikita Kelesis) <nikita.elkey[at]gmail.com>'], # of Digital Security [http://dsec.ru]
21
      'References'     =>
22
        [
23
          [ 'CVE', '2012-1675'],
24
          [ 'URL', 'https://seclists.org/fulldisclosure/2012/Apr/204' ],
25
        ],
26
      'DisclosureDate' => '2012-04-18',
27
      'License'        => MSF_LICENSE))
28

29
    register_options(
30
      [
31
        Opt::RPORT(1521)
32
      ])
33
  end
34

35
  def run_host(ip)
36
    begin
37
      connect
38
      send_packet = tns_packet("(CONNECT_DATA=(COMMAND=service_register_NSGR))")
39
      sock.put(send_packet)
40
      packet = sock.read(100)
41
      if packet
42
        hex_packet = Rex::Text.to_hex(packet, ':')
43
        split_hex = hex_packet.split(':')
44
        find_packet = /\(ERROR_STACK=\(ERROR=/ === packet
45
        if find_packet == true #TNS Packet returned ERROR
46
          print_error("#{ip}:#{rport} is not vulnerable")
47
        elsif split_hex[5] == '02' #TNS Packet Type: ACCEPT
48
          print_good("#{ip}:#{rport} is vulnerable")
49
        elsif split_hex[5] == '04' #TNS Packet Type: REFUSE
50
          print_error("#{ip}:#{rport} is not vulnerable")
51
        else #All other TNS packet types or non-TNS packet type response cannot guarantee vulnerability
52
          print_error("#{ip}:#{rport} might not be vulnerable")
53
        end
54
      else
55
        print_error("#{ip}:#{rport} is not vulnerable")
56
      end
57
      # TODO: Module should report_vuln if this finding is solid.
58
      rescue ::Rex::ConnectionError, ::Errno::EPIPE
59
      print_error("#{ip}:#{rport} unable to connect to the server")
60
    end
61
  end
62
end
63

64