##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::Scanner
  include Msf::Auxiliary::Report

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Docker Server Version Scanner',
        'Description' => %q{
          This module attempts to identify the version of a Docker Server running on a
          host. If you wish to see all the information available, set VERBOSE to true.
        },
        'Author' => [ 'Agora-Security' ],
        'License' => MSF_LICENSE,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )
    register_options(
      [
        Opt::RPORT(2375)
      ]
    )
  end

  def run_host(ip)
    res = send_request_cgi({
      'uri' => '/version',
      'method' => 'GET'
    })
    if res.nil? || res.code != 200
      print_error("[Docker Version] failed to identify version")
      return
    end

    result = res.get_json_document
    print_status("Identifying Docker Server Version on #{peer}")
    print_good("[Docker Server] Version: #{result['Version']}")
    print_status ("All info: #{result.to_s}") if datastore['VERBOSE']
    report_note(
      :host => ip,
      :port => rport,
      :proto => 'tcp',
      :ntype => 'docker_version',
      :data => { :version => result['Version'] },
      :info => "Docker Server v.#{result['Version']}"
    )
    print_status("Saving host information.")
    report_host(
      :host => ip,
      :arch => result['Arch'],
      :detected_arch => result['Arch'],
      :os_family => result['Os'],
      :info => "Docker Server v.#{result['Version']} Kernel Version: #{result['KernelVersion']}"
    )
  end
end
