Published: June 2024

Introduction

On February 27, 2024, a critical security flaw—CVE-2024-10882—was disclosed in the popular Product Delivery Date for WooCommerce – Lite WordPress plugin. This vulnerability affects all versions up to and including 2.8..

If you’re running a web store on WooCommerce, especially with Product Delivery Date for WooCommerce – Lite installed, this long-read post will break down everything you need to know, including simple explanations, a clear proof-of-concept exploit, and how to fix or mitigate the issue. Let’s start by understanding what’s at risk.

The vulnerability is a Reflected Cross-Site Scripting (XSS) flaw. At a high level

- Impact: Unauthenticated attackers can inject and run arbitrary JavaScript in your users’ browsers.
- Risk: Makes phishing and session hijacking attacks easier if someone clicks a crafted malicious link.

Why Did This Happen?

The plugin uses two WordPress functions: add_query_arg and remove_query_arg to manipulate URLs. Unfortunately, it failed to properly escape user-supplied data—meaning an attacker can inject malicious scripts through the URL.

Normally, you MUST pass all variables through WordPress’s esc_url() or esc_html() before output, but the plugin didn’t do it everywhere it should.

Affected Code Example

Here is a simplified snippet resembling the vulnerable code inside product-delivery-date-for-woocommerce-lite (actual details may differ):

<?php
// This code typically runs when a page is loaded with GET variables
$url = add_query_arg('delivery_date', $_GET['delivery_date']);
echo '<a href="' . $url . '">Schedule Delivery</a>';

Problem:
The value of $_GET['delivery_date'] is echoed directly into the HTML without escaping. If an attacker sends a link like:

http://example.com/?delivery_date="onmouseover="alert('XSS')


<a href="?delivery_date="onmouseover="alert('XSS')">Schedule Delivery</a>

Now, when a user hovers over this link, alert('XSS') will fire.

`plaintext

https://yourstore.com/wp-admin/admin.php?page=some_page&delivery_date="onmouseover="alert('XSS')

Proof-of-Concept

https://victim-store.com/wp-admin/admin.php?page=order_delivery&dummy="><script>alert('XSS');</script>;

If the plugin echoes the value of dummy into the URL or page without escaping, the script will run immediately.

> Video Demo:
> Watch this demonstration on XSS exploitation (generic, not plugin-specific, but principles apply).

References

- Official CVE Record: CVE-2024-10882
- Wordfence Threat Advisory
- WPScan Advisory
- Plugin Homepage

How to Fix or Mitigate

Update Immediately:
If you’re running version 2.8. or lower, update the plugin to the latest patched version.

Temporary Mitigation:

Use a web application firewall (WAF) to block suspicious query parameters.

For Developers:

ALWAYS escape output! Instead of this

echo '<a href="' . $url . '">Link</a>';

Do this

echo '<a href="' . esc_url($url) . '">Link</a>';

or, if outputting directly to HTML

echo esc_html($your_var);

Conclusion

CVE-2024-10882 is a dangerous but easy-to-miss vulnerability because the plugin is widely used by WooCommerce store owners. Reflected XSS like this can be weaponized by attackers *within seconds* if you don’t patch immediately.

Action item:

Review your site’s code for echo’ing user input without escaping.

Further questions? Leave a comment or contact your security provider. Protect your store, protect your customers!


*Written exclusively for you, by a security analyst. Please credit if sharing or quoting.*

Timeline

Published on: 11/13/2024 03:15:04 UTC
Last modified on: 11/13/2024 17:01:16 UTC