Executive Summary

The vulnerability in the Simple Bike Rental plugin for WordPress allows authenticated users with Subscriber-level access or higher to access booking records without proper authorization. This happens because the plugin lacks a capability check on the 'simpbire_carica_prenotazioni' AJAX action, enabling these users to retrieve customers' personally identifiable information (PII) such as names, email addresses, and phone numbers.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can lead to unauthorized disclosure of customers' personally identifiable information (PII), including names, email addresses, and phone numbers. Attackers with low-level access can exploit this to access sensitive data, potentially leading to privacy breaches, identity theft, or targeted phishing attacks.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability can negatively impact compliance with data protection regulations such as GDPR and HIPAA because it allows unauthorized access to personally identifiable information (PII). Such unauthorized disclosure of sensitive customer data may constitute a violation of these regulations' requirements for protecting personal data and could result in legal and financial consequences.

Useful 0 Not Useful 0

Detection Guidance

You can detect this vulnerability by checking if your WordPress site is running the Simple Bike Rental plugin version 1.0.6 or earlier. Specifically, monitor AJAX requests to the 'simpbire_carica_prenotazioni' endpoint. If authenticated users with Subscriber-level access or above can successfully call this AJAX action and retrieve booking data, the vulnerability is present. To detect such unauthorized access, you can use network monitoring tools or web server logs to look for POST or GET requests to 'wp-admin/admin-ajax.php' with the action parameter set to 'simpbire_carica_prenotazioni'. Example command using grep on server logs: grep 'action=simpbire_carica_prenotazioni' /path/to/access.log. Additionally, you can test via curl by simulating an authenticated user request to this AJAX endpoint and checking if booking data is returned without proper capability checks. Note that the vulnerability is fixed in version 1.0.7 by adding capability and nonce checks. [1, 3]

Useful 0 Not Useful 0

Mitigation Strategies

The immediate mitigation step is to upgrade the Simple Bike Rental plugin to version 1.0.7 or later, where the vulnerability is fixed by adding proper capability checks (requiring 'manage_options') and nonce verification on the 'simpbire_carica_prenotazioni' AJAX endpoint. If upgrading immediately is not possible, restrict access to the AJAX endpoint by limiting user roles that can access it, or disable the plugin temporarily. Also, monitor and audit access logs for suspicious AJAX requests to this endpoint. Applying these steps will prevent unauthorized users from accessing sensitive booking data containing customers' personally identifiable information. [3]

Useful 0 Not Useful 0