CVE-2024-2472: Latepoint Auth Bypass Vulnerability

CVE-2024-2472 Overview

The LatePoint Plugin for WordPress contains a critical authorization bypass vulnerability due to a missing capability check on the start_or_use_session_for_customer function. This vulnerability affects all versions up to and including 4.9.9, allowing unauthenticated attackers to access and modify sensitive customer data without proper authorization.

Critical Impact

Unauthenticated attackers can view other customers' cabinets, access PII such as email addresses, and change LatePoint user passwords, potentially compromising WordPress accounts if credentials are shared.

Affected Products

• LatePoint Plugin for WordPress versions up to and including 4.9.9
• WordPress installations with LatePoint Plugin installed
• Any website using LatePoint for appointment scheduling functionality

Discovery Timeline

• 2024-06-14 - CVE-2024-2472 published to NVD
• 2025-02-20 - Last updated in NVD database

Technical Details for CVE-2024-2472

Vulnerability Analysis

This vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key), commonly known as an Insecure Direct Object Reference (IDOR). The root issue stems from the plugin's failure to verify user permissions before granting access to customer session data.

The start_or_use_session_for_customer function does not implement proper capability checks, meaning any user—including unauthenticated visitors—can invoke this function to access arbitrary customer accounts. This represents a fundamental breakdown in the plugin's access control model.

From an exploitation perspective, the attack requires no authentication and can be executed remotely over the network. An attacker who successfully exploits this vulnerability can view sensitive personally identifiable information (PII) stored in customer records, including email addresses and contact details. More critically, the attacker can modify LatePoint user passwords, potentially gaining persistent access to customer accounts.

Root Cause

The vulnerability exists because the start_or_use_session_for_customer function lacks proper authorization validation. In WordPress plugin development, functions that access or modify user data must implement capability checks using WordPress's built-in permission system. The absence of these checks allows any request—regardless of authentication status—to access customer session data by simply providing a customer identifier.

Attack Vector

The attack vector is network-based, requiring no prior authentication or user interaction. An attacker can craft HTTP requests targeting the vulnerable function endpoint, iterating through customer identifiers to enumerate and access multiple customer accounts. The attack complexity is low, as no special conditions or advanced techniques are required to exploit the vulnerability.

Successful exploitation enables horizontal privilege escalation, where attackers gain access to data belonging to other users at the same privilege level. The ability to change passwords could also facilitate vertical privilege escalation if affected users have administrative privileges or if password reuse allows access to the WordPress admin panel.

Detection Methods for CVE-2024-2472

Indicators of Compromise

• Unusual access patterns to LatePoint customer endpoints from unauthenticated sessions
• Multiple rapid requests to the start_or_use_session_for_customer function with different customer IDs
• Unexpected password change notifications received by customers
• Web server logs showing enumeration attempts against customer-related API endpoints

Detection Strategies

• Monitor web application logs for repeated unauthenticated requests targeting LatePoint plugin endpoints
• Implement rate limiting on customer session endpoints to detect and block enumeration attempts
• Deploy Web Application Firewall (WAF) rules to identify IDOR attack patterns
• Enable WordPress audit logging to track unauthorized data access attempts

Monitoring Recommendations

• Configure alerting for authentication anomalies related to LatePoint user accounts
• Review access logs regularly for patterns indicative of customer data enumeration
• Monitor for unexpected modifications to customer records or password changes
• Implement real-time monitoring of plugin endpoint access patterns

How to Mitigate CVE-2024-2472

Immediate Actions Required

• Update the LatePoint Plugin to the latest patched version immediately
• Review customer accounts for unauthorized password changes or suspicious activity
• Notify affected customers if unauthorized access is suspected
• Implement additional access controls at the web server or WAF level while patching

Patch Information

Organizations should update the LatePoint Plugin to a version newer than 4.9.9 that includes the security fix. Refer to the LatePoint Plugin Changelog for details on the patched version. Additional vulnerability details are available from the Wordfence Vulnerability Report.

Workarounds

• If immediate patching is not possible, consider temporarily disabling the LatePoint Plugin until updates can be applied
• Implement Web Application Firewall rules to restrict access to vulnerable endpoints
• Use server-side access controls to require authentication for all LatePoint API endpoints
• Consider implementing IP-based restrictions for administrative functions

# Example .htaccess restriction for LatePoint endpoints
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_URI} latepoint [NC]
    RewriteCond %{HTTP_COOKIE} !wordpress_logged_in [NC]
    RewriteRule ^.*$ - [F,L]
</IfModule>