CVE-2024-13442: Service Finder Bookings Privilege Escalation

CVE-2024-13442 Overview

The Service Finder Bookings plugin for WordPress contains a critical privilege escalation vulnerability via account takeover affecting all versions up to and including 5.0. The vulnerability stems from improper user identity validation during two key operations: post-booking auto-login and profile detail updates (including password changes). This authentication bypass allows unauthenticated attackers to login as any user if their email address is known, or change any user's password—including administrators—to gain unauthorized access to their accounts.

Critical Impact

Unauthenticated attackers can compromise any WordPress account, including administrators, by exploiting improper identity validation during auto-login or password reset operations. This can lead to complete site takeover.

Affected Products

• Service Finder Bookings plugin for WordPress versions ≤ 5.0
• WordPress sites using the Service Finder Service and Business Listing theme ecosystem
• Service Finder WordPress Theme and associated booking functionality

Discovery Timeline

• 2025-03-19 - CVE-2024-13442 published to NVD
• 2025-03-19 - Last updated in NVD database

Technical Details for CVE-2024-13442

Vulnerability Analysis

This vulnerability is classified under CWE-288 (Authentication Bypass Using an Alternate Path or Channel). The Service Finder Bookings plugin fails to properly validate user identity in two critical scenarios, creating pathways for complete authentication bypass.

The first vulnerable pathway occurs during the post-booking auto-login process. When a booking is completed, the plugin automatically logs in the associated user without adequately verifying that the requesting party is the legitimate account owner. An attacker who knows a target user's email address can exploit this mechanism to gain authenticated access to their account.

The second vulnerable pathway exists in the profile update functionality. The plugin allows profile modifications, including password changes, without properly confirming the identity of the requester. This enables attackers to reset any user's password to a value of their choosing, effectively taking over the account.

The network-accessible nature of this vulnerability, combined with the lack of authentication requirements and user interaction, makes it highly exploitable. An attacker needs only to know a target email address to compromise accounts, and administrator accounts are equally vulnerable, potentially leading to complete WordPress site compromise.

Root Cause

The root cause is improper authentication validation (CWE-288) where the plugin trusts client-supplied data (email addresses) without verifying that the requester has legitimate ownership of the associated account. The auto-login and profile update handlers lack proper session validation, ownership verification, or secondary authentication mechanisms that would prevent unauthorized account access.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can exploit this vulnerability through two methods:

1. Auto-Login Exploitation: By triggering the post-booking auto-login mechanism with a known victim's email address, the attacker can authenticate as that user without knowledge of their password.

2. Password Reset Exploitation: By submitting a profile update request containing a target user's email and a new password value, the attacker can change the victim's password and subsequently login with the new credentials.

The vulnerability allows attackers to target administrator accounts, enabling complete WordPress site takeover including the ability to modify content, install malicious plugins, access sensitive data, and pivot to other systems.

Detection Methods for CVE-2024-13442

Indicators of Compromise

• Multiple login events for the same user account from different IP addresses or geographic locations within short timeframes
• Profile update or password change requests originating from unusual IP addresses or without typical user session patterns
• Booking completion events immediately followed by authentication as different users
• Administrator account access from IP addresses not associated with known administrative users

Detection Strategies

• Monitor WordPress authentication logs for anomalous login patterns, particularly auto-login events triggered by the Service Finder Bookings plugin
• Implement alerting on password changes for privileged accounts, especially when initiated through plugin-specific endpoints
• Review web application firewall (WAF) logs for requests targeting Service Finder Bookings plugin endpoints with suspicious email parameters
• Deploy endpoint detection solutions to identify unauthorized WordPress administrative actions

Monitoring Recommendations

• Enable comprehensive WordPress audit logging including all authentication events and profile modifications
• Configure SIEM rules to correlate booking submissions with subsequent authentication events from different source IPs
• Monitor for bulk email enumeration attempts that may precede exploitation
• Implement user behavior analytics (UBA) to detect account access patterns inconsistent with legitimate user activity

How to Mitigate CVE-2024-13442

Immediate Actions Required

• Update the Service Finder Bookings plugin to a patched version as soon as one becomes available from the vendor
• Disable the Service Finder Bookings plugin if immediate patching is not possible and the functionality is not critical
• Force password resets for all administrator accounts and review for unauthorized changes
• Audit user accounts for suspicious modifications, new accounts, or privilege escalations
• Review WordPress audit logs for evidence of prior exploitation

Patch Information

Organizations should monitor the ThemeForest Service Finder listing and the Wordfence Vulnerability Report for updates regarding a security patch. Update to a version newer than 5.0 once available, and verify the changelog indicates this vulnerability has been addressed.

Workarounds

• Temporarily disable the Service Finder Bookings plugin auto-login functionality if configurable
• Implement web application firewall (WAF) rules to restrict access to vulnerable plugin endpoints
• Limit plugin functionality to authenticated users only through WordPress role-based access controls
• Enable multi-factor authentication (MFA) for all WordPress administrator accounts to provide defense-in-depth
• Consider temporarily restricting public booking functionality until a patch is available

# WordPress wp-config.php hardening example
# Force SSL for admin and login pages
define('FORCE_SSL_ADMIN', true);

# Disable plugin/theme file editing from admin panel
define('DISALLOW_FILE_EDIT', true);

# Limit login attempts via .htaccess or security plugin
# Consider implementing IP-based restrictions for wp-admin access