CVE-2024-43253: Clover Smart Online Order Auth Bypass

CVE-2024-43253 Overview

CVE-2024-43253 is a Missing Authorization vulnerability (CWE-862) affecting the ZAYTECH Smart Online Order for Clover WordPress plugin. This vulnerability allows attackers to bypass access control mechanisms due to a lack of proper authorization checks within the plugin, potentially leading to unauthorized access to sensitive functionality and data.

Critical Impact

This vulnerability enables unauthenticated attackers to bypass access controls in the Smart Online Order for Clover plugin, potentially compromising online ordering systems and associated customer data on affected WordPress installations.

Affected Products

• ZAYTECH Smart Online Order for Clover versions up to and including 1.5.6
• WordPress installations running the clover-online-orders plugin
• E-commerce sites utilizing Clover payment integration through this plugin

Discovery Timeline

• 2024-11-01 - CVE-2024-43253 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2024-43253

Vulnerability Analysis

This vulnerability stems from missing authorization checks within the Smart Online Order for Clover WordPress plugin. The plugin fails to properly verify user permissions before executing sensitive operations, resulting in a Broken Access Control condition. Unauthenticated attackers can exploit this flaw remotely without any user interaction required.

The vulnerability affects the core authorization logic of the plugin, where certain endpoints or functions do not validate whether the requesting user has appropriate privileges to perform the requested action. This architectural weakness allows malicious actors to access functionality that should be restricted to authenticated administrators or authorized users only.

Root Cause

The root cause of CVE-2024-43253 is the absence of capability checks and nonce verification in one or more plugin functions. WordPress plugins should implement current_user_can() checks and verify nonces using wp_verify_nonce() to ensure that only authorized users can execute privileged operations. The Smart Online Order for Clover plugin versions through 1.5.6 fail to implement these security controls adequately, allowing unauthorized access to protected functionality.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending crafted HTTP requests directly to the vulnerable WordPress plugin endpoints. Since no privileges are required, any remote attacker with network access to the target WordPress site can potentially exploit this vulnerability to:

• Access administrative functions without authentication
• Modify order data or plugin configurations
• Potentially escalate to further compromise of the WordPress installation

The vulnerability can be exploited through direct HTTP requests to affected plugin endpoints. Attackers would craft requests targeting specific plugin actions that lack proper authorization validation. For detailed technical information, see the Patchstack Vulnerability Report.

Detection Methods for CVE-2024-43253

Indicators of Compromise

• Unusual HTTP requests to WordPress plugin endpoints associated with clover-online-orders
• Unauthorized modifications to order data or plugin settings
• Access log entries showing requests to plugin AJAX handlers from unauthenticated sources
• Unexpected changes in Clover integration configurations

Detection Strategies

• Monitor web server access logs for suspicious requests targeting /wp-admin/admin-ajax.php or /wp-json/ endpoints related to the Clover plugin
• Implement Web Application Firewall (WAF) rules to detect and block unauthorized access attempts to plugin functionality
• Review WordPress audit logs for unauthorized configuration changes
• Deploy endpoint detection solutions to identify exploitation attempts

Monitoring Recommendations

• Enable detailed logging for WordPress AJAX and REST API requests
• Configure alerts for failed authorization attempts or unusual access patterns
• Regularly audit plugin configurations and order data integrity
• Monitor for new WordPress user accounts or privilege changes that may indicate post-exploitation activity

How to Mitigate CVE-2024-43253

Immediate Actions Required

• Update the Smart Online Order for Clover plugin to the latest available version that addresses this vulnerability
• If an update is not immediately available, consider temporarily disabling the plugin until a patch is released
• Review access logs for any signs of exploitation
• Audit plugin settings and order data for unauthorized modifications

Patch Information

Organizations using the ZAYTECH Smart Online Order for Clover plugin should check for available updates through the WordPress plugin repository or contact the vendor directly. The vulnerability affects versions up to and including 1.5.6. Review the Patchstack Vulnerability Report for the latest remediation guidance.

Workarounds

• Temporarily disable the Smart Online Order for Clover plugin if patching is not immediately possible
• Implement WAF rules to restrict access to plugin endpoints from untrusted sources
• Use WordPress security plugins to add additional access control layers
• Restrict administrative access to the WordPress installation by IP address where feasible

# Example: Restrict plugin access via .htaccess (Apache)
# Add to WordPress root .htaccess file
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_URI} clover-online-orders [NC]
    RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.100$
    RewriteRule .* - [F,L]
</IfModule>