CVE-2024-9593
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary code on WordPress servers running vulnerable versions of Time Clock or Time Clock Pro plugins. Attackers can remotely compromise the web server without requiring any authentication. All WordPress sites using these plugins in affected versions are at risk.
💻 Affected Systems
- Time Clock for WordPress
- Time Clock Pro for WordPress
📦 What is this software?
Time Clock by Wpplugin
Time Clock by Wpplugin
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data theft, ransomware deployment, lateral movement to other systems, and persistent backdoor installation.
Likely Case
Website defacement, malware injection, credential theft, and unauthorized access to sensitive data stored on the server.
If Mitigated
Limited impact with proper network segmentation, web application firewalls, and intrusion detection systems in place.
🎯 Exploit Status
The vulnerability is in an AJAX callback function that doesn't properly validate user input, allowing direct code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Time Clock 1.2.3+, Time Clock Pro 1.1.5+
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3171046/time-clock#file40
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find Time Clock or Time Clock Pro. 4. Click 'Update Now' if available. 5. If not available, delete the plugin and install the latest version from WordPress repository.
🔧 Temporary Workarounds
Disable vulnerable plugins
allTemporarily disable the Time Clock or Time Clock Pro plugins until patched.
wp plugin deactivate time-clock
wp plugin deactivate time-clock-pro
Web Application Firewall rule
allBlock requests to the vulnerable AJAX endpoint.
Block HTTP requests containing 'etimeclockwp_load_function_callback' in URL or parameters
🧯 If You Can't Patch
- Remove the plugins completely from the WordPress installation
- Implement strict network segmentation and isolate the vulnerable server
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Time Clock or Time Clock Pro version numbers.Check Version:
wp plugin list --name=time-clock --field=versionVerify Fix Applied:
Verify plugin version is Time Clock 1.2.3+ or Time Clock Pro 1.1.5+ in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /wp-admin/admin-ajax.php with 'action=etimeclockwp_load_function_callback' parameter
- Unusual PHP process execution from web server user
- Web server error logs showing code execution attempts
Network Indicators:
- POST requests to admin-ajax.php with suspicious payloads
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_server_logs" AND (uri="/wp-admin/admin-ajax.php" AND params CONTAINS "etimeclockwp_load_function_callback")