CVE-2024-10294
📋 TL;DR
The CE21 Suite WordPress plugin up to version 2.2.0 has an authentication bypass vulnerability that allows unauthenticated attackers to modify plugin settings. This occurs because the 'ce21_single_sign_on_save_api_settings' function lacks proper capability checks. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- CE21 Suite WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could reconfigure the plugin to enable malicious functionality, potentially leading to complete site compromise, data theft, or serving malicious content to visitors.
Likely Case
Attackers will modify API settings to redirect authentication flows, steal user credentials, or integrate the site into malicious operations.
If Mitigated
With proper network segmentation and monitoring, impact would be limited to plugin functionality disruption.
🎯 Exploit Status
The vulnerability is simple to exploit via direct HTTP requests to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.1 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/ce21-suite/trunk/includes/ce21-functions.php?rev=3097700#L340
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find CE21 Suite plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.2.1+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the CE21 Suite plugin until patched
wp plugin deactivate ce21-suite
Block Vulnerable Endpoint
linuxAdd web application firewall rule to block requests to the vulnerable function
# Add to .htaccess: RewriteRule ^wp-admin/admin-ajax\.php\?action=ce21_single_sign_on_save_api_settings - [F,L]
🧯 If You Can't Patch
- Remove the CE21 Suite plugin entirely from production systems
- Implement strict network access controls to limit who can access the WordPress admin interface
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > CE21 Suite for version number. If version is 2.2.0 or lower, you are vulnerable.Check Version:
wp plugin get ce21-suite --field=versionVerify Fix Applied:
After updating, verify plugin version shows 2.2.1 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=ce21_single_sign_on_save_api_settings from unauthenticated users
- Unusual plugin setting changes in WordPress logs
Network Indicators:
- HTTP requests to admin-ajax.php with ce21_single_sign_on_save_api_settings parameter from external IPs
SIEM Query:
source="wordpress.log" AND "ce21_single_sign_on_save_api_settings" AND (status=200 OR status=302)