CVE-2024-6889
📋 TL;DR
This vulnerability allows administrators in WordPress multisite installations to inject malicious scripts into plugin settings, which then execute when other users view those settings. It affects WordPress sites using the Secure Copy Content Protection and Content Locking plugin with versions before 4.1.7, particularly in environments where unfiltered_html capability is restricted.
💻 Affected Systems
- Secure Copy Content Protection and Content Locking WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated admin could inject persistent malicious scripts that steal session cookies, redirect users to phishing sites, or perform actions on behalf of other users when they view plugin settings pages.
Likely Case
Malicious admin or compromised admin account injects tracking scripts or defaces the plugin settings interface visible to other privileged users.
If Mitigated
Limited to plugin settings pages only, affecting only users with access to those administrative interfaces.
🎯 Exploit Status
Exploitation requires admin-level credentials and access to plugin settings interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.1.7
Vendor Advisory: https://wpscan.com/vulnerability/9651abd1-0f66-418e-85a7-2de0c5e91bed/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Secure Copy Content Protection and Content Locking'. 4. Click 'Update Now' if update available. 5. Alternatively, download version 4.1.7+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Remove vulnerable plugin
linuxTemporarily deactivate and remove the plugin until patched version is available.
wp plugin deactivate secure-copy-content-protection
wp plugin delete secure-copy-content-protection
Restrict admin access
allImplement IP whitelisting for WordPress admin interface to limit potential attackers.
# Add to .htaccess for Apache:
Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
# Add to nginx config:
location /wp-admin {
allow 192.168.1.0/24;
deny all;
}
🧯 If You Can't Patch
- Remove admin privileges from untrusted users
- Implement web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin → Plugins → Installed Plugins. If version is below 4.1.7, you are vulnerable.Check Version:
wp plugin get secure-copy-content-protection --field=versionVerify Fix Applied:
Confirm plugin version is 4.1.7 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual admin user activity modifying plugin settings
- Multiple failed admin login attempts followed by successful login
Network Indicators:
- HTTP POST requests to wp-admin/admin.php?page=secure-copy-content-protection with script tags in parameters
SIEM Query:
source="wordpress.log" AND ("admin.php" AND "secure-copy-content-protection") AND ("<script>" OR "javascript:")