CVE-2024-11641
📋 TL;DR
This CSRF vulnerability in the VikBooking WordPress plugin allows attackers to trick administrators into performing actions that change plugin access privileges. Attackers can then upload arbitrary files, potentially leading to remote code execution. All WordPress sites using VikBooking up to version 1.7.2 are affected.
💻 Affected Systems
- VikBooking Hotel Booking Engine & PMS WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete site compromise, data theft, malware distribution, or site defacement.
Likely Case
Unauthorized file uploads leading to backdoor installation, privilege escalation, or data exfiltration.
If Mitigated
Limited impact with proper CSRF protections, but still potential for privilege escalation if other vulnerabilities exist.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated users. No public exploit code available at time of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.7.3 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3225861/vikbooking
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find VikBooking plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the VikBooking plugin until patched to prevent exploitation.
wp plugin deactivate vikbooking
CSRF Protection Headers
allImplement Content Security Policy headers to help mitigate CSRF attacks.
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'"
🧯 If You Can't Patch
- Implement strict file upload restrictions and validation
- Use web application firewall with CSRF protection rules
- Limit administrator access to trusted networks only
- Implement additional authentication factors for privileged actions
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for VikBooking version. If version is 1.7.2 or lower, you are vulnerable.Check Version:
wp plugin get vikbooking --field=versionVerify Fix Applied:
After updating, verify VikBooking plugin version shows 1.7.3 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to wp-content/uploads/vikbooking/
- CSRF token validation failures in WordPress logs
- Unauthorized privilege changes in user management logs
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=vikbooking_save without proper referrer headers
- Suspicious file uploads to plugin directories
SIEM Query:
source="wordpress.log" AND ("vikbooking_save" OR "admin-ajax.php") AND status=200 AND referrer NOT CONTAINS own_domain