CVE-2022-0658
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary SQL commands on WordPress sites running vulnerable versions of the CommonsBooking plugin. Attackers can potentially read, modify, or delete database content, including sensitive user data. All WordPress sites with CommonsBooking plugin versions before 2.6.8 are affected.
💻 Affected Systems
- WordPress CommonsBooking Plugin
📦 What is this software?
Commonsbooking by Wielebenwir
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, site defacement, or full administrative access to the WordPress installation.
Likely Case
Data exfiltration of user information, plugin settings, or WordPress configuration details.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to the CommonsBooking plugin tables only.
🎯 Exploit Status
SQL injection via location parameter in calendar_data AJAX endpoint requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.6.8
Vendor Advisory: https://wpscan.com/vulnerability/d7f0805a-61ce-454a-96fb-5ecacd767578
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find CommonsBooking plugin. 4. Click 'Update Now' if available. 5. If manual update needed, download version 2.6.8+ from WordPress.org, deactivate old version, upload new version, and activate.
🔧 Temporary Workarounds
Disable vulnerable AJAX endpoint
allBlock access to the vulnerable calendar_data AJAX action via .htaccess or web application firewall
# Add to .htaccess:
RewriteCond %{QUERY_STRING} action=calendar_data [NC]
RewriteRule ^wp-admin/admin-ajax\.php$ - [F,L]
Temporary plugin deactivation
linuxDeactivate CommonsBooking plugin until patched version can be installed
wp plugin deactivate commonsbooking
🧯 If You Can't Patch
- Implement web application firewall rules to block SQL injection patterns targeting the calendar_data endpoint
- Restrict database user permissions to read-only access for the CommonsBooking plugin tables
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for CommonsBooking version numberCheck Version:
wp plugin list --name=commonsbooking --field=versionVerify Fix Applied:
Confirm CommonsBooking plugin version is 2.6.8 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in WordPress debug logs
- Multiple requests to /wp-admin/admin-ajax.php with action=calendar_data and SQL-like parameters
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php containing SQL injection payloads in location parameter
SIEM Query:
source="web_access" AND uri_path="/wp-admin/admin-ajax.php" AND query="*action=calendar_data*" AND (query="*UNION*" OR query="*SELECT*" OR query="*INSERT*" OR query="*DELETE*")