CVE-2023-29429
📋 TL;DR
This CVE describes a missing authorization vulnerability in the WPEverest User Registration WordPress plugin that allows attackers to bypass access controls. It affects all versions up to 2.3.2.1, potentially enabling unauthorized access to user registration functionality.
💻 Affected Systems
- WPEverest User Registration WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify user registration settings, create administrative accounts, or access sensitive user data without authentication.
Likely Case
Unauthorized users could manipulate registration forms, change registration settings, or access user information they shouldn't have permission to view.
If Mitigated
With proper access controls and authentication checks, the vulnerability would be prevented and normal plugin functionality would be maintained.
🎯 Exploit Status
The vulnerability involves missing authorization checks, which typically require minimal technical skill to exploit once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2.3.2.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find 'User Registration' plugin
4. Click 'Update Now' if available
5. If no update available, deactivate and delete plugin, then install latest version from WordPress repository
🔧 Temporary Workarounds
Disable User Registration Plugin
allTemporarily deactivate the vulnerable plugin until patched version is available
wp plugin deactivate user-registration
Restrict Access via Web Application Firewall
allAdd WAF rules to block unauthorized access to user registration endpoints
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access the WordPress admin interface
- Enable detailed logging and monitoring for unauthorized access attempts to user registration functionality
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > User Registration > check if version is 2.3.2.1 or earlierCheck Version:
wp plugin get user-registration --field=versionVerify Fix Applied:
Verify plugin version is higher than 2.3.2.1 and test user registration functionality with unauthorized accounts📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to user registration endpoints
- Multiple failed authentication attempts followed by successful registration actions
- Unusual user account creation patterns
Network Indicators:
- HTTP requests to /wp-admin/admin-ajax.php with user registration actions from unauthenticated IPs
- Traffic patterns showing registration form modifications without proper authentication
SIEM Query:
source="wordpress.log" AND ("user-registration" OR "registration") AND status=200 AND (user="-" OR auth="failed")