CVE-2024-49604
📋 TL;DR
This vulnerability allows attackers to bypass authentication in the Simple User Registration WordPress plugin, potentially gaining unauthorized access to user accounts. It affects all WordPress sites using Simple User Registration plugin versions up to and including 5.5.
💻 Affected Systems
- WordPress Simple User Registration Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete site takeover where attackers gain administrative privileges, modify content, install backdoors, or steal sensitive user data.
Likely Case
Unauthorized access to user accounts leading to privilege escalation, data theft, or content manipulation.
If Mitigated
Limited impact if strong network segmentation, web application firewalls, and monitoring are in place to detect and block exploitation attempts.
🎯 Exploit Status
Authentication bypass vulnerabilities are typically easy to exploit once details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 5.5
Vendor Advisory: https://patchstack.com/database/vulnerability/wp-registration/wordpress-simple-user-registration-plugin-5-5-account-takeover-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Simple User Registration. 4. Click 'Update Now' if available. 5. If no update is available, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched version is available
wp plugin deactivate simple-user-registration
Web Application Firewall Rule
allAdd WAF rule to block suspicious authentication bypass attempts
🧯 If You Can't Patch
- Implement strong network segmentation to isolate WordPress instance
- Enable detailed logging and monitoring for authentication events
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Simple User Registration versionCheck Version:
wp plugin get simple-user-registration --field=versionVerify Fix Applied:
Verify plugin version is greater than 5.5 or plugin is removed📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns
- Multiple failed login attempts followed by successful login from same IP
- User privilege changes without admin action
Network Indicators:
- HTTP requests to authentication endpoints with unusual parameters
- Traffic patterns suggesting automated account takeover attempts
SIEM Query:
source="wordpress.log" AND ("authentication bypass" OR "unauthorized login" OR "user registration" AND status=200)