CVE-2024-30222
📋 TL;DR
This CVE describes a PHP object injection vulnerability in the ARMember WordPress plugin, allowing attackers to execute arbitrary code through deserialization of untrusted data. It affects all WordPress sites running ARMember versions up to 4.0.26. Successful exploitation could lead to complete site compromise.
💻 Affected Systems
- Repute Infosystems ARMember WordPress Plugin
📦 What is this software?
Armember by Reputeinfosystems
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete server takeover, data theft, malware deployment, and persistent backdoor installation.
Likely Case
Unauthenticated attackers gaining administrative access to WordPress, modifying content, stealing user data, and installing additional malicious plugins.
If Mitigated
Limited impact with proper network segmentation, but still potential for site defacement or data exposure within the WordPress environment.
🎯 Exploit Status
Public exploit details available on Patchstack. Attack requires no authentication and uses standard PHP deserialization techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.27 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/armember-membership/wordpress-armember-plugin-4-0-26-php-object-injection-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find ARMember plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install fresh version 4.0.27+ from WordPress repository.
🔧 Temporary Workarounds
Disable ARMember Plugin
allTemporarily disable the vulnerable plugin until patched version can be installed.
wp plugin deactivate armember-membership
Restrict Plugin Access
linuxUse web application firewall to block requests to ARMember endpoints.
# Add to .htaccess for Apache:
RewriteRule ^wp-content/plugins/armember-membership/.*$ - [F,L]
# Add to nginx config:
location ~ ^/wp-content/plugins/armember-membership/ { deny all; }
🧯 If You Can't Patch
- Immediately disable ARMember plugin and remove from WordPress installation
- Implement strict WAF rules to block all requests to ARMember endpoints and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > ARMember version. If version is 4.0.26 or lower, you are vulnerable.Check Version:
wp plugin get armember-membership --field=versionVerify Fix Applied:
Verify ARMember plugin version is 4.0.27 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to ARMember plugin endpoints
- PHP errors related to unserialize() or object injection
- Unexpected admin user creation or privilege escalation
Network Indicators:
- HTTP requests containing serialized PHP objects in POST data
- Traffic to ARMember-specific endpoints from unexpected sources
SIEM Query:
source="web_logs" AND (uri="*armember*" OR uri="*armember-membership*") AND (method="POST" OR status>=400)