CVE-2024-30223
📋 TL;DR
CVE-2024-30223 is an unauthenticated PHP object injection vulnerability in the ARMember WordPress plugin. Attackers can exploit this by sending specially crafted requests to deserialize malicious data, potentially leading to remote code execution. All WordPress sites running ARMember versions up to 4.0.26 are affected.
💻 Affected Systems
- Repute Infosystems ARMember WordPress Plugin
📦 What is this software?
Armember by Reputeinfosystems
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise including remote code execution, data theft, website defacement, and installation of backdoors or malware.
Likely Case
Unauthenticated attackers gain shell access, install web shells, steal sensitive data, and potentially pivot to other systems.
If Mitigated
Attack attempts are detected and blocked, with minimal impact due to proper segmentation and monitoring.
🎯 Exploit Status
Public exploit details available on Patchstack; weaponization is likely given the high CVSS score and unauthenticated nature.
🛠️ 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-unauthenticated-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. Alternatively, download version 4.0.27+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable ARMember Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate armember-membership
Web Application Firewall Rule
allBlock requests containing serialized PHP object patterns targeting ARMember endpoints.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WordPress instance
- Deploy web application firewall with rules to block object injection patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > ARMember version. If version is 4.0.26 or lower, system is vulnerable.Check Version:
wp plugin get armember-membership --field=versionVerify Fix Applied:
Confirm ARMember plugin version is 4.0.27 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to ARMember endpoints
- PHP deserialization errors in web server logs
- Unexpected file uploads or modifications
Network Indicators:
- HTTP requests containing serialized PHP object patterns to /wp-content/plugins/armember/
- Unusual outbound connections from web server
SIEM Query:
source="web_server_logs" AND (uri="*armember*" AND (data="*O:*" OR data="*C:*" OR data="*a:*"))🔗 References
- https://patchstack.com/database/vulnerability/armember-membership/wordpress-armember-plugin-4-0-26-unauthenticated-php-object-injection-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/armember-membership/wordpress-armember-plugin-4-0-26-unauthenticated-php-object-injection-vulnerability?_s_id=cve
