CVE-2022-30808
📋 TL;DR
EliteCMS 1.0.1 contains a critical vulnerability in the admin/manage_uploads.php file that allows authenticated attackers to upload malicious files and execute arbitrary code on the server. This affects all systems running EliteCMS 1.0.1 with the vulnerable file present. Attackers with admin access can completely compromise the web server.
💻 Affected Systems
- EliteCMS
📦 What is this software?
Elite Cms by Elitecms
⚠️ Risk & Real-World Impact
Worst Case
Complete server takeover with attacker gaining full control over the web server, installing backdoors, stealing data, and using the server as a pivot point for further attacks.
Likely Case
Attackers upload web shells or malware to establish persistent access, deface websites, steal sensitive data, or use the server for cryptocurrency mining.
If Mitigated
With proper file upload restrictions and web application firewalls, the attack would be blocked or detected before successful exploitation.
🎯 Exploit Status
Exploitation requires admin credentials. The vulnerability allows direct file upload without proper validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider migrating to a different CMS or implementing strict workarounds.
🔧 Temporary Workarounds
Restrict file upload functionality
linuxDisable or restrict the manage_uploads.php functionality to prevent file uploads.
mv admin/manage_uploads.php admin/manage_uploads.php.disabled
Implement file upload validation
allAdd strict file type validation and size limits to the upload functionality.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the EliteCMS server from critical systems
- Deploy a web application firewall (WAF) with rules to block suspicious file uploads and PHP execution attempts
🔍 How to Verify
Check if Vulnerable:
Check if EliteCMS version 1.0.1 is installed and if the file admin/manage_uploads.php exists and is accessible with admin credentials.Check Version:
Check EliteCMS configuration files or database for version information, typically in config.php or similar files.Verify Fix Applied:
Verify that file upload functionality is disabled or properly secured, and test that malicious file uploads are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to admin/manage_uploads.php
- Execution of unexpected PHP files in upload directories
- Multiple failed upload attempts followed by successful upload
Network Indicators:
- HTTP POST requests to admin/manage_uploads.php with file uploads
- Outbound connections from the web server to suspicious IPs after file upload
SIEM Query:
source="web_server_logs" AND (uri="/admin/manage_uploads.php" OR file_upload="true") AND (file_extension="php" OR file_extension="phtml" OR file_extension="phar")