CVE-2023-42331
📋 TL;DR
This vulnerability in EliteCMS v1.01 allows remote attackers to upload arbitrary files through the manage_uploads.php component, potentially leading to remote code execution. Any organization using the vulnerable version of EliteCMS is affected. Attackers can exploit this to take control of affected systems.
💻 Affected Systems
- EliteCMS
📦 What is this software?
Elite Cms by Elitecms
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full administrative control, data theft, ransomware deployment, and lateral movement within the network.
Likely Case
Webshell deployment leading to persistent backdoor access, data exfiltration, and potential use as a pivot point for further attacks.
If Mitigated
Limited impact with proper file upload restrictions, though system integrity may still be compromised if other vulnerabilities exist.
🎯 Exploit Status
Simple file upload bypass with publicly available proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Disable manage_uploads.php
linuxRemove or rename the vulnerable manage_uploads.php file to prevent exploitation
mv /path/to/elitecms/manage_uploads.php /path/to/elitecms/manage_uploads.php.disabled
Implement file upload restrictions
allAdd server-side validation to restrict file types and extensions
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads
- Restrict network access to EliteCMS administration interface
🔍 How to Verify
Check if Vulnerable:
Check if manage_uploads.php exists and is accessible in EliteCMS v1.01 installationCheck Version:
Check EliteCMS version in configuration files or admin panelVerify Fix Applied:
Verify manage_uploads.php is disabled or removed, and test file upload functionality with restricted file types📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to manage_uploads.php
- PHP file uploads with suspicious names
- Multiple failed upload attempts
Network Indicators:
- POST requests to manage_uploads.php with file uploads
- Unusual outbound connections from web server
SIEM Query:
source="web_logs" AND uri="/manage_uploads.php" AND method="POST" AND (file_extension="php" OR file_extension="jsp" OR file_extension="asp")🔗 References
- https://github.com/Num-Nine/CVE/issues/2
- https://github.com/Num-Nine/CVE/issues/4
- https://github.com/Num-Nine/CVE/wiki/Any-file-is-uploaded-to-eliteCMS1.01
- https://github.com/Num-Nine/CVE/issues/2
- https://github.com/Num-Nine/CVE/issues/4
- https://github.com/Num-Nine/CVE/wiki/Any-file-is-uploaded-to-eliteCMS1.01
