CVE-2024-8338
📋 TL;DR
This critical vulnerability in HFO4 shudong-share 2.4.7 allows remote attackers to upload arbitrary files without restrictions via the /includes/fileReceive.php endpoint. This affects all systems running the vulnerable version, particularly those with the file extension handler component exposed. Note that this software is no longer maintained by the vendor.
💻 Affected Systems
- HFO4 shudong-share
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through remote code execution, data exfiltration, or ransomware deployment via malicious file uploads.
Likely Case
Webshell installation leading to persistent backdoor access, data theft, or use as a pivot point for lateral movement.
If Mitigated
Limited impact if file uploads are restricted to authenticated users only and file validation is implemented.
🎯 Exploit Status
Exploit details are publicly available on GitHub. The vulnerability is straightforward to exploit with minimal technical skill required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None
Vendor Advisory: None
Restart Required: No
Instructions:
No official patch exists since the software is no longer maintained. Consider migrating to supported alternatives.
🔧 Temporary Workarounds
Block fileReceive.php access
allRestrict access to the vulnerable endpoint using web server configuration or firewall rules.
# Apache: <Location "/includes/fileReceive.php"> Require all denied </Location>
# Nginx: location ~ /includes/fileReceive\.php$ { deny all; }
Implement file upload validation
allAdd server-side validation to restrict allowed file types and extensions.
🧯 If You Can't Patch
- Immediately isolate affected systems from internet access.
- Implement strict network segmentation and monitor for suspicious file upload activity.
🔍 How to Verify
Check if Vulnerable:
Check if /includes/fileReceive.php exists and accepts file uploads without proper validation. Test by attempting to upload a file with a malicious extension.Check Version:
Check application configuration or documentation for version information. No standard command available.Verify Fix Applied:
Verify that file uploads are now properly validated or that the endpoint is inaccessible. Test with the same exploit attempt.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /includes/fileReceive.php
- Files with suspicious extensions (e.g., .php, .jsp) being uploaded
- Multiple failed upload attempts
Network Indicators:
- HTTP POST requests to /includes/fileReceive.php with file attachments
- Unusual outbound connections from the server after file uploads
SIEM Query:
source="web_logs" AND uri="/includes/fileReceive.php" AND method="POST"