CVE-2024-9280
📋 TL;DR
This vulnerability allows remote attackers to upload arbitrary files without restrictions in the kvf-admin software. Attackers can exploit this to upload malicious files like webshells or malware. Organizations using affected versions of kvf-admin are at risk.
💻 Affected Systems
- kalvinGit kvf-admin
📦 What is this software?
Kvf Admin by Kvf Admin Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via webshell upload leading to remote code execution, data theft, and lateral movement within the network.
Likely Case
Attackers upload webshells to gain persistent access, deface websites, or deploy ransomware payloads.
If Mitigated
File uploads are blocked or properly validated, preventing malicious file execution.
🎯 Exploit Status
Exploit details are publicly disclosed on GitHub and vuldb.com, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - check commits after f12a94dc1ebb7d1c51ee978a85e4c7ed75c620ff
Vendor Advisory: None found
Restart Required: Yes
Instructions:
1. Check if your kvf-admin commit is f12a94dc1ebb7d1c51ee978a85e4c7ed75c620ff or earlier. 2. Update to latest version from official repository. 3. Restart the application.
🔧 Temporary Workarounds
File Upload Restriction
allImplement server-side file validation to restrict uploads to specific file types and sizes
Web Application Firewall Rules
allDeploy WAF rules to block suspicious file upload patterns and extensions
🧯 If You Can't Patch
- Implement strict file upload validation in FileUploadKit.java to check file types, extensions, and content
- Deploy the application behind a reverse proxy with file upload filtering and monitoring
🔍 How to Verify
Check if Vulnerable:
Check your kvf-admin git commit hash against f12a94dc1ebb7d1c51ee978a85e4c7ed75c620ff. If equal or earlier, you're vulnerable.Check Version:
git log --oneline -1Verify Fix Applied:
Test file upload functionality with malicious file extensions (.jsp, .php, .exe) - they should be rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with suspicious extensions
- Large number of upload requests from single IP
- Uploads to unexpected directories
Network Indicators:
- POST requests to upload endpoints with unusual file types
- Traffic patterns showing file upload spikes
SIEM Query:
source="web_logs" AND (uri="*upload*" OR uri="*file*" OR method="POST") AND (file_ext="jsp" OR file_ext="php" OR file_ext="exe" OR file_ext="sh")