CVE-2022-38484
📋 TL;DR
This vulnerability allows authenticated remote attackers to upload arbitrary files to any location on the AgeVolt Portal server through directory traversal in the file upload functionality. Attackers can achieve remote code execution by uploading malicious files like web shells. Only AgeVolt Portal versions before 0.1 are affected.
💻 Affected Systems
- AgeVolt Portal
📦 What is this software?
Agevolt by Agevolt
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Web shell deployment leading to data theft, credential harvesting, and further exploitation of the server and connected systems.
If Mitigated
Limited impact with proper file upload validation, restricted permissions, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.1
Vendor Advisory: https://citadelo.com/download/CVE-2022-38484.pdf
Restart Required: Yes
Instructions:
1. Download AgeVolt Portal version 0.1 or later from official sources. 2. Backup current configuration and data. 3. Stop the AgeVolt Portal service. 4. Replace the installation with the patched version. 5. Restart the service and verify functionality.
🔧 Temporary Workarounds
Disable File Upload
allTemporarily disable the vulnerable file upload functionality in the System Setup menu.
# Modify AgeVolt Portal configuration to remove file upload options
Web Server File Restriction
allConfigure web server to block directory traversal attempts and restrict upload locations.
# For Apache: Set 'AllowOverride None' in upload directory configuration
# For Nginx: Use 'client_body_temp_path' with secure permissions
🧯 If You Can't Patch
- Implement strict file upload validation: allow only specific file types, validate file names, and restrict upload directories.
- Apply network segmentation: isolate AgeVolt Portal servers, implement strict firewall rules, and monitor for suspicious upload activity.
🔍 How to Verify
Check if Vulnerable:
Check AgeVolt Portal version in admin interface or configuration files. If version is below 0.1, the system is vulnerable.Check Version:
# Check version in AgeVolt Portal web interface or configuration filesVerify Fix Applied:
After patching, verify version is 0.1 or higher and test file upload functionality with traversal attempts (e.g., '../../malicious.php') which should be rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with directory traversal patterns (e.g., '../', '..\')
- Uploads of executable file types (.php, .jsp, .asp) to unexpected locations
- Multiple failed authentication attempts followed by successful login and file upload
Network Indicators:
- HTTP POST requests to upload endpoints with suspicious filenames
- Unexpected outbound connections from the AgeVolt Portal server
SIEM Query:
source="agevolt.log" AND ("../" OR "..\" OR ".php" OR ".jsp") AND action="upload"