CVE-2024-48760
📋 TL;DR
CVE-2024-48760 is a critical remote code execution vulnerability in GestioIP v3.5.7 that allows attackers to upload malicious files and overwrite legitimate CGI scripts. This enables complete system compromise through arbitrary command execution. Organizations using vulnerable GestioIP installations are affected.
💻 Affected Systems
- GestioIP
📦 What is this software?
Gestioip by Gestioip
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with attacker gaining root/admin privileges, data exfiltration, ransomware deployment, and persistent backdoor installation.
Likely Case
Unauthorized access to network management data, lateral movement within the network, and installation of cryptocurrency miners or botnet clients.
If Mitigated
Attack blocked at network perimeter or detected by file integrity monitoring before execution.
🎯 Exploit Status
Exploit involves simple file upload to overwrite upload.cgi with malicious perlcmd.cgi. Public GitHub repository contains proof-of-concept.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://www.gestioip.net/index.html
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates and consider workarounds or alternative solutions.
🔧 Temporary Workarounds
Disable file upload functionality
linuxRemove or restrict access to file upload endpoints in GestioIP configuration
# Remove or rename upload.cgi file
sudo mv /path/to/gestioip/cgi-bin/upload.cgi /path/to/gestioip/cgi-bin/upload.cgi.disabled
Implement strict file upload validation
allAdd file type validation and size restrictions to prevent malicious uploads
# Add to Apache/Nginx configuration or .htaccess
SetEnvIf Request_URI "\.cgi$" block_upload
Deny from env=block_upload
🧯 If You Can't Patch
- Isolate GestioIP instance in separate network segment with strict firewall rules
- Implement web application firewall (WAF) with file upload protection rules
🔍 How to Verify
Check if Vulnerable:
Check if GestioIP version is 3.5.7 and file upload functionality is accessible without authenticationCheck Version:
grep -r 'version' /path/to/gestioip/ | grep -i '3.5.7'Verify Fix Applied:
Verify upload.cgi file cannot be overwritten and file uploads are properly validated📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to CGI directories
- Multiple failed upload attempts
- Execution of perlcmd.cgi or modified upload.cgi
Network Indicators:
- POST requests to upload.cgi with unusual file extensions
- Outbound connections from GestioIP server to unknown IPs
SIEM Query:
source="gestioip.log" AND (uri="*upload.cgi*" OR uri="*perlcmd.cgi*")