CVE-2025-4790
📋 TL;DR
CVE-2025-4790 is a critical buffer overflow vulnerability in FreeFloat FTP Server 1.0's GLOB command handler that allows remote attackers to execute arbitrary code or crash the service. This affects all users running FreeFloat FTP Server 1.0 with the vulnerable component enabled. The vulnerability is remotely exploitable without authentication.
💻 Affected Systems
- FreeFloat FTP Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Service disruption through denial of service, potential remote code execution in default configurations
If Mitigated
Limited to service disruption if proper network segmentation and exploit prevention controls are in place
🎯 Exploit Status
Public exploit code is available, making exploitation straightforward for attackers with basic skills
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch available. Consider migrating to a maintained FTP server solution or implementing workarounds.
🔧 Temporary Workarounds
Disable GLOB command
windowsDisable the vulnerable GLOB command handler in FreeFloat FTP Server configuration
Edit FreeFloat FTP Server configuration file to remove or disable GLOB command support
Network segmentation
allRestrict FTP server access to trusted networks only
Configure firewall rules to allow FTP access only from required IP ranges
🧯 If You Can't Patch
- Replace FreeFloat FTP Server with a maintained alternative like FileZilla Server, vsftpd, or ProFTPD
- Implement strict network access controls and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check if FreeFloat FTP Server version 1.0 is installed and runningCheck Version:
Check FreeFloat FTP Server interface or installation directory for version informationVerify Fix Applied:
Verify FreeFloat FTP Server has been removed or replaced with a secure alternative📡 Detection & Monitoring
Log Indicators:
- Multiple failed GLOB command attempts
- Unusual GLOB command patterns with long parameters
- FTP server crash logs
Network Indicators:
- Excessive GLOB command usage from single source
- FTP traffic patterns matching known exploit signatures
SIEM Query:
source="ftp_logs" AND (command="GLOB" AND parameter_length>1000) OR (event="crash" AND process="FreeFloat FTP")🔗 References
- https://fitoxs.com/exploit/exploit-3b4e822c5e445f2fe48f704745994fc63a9300dacddaaeb5290b1149dd2d7704.txt
- https://vuldb.com/?ctiid.309099
- https://vuldb.com/?id.309099
- https://vuldb.com/?submit.572479
- https://fitoxs.com/exploit/exploit-3b4e822c5e445f2fe48f704745994fc63a9300dacddaaeb5290b1149dd2d7704.txt
