CVE-2024-57392
📋 TL;DR
A buffer overflow vulnerability in ProFTPD allows remote attackers to execute arbitrary code or cause denial of service by sending a maliciously crafted message to the FTP service port. This affects ProFTPD installations with the vulnerable commit. Attackers can potentially gain full control of affected FTP servers.
💻 Affected Systems
- ProFTPD
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, lateral movement, and persistent backdoor installation.
Likely Case
Denial of service causing FTP service crashes and disruption of file transfer operations.
If Mitigated
Limited impact if network segmentation, firewalls, and intrusion prevention systems block malicious traffic.
🎯 Exploit Status
Exploitation requires crafting specific malicious FTP messages. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://lists.debian.org/debian-lts-announce/2025/03/msg00003.html
Restart Required: Yes
Instructions:
1. Check current ProFTPD version. 2. Apply vendor-provided security patches. 3. Restart ProFTPD service. 4. Verify patch installation.
🔧 Temporary Workarounds
Network Segmentation
allRestrict FTP service access to trusted networks only
Firewall Rules
allBlock or restrict access to FTP port (default 21) from untrusted sources
🧯 If You Can't Patch
- Implement strict network access controls to limit FTP service exposure
- Deploy intrusion prevention systems to detect and block buffer overflow attempts
🔍 How to Verify
Check if Vulnerable:
Check if ProFTPD version contains commit 4017eff8 or check with vendor security advisoryCheck Version:
proftpd -v or check package manager (apt list --installed | grep proftpd)Verify Fix Applied:
Verify ProFTPD version is updated to patched version and service is running normally📡 Detection & Monitoring
Log Indicators:
- Unusual FTP connection attempts
- ProFTPD service crashes
- Buffer overflow error messages in logs
Network Indicators:
- Malformed FTP protocol packets
- Unusual traffic patterns to FTP port
SIEM Query:
source="proftpd.log" AND ("buffer overflow" OR "segmentation fault" OR "crash")