CVE-2024-58299
📋 TL;DR
PCMan FTP Server 2.0 contains a critical buffer overflow vulnerability in the 'pwd' command that allows remote attackers to execute arbitrary code. Attackers can exploit this during FTP login by sending a specially crafted payload to overwrite memory and potentially gain full system control. Anyone running PCMan FTP Server 2.0 is affected.
💻 Affected Systems
- PCMan FTP Server
⚠️ 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, ransomware deployment, or persistent backdoor installation.
Likely Case
Remote code execution allowing attackers to install malware, steal credentials, or pivot to other systems on the network.
If Mitigated
Attack blocked at network perimeter or detected before successful exploitation.
🎯 Exploit Status
Exploit code is publicly available and requires no authentication. The vulnerability is trivial to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch exists. The software appears to be abandoned. Recommended action is to migrate to a supported FTP server solution.
🔧 Temporary Workarounds
Network Access Control
allBlock FTP traffic (port 21) at network perimeter and internally using firewall rules.
Service Disablement
windowsStop and disable the PCMan FTP Server service.
sc stop "PCMan FTP Server"
sc config "PCMan FTP Server" start= disabled
🧯 If You Can't Patch
- Immediately remove PCMan FTP Server from all systems and replace with a supported, secure FTP solution.
- Implement strict network segmentation to isolate any remaining vulnerable systems and monitor for exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check if PCMan FTP Server 2.0 is installed and running on port 21. Use 'netstat -an | findstr :21' and check installed programs.Check Version:
Check program files directory for PCMan FTP Server version information or registry entries.Verify Fix Applied:
Verify the service is stopped and disabled, or that the software has been completely uninstalled.📡 Detection & Monitoring
Log Indicators:
- Unusual FTP login attempts with long 'pwd' commands
- Failed authentication attempts followed by buffer overflow patterns
Network Indicators:
- FTP traffic to port 21 with abnormally long command strings
- Multiple failed login attempts from single source
SIEM Query:
source="ftp.log" AND (command="PWD" AND length>100) OR (command CONTAINS "A"*100)