CVE-2018-7573
📋 TL;DR
CVE-2018-7573 is a buffer overflow vulnerability in FTPShell Client 6.7 that allows a malicious FTP server to crash the client application and potentially execute arbitrary code on the victim's machine. This affects users who connect to untrusted FTP servers using the vulnerable FTPShell Client software.
💻 Affected Systems
- FTPShell Client
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete compromise of the victim machine, data theft, and lateral movement within the network.
Likely Case
Application crash and denial of service, with potential for code execution if exploit is weaponized.
If Mitigated
No impact if vulnerable software is not used or properly patched.
🎯 Exploit Status
Exploit code is publicly available. The vulnerability requires the victim to connect to a malicious FTP server.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or switching to alternative FTP client software.
🔧 Temporary Workarounds
Use alternative FTP client
windowsReplace FTPShell Client with a different, secure FTP client software.
Network filtering
allBlock connections to untrusted FTP servers at the network level.
🧯 If You Can't Patch
- Discontinue use of FTPShell Client 6.7 immediately
- Implement application whitelisting to prevent execution of FTPShell Client
🔍 How to Verify
Check if Vulnerable:
Check if FTPShell Client version 6.7 is installed on the system.Check Version:
Check program properties or About dialog in FTPShell Client interfaceVerify Fix Applied:
Verify that FTPShell Client 6.7 has been removed or replaced with alternative software.📡 Detection & Monitoring
Log Indicators:
- FTPShell Client crash logs
- Unexpected application termination events
Network Indicators:
- Connections to FTP servers followed by application crashes
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="FTPShell.exe"