CVE-2024-11791
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Fuji Electric Monitouch V-SFT installations by tricking users into opening malicious V8C files. Attackers can exploit a stack-based buffer overflow during file parsing to gain code execution in the current process context. Organizations using affected versions of Monitouch V-SFT software are at risk.
💻 Affected Systems
- Fuji Electric Monitouch V-SFT
📦 What is this software?
Monitouch V Sft by Fujielectric
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the engineering workstation, potentially enabling lateral movement to industrial control systems.
Likely Case
Attacker gains code execution on engineering workstation, allowing data theft, manipulation of HMI configurations, or installation of persistent malware.
If Mitigated
Limited impact due to network segmentation, application whitelisting, and user awareness preventing malicious file execution.
🎯 Exploit Status
Exploitation requires social engineering to deliver malicious V8C file. ZDI-CAN-24450 indicates professional vulnerability research.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Fuji Electric advisory for specific patched version
Vendor Advisory: https://www.fujielectric.com/global/support/security/
Restart Required: Yes
Instructions:
1. Check Fuji Electric security advisory for patch details
2. Download official patch from Fuji Electric
3. Apply patch following vendor instructions
4. Restart affected systems
🔧 Temporary Workarounds
Restrict V8C file handling
windowsBlock or restrict execution/opening of V8C files from untrusted sources
Application control
windowsImplement application whitelisting to prevent unauthorized execution
🧯 If You Can't Patch
- Segment Monitouch V-SFT workstations from critical networks
- Implement strict user awareness training about opening untrusted files
🔍 How to Verify
Check if Vulnerable:
Check Monitouch V-SFT version against Fuji Electric advisory. If using V8C file functionality, assume vulnerable until patched.Check Version:
Check application version through Windows Programs and Features or application About dialogVerify Fix Applied:
Verify patch installation through version check and test V8C file parsing functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of Monitouch V-SFT
- Suspicious file operations involving V8C files
- Unusual network connections from engineering workstations
Network Indicators:
- Unexpected outbound connections from Monitouch V-SFT systems
- File transfers of V8C files to engineering workstations
SIEM Query:
Process:Monitouch AND (EventID:1000 OR FileExtension:.v8c) OR Network:Outbound FROM EngineeringWorkstation