CVE-2023-29160
📋 TL;DR
A stack-based buffer overflow vulnerability in FRENIC RHC Loader v1.1.0.3 allows attackers to execute arbitrary code or disclose sensitive information by tricking users into opening malicious FNE files. This affects industrial control systems using Fuji Electric's FRENIC RHC Loader software for programming drives and controllers.
💻 Affected Systems
- FRENIC RHC Loader
📦 What is this software?
Frenic Rhc Loader by Fujielectric
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining control of the industrial control system, potentially leading to physical damage, production disruption, or safety incidents.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive industrial control data and potential manipulation of drive parameters.
If Mitigated
Limited impact with proper network segmentation and user awareness preventing malicious file execution.
🎯 Exploit Status
Requires social engineering to deliver malicious file. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.1.0.4 or later
Vendor Advisory: https://felib.fujielectric.co.jp/download/details.htm?dataid=45829407&site=global&lang=en
Restart Required: Yes
Instructions:
1. Download updated version from Fuji Electric website. 2. Uninstall current version. 3. Install new version. 4. Restart system.
🔧 Temporary Workarounds
Restrict FNE file execution
windowsBlock execution of FNE files from untrusted sources
User awareness training
allTrain users to only open FNE files from trusted sources
🧯 If You Can't Patch
- Isolate affected systems from production network
- Implement application whitelisting to block unauthorized executables
🔍 How to Verify
Check if Vulnerable:
Check FRENIC RHC Loader version in Help > About menuCheck Version:
Not applicable - check via application GUIVerify Fix Applied:
Verify version is v1.1.0.4 or later in Help > About menu📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes
- Suspicious file access patterns for FNE files
Network Indicators:
- Unusual outbound connections from FRENIC RHC Loader
SIEM Query:
source="FRENIC_RHC_Loader" AND (event_type="crash" OR file_extension=".fne")