CVE-2024-1941
📋 TL;DR
Delta Electronics CNCSoft-B versions 1.0.0.4 and prior contain a stack-based buffer overflow vulnerability that could allow remote attackers to execute arbitrary code on affected systems. This affects industrial control systems using CNCSoft-B software for CNC machine programming and management. Successful exploitation could compromise the entire CNC system.
💻 Affected Systems
- Delta Electronics CNCSoft-B
📦 What is this software?
Cncsoft B by Deltaww
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attacker to execute arbitrary code, disrupt manufacturing operations, manipulate CNC programs, and potentially cause physical damage to equipment.
Likely Case
Remote code execution leading to CNC system compromise, production disruption, and potential lateral movement to other industrial systems.
If Mitigated
Limited impact if systems are properly segmented, monitored, and have additional security controls in place.
🎯 Exploit Status
Buffer overflow vulnerabilities typically have low exploitation complexity once details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to version newer than 1.0.0.4
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-060-01
Restart Required: Yes
Instructions:
1. Contact Delta Electronics for updated software version
2. Backup CNC programs and configurations
3. Install the updated CNCSoft-B version
4. Restart the system
5. Verify proper operation
🔧 Temporary Workarounds
Network Segmentation
allIsolate CNC systems from general network and internet access
Firewall Rules
windowsRestrict network access to CNCSoft-B systems
netsh advfirewall firewall add rule name="Block CNCSoft-B" dir=in action=block program="C:\Program Files\Delta Electronics\CNCSoft-B\cncsoft.exe" enable=yes
🧯 If You Can't Patch
- Implement strict network segmentation to isolate CNC systems
- Deploy application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check CNCSoft-B version in Help > About menu or program propertiesCheck Version:
Check Help > About in CNCSoft-B applicationVerify Fix Applied:
Verify version is newer than 1.0.0.4 and test basic CNC programming functions📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from CNCSoft-B
- Memory access violations in application logs
- Unexpected network connections from CNC system
Network Indicators:
- Unusual traffic patterns to/from CNC systems
- Attempts to exploit buffer overflow patterns
SIEM Query:
source="cncsoft.log" AND ("access violation" OR "buffer overflow" OR "unexpected termination")