CVE-2017-6041
📋 TL;DR
This CVE describes an unrestricted file upload vulnerability in Marel Food Processing Systems equipment that allows attackers to upload arbitrary firmware changes without authentication. Affected systems include M3000/M3210 terminals, desktop software, MAC4 controllers, SensorX X-ray machines, and MWS2 weighing systems across multiple food processing platforms.
💻 Affected Systems
- M3000 terminal
- M3210 terminal
- M3000 desktop software
- MAC4 controller
- SensorX23 X-ray machine
- SensorX25 X-ray machine
- MWS2 weighing system
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of food processing systems allowing firmware manipulation, operational disruption, potential safety hazards, and data integrity issues in industrial control environments.
Likely Case
Unauthorized firmware modifications leading to operational disruption, data manipulation, or system malfunction in food processing facilities.
If Mitigated
Limited impact with proper network segmentation, access controls, and monitoring in place to detect unauthorized upload attempts.
🎯 Exploit Status
Unrestricted upload vulnerabilities typically have low exploitation complexity, especially when unauthenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact vendor for specific patched versions
Vendor Advisory: https://ics-cert.us-cert.gov/advisories/ICSA-17-094-02
Restart Required: Yes
Instructions:
1. Contact Marel Food Processing Systems for firmware updates
2. Apply firmware patches to all affected systems
3. Restart systems after patching
4. Verify patch application through vendor documentation
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from untrusted networks and implement strict firewall rules
Access Control
allImplement strict authentication and authorization controls for firmware upload functionality
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems from untrusted networks
- Deploy intrusion detection systems to monitor for unauthorized firmware upload attempts
🔍 How to Verify
Check if Vulnerable:
Check system firmware version against vendor patched versions. Systems without authentication for firmware upload are vulnerable.Check Version:
Consult vendor documentation for firmware version checking commands specific to each systemVerify Fix Applied:
Verify firmware version matches vendor's patched version and test that unauthorized uploads are blocked.📡 Detection & Monitoring
Log Indicators:
- Unauthorized firmware upload attempts
- Unexpected firmware version changes
- Authentication bypass logs
Network Indicators:
- Unexpected firmware upload traffic to industrial control systems
- Unauthorized connections to firmware update ports
SIEM Query:
Search for: firmware upload events from unauthorized sources OR authentication failures followed by successful uploads