CVE-2023-3768
📋 TL;DR
This vulnerability allows attackers on the same network to send specially crafted MMS protocol packets that cause a denial-of-service condition, forcing affected devices to reboot completely. It affects Ingeteam products that use the MMS protocol for communication. The vulnerability stems from improper input validation in the MMS protocol implementation.
💻 Affected Systems
- Ingeteam industrial control products with MMS protocol support
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system reboot causing extended service disruption, potential data loss, and cascading failures in industrial control systems.
Likely Case
Service disruption through repeated reboots, impacting operational continuity in industrial environments.
If Mitigated
Limited impact with proper network segmentation and monitoring, though reboots may still occur if exploited.
🎯 Exploit Status
Exploitation requires network access but no authentication; fuzzing techniques can identify triggering packets
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-ingeteam-products
Restart Required: Yes
Instructions:
1. Check vendor advisory for specific patch versions. 2. Apply vendor-provided firmware/software updates. 3. Restart affected devices after patching. 4. Verify MMS protocol functionality post-update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate MMS protocol traffic to trusted networks only
Firewall Rules
allRestrict MMS protocol access to authorized IP addresses only
🧯 If You Can't Patch
- Implement strict network access controls to limit MMS protocol exposure
- Deploy network monitoring to detect anomalous MMS traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor advisory; test with controlled MMS packet fuzzing in lab environmentCheck Version:
Vendor-specific command; typically through device management interface or CLIVerify Fix Applied:
Verify firmware version matches patched version from vendor; test with previously triggering MMS packets📡 Detection & Monitoring
Log Indicators:
- Unexpected device reboots
- MMS protocol errors
- Connection resets
Network Indicators:
- Malformed MMS packets
- Unusual MMS traffic patterns
- Repeated connection attempts
SIEM Query:
source="industrial_device" AND (event_type="reboot" OR protocol="MMS" AND status="error")