CVE-2024-56839
📋 TL;DR
A code injection vulnerability in Siemens RUGGEDCOM ROX devices allows attackers to execute arbitrary code as root when Virtual Routing and Forwarding (VRF) is enabled. This affects multiple MX and RX series models running versions below V2.17.0. Successful exploitation gives complete control of affected industrial network devices.
💻 Affected Systems
- RUGGEDCOM ROX MX5000
- RUGGEDCOM ROX MX5000RE
- RUGGEDCOM ROX RX1400
- RUGGEDCOM ROX RX1500
- RUGGEDCOM ROX RX1501
- RUGGEDCOM ROX RX1510
- RUGGEDCOM ROX RX1511
- RUGGEDCOM ROX RX1512
- RUGGEDCOM ROX RX1524
- RUGGEDCOM ROX RX1536
- RUGGEDCOM ROX RX5000
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing root-level code execution, enabling attackers to disrupt industrial operations, pivot to other network segments, or establish persistent backdoors.
Likely Case
Remote code execution leading to device takeover, configuration modification, and potential disruption of industrial control systems.
If Mitigated
Limited impact if VRF is disabled or devices are isolated from untrusted networks with proper segmentation.
🎯 Exploit Status
Exploitation requires VRF to be enabled. No public exploit code available at time of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V2.17.0
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-912274.html
Restart Required: Yes
Instructions:
1. Download V2.17.0 firmware from Siemens support portal. 2. Backup device configuration. 3. Upload and install firmware update via web interface or CLI. 4. Reboot device. 5. Verify version is V2.17.0 or higher.
🔧 Temporary Workarounds
Disable VRF Feature
allIf VRF functionality is not required, disable it to eliminate the vulnerability.
configure terminal
no vrf configuration
write memory
Network Segmentation
allIsolate affected devices from untrusted networks and restrict access to management interfaces.
🧯 If You Can't Patch
- Disable VRF feature immediately if not required for operations
- Implement strict network access controls and segment affected devices from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check device version via web interface or CLI command 'show version'. If version is below V2.17.0 and VRF is enabled, device is vulnerable.Check Version:
show versionVerify Fix Applied:
Verify version is V2.17.0 or higher using 'show version' command and confirm VRF configuration if still required.📡 Detection & Monitoring
Log Indicators:
- Unusual configuration changes to VRF settings
- Unexpected device reboots
- Suspicious process execution
Network Indicators:
- Unusual traffic patterns from device management interfaces
- Unexpected outbound connections from industrial devices
SIEM Query:
source="industrial-device-logs" AND (event="configuration_change" AND config_field="vrf" OR event="process_execution" AND user="root")