CVE-2023-36754
📋 TL;DR
This vulnerability allows authenticated privileged remote attackers to execute arbitrary code with root privileges on affected Siemens RUGGEDCOM ROX devices. The command injection occurs in the SCEP server configuration URL parameter due to insufficient input validation. All versions below V2.16.0 of multiple RUGGEDCOM ROX models are affected.
💻 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?
Ruggedcom Rox Mx5000re Firmware by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root-level code execution, allowing attackers to disrupt industrial operations, steal sensitive data, or pivot to other network segments.
Likely Case
Privileged authenticated attackers gaining persistent access to industrial control systems, potentially disrupting operations or exfiltrating configuration data.
If Mitigated
Limited impact if proper network segmentation, authentication controls, and monitoring prevent exploitation attempts.
🎯 Exploit Status
Exploitation requires authenticated privileged access. Command injection vulnerabilities are typically easy to exploit once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V2.16.0
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-146325.pdf
Restart Required: Yes
Instructions:
1. Download firmware version V2.16.0 or later from Siemens support portal. 2. Backup device configuration. 3. Apply firmware update following vendor documentation. 4. Verify successful update and restore configuration if needed.
🔧 Temporary Workarounds
Restrict Web Interface Access
allLimit access to the web interface to trusted IP addresses only using firewall rules or network segmentation.
Disable SCEP Server Configuration
allIf SCEP server functionality is not required, disable it through the device configuration.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from untrusted networks
- Enforce strong authentication and least privilege access controls for administrative accounts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If version is below V2.16.0, device is vulnerable.Check Version:
Check via web interface: System > About, or via CLI: show versionVerify Fix Applied:
Verify firmware version is V2.16.0 or higher after applying update.📡 Detection & Monitoring
Log Indicators:
- Unusual SCEP configuration changes
- Multiple failed authentication attempts followed by successful login
- Unexpected command execution patterns
Network Indicators:
- Unusual outbound connections from industrial devices
- Traffic to unexpected ports from affected devices
SIEM Query:
source="industrial_device" AND (event="configuration_change" OR event="authentication_success") AND user="privileged_account"