CVE-2023-37248
📋 TL;DR
This vulnerability allows remote code execution through an out-of-bounds write buffer overflow when parsing malicious PAR files in Tecnomatix Plant Simulation. Attackers can execute arbitrary code with the privileges of the current process. All users of affected versions are vulnerable.
💻 Affected Systems
- Tecnomatix Plant Simulation V2201
- Tecnomatix Plant Simulation V2302
📦 What is this software?
Tecnomatix by Siemens
Tecnomatix by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the affected system, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or remote code execution leading to data exfiltration, system disruption, or installation of persistent malware.
If Mitigated
Limited impact with proper network segmentation and file validation, potentially resulting in application crash without code execution.
🎯 Exploit Status
Exploitation requires crafting a malicious PAR file and convincing a user to open it or placing it where the application will process it automatically.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V2201.0008 for V2201, V2302.0002 for V2302
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-764801.pdf
Restart Required: Yes
Instructions:
1. Download the appropriate patch from Siemens support portal. 2. Close all Plant Simulation instances. 3. Run the installer with administrative privileges. 4. Restart the system.
🔧 Temporary Workarounds
Restrict PAR file processing
windowsBlock or restrict processing of PAR files through application settings or group policies.
User awareness training
allTrain users not to open PAR files from untrusted sources.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized code
- Use network segmentation to isolate Plant Simulation systems from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check Plant Simulation version in Help > About. If version is V2201 below 0008 or V2302 below 0002, system is vulnerable.Check Version:
In Plant Simulation: Help > About menu optionVerify Fix Applied:
Verify version shows V2201.0008 or higher, or V2302.0002 or higher after patching.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing PAR files
- Unexpected process creation from Plant Simulation
Network Indicators:
- Unusual outbound connections from Plant Simulation process
SIEM Query:
Process Creation where Parent Process contains 'PlantSim' AND Command Line contains suspicious patterns