CVE-2021-44018
📋 TL;DR
A memory corruption vulnerability in Siemens JT2Go, Solid Edge, and Teamcenter Visualization products allows attackers to execute arbitrary code by tricking users into opening malicious PAR files. This affects users of these specific Siemens engineering software products running vulnerable versions. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- JT2Go
- Solid Edge SE2021
- Solid Edge SE2022
- Teamcenter Visualization V13.1
- Teamcenter Visualization V13.2
- Teamcenter Visualization V13.3
📦 What is this software?
Jt2go by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
Solid Edge by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the current user, potentially leading to full system compromise, data theft, or lateral movement within the network.
Likely Case
Local user tricked into opening malicious PAR file leads to code execution in their context, potentially compromising their workstation and credentials.
If Mitigated
Limited to user-level access if proper application sandboxing and least privilege principles are implemented.
🎯 Exploit Status
Requires user interaction (opening malicious PAR file); no public exploit available but vulnerability is well-documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: JT2Go V13.2.0.7, Solid Edge SE2021 MP9, Solid Edge SE2022 MP1, Teamcenter Visualization V13.1.0.9, V13.2.0.7, V13.3.0.1
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-301589.pdf
Restart Required: Yes
Instructions:
1. Download appropriate patch from Siemens support portal. 2. Close all affected applications. 3. Install the update. 4. Restart system. 5. Verify version is updated.
🔧 Temporary Workarounds
Block PAR file execution
windowsPrevent execution of PAR files via application control or file blocking
Using Windows AppLocker or similar: Create rule to block *.par files
User awareness training
allTrain users not to open PAR files from untrusted sources
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized code execution
- Restrict user privileges to limit potential damage from exploitation
🔍 How to Verify
Check if Vulnerable:
Check installed version of affected Siemens software against vulnerable version rangesCheck Version:
Check Help > About in each application or use Windows Programs and FeaturesVerify Fix Applied:
Verify software version matches or exceeds patched versions listed in fix_official section📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening PAR files
- Unexpected process creation from Siemens applications
Network Indicators:
- Downloads of PAR files from untrusted sources
- Outbound connections from Siemens applications to unusual destinations
SIEM Query:
Process creation where parent process contains 'jt2go' or 'solid edge' and child process is suspicious