CVE-2022-47936
📋 TL;DR
This CVE describes a stack overflow vulnerability in Siemens JT Open, JT Utilities, and Parasolid software when parsing specially crafted JT files. An attacker could exploit this to execute arbitrary code with the privileges of the current process. All users of affected versions are vulnerable.
💻 Affected Systems
- JT Open
- JT Utilities
- Parasolid V34.0
- Parasolid V34.1
- Parasolid V35.0
- Parasolid V35.1
📦 What is this software?
Parasolid by Siemens
Parasolid by Siemens
Parasolid by Siemens
Parasolid by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Local privilege escalation or application crash leading to denial of service.
If Mitigated
Application crash without code execution if memory protections are enabled.
🎯 Exploit Status
Exploitation requires crafting a malicious JT file and convincing a user to open it. No authentication is required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: JT Open V11.2.3.0, JT Utilities V13.2.3.0, Parasolid V34.0 V34.0.252, Parasolid V34.1 V34.1.242, Parasolid V35.0 V35.0.170, Parasolid V35.1 V35.1.150
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-836777.pdf
Restart Required: Yes
Instructions:
1. Download the updated version from Siemens support portal. 2. Install the update following vendor instructions. 3. Restart affected applications or systems.
🔧 Temporary Workarounds
Restrict JT file processing
allBlock or restrict processing of JT files from untrusted sources.
Application sandboxing
allRun affected applications in sandboxed environments to limit impact.
🧯 If You Can't Patch
- Implement strict file validation for JT files before processing.
- Use application allowlisting to prevent unauthorized software execution.
🔍 How to Verify
Check if Vulnerable:
Check installed version against affected version ranges. Review application logs for crashes when processing JT files.Check Version:
Check application about dialog or use vendor-specific version query commands.Verify Fix Applied:
Confirm version is updated to patched versions listed above. Test with known safe JT files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening JT files
- Memory access violation errors in logs
- Unexpected process termination
Network Indicators:
- Unexpected JT file downloads from untrusted sources
- Outbound connections from affected applications after file processing
SIEM Query:
source="application_logs" AND (event="crash" OR event="access_violation") AND process="*JT*" OR process="*Parasolid*"