CVE-2023-38527
📋 TL;DR
This vulnerability allows remote code execution through specially crafted X_T files in Siemens Parasolid and Teamcenter Visualization software. An attacker can exploit an out-of-bounds read vulnerability to execute arbitrary code in the context of the current process. Affected users include those running vulnerable versions of Parasolid V34.1, V35.0, and Teamcenter Visualization V14.1, V14.2, V14.3, and V2312.
💻 Affected Systems
- Parasolid V34.1
- Parasolid V35.0
- Teamcenter Visualization V14.1
- Teamcenter Visualization V14.2
- Teamcenter Visualization V14.3
- Teamcenter Visualization V2312
📦 What is this software?
Parasolid by Siemens
Parasolid by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the application process, potentially leading to data theft, system manipulation, or lateral movement.
Likely Case
Application crash or denial of service, with potential for arbitrary code execution if the attacker can control memory layout.
If Mitigated
Application crash without code execution if memory protections (ASLR, DEP) are effective.
🎯 Exploit Status
Exploitation requires user to open a malicious X_T file. No authentication is needed beyond file access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Parasolid V34.1.258, V35.0.254; Teamcenter Visualization V14.2.0.12, V14.3.0.9, V2312.0004
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-407785.html
Restart Required: Yes
Instructions:
1. Download patches from Siemens support portal. 2. Apply patches according to vendor documentation. 3. Restart affected applications. 4. Verify version updates.
🔧 Temporary Workarounds
Restrict X_T file processing
allBlock or restrict processing of X_T files from untrusted sources
Application sandboxing
allRun vulnerable applications with reduced privileges or in sandboxed environments
🧯 If You Can't Patch
- Implement strict file validation for X_T files from untrusted sources
- Use application allowlisting to prevent unauthorized execution of vulnerable software
🔍 How to Verify
Check if Vulnerable:
Check application version against affected versions list. If using vulnerable version and processing X_T files, system is vulnerable.Check Version:
Check version through application interface or consult vendor documentation for version query commands.Verify Fix Applied:
Verify application version matches patched versions: Parasolid V34.1.258+, V35.0.254+; Teamcenter Visualization V14.2.0.12+, V14.3.0.9+, V2312.0004+📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing X_T files
- Unexpected process termination
- Memory access violation errors
Network Indicators:
- Downloads of X_T files from untrusted sources
- File transfers to vulnerable systems
SIEM Query:
Process: ("parasolid.exe" OR "teamcenter*.exe") AND EventID: 1000 (Application Crash)