Full Report
Siemens Teamcenter Visualization and JT2Go are affected by multiple file parsing vulnerabilities that could be triggered when the application reads a malicious file in CGM or RAS format. If a user is tricked to open a malicious file with the affected products, this could lead the application to crash or potentially lead to arbitrary code execution. Siemens has released updates for the affected products and recommends to update to the latest versions.
Analysis Summary
# Vulnerability: Multiple File Parsing Flaws in Siemens Teamcenter Visualization and JT2Go
## CVE Details
* **CVE ID:** CVE-2022-41278 through CVE-2022-41288, CVE-2022-45484
* **CVSS Score:** 7.8 (High) - *Note: While individual sub-components list lower base scores for specific DoS vectors (3.3), the aggregate advisory impact for arbitrary code execution reaches 7.8.*
* **CWE:**
* CWE-369: Divide By Zero
* CWE-770: Allocation of Resources Without Limits (Stack Exhaustion)
* CWE-125: Out-of-bounds Read
## Affected Systems
* **Products:**
* JT2Go
* Teamcenter Visualization (V13.2, V13.3, V14.0, V14.1)
* **Versions:**
* JT2Go: All versions < V14.1.0.6
* Teamcenter Visualization V13.2: All versions < V13.2.0.12
* Teamcenter Visualization V13.3: All versions < V13.3.0.9
* Teamcenter Visualization V14.0: All versions < V14.0.0.5
* Teamcenter Visualization V14.1: All versions < V14.1.0.6
* **Configurations:** Systems processing Computer Graphics Metafile (CGM) or Sun Raster (RAS) file formats.
## Vulnerability Description
Multiple vulnerabilities exist in the file parsing libraries of the affected products:
1. **CGM Parsing (CGM_NIST_Loader.dll):** Contains "Divide By Zero" and "Stack Exhaustion" flaws. These are triggered when the application processes a specially crafted CGM file.
2. **RAS Parsing (CCITT_G4Decode.dll):** Contains an "Out-of-bounds Read" vulnerability. When a malicious RAS file is parsed, it can lead to memory corruption.
The primary technical risks involve application crashes (Denial of Service) or, more critically, the potential for an attacker to achieve arbitrary code execution in the context of the current process.
## Exploitation
* **Status:** PoC Available (Indicated by CVSS "Exploit Code Maturity: Proof-of-Concept").
* **Complexity:** Medium (Requires a user to be tricked into opening a file).
* **Attack Vector:** Local (User-initiated opening of a malicious file).
## Impact
* **Confidentiality:** High (Potential for unauthorized data access via code execution).
* **Integrity:** High (Potential for unauthorized modification via code execution).
* **Availability:** High (Application crash/Denial of Service).
## Remediation
### Patches
Siemens recommends updating to the following versions or later:
* **JT2Go:** V14.1.0.6
* **Teamcenter Visualization V13.2:** V13.2.0.12
* **Teamcenter Visualization V13.3:** V13.3.0.9
* **Teamcenter Visualization V14.0:** V14.0.0.5
* **Teamcenter Visualization V14.1:** V14.1.0.6
### Workarounds
* **Avoid Untrusted Files:** Do not open CGM or RAS files from unknown or untrusted sources.
* **Least Privilege:** Operate the software under a user account with minimal required privileges to limit the impact of potential code execution.
## Detection
* **Indicators of Compromise:** Unexpected application crashes when opening drawing files; unusual memory usage patterns; unauthorized process spawning from `JT2Go.exe` or Teamcenter Visualization binaries.
* **Detection Methods:** Use EDR/AV tools to monitor for suspicious child processes originating from Siemens visualization software. File integrity monitoring can be used to ensure the patched DLLs (`CGM_NIST_Loader.dll` and `CCITT_G4Decode.dll`) are in place.
## References
* **Vendor Advisory:** hxxps://cert-portal.siemens[.]com/productcert/pdf/ssa-700053.pdf
* **Siemens Support:** hxxps://support.sw.siemens[.]com/
* **Industrial Security Guidelines:** hxxps://www.siemens[.]com/cert/operational-guidelines-industrial-security