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# SSA-474231: File Parsing Vulnerability in Simcenter Femap before V2022.2

Publication Date:        2022-07-12
Last Update:             2022-07-12
Current Version:         1.0
CVSS v3.1 Base Score:    7.8


SUMMARY
=======

Siemens Simcenter Femap versions before V2022.2 are affected by an out
of bounds write vulnerability that could be triggered when the
application reads files in X_T format. If a user is tricked to open a
malicious file with the affected application, an attacker could
leverage the vulnerability to perform remote code execution in the
context of the current process.

Siemens has released an update for the Simcenter Femap and recommends
to update to the latest version.


AFFECTED PRODUCTS AND SOLUTION
==============================


* Simcenter Femap 
  - Affected versions:
       All versions < V2022.2
  - Remediation:
       Update to V2022.2 or later version

       See further recommendations from section "Workarounds and Mitigations"
  - Download:
       https://support.sw.siemens.com/


WORKAROUNDS AND MITIGATIONS
===========================

Siemens has identified the following specific workarounds and mitigations that
customers can apply to reduce the risk:

  * Do not open untrusted X_T files in Simcenter Femap

Product specific remediations or mitigations can be found in the section
"Affected Products and Solution".


Please follow the "General Security Recommendations".


GENERAL SECURITY RECOMMENDATIONS
================================

As a general security measure, Siemens strongly recommends to protect
network access to devices with appropriate mechanisms. In order to
operate the devices in a protected IT environment, Siemens recommends
to configure the environment according to Siemens' operational
guidelines for Industrial Security (Download:
https://www.siemens.com/cert/operational-guidelines-industrial-
security), and to follow the recommendations in the product manuals.

Additional information on Industrial Security by Siemens can be found
at: https://www.siemens.com/industrialsecurity


PRODUCT DESCRIPTION
===================

Simcenter Femap is an advanced simulation application for creating,
editing, and inspecting finite element models of complex products or
systems.

VULNERABILITY CLASSIFICATION
============================

The vulnerability classification has been performed by using the CVSS scoring
system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS
environmental score is specific to the customer's environment and will impact
the overall CVSS score. The environmental score should therefore be
individually defined by the customer to accomplish final scoring.

An additional classification has been performed using the CWE classification, a
community-developed list of common software security weaknesses. This serves as
a common language and as a baseline for weakness identification, mitigation,
and prevention efforts. A detailed list of CWE classes can be found at:
https://cwe.mitre.org/.



* Vulnerability CVE-2022-34748

  The affected application contains an out of bounds write past the
  end of an allocated structure while parsing specially crafted X_T
  files. This could allow an attacker to execute code in the context
  of the current process. (ZDI-CAN-17293)

    CVSS v3.1 Base Score: 7.8
    CVSS Vector:          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
    CWE:                  CWE-787: Out-of-bounds Write


ACKNOWLEDGMENTS
===============

Siemens thanks the following parties for their efforts:

   * Trend Micro Zero Day Initiative for coordinated disclosure


ADDITIONAL INFORMATION
======================

For further inquiries on security vulnerabilities in Siemens products and
solutions, please contact the Siemens ProductCERT:

https://www.siemens.com/cert/advisories


HISTORY DATA
============

V1.0 (2022-07-12): Publication Date

TERMS OF USE
============

Siemens Security Advisories are subject to the terms and conditions contained
in Siemens' underlying license terms or other applicable agreements previously
agreed to with Siemens (hereinafter "License Terms"). To the extent applicable
to information, software or documentation made available in or through a
Siemens Security Advisory, the Terms of Use of Siemens' Global Website
(https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in
particular Sections 8-10 of the Terms of Use, shall apply additionally. In case
of conflicts, the License Terms shall prevail over the Terms of Use.

Copyright: Siemens 2022
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