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AUSCERT External Security Bulletin Redistribution
ESB-2022.4038
Advisory (icsa-22-223-01) Siemens Simcenter STAR-CCM+
12 August 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Simcenter STAR-CCM+
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Mitigation
CVE Names: CVE-2022-34659
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-223-01
Comment: CVSS (Max): 5.3 CVE-2022-34659 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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ICS Advisory (ICSA-22-223-01)
Siemens Simcenter STAR-CCM+
Original release date: August 11, 2022
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 5.3
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Siemens
o Equipment: Simcenter STAR-CCM+
o Vulnerability: Exposure of Sensitive Information to an Unauthorized Actor
2. RISK EVALUATION
Simcenter STAR-CCM+ contains an information disclosure vulnerability when using
the Power-on-Demand public license server. Successful exploitation of this
vulnerability could give an attacker access to a system's host, user, and
display name.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Simcenter STAR-CCM+ are affected:
o Simcenter STAR-CCM+: All versions
3.2 VULNERABILITY OVERVIEW
3.2.1 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE 200
Affected applications expose user, host, and display names when the public
license server is used; this could allow an attacker to retrieve this
information.
CVE-2022-34659 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:L/
I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Multiple
o COMPANY HEADQUARTERS LOCATION: Germany
3.4 RESEARCHER
Siemens reported this vulnerability to CISA.
4. MITIGATIONS
Siemens has identified the following specific workarounds and mitigations that
customers can apply to reduce risk:
o Set the environmental variable STARLICENSEHIDE to 1. This will send the
string "unknown" for the user, host, and display name instead of the real
values. The setting is supported since version V8.04 (June 2013) of
Simcenter STAR-M+.
o Avoid using sensitive or personal data in user, host, and display names.
Siemens recommends users configure the environment according to Siemen's
operational guidelines for Industrial Security General Security Recommendations
.
Siemens recommends users follow the General Security Recommendations .
As a general security measure, Siemens strongly recommends protecting network
access to devices with appropriate mechanisms. To operate the devices in a
protected IT environment, Siemens recommends configuring the environment
according to Siemens' operational guidelines for industrial security , and
following the recommendations in the product manuals.
Siemens has additional information on Industrial Security on its webpage .
For more information see Siemens Security Advisory SSA-555707.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls and
isolate them from the business network.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov . Several recommended practices are available
for reading and download, including Improving Industrial Control Systems
Cybersecurity with Defense-in-Depth Strategies .
Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage on cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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