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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.1048 Advisory (icsa-22-069-05) Siemens Simcenter STAR-CCM+ Viewer 11 March 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Siemens Simcenter STAR-CCM+ Viewer Publisher: ICS-CERT Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-24661 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-069-05 Comment: CVSS (Max): 7.8 CVE-2022-24661 (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-069-05) Siemens Simcenter STAR-CCM+ Viewer Original release date: March 10, 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 7.8 o ATTENTION: Low attack complexity o Vendor: Siemens o Equipment: Simcenter STAR-CCM+ Viewer o Vulnerability: Improper Restriction of Operations within the Bounds of a Memory Buffer 2. RISK EVALUATION Successful exploitation of this vulnerability could cause a crash, arbitrary code execution, or data exfiltration. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Simcenter STAR-CCM+ Viewer, a computational fluid dynamics software, are affected: o Simcenter STAR-CCM+ Viewer: All versions prior to 2022.1 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119 The starview+.exe allows a corruption vulnerability while parsing specially crafted .SCE files. This could allow an attacker to execute code in the context of the current process. CVE-2022-24661 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/ I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Jin Huang from ADLab of Venustech reported this vulnerability to Siemens. 4. MITIGATIONS Siemens has identified the following mitigations and workarounds users can apply to reduce the risk: o Update to 2022.1 or later version o Do not open untrusted scene files from unknown sources As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order 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. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/ industrialsecurity For more information see Siemens Security Advisory SSA-166747 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. This vulnerability is not exploitable remotely. 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYirXieNLKJtyKPYoAQgPgA/+PI5Fh3IMHLewyklzwVAwekKTBAV0Vbmy PHgKbpfjSdAnNtVbRj2nsNEtwnCERAqsKsyfyvOXW3VQNQvljm/2Pz5p9xFd/FV+ DW/YIDqs52MIhp+LsVQOz4ZbrQ0c1YcT3Jh/UedrcIq6bNdy98taIg/Q+ZyHTdub g0u0KhJX9Sd9V6JficindBsL72cTsahasoDvSYYsUL/e9Z0+5/qcruRiYGrVyEYS asuRKiCxmgMBaW4ngfGZNeWOEoG1qZaGSJma6puZPsFdtsDNFGsq51Bl0aujIuFv iNC4+APFdwzF+JkmgJ7ytzlcjoApLQmNamvgMY9mmt1XdWNUMsX/mUifXxPqBOyD aeC0O2Vizzw97N2qHQq1PoboRqyRCRqCJzu5P8S4VXH9uU2f9IKm+9bclAFOyKi1 91TNGXQZoYekcHFLNE8NgcW8WWyWn59J2/36139aI30B6Mjfkx6MlaXfFhMtaVWp T7S3PCB4iy/xPCDbDrNzgI0vM5GQKKlty0e7Kr3bHUj68cR0/wZwvc40xfkR4wQU c8MO472MiWhJZUv5OBnfSndHRSzkORYQnUH5ysArNkwOP48ZLkyYlteDzGs/jIDv uIRM3YWEdBydweSf+YIcITokNZDTJ0AsmL9qljVng3RbL55WQ32xfIXukq5cZaGv CVDdC7nf6QI= =RBwf -----END PGP SIGNATURE-----