SSA-555707

Siemens Security Advisory by Siemens ProductCERT

SSA-555707: Information Disclosure Vulnerability in Simcenter STAR-CCM+

Publication Date:	2022-08-09
Last Update:	2022-08-09
Current Version:	V1.0
CVSS v3.1 Base Score:	5.3

SUMMARY

Simcenter STAR-CCM+ contains an information disclosure vulnerability when using the Power-on-Demand public license server. An attacker could access a system's host, user, and display name.

Siemens is preparing updates and recommends specific countermeasures for products where updates are not, or not yet available.

AFFECTED PRODUCTS AND SOLUTION

Affected Product and Versions	Remediation
Simcenter STAR-CCM+ All versions only if the Power-on-Demand public license server is used	Currently no fix is available See further recommendations from section Workarounds and Mitigations

WORKAROUNDS AND MITIGATIONS

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

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-CCM+
Avoid using sensitive or personal data in user, host and display names

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 STAR-CCM+ is a multiphysics computational fluid dynamics (CFD) software for the simulation of products operating under real-world conditions.

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-2022-34659

Affected applications expose user, host and display name of users, when the public license server is used. This could allow an attacker to retrieve this information.

CVSS v3.1 Base Score	5.3
CVSS Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:T/RC:C
CWE	CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

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 (2022-08-09):

Publication Date

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