SSA-319319

Siemens Security Advisory by Siemens ProductCERT

SSA-319319: Denial of Service Vulnerability in TIA Administrator

Publication Date:	2024-06-11
Last Update:	2024-06-11
Current Version:	V1.0
CVSS v3.1 Base Score:	3.3
CVSS v4.0 Base Score:	4.8

SUMMARY

TIA Administrator creates temporary download files in a directory with insecure permissions. This could allow any authenticated attacker on Windows to disrupt the update process.

Siemens has released a new version for TIA Administrator and recommends to update to the latest version.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
TIA Administrator All versions < V3 SP2 affected by CVE-2023-38533 CVE-2023-38533	Update to V3 SP2 or later version https://support.industry.siemens.com/cs/ww/en/view/109825038/ 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:

Remove write permissions for non-administrative users on files and folders located under the installation path

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

TIA Administrator is a web-based framework that can incorporate different function modules for administrative tasks, as well as functions for managing SIMATIC software and licenses.

VULNERABILITY DESCRIPTION

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This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

Vulnerability CVE-2023-38533

The affected component creates temporary download files in a directory with insecure permissions. This could allow any authenticated attacker on Windows to disrupt the update process.

CVSS v3.1 Base Score	3.3
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:T/RC:C
CVSS v4.0 Base Score	4.8
CVSS v4.0 Vector	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE	CWE-379: Creation of Temporary File in Directory with Insecure Permissions

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 (2024-06-11):

Publication Date

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