SSA-629254

Siemens Security Advisory by Siemens ProductCERT

SSA-629254: Remote Code Execution Vulnerability in SIMATIC SCADA and PCS 7 systems

Publication Date:	2024-09-10
Last Update:	2024-11-12
Current Version:	V1.2
CVSS v3.1 Base Score:	9.1
CVSS v4.0 Base Score:	9.4

SUMMARY

The products listed below contain a remote code execution vulnerability that could allow an authenticated remote attacker to execute arbitrary code with high privileges.

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
SIMATIC BATCH V9.1 All versions affected by CVE-2024-35783	Update to PCS7 V9.1 SP2 UC06 or later version https://support.industry.siemens.com/cs/ww/en/view/109812242/
SIMATIC Information Server	Open for details
SIMATIC Information Server 2020 All versions affected by CVE-2024-35783	Update to PCS7 V9.1 SP2 UC06 or later version https://support.industry.siemens.com/cs/ww/en/view/109812242/
SIMATIC Information Server 2022 All versions affected by CVE-2024-35783	Currently no fix is available
SIMATIC PCS 7	Update to V9.1 SP2 UC06 or later version https://support.industry.siemens.com/cs/ww/en/view/109812242/
SIMATIC PCS 7 V9.1 All versions < V9.1 SP2 UC06 affected by CVE-2024-35783	Update to V9.1 SP2 UC06 or later version https://support.industry.siemens.com/cs/ww/en/view/109812242/
SIMATIC Process Historian	Open for details
SIMATIC Process Historian 2020 All versions affected by CVE-2024-35783	Update to PCS7 V9.1 SP2 UC06 or later version https://support.industry.siemens.com/cs/document/109812242/
SIMATIC Process Historian 2022 All versions affected by CVE-2024-35783	Currently no fix is available
SIMATIC WinCC Runtime Professional	Open for details
SIMATIC WinCC Runtime Professional V18 All versions < V18 Update 5 affected by CVE-2024-35783	Update to V18 Update 5 or later version https://support.industry.siemens.com/cs/ww/en/view/109807225/
SIMATIC WinCC Runtime Professional V19 All versions < V19 Update 3 affected by CVE-2024-35783	Update to V19 Update 3 or later version https://support.industry.siemens.com/cs/ww/en/view/109820999/
SIMATIC WinCC V7/V8	Open for details
SIMATIC WinCC V7.4 All versions affected by CVE-2024-35783	Currently no fix is planned
SIMATIC WinCC V7.5 All versions < V7.5 SP2 Update 18 affected by CVE-2024-35783	Update to V7.5 SP2 Update 18 or later version https://support.industry.siemens.com/cs/ww/en/view/109793460/
SIMATIC WinCC V8.0 All versions < V8.0 Update 5 affected by CVE-2024-35783	Update to V8.0 Update 5 or later version https://support.industry.siemens.com/cs/ww/en/view/109818723/

WORKAROUNDS AND MITIGATIONS

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

SIMATIC Information Server is used to report and visualize process data stored in the SIMATIC Process Historian.

SIMATIC Process Historian is the long term archive system for SIMATIC PCS 7, SIMATIC WinCC and SIMATIC PCS neo. It stores process values, alarms and batch data of production plants in its database and offers historical process data to reporting and visualization applications.

SIMATIC PCS 7 is a distributed control system (DCS) integrating SIMATIC WinCC, SIMATIC Batch, SIMATIC Route Control, OpenPCS 7 and other components.

SIMATIC WinCC is a supervisory control and data acquisition (SCADA) system.

SIMATIC WinCC Runtime Professional is a visualization runtime platform used for operator control and monitoring of machines and plants.

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-2024-35783

The affected products run their DB server with elevated privileges which could allow an authenticated attacker to execute arbitrary OS commands with administrative privileges.

CVSS v3.1 Base Score	9.1
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CVSS v4.0 Base Score	9.4
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE	CWE-250: Execution with Unnecessary Privileges

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

Tim Dijkman from Powerspex for reporting the vulnerability

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 (2024-09-10):	Publication Date
V1.1 (2024-10-08):	Added fix information for SIMATIC WinCC Runtime Professional V19 and updated fix information for SIMATIC PCS 7 V9.1
V1.2 (2024-11-12):	Added fix information for SIMATIC WinCC Runtime Professional V18

The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.