SSA-543502

Siemens Security Advisory by Siemens ProductCERT

SSA-543502: Local Privilege Escalation Vulnerability in Unicam FX

Publication Date:	2024-02-13
Last Update:	2024-02-13
Current Version:	V1.0
CVSS v3.1 Base Score:	7.8
CVSS v4.0 Base Score:	8.5

SUMMARY

Unicam FX contains a local privilege escalation vulnerability that could allow an attcker to gain SYSTEM privileges.

Unicam FX has reached end of software maintanence. Further information on recommendations for successor product can be found in section 'Additional Information'.

AFFECTED PRODUCTS AND SOLUTION

Affected Product and Versions	Remediation
Unicam FX All versions affected by all CVEs CVE-2024-22042	Currently no fix is planned

WORKAROUNDS AND MITIGATIONS

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

UniCam FX provides a solution for standardizing PCB assembly process planning, machine programming and generating process documentation and hand insert instructions.

VULNERABILITY DESCRIPTION

Un-/Collapse All

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-2024-22042

The windows installer agent used in affected product contains incorrect use of privileged APIs that trigger the Windows Console Host (conhost.exe) as a child process with SYSTEM privileges. This could be exploited by an attacker to perform a local privilege escalation attack.

CVSS v3.1 Base Score	7.8
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
CVSS v4.0 Base Score	8.5
CVSS v4.0 Vector	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE	CWE-648: Incorrect Use of Privileged APIs

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

Lockheed Martin Red Team for reporting the vulnerability

ADDITIONAL INFORMATION

Unicam FX has reached end of software maintanence. In order to receive latest security and software updates, Siemens recommends to switch to the successor product Valor Process Preparation [1].

[1] https://plm.sw.siemens.com/en-US/valor/process-preparation/

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 (2024-02-13):

Publication Date

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