SSA-659443

Siemens Security Advisory by Siemens ProductCERT

SSA-659443: Local Code Execution Vulnerabilities in COMOS Before V10.5

Publication Date:	2024-08-13
Last Update:	2024-08-13
Current Version:	V1.0
CVSS v3.1 Base Score:	7.8

SUMMARY

COMOS before V10.5 is affected by two local code execution vulnerabilities in the integrated Open Design Alliance Drawings SDK.

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

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
COMOS All versions < V10.5 affected by all CVEs CVE-2023-5180 CVE-2023-26495	Update to V10.5 or later version https://support.sw.siemens.com/product/222981661/ 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:

CVE-2023-5180, CVE-2023-26495: Ensure all files imported into the affected product originate from a trusted source and are transmitted over secure channels

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

COMOS is a unified data platform for collaborative plant design, operation and management that supports collecting, processing, saving, and distributing of information throughout the entire plant lifecycle.

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-2023-5180

An issue was discovered in Open Design Alliance Drawings SDK before 2024.12. A corrupted value of number of sectors used by the Fat structure in a crafted DGN file leads to an out-of-bounds write. An attacker can leverage this vulnerability to execute code in the context of the current process.

CVSS v3.1 Base Score	7.8
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE	CWE-787: Out-of-bounds Write

Vulnerability CVE-2023-26495

Open Design Alliance Drawings SDK (versions before 2024.1) contains a use-after-free vulnerability that could be triggered while parsing specially crafted DWG file. An attacker could leverage this in conjunction with other vulnerabilities to execute arbitrary code. (ZDI-CAN-19162, ZDI-CAN-19432)

CVSS v3.1 Base Score	7.8
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE	CWE-416: Use After Free

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 (2024-08-13):

Publication Date

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