SSA-979056

Siemens Security Advisory by Siemens ProductCERT

SSA-979056: Out of Bounds Write Vulnerability in Parasolid

Publication Date:	2024-12-10
Last Update:	2024-12-12
Current Version:	V1.1
CVSS v3.1 Base Score:	7.8
CVSS v4.0 Base Score:	7.3

SUMMARY

Parasolid is affected by an out of bounds write vulnerability that could be triggered when the application is parsing X_T data or a specially crafted file in X_T format. If a user is tricked to open a malicious file with the affected applications, an attacker could leverage the vulnerability to perform remote code execution in the context of the current process.

Siemens has released new versions for the affected products and recommends to update to the latest versions.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
Parasolid V36.1 All versions < V36.1.225 affected by CVE-2024-54091	Update to V36.1.225 or later version https://support.sw.siemens.com/product/258316782/ See further recommendations from section Workarounds and Mitigations
Parasolid V37.0 All versions < V37.0.173 affected by CVE-2024-54091	Update to V37.0.173 or later version https://support.sw.siemens.com/product/258316782/ 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-2024-54091: Do not open untrusted X_T files in Parasolid or provide untrusted X_T data to Parasolid

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

Parasolid is a 3D geometric modeling tool that supports various techniques, including solid modeling, direct editing, and free-form surface/sheet modeling.

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-2024-54091

The affected application contains an out of bounds write past the end of an allocated buffer while parsing X_T data or a specially crafted file in X_T format. This could allow an attacker 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
CVSS v4.0 Base Score	7.3
CVSS v4.0 Vector	CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE	CWE-787: Out-of-bounds Write

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 (2024-12-10):	Publication Date
V1.1 (2024-12-12):	Correction: the root cause is in parsing of X_T data or files, not PAR files; Removed Parasolid V37.1 as not affected

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