PatchSiren cyber security CVE debrief

CVE-2024-32066 Siemens CVE debrief

CVE-2024-32066 is a high-severity out-of-bounds read vulnerability in Siemens Simcenter Femap, published on July 9, 2024. The flaw occurs when parsing specially crafted IGS (Initial Graphics Exchange Specification) files, allowing an attacker to execute arbitrary code in the context of the current process. The vulnerability was reported through the Zero Day Initiative (ZDI-CAN-21578) and affects Simcenter Femap versions prior to V2406. The CVSS 3.1 score of 7.8 reflects high impacts to confidentiality, integrity, and availability, with a local attack vector requiring user interaction through opening a malicious file. Siemens has released V2406 as a vendor fix, and CISA recommends defensive measures including avoiding untrusted IGS, BDF, and BMP files.

Vendor: Siemens
Product: Simcenter Femap
CVSS: HIGH 7.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-05-14
Original CVE updated: 2024-05-14
Advisory published: 2024-05-14
Advisory updated: 2024-05-14

Who should care

Organizations using Siemens Simcenter Femap for finite element analysis and CAD preprocessing, particularly in engineering, manufacturing, aerospace, and automotive industries. Security teams in OT/ICS environments where Simcenter Femap is deployed should prioritize patching due to the high severity and potential for code execution through a common file exchange format.

Technical summary

The vulnerability stems from improper bounds checking during parsing of IGS (Initial Graphics Exchange Specification) files in Simcenter Femap. When a specially crafted IGS file is opened, the application reads beyond the allocated buffer boundary, potentially corrupting memory and enabling arbitrary code execution within the process context. The attack requires local access and user interaction to open the malicious file, with no privileges required. The fix in V2406 addresses the parsing logic to properly validate buffer boundaries during IGS file processing.

Defensive priority

HIGH

Recommended defensive actions

Update Simcenter Femap to V2406 or later version through Siemens support portal
Implement file handling policies to prevent opening untrusted IGS, BDF, and BMP files in Simcenter Femap
Apply defense-in-depth strategies for industrial control systems environments per CISA guidance
Review and restrict file import workflows to trusted sources only
Monitor for anomalous process behavior when handling CAD file imports

Evidence notes

Vulnerability disclosed via CISA ICS advisory ICSA-24-193-04 and Siemens security advisory SSA-064222. ZDI reference ZDI-CAN-21578 indicates coordinated disclosure through Trend Micro's Zero Day Initiative.

Official resources

2024-07-09