CVE-2024-41981 in Simcenter Nastran 2306
Summary
by MITRE • 10/08/2024
A vulnerability has been identified in Simcenter Nastran 2306 (All versions), Simcenter Nastran 2312 (All versions), Simcenter Nastran 2406 (All versions < V2406.5000). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted BDF files. This could allow an attacker to execute code in the context of the current process.
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Analysis
by VulDB Data Team • 10/11/2024
The vulnerability identified as CVE-2024-41981 affects multiple versions of Siemens Simcenter Nastran, a widely used finite element analysis software for engineering simulations. This software is critical in industries such as aerospace, automotive, and manufacturing where structural analysis and simulation play fundamental roles in product development. The affected versions include Simcenter Nastran 2306, 2312, and 2406, with the latter having a specific cutoff version of V2406.5000, indicating that earlier releases within this series remain vulnerable to the heap-based buffer overflow.
The technical flaw manifests during the parsing of BDF (Bulk Data Format) files, which are standard input files used by Nastran to define simulation parameters and model geometry. When the application processes maliciously crafted BDF files, it fails to properly validate input boundaries, leading to a heap-based buffer overflow condition. This type of vulnerability occurs when more data is written to a buffer located on the heap memory than the buffer can accommodate, causing adjacent memory to be overwritten. The heap-based nature of this overflow makes it particularly dangerous as it can corrupt heap metadata and lead to arbitrary code execution.
The operational impact of this vulnerability is severe for organizations relying on Simcenter Nastran for critical engineering workloads. An attacker who successfully exploits this vulnerability could execute arbitrary code with the privileges of the user running the Nastran application, potentially leading to complete system compromise. The vulnerability is particularly concerning because BDF files are commonly shared between engineering teams and can be easily embedded with malicious content without immediate detection. This could result in unauthorized access to sensitive design data, system infiltration, or disruption of critical engineering processes that rely on accurate simulation results.
From a cybersecurity perspective, this vulnerability aligns with CWE-121, Heap-based Buffer Overflow, and represents a classic example of improper input validation that enables code execution. The attack vector is particularly relevant to the ATT&CK framework under T1203, Exploitation for Client Execution, as it leverages the application's legitimate file processing capabilities to achieve malicious objectives. Organizations should prioritize immediate patching of affected systems, implement network segmentation to limit access to vulnerable applications, and establish strict file validation procedures for BDF file imports. Additionally, security monitoring should focus on detecting unusual file processing activities and potential exploitation attempts targeting the Nastran application. The vulnerability underscores the importance of robust input validation in engineering software, particularly in environments where third-party files are regularly processed and where the integrity of simulation data is paramount to operational safety and business continuity.