Full Report
Simcenter Nastran is affected by a stack overflow vulnerability that could be triggered when an application binary reads arbitrary string as a file argument. If a user is tricked to run one of the impacted application binary with a malicious string, an attacker could leverage the vulnerability to perform remote code execution in the context of the current process. Siemens has released a new version for Simcenter Nastran 2406 and recommends to update to the latest version. Siemens recommends countermeasures for products where fixes are not, or not yet available.
Analysis Summary
# Vulnerability: Stack Overflow in Simcenter Nastran Leading to RCE
## CVE Details
- CVE ID: CVE-2024-33577
- CVSS Score: 7.8 (CVSS v3.1) / 7.3 (CVSS v4.0) (High)
- CWE: CWE-121: Stack-based Buffer Overflow
## Affected Systems
- Products: Simcenter Nastran
- Versions:
- 2306 (All versions)
- 2312 (All versions)
- 2406 (All versions prior to V2406.90)
- Configurations: Triggered when an application binary reads an arbitrary string as a file argument and the user runs the binary with this malicious string.
## Vulnerability Description
This vulnerability is a stack overflow flaw present when certain Simcenter Nastran application binaries process specially crafted strings provided as file arguments. Successful exploitation allows an attacker to execute arbitrary code within the context of the current running process.
## Exploitation
- Status: PoC available (Implied by the nature of the finding, but explicit mention of in-the-wild exploitation is absent. The requirement to trick a user suggests local interaction).
- Complexity: Low (CVSS metrics suggest Low Attack Complexity - AC:L in v3.1)
- Attack Vector: Local (CVSS v3.1 AV:L)
## Impact
- Confidentiality: High (C:H)
- Integrity: High (I:H)
- Availability: High (A:H)
## Remediation
### Patches
- Simcenter Nastran 2406: Update to version **V2406.90 or later**.
### Workarounds
- For Simcenter Nastran 2306 and 2312, Siemens currently has **no fix planned**.
- General security recommendations apply, including protecting network access to devices and configuring the environment according to Siemens' operational guidelines for Industrial Security.
## Detection
- Detection methods are not explicitly provided in the summary text, but standard application file argument monitoring or environment lockdown are implied based on the attack vector (running a binary with a malicious string).
## References
- Vendor Advisory: SSA-258494 (Siemens Security Advisory)
- Vendor Support: hXXps://support.sw.siemens.com/
- Siemens Industrial Security Portal: hXXps://www.siemens.com/industrialsecurity
- Siemens Operational Guidelines: hXXps://www.siemens.com/cert/operational-guidelines-industrial-security