CVE-2021-42024 Memory corruption in Simcenter STAR-CCM+ Viewer

Q: Is CVE-2021-42024 being exploited?

There is no known exploitation of CVE-2021-42024 in the wild and no public exploit code.

Q: How do I fix CVE-2021-42024?

No fix has been published for CVE-2021-42024 yet. Limit exposure of the affected software until one is available.

High 7.8 Published 14 Dec 2021 Updated 4 Aug 2024

An attacker can execute arbitrary code by tricking a user into opening a malicious scene file in Simcenter STAR-CCM+ Viewer.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-42024?

CVE-2021-42024 is a high-severity memory corruption vulnerability in Siemens Simcenter STAR-CCM+ Viewer, published on 14 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < 2021.3.1). The starview+.exe application lacks proper validation of user-supplied data when parsing scene files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

Weakness: CWE-787

Which versions are affected by CVE-2021-42024?

It affects 1 product.

Products include Siemens Simcenter Star-Ccm\+ Viewer.

How do I fix CVE-2021-42024?

No fix has been published for CVE-2021-42024 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-42024 being exploited?

There is no known exploitation of CVE-2021-42024 in the wild and no public exploit code.

Sources

Also known as GHSA-m55v-8766-rh84.