CVE-2021-27494 Memory corruption in Datakit Software libraries embedded in Luxion KeyShot software

High 7.8 Published 27 May 2021 Updated 3 Aug 2024

A stack-based buffer overflow in KeyShot's 3D file parsing libraries allows attackers to execute arbitrary code via malicious STP files.

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-2021-27494?

CVE-2021-27494 is a high-severity memory corruption vulnerability in Datakit Software libraries embedded in Luxion KeyShot software, published on 27 May 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

Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot Versions v10.1 and prior lack proper validation of user-supplied data when parsing STP files. This could result in a stack-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of the current process.

Weakness: CWE-121

Which versions are affected by CVE-2021-27494?

It affects 4 products.

Products include Datakit Crosscadware, Luxion Keyshot, Siemens Solid Edge Se2020 Firmware, Siemens Solid Edge Se2021 Firmware.

How do I fix CVE-2021-27494?

No fix has been published for CVE-2021-27494 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-2021-27494 being exploited?

There is no known exploitation of CVE-2021-27494 in the wild and no public exploit code.

Sources

Also known as GHSA-2p45-q6vq-5r25.