CVE-2021-22639 Memory corruption in Tellus Lite V-Simulator and V-Server Lite

High 7.8 Published 27 Jan 2021 Updated 3 Aug 2024

An attacker can execute arbitrary code by tricking a user into opening a malicious project file in Tellus Lite V-Simulator or V-Server Lite.

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-2021-22639?

CVE-2021-22639 is a high-severity memory corruption vulnerability in Tellus Lite V-Simulator and V-Server Lite, published on 27 Jan 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

An uninitialized pointer issue has been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).

Weakness: CWE-824

Which versions are affected by CVE-2021-22639?

It affects 2 products.

Products include Fujielectric V-Server, Fujielectric V-Simulator.

How do I fix CVE-2021-22639?

No fix has been published for CVE-2021-22639 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-2021-22639 being exploited?

There is no known exploitation of CVE-2021-22639 in the wild and no public exploit code.

Sources

Also known as GHSA-6r97-fp62-rh53.