CVE-2021-22637 Memory corruption in Tellus Lite V-Simulator and V-Server Lite

What is CVE-2021-22637?

CVE-2021-22637 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

Multiple stack-based buffer overflow issues have 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-787, CWE-121

Which versions are affected by CVE-2021-22637?

It affects 2 products.

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

How do I fix CVE-2021-22637?

No fix has been published for CVE-2021-22637 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-2021-22637 being exploited?

There is no known exploitation of CVE-2021-22637 in the wild and no public exploit code.

Other vulnerabilities in Tellus Lite V-Simulator and V-Server Lite

• CVE-2019-18240 Memory corruption in Fuji Electric V-Server 4.0.6 and prior Critical 9.8
• CVE-2019-3947 Hardcoded credentials in Fuji Electric V-Server Critical 9.8
• CVE-2023-47584 Memory corruption in V-Server High 7.8
• CVE-2023-47585 Memory corruption in V-Server High 7.8
• CVE-2023-47586 Memory corruption in V-Server High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5crv-9pfw-2jvp.