CVE-2021-46539 Null dereference in n/a

Medium 5.5 Published 27 Jan 2022 Updated 4 Aug 2024

A segmentation fault in Cesanta MJS allows attackers to cause a denial of service via crafted input.

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-2021-46539?

CVE-2021-46539 is a medium-severity vulnerability in Cesanta Mjs, published on 27 Jan 2022. 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

Cesanta MJS v2.20.0 was discovered to contain a SEGV vulnerability via /lib/x86_64-linux-gnu/libc.so.6+0x45a1f. This vulnerability can lead to a Denial of Service (DoS).

Which versions are affected by CVE-2021-46539?

It affects 1 product.

Products include Cesanta Mjs.

How do I fix CVE-2021-46539?

No fix has been published for CVE-2021-46539 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-46539 being exploited?

There is no known exploitation of CVE-2021-46539 in the wild and no public exploit code.

All Cesanta Mjs vulnerabilities

Sources

Also known as GHSA-rqww-2fr9-72r5.