CVE-2021-46534 Null dereference in n/a

Medium 5.5 Published 27 Jan 2022 Updated 4 Aug 2024

A null pointer dereference 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-2021-46534?

CVE-2021-46534 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 getprop_builtin_foreign at src/mjs_exec.c. This vulnerability can lead to a Denial of Service (DoS).

Which versions are affected by CVE-2021-46534?

It affects 1 product.

Products include Cesanta Mjs.

How do I fix CVE-2021-46534?

No fix has been published for CVE-2021-46534 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-46534 being exploited?

There is no known exploitation of CVE-2021-46534 in the wild and no public exploit code.

All Cesanta Mjs vulnerabilities

Sources

Also known as GHSA-rvjh-ch4h-2q94.