CVE-2021-46502 Use after free in n/a

Medium 5.5 Published 27 Jan 2022 Updated 4 Aug 2024

A heap-use-after-free vulnerability in Jsish allows attackers to cause a Denial of Service.

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-2021-46502?

CVE-2021-46502 is a medium-severity use after free vulnerability in Jsish Jsish, 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

Jsish v3.5.0 was discovered to contain a heap-use-after-free via /usr/lib/x86_64-linux-gnu/libasan.so.4+0x5166d. This vulnerability can lead to a Denial of Service (DoS).

Weakness: CWE-416

Which versions are affected by CVE-2021-46502?

It affects 1 product.

Products include Jsish Jsish.

How do I fix CVE-2021-46502?

No fix has been published for CVE-2021-46502 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2021-46502 being exploited?

There is no known exploitation of CVE-2021-46502 in the wild and no public exploit code.

All Jsish Jsish vulnerabilities

Sources

Also known as GHSA-2r4c-mwv9-xcr6.