CVE-2021-46239 Use after free in n/a

Medium 5.5 Published 21 Jan 2022 Updated 4 Aug 2024

An attacker can cause a denial of service in GPAC MP4Box via an invalid free vulnerability in the allocation utility.

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-2021-46239?

CVE-2021-46239 is a medium-severity use after free vulnerability in Gpac Gpac, published on 21 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

The binary MP4Box in GPAC v1.1.0 was discovered to contain an invalid free vulnerability via the function gf_free () at utils/alloc.c. This vulnerability can lead to a Denial of Service (DoS).

Weakness: CWE-416

Which versions are affected by CVE-2021-46239?

It affects 1 product.

Products include Gpac Gpac.

How do I fix CVE-2021-46239?

No fix has been published for CVE-2021-46239 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-2021-46239 being exploited?

There is no known exploitation of CVE-2021-46239 in the wild and no public exploit code.

All Gpac Gpac vulnerabilities

Sources

Also known as DEBIAN-CVE-2021-46239, GHSA-m2jp-6q38-p4fm, UBUNTU-CVE-2021-46239.