CVE-2021-40563 Null dereference in n/a
A null pointer dereference in GPAC's mp4box tool allows attackers to cause a denial of service via crafted media files.
- 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
- Available
What is CVE-2021-40563?
CVE-2021-40563 is a medium-severity vulnerability in Gpac Gpac, published on 12 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
A Segmentation fault exists casued by null pointer dereference exists in Gpac through 1.0.1 via the naludmx_create_avc_decoder_config function in reframe_nalu.c when using mp4box, which causes a denial of service.
Weakness: CWE-476
Which versions are affected by CVE-2021-40563?
It affects 1 product.
Products include Gpac Gpac.
How do I fix CVE-2021-40563?
Upgrade to a fixed version.
Is CVE-2021-40563 being exploited?
There is no known exploitation of CVE-2021-40563 in the wild and no public exploit code.
Other vulnerabilities in Gpac Gpac
Sources
Also known as DEBIAN-CVE-2021-40563, GHSA-p8v4-4j5f-rg8w, UBUNTU-CVE-2021-40563.