CVE-2018-4022 Use after free in MKVToolNix
A use-after-free flaw in MKVToolNix allows arbitrary code execution via a crafted MKV file, requiring users to update the software.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-4022?
CVE-2018-4022 is a high-severity use after free vulnerability in MKVToolNix, published on 26 Oct 2018. 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 use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can cause arbitrary code execution in the context of the current user.
Weakness: CWE-416
Which versions are affected by CVE-2018-4022?
It affects 1 product.
Products include Mkvtoolnix Mkvinfo.
How do I fix CVE-2018-4022?
Upgrade to a fixed version.
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-2018-4022 being exploited?
There is no known exploitation of CVE-2018-4022 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2018-4022, GHSA-jxj9-2h46-gwf3, UBUNTU-CVE-2018-4022, openSUSE-SU-2024:11053-1.