CVE-2021-3407 Use after free in mupdf
A double free vulnerability in MuPDF allows attackers to cause memory corruption, potentially leading to code execution or 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
- Available
What is CVE-2021-3407?
CVE-2021-3407 is a high-severity use after free vulnerability in Artifex Mupdf, published on 23 Feb 2021. 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 flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.
Weakness: CWE-415
Which versions are affected by CVE-2021-3407?
It affects 3 products.
Products include Artifex Mupdf, Debian Debian Linux, Fedoraproject Fedora.
How do I fix CVE-2021-3407?
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-2021-3407 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-3407 exists.
Other vulnerabilities in Artifex Mupdf
Sources
Also known as DEBIAN-CVE-2021-3407, GHSA-5qxg-m35q-xr56, UBUNTU-CVE-2021-3407.