CVE-2020-27844 Memory corruption in openjpeg
An out-of-bounds write in OpenJPEG allows attackers to execute arbitrary code or cause denial of service via crafted image 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-2020-27844?
CVE-2020-27844 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 Jan 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 openjpeg's src/lib/openjp2/t2.c in versions prior to 2.4.0. This flaw allows an attacker to provide crafted input to openjpeg during conversion and encoding, causing an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Weakness: CWE-20
Which versions are affected by CVE-2020-27844?
It affects 3 products.
Products include Debian Debian Linux, Oracle Outside in Technology, Uclouvain Openjpeg.
How do I fix CVE-2020-27844?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-27844 being exploited?
There is no known exploitation of CVE-2020-27844 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2020-27844, AZL-44178, GHSA-p652-vj2w-8mcw, JLSEC-2026-541, MGASA-2021-0093, UBUNTU-CVE-2020-27844.