CVE-2020-12284 Memory corruption in n/a
A heap-based buffer overflow in FFmpeg's JPEG parser allows attackers to execute arbitrary code or cause a denial of service via crafted files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12284?
CVE-2020-12284 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 28 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
cbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.1 and 4.2.2 has a heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check.
Weakness: CWE-787
Which versions are affected by CVE-2020-12284?
It affects 3 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Ffmpeg Ffmpeg.
How do I fix CVE-2020-12284?
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-2020-12284 being exploited?
There is no known exploitation of CVE-2020-12284 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as CLEANSTART-2024-XY41143, DEBIAN-CVE-2020-12284, GHSA-qvcx-wpfr-c8wc, JLSEC-2025-108, UBUNTU-CVE-2020-12284.