CVE-2021-3496 Memory corruption in jhead
A heap-based buffer overflow in jhead allows attackers to execute arbitrary code or cause denial of service via a crafted file.
- 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-2021-3496?
CVE-2021-3496 is a high-severity memory corruption vulnerability in jhead, published on 22 Apr 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 heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.
Which versions are affected by CVE-2021-3496?
It affects 1 product.
Linux distribution packages (2)
jhead SUSE:Package Hub 15 SP2 | All versions | 3.00-bp152.4.3.1 |
jhead openSUSE:Leap 15.2 | All versions | 3.00-lp152.7.3.1 |
Products include Jhead Project Jhead.
How do I fix CVE-2021-3496?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-3496 being exploited?
There is no known exploitation of CVE-2021-3496 in the wild and no public exploit code.
Other vulnerabilities in jhead
Sources
Also known as DEBIAN-CVE-2021-3496, GHSA-rvxv-5pj2-85pq, UBUNTU-CVE-2021-3496, openSUSE-SU-2021:0594-1, openSUSE-SU-2021:0620-1.