CVE-2018-19759 Memory corruption in n/a

Medium 5.5 Published 30 Nov 2018 Updated 16 Sep 2024

A heap-based buffer over-read in libsixel allows attackers to cause a 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-2018-19759?

CVE-2018-19759 is a medium-severity memory corruption vulnerability in n/a, published on 30 Nov 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

There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.

Weakness: CWE-125

Which versions are affected by CVE-2018-19759?

It affects 1 product.

Products include Saitoha Libsixel.

How do I fix CVE-2018-19759?

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-2018-19759 being exploited?

There is no known exploitation of CVE-2018-19759 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-19759, GHSA-38x5-vg2x-7hw6, UBUNTU-CVE-2018-19759.