CVE-2018-19761 Denial of service in n/a

Medium 5.5 Published 30 Nov 2018 Updated 17 Sep 2024

An illegal address access in libsixel allows attackers to cause a denial of service via crafted Sixel images.

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-2018-19761?

CVE-2018-19761 is a medium-severity denial of service 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 an illegal address access at fromsixel.c (function: sixel_decode_raw_impl) in libsixel 1.8.2 that will cause a denial of service.

Weakness: CWE-125

Which versions are affected by CVE-2018-19761?

It affects 1 product.

Products include Saitoha Libsixel.

How do I fix CVE-2018-19761?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-19761 being exploited?

There is no known exploitation of CVE-2018-19761 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-19761, GHSA-7rw2-7w63-86r8, UBUNTU-CVE-2018-19761.