CVE-2019-19635 Memory corruption in n/a

Critical 9.8 Published 8 Dec 2019 Updated 5 Aug 2024

A heap-based buffer overflow in libsixel allows attackers to execute arbitrary code or cause denial of service via crafted SIXEL images.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-19635?

CVE-2019-19635 is a critical memory corruption vulnerability in n/a, published on 8 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function sixel_decode_raw_impl at fromsixel.c.

Weakness: CWE-787

Which versions are affected by CVE-2019-19635?

It affects 1 product.

Products include Saitoha Libsixel.

How do I fix CVE-2019-19635?

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-2019-19635 being exploited?

There is no known exploitation of CVE-2019-19635 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-19635, GHSA-8qpr-v8hf-4323, UBUNTU-CVE-2019-19635.