CVE-2019-8555 Memory corruption in macOS

High 7.8 Published 18 Dec 2019 Updated 4 Aug 2024

A malicious application can execute arbitrary code with kernel privileges due to a buffer overflow in macOS.

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: None listed

What is CVE-2019-8555?

CVE-2019-8555 is a high-severity memory corruption vulnerability in Apple Mac Os X, published on 18 Dec 2019. 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 buffer overflow was addressed with improved size validation. This issue is fixed in macOS Mojave 10.14.4. A malicious application may be able to execute arbitrary code with kernel privileges.

Weakness: CWE-119

Which versions are affected by CVE-2019-8555?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2019-8555?

No fix has been published for CVE-2019-8555 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-8555 being exploited?

There is no known exploitation of CVE-2019-8555 in the wild and no public exploit code.

All Apple Mac Os X vulnerabilities

Sources

Also known as GHSA-qc53-pf6m-hqxj.