CVE-2018-4304 Denial of service in iOS, macOS, tvOS, watchOS

Medium 5.0 Published 3 Apr 2019 Updated 5 Aug 2024

An attacker can cause a denial of service on Apple devices due to insufficient input validation, requiring an OS update to mitigate.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-4304?

CVE-2018-4304 is a medium-severity denial of service vulnerability in Apple Iphone Os, published on 3 Apr 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 denial of service issue was addressed with improved validation. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

Weakness: CWE-20

Which versions are affected by CVE-2018-4304?

It affects 4 products.

Products include Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos.

How do I fix CVE-2018-4304?

No fix has been published for CVE-2018-4304 yet. Limit exposure of the affected software until one is available.

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-2018-4304 being exploited?

There is no known exploitation of CVE-2018-4304 in the wild and no public exploit code.

All Apple Iphone Os vulnerabilities

Sources

Also known as GHSA-q99v-87j5-hp4f.