CVE-2021-30829 Code injection in macOS

High 7.8 Published 19 Oct 2021 Updated 3 Aug 2024

A local attacker can execute arbitrary files due to a URI parsing flaw in macOS, requiring a security update to mitigate.

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

What is CVE-2021-30829?

CVE-2021-30829 is a high-severity code injection vulnerability in Apple Mac Os X, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A URI parsing issue was addressed with improved parsing. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to execute arbitrary files.

Which versions are affected by CVE-2021-30829?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-30829?

No fix has been published for CVE-2021-30829 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-30829 being exploited?

There is no known exploitation of CVE-2021-30829 in the wild and no public exploit code.

All Apple Mac Os X vulnerabilities

Sources

Also known as GHSA-mcpr-mf65-6f4w.