CVE-2020-9782 Path traversal in macOS

High 7.5 Published 27 Oct 2020 Updated 4 Aug 2024

A remote attacker can overwrite existing files due to a path parsing issue in macOS, requiring a security update.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-9782?

CVE-2020-9782 is a high-severity path traversal vulnerability in Apple Mac Os X, published on 27 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra. A remote attacker may be able to overwrite existing files.

Weakness: CWE-22

Which versions are affected by CVE-2020-9782?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2020-9782?

No fix has been published for CVE-2020-9782 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-9782 being exploited?

There is no known exploitation of CVE-2020-9782 in the wild and no public exploit code.

All Apple Mac Os X vulnerabilities

Sources

Also known as GHSA-6p83-9xwf-m98p.