CVE-2020-9922 Path traversal in macOS

Medium 6.5 Published Updated

An attacker can write arbitrary files by sending a maliciously crafted email, potentially compromising system integrity on macOS.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2020-9922?

CVE-2020-9922 is a medium-severity path traversal vulnerability in Apple Mac Os X, published on 8 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A logic issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra. Processing a maliciously crafted email may lead to writing arbitrary files.

Which versions are affected by CVE-2020-9922?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2020-9922?

No fix has been published for CVE-2020-9922 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-2020-9922 being exploited?

There is no known exploitation of CVE-2020-9922 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Apple Mac Os X vulnerabilities

Sources

Also known as GHSA-wxpj-m284-3v3q.

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