CVE-2019-8858 Business logic in macOS

Medium 5.3 Published 27 Oct 2020 Updated 4 Aug 2024

A logic flaw in macOS screen sharing prevents users from ending a session, causing a denial of service for the sharing user.

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-2019-8858?

CVE-2019-8858 is a medium-severity 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 logic issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006. A user who shares their screen may not be able to end screen sharing.

Which versions are affected by CVE-2019-8858?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2019-8858?

No fix has been published for CVE-2019-8858 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-8858 being exploited?

There is no known exploitation of CVE-2019-8858 in the wild and no public exploit code.

All Apple Mac Os X vulnerabilities

Sources

Also known as GHSA-2r6r-5g9f-358w.