CVE-2021-1839 Privilege escalation in macOS

What is CVE-2021-1839?

CVE-2021-1839 is a high-severity vulnerability in Apple Mac Os X, published on 8 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The issue was addressed with improved permissions logic. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A local attacker may be able to elevate their privileges.

Weakness: CWE-269

Which versions are affected by CVE-2021-1839?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-1839?

No fix has been published for CVE-2021-1839 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-1839 being exploited?

There is no known exploitation of CVE-2021-1839 in the wild and no public exploit code.

Other vulnerabilities in Apple Mac Os X

• CVE-2014-7169 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2014-6271 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2012-1823 PHP-CGI Query String Parameter Exploited Critical 9.8
• CVE-2021-30713 Apple macOS Unspecified Exploited High 7.8
• CVE-2019-8526 Apple macOS Use-After-Free Exploited High 7.8

All Apple Mac Os X vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rfx5-7qrj-6p2g.