CVE-2021-30981 Memory corruption in macOS

What is CVE-2021-30981?

CVE-2021-30981 is a high-severity memory corruption vulnerability in Apple Mac Os X, published on 24 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. An application may be able to execute arbitrary code with kernel privileges.

Weakness: CWE-120

Which versions are affected by CVE-2021-30981?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-30981?

No fix has been published for CVE-2021-30981 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-30981 being exploited?

There is no known exploitation of CVE-2021-30981 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
• How this page is made