CVE-2019-8661 Use after free in macOS

What is CVE-2019-8661?

CVE-2019-8661 is a critical use after free vulnerability in Apple Mac Os X, published on 18 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Mojave 10.14.6. A remote attacker may be able to cause arbitrary code execution.

Weakness: CWE-416

Which versions are affected by CVE-2019-8661?

It affects 1 product.

Products include Apple Mac Os X.

How do I fix CVE-2019-8661?

No fix has been published for CVE-2019-8661 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-8661 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-8661 exists.

Public exploit code: 1 Exploit-DB entry.

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-qp2w-5j73-m364.