CVE-2021-1784 Privilege escalation in macOS

What is CVE-2021-1784?

CVE-2021-1784 is a high-severity vulnerability in Apple Mac Os X, published on 8 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.

Which versions are affected by CVE-2021-1784?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-1784?

No fix has been published for CVE-2021-1784 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-1784 being exploited?

There is no known exploitation of CVE-2021-1784 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-mh4j-qch9-f5wf.