CVE-2021-30877 Information disclosure in macOS

What is CVE-2021-30877?

CVE-2021-30877 is a high-severity vulnerability in Apple Mac Os X, published on 24 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.

Weakness: CWE-125

Which versions are affected by CVE-2021-30877?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-30877?

No fix has been published for CVE-2021-30877 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-30877 being exploited?

There is no known exploitation of CVE-2021-30877 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
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