high
7.1
CWE
125
Advisory Published
Updated

CVE-2021-30876

First published: Tue Aug 24 2021(Updated: )

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.

Credit: Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown cve@mitre.org Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown

Affected SoftwareAffected VersionHow to fix
Apple Mac OS X>=10.15<=10.15.6
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-security_update_2021-004
Apple Mac OS X=10.15.7-security_update_2021-005
Apple Mac OS X=10.15.7-security_update_2021-006
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0<11.6.1
Apple macOS>=12.0<12.0.1
Apple macOS Monterey<12.0.1
12.0.1
Apple Catalina

Remedy

https://support.apple.com/en-us/HT212869

Remedy

https://support.apple.com/en-us/HT212871

Remedy

https://support.apple.com/en-us/HT212872

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this out-of-bounds read vulnerability?

    The vulnerability ID for this out-of-bounds read vulnerability is CVE-2021-30876.

  • What is the affected software for this vulnerability?

    The affected software for this vulnerability includes macOS Big Sur (up to version 11.6.1), Catalina, and macOS Monterey (up to version 12.0.1).

  • How was the out-of-bounds read vulnerability addressed?

    The out-of-bounds read vulnerability was addressed with improved bounds checking.

  • What is the severity of the CVE-2021-30876 vulnerability?

    The severity of the CVE-2021-30876 vulnerability is not specified.

  • How can I fix the CVE-2021-30876 vulnerability?

    To fix the CVE-2021-30876 vulnerability, you should update your Apple operating system to the latest version available.

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