PT-2021-18892 · Apple · Macos Monterey+2

Tim Michaud + 1 · Published 2021-10-25 · Updated 2021-11-02 · CVE-2021-30821

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions macOS versions prior to 12.0.1 macOS Big Sur versions prior to 11.6.1 Security Update versions prior to 2021-007 Catalina

Description A memory corruption issue was addressed with improved memory handling. This issue allows a malicious application to execute arbitrary code with kernel privileges.

Recommendations For macOS versions prior to 12.0.1, update to macOS Monterey 12.0.1. For macOS Big Sur versions prior to 11.6.1, update to macOS Big Sur 11.6.1. For Security Update versions prior to 2021-007 Catalina, apply Security Update 2021-007 Catalina.

Fix

Related Identifiers

CVE-2021-30821

Affected Products

Apple Macos

Macos Big Sur

Macos Monterey

References · 10

• https://support.apple.com/en-us/HT212869 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30821 · Vendor Advisory
• https://support.apple.com/en-us/HT212872 · Vendor Advisory
• https://support.apple.com/en-us/HT212871 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30821 · Security Note
• https://support.apple.com/en-us/103236 · Note
• https://support.apple.com/en-us/103164 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30821 · Note
• https://t.me/cibsecurity/31417 · Telegram Post
• https://t.me/cvenotify/22586 · Telegram Post