PT-2021-19018 · Apple · Apple Macos+3

Jack Dates · Published 2021-08-24 · Updated 2022-09-03 · CVE-2021-30977

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 12.1 macOS Big Sur versions prior to 11.6.2 Security Update versions prior to 2021-008 Catalina

Description A buffer overflow issue was addressed with improved bounds checking, which may allow a malicious application to execute arbitrary code with kernel privileges.

Recommendations For macOS versions prior to 12.1, update to macOS Monterey 12.1 or later. For macOS Big Sur versions prior to 11.6.2, update to macOS Big Sur 11.6.2 or later. For Security Update versions prior to 2021-008 Catalina, apply Security Update 2021-008 Catalina or later.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-30977

Affected Products

Apple Macos

Security Update

Macos Big Sur

Macos Monterey

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2021-30977 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30977 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30977 · Note
• https://t.me/cvenotify/24853 · Telegram Post
• https://support.apple.com/en-us/HT212981 · Note
• https://support.apple.com/en-us/102876 · Note
• https://support.apple.com/kb/HT213183 · Note
• https://support.apple.com/en-us/HT212978 · Note
• https://support.apple.com/en-us/102874 · Note
• https://support.apple.com/en-us/HT212979 · Note
• https://support.apple.com/en-us/HT213183 · Note
• https://support.apple.com/en-us/102882 · Note