PT-2021-18831 · Apple · Apple Macos

3Ndy1 + 1 · Published 2021-05-24 · Updated 2021-09-22 · CVE-2021-30726

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 Big Sur 11.4 Security Update versions prior to 2021-003 Catalina Security Update versions prior to 2021-004 Mojave

Description A malicious application may be able to execute arbitrary code with kernel privileges due to an out-of-bounds write issue. This issue was addressed with improved bounds checking.

Recommendations For macOS versions prior to Big Sur 11.4, update to macOS Big Sur 11.4 or later. For Security Update versions prior to 2021-003 Catalina, apply Security Update 2021-003 Catalina or later. For Security Update versions prior to 2021-004 Mojave, apply Security Update 2021-004 Mojave or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-30726

Affected Products

Apple Macos

References · 8

• https://support.apple.com/en-us/HT212530 · Vendor Advisory
• https://support.apple.com/en-us/HT212529 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30726 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30726 · Vendor Advisory
• https://support.apple.com/en-us/HT212531 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30726 · Note
• https://support.apple.com/en-us/103131 · Note
• https://t.me/cvenotify/20898 · Telegram Post