PT-2021-18825 · Apple · Apple Macos+1

Published 2021-05-24 · Updated 2021-09-16 · CVE-2021-30719

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions macOS versions prior to Big Sur 11.4 Security Update versions prior to 2021-003 Catalina

Description A local user may be able to cause unexpected system termination or read kernel memory due to an out-of-bounds read issue. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited. The issue was addressed by removing the vulnerable code.

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.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-30719

ZDI-21-770

Affected Products

Apple Macos

Security Update

References · 8

• https://support.apple.com/en-us/HT212530 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30719 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30719 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-770 · Security Note
• https://support.apple.com/en-us/HT212529 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30719 · Note
• https://support.apple.com/en-us/103131 · Note
• https://t.me/cibsecurity/28434 · Telegram Post