PT-2021-18852 · Apple · Security Update+2

Liu Long · Published 2021-07-21 · Updated 2021-09-16 · CVE-2021-30766

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 Big Sur versions prior to 11.5 Security Update versions prior to 2021-004 Catalina Security Update versions prior to 2021-005 Mojave

Description An out-of-bounds write issue was addressed with improved input validation, which may allow an application to execute arbitrary code with kernel privileges.

Recommendations For macOS Big Sur versions prior to 11.5, update to macOS Big Sur 11.5. For Security Update versions prior to 2021-004 Catalina, apply Security Update 2021-004 Catalina. For Security Update versions prior to 2021-005 Mojave, apply Security Update 2021-005 Mojave.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-30766

Affected Products

Apple Macos

Security Update

Macos Big Sur

References · 7

• https://support.apple.com/en-us/HT212603 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30766 · Vendor Advisory
• https://support.apple.com/en-us/HT212602 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30766 · Security Note
• https://support.apple.com/en-us/HT212600 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30766 · Note
• https://support.apple.com/en-us/102849 · Note