PT-2021-18851 · Apple · Security Update+2

3Ndy1 + 2 · Published 2021-07-21 · Updated 2021-09-16 · CVE-2021-30765

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 The issue involves an out-of-bounds write that has been addressed through improved input validation. This allows an application to potentially 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-2021-30765

Affected Products

Apple Macos

Security Update

Macos Big Sur

References · 7

• https://support.apple.com/en-us/HT212603 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30765 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30765 · Vendor Advisory
• https://support.apple.com/en-us/HT212602 · Vendor Advisory
• https://support.apple.com/en-us/HT212600 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30765 · Note
• https://support.apple.com/en-us/102849 · Note