About the security content of macOS Big Sur 11.7.7

This document describes the security content of macOS Big Sur 11.7.7.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.

Apple security documents reference vulnerabilities by CVE-ID when possible.

For more information about security, see the Apple Product Security page.

macOS Big Sur 11.7.7

Released May 18, 2023

Accessibility

Available for: macOS Big Sur

Impact: An app may be able to bypass Privacy preferences

Description: A privacy issue was addressed with improved private data redaction for log entries.

CVE-2023-32388: Kirin (@Pwnrin)

AppleEvents

Available for: macOS Big Sur

Impact: An app may be able to bypass Privacy preferences

Description: This issue was addressed with improved redaction of sensitive information.

CVE-2023-28191: Mickey Jin (@patch1t)

AppleMobileFileIntegrity

Available for: macOS Big Sur

Impact: An app may be able to bypass Privacy preferences

Description: This issue was addressed with improved entitlements.

CVE-2023-32411: Mickey Jin (@patch1t)

AppleMobileFileIntegrity

Available for: macOS Big Sur

Impact: An app may be able to inject code into sensitive binaries bundled with Xcode

Description: This issue was addressed by forcing hardened runtime on the affected binaries at the system level.

CVE-2023-32383: James Duffy (mangoSecure)

Entry added December 21, 2023

Contacts

Available for: macOS Big Sur

Impact: An app may be able to observe unprotected user data

Description: A privacy issue was addressed with improved handling of temporary files.

CVE-2023-32386: Kirin (@Pwnrin)

CoreCapture

Available for: macOS Big Sur

Impact: An app may be able to execute arbitrary code with kernel privileges

Description: The issue was addressed with improved memory handling.

CVE-2023-28181: Tingting Yin of Tsinghua University

CUPS

Available for: macOS Big Sur

Impact: An unauthenticated user may be able to access recently printed documents

Description: An authentication issue was addressed with improved state management.

CVE-2023-32360: Gerhard Muth

dcerpc

Available for: macOS Big Sur

Impact: A remote attacker may be able to cause unexpected app termination or arbitrary code execution

Description: A use-after-free issue was addressed with improved memory management.

CVE-2023-32387: Dimitrios Tatsis of Cisco Talos

Dev Tools

Available for: macOS Big Sur

Impact: A sandboxed app may be able to collect system logs

Description: This issue was addressed with improved entitlements.

CVE-2023-27945: Mickey Jin (@patch1t)

GeoServices

Available for: macOS Big Sur

Impact: An app may be able to read sensitive location information

Description: A privacy issue was addressed with improved private data redaction for log entries.

CVE-2023-32392: Adam M.

Entry updated December 21, 2023

ImageIO

Available for: macOS Big Sur

Impact: Processing an image may lead to arbitrary code execution

Description: A buffer overflow was addressed with improved bounds checking.

CVE-2023-32384: Meysam Firouzi @R00tkitsmm working with Trend Micro Zero Day Initiative

IOSurface

Available for: macOS Big Sur

Impact: An app may be able to leak sensitive kernel state

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2023-32410: hou xuewei (@p1ay8y3ar) vmk msu

Kernel

Available for: macOS Big Sur

Impact: An app may be able to gain root privileges

Description: A race condition was addressed with improved state handling.

CVE-2023-32413: Eloi Benoist-Vanderbeken (@elvanderb) from Synacktiv (@Synacktiv) working with Trend Micro Zero Day Initiative

Kernel

Available for: macOS Big Sur

Impact: An app may be able to execute arbitrary code with kernel privileges

Description: A use-after-free issue was addressed with improved memory management.

CVE-2023-32398: Adam Doupé of ASU SEFCOM

LaunchServices

Available for: macOS Big Sur

Impact: An app may bypass Gatekeeper checks

Description: A logic issue was addressed with improved checks.

CVE-2023-32352: Wojciech Reguła (@_r3ggi) of SecuRing (wojciechregula.blog)

libxpc

Available for: macOS Big Sur

Impact: An app may be able to modify protected parts of the file system

Description: A logic issue was addressed with improved state management.

CVE-2023-32369: Jonathan Bar Or of Microsoft, Anurag Bohra of Microsoft, and Michael Pearse of Microsoft

libxpc

Available for: macOS Big Sur

Impact: An app may be able to gain root privileges

Description: A logic issue was addressed with improved checks.

CVE-2023-32405: Thijs Alkemade (@xnyhps) from Computest Sector 7

Metal

Available for: macOS Big Sur

Impact: An app may be able to bypass Privacy preferences

Description: A logic issue was addressed with improved state management.

CVE-2023-32407: Gergely Kalman (@gergely_kalman)

Model I/O

Available for: macOS Big Sur

Impact: Processing a 3D model may lead to arbitrary code execution

Description: An out-of-bounds write issue was addressed with improved bounds checking.

CVE-2023-32380: Mickey Jin (@patch1t)

Model I/O

Available for: macOS Big Sur

Impact: Processing a 3D model may result in disclosure of process memory

Description: An out-of-bounds read was addressed with improved input validation.

CVE-2023-32382: Mickey Jin (@patch1t)

NetworkExtension

Available for: macOS Big Sur

Impact: An app may be able to read sensitive location information

Description: This issue was addressed with improved redaction of sensitive information.

CVE-2023-32403: Adam M.

Entry updated December 21, 2023

PackageKit

Available for: macOS Big Sur

Impact: An app may be able to modify protected parts of the file system

Description: A logic issue was addressed with improved state management.

CVE-2023-32355: Mickey Jin (@patch1t)

Perl

Available for: macOS Big Sur

Impact: An app may be able to modify protected parts of the file system

Description: A logic issue was addressed with improved state management.

CVE-2023-32395: Arsenii Kostromin (0x3c3e)

Quick Look

Available for: macOS Big Sur

Impact: Parsing an office document may lead to an unexpected app termination or arbitrary code execution

Description: A buffer overflow was addressed with improved bounds checking.

CVE-2023-32401: Holger Fuhrmannek of Deutsche Telekom Security GmbH on behalf of BSI (German Federal Office for Information Security)

Entry added December 21, 2023

Sandbox

Available for: macOS Big Sur

Impact: An app may be able to retain access to system configuration files even after its permission is revoked

Description: An authorization issue was addressed with improved state management.

CVE-2023-32357: Yiğit Can YILMAZ (@yilmazcanyigit), Jeff Johnson, Koh M. Nakagawa of FFRI Security, Inc., Kirin (@Pwnrin), and Csaba Fitzl (@theevilbit) of Offensive Security

Shell

Available for: macOS Big Sur

Impact: An app may be able to modify protected parts of the file system

Description: A logic issue was addressed with improved state management.

CVE-2023-32397: Arsenii Kostromin (0x3c3e)

Telephony

Available for: macOS Big Sur

Impact: A remote attacker may be able to cause unexpected app termination or arbitrary code execution

Description: A use-after-free issue was addressed with improved memory management.

CVE-2023-32412: Ivan Fratric of Google Project Zero

Additional recognition

libxml2

We would like to acknowledge OSS-Fuzz, Ned Williamson of Google Project Zero for their assistance.

Reminders

We would like to acknowledge Kirin (@Pwnrin) for their assistance.

Security

We would like to acknowledge James Duffy (mangoSecure) for their assistance.

Wi-Fi

We would like to acknowledge Adam M. for their assistance.

Entry updated December 21, 2023

Wi-Fi Connectivity

We would like to acknowledge Adam M. for their assistance.

Entry updated December 21, 2023

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