About the security content of macOS Big Sur 11.6.6
This document describes the security content of macOS Big Sur 11.6.6.
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 11.6.6
Released May 16, 2022
apache
Available for: macOS Big Sur
Impact: Multiple issues in apache
Description: Multiple issues were addressed by updating apache to version 2.4.53.
CVE-2021-44224
CVE-2021-44790
CVE-2022-22719
CVE-2022-22720
CVE-2022-22721
AppKit
Available for: macOS Big Sur
Impact: A malicious application may be able to gain root privileges
Description: A logic issue was addressed with improved validation.
CVE-2022-22665: Lockheed Martin Red Team
AppleAVD
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2022-22675: an anonymous researcher
AppleEvents
Available for: macOS Big Sur
Impact: A remote attacker may be able to cause an unexpected app termination or arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
CVE-2022-22630: Jeremy Brown working with Trend Micro Zero Day Initiative
Entry added June 8, 2023
AppleGraphicsControl
Available for: macOS Big Sur
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved input validation.
CVE-2022-26751: Michael DePlante (@izobashi) of Trend Micro Zero Day Initiative
AppleScript
Available for: macOS Big Sur
Impact: Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory
Description: An out-of-bounds read issue was addressed with improved bounds checking.
CVE-2022-26698: Qi Sun of Trend Micro, Ye Zhang (@co0py_Cat) of Baidu Security
Entry updated July 6, 2022
AppleScript
Available for: macOS Big Sur
Impact: Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory
Description: An out-of-bounds read issue was addressed with improved input validation.
CVE-2022-26697: Qi Sun and Robert Ai of Trend Micro
CoreTypes
Available for: macOS Big Sur
Impact: A malicious application may bypass Gatekeeper checks
Description: This issue was addressed with improved checks to prevent unauthorized actions.
CVE-2022-22663: Arsenii Kostromin (0x3c3e)
CVMS
Available for: macOS Big Sur
Impact: A malicious application may be able to gain root privileges
Description: A memory initialization issue was addressed.
CVE-2022-26721: Yonghwi Jin (@jinmo123) of Theori
CVE-2022-26722: Yonghwi Jin (@jinmo123) of Theori
DriverKit
Available for: macOS Big Sur
Impact: A malicious application may be able to execute arbitrary code with system privileges
Description: An out-of-bounds access issue was addressed with improved bounds checking.
CVE-2022-26763: Linus Henze of Pinauten GmbH (pinauten.de)
Graphics Drivers
Available for: macOS Big Sur
Impact: A local user may be able to read kernel memory
Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.
CVE-2022-22674: an anonymous researcher
Intel Graphics Driver
Available for: macOS Big Sur
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2022-26720: Liu Long of Ant Security Light-Year Lab
Intel Graphics Driver
Available for: macOS Big Sur
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: An out-of-bounds read issue was addressed with improved input validation.
CVE-2022-26770: Liu Long of Ant Security Light-Year Lab
Intel Graphics Driver
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: An out-of-bounds write issue was addressed with improved input validation.
CVE-2022-26756: Jack Dates of RET2 Systems, Inc
Intel Graphics Driver
Available for: macOS Big Sur
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved input validation.
CVE-2022-26769: Antonio Zekic (@antoniozekic)
Intel Graphics Driver
Available for: macOS Big Sur
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: An out-of-bounds write issue was addressed with improved input validation.
CVE-2022-26748: Jeonghoon Shin of Theori working with Trend Micro Zero Day Initiative
IOMobileFrameBuffer
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved state management.
CVE-2022-26768: an anonymous researcher
Kernel
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved validation.
CVE-2022-26714: Peter Nguyễn Vũ Hoàng (@peternguyen14) of STAR Labs (@starlabs_sg)
Kernel
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A use after free issue was addressed with improved memory management.
CVE-2022-26757: Ned Williamson of Google Project Zero
LaunchServices
Available for: macOS Big Sur
Impact: An app may be able to bypass certain Privacy preferences
Description: A logic issue was addressed with improved restrictions.
CVE-2021-30946: @gorelics, and Ron Masas of BreakPoint.sh
Entry added June 8, 2023
LaunchServices
Available for: macOS Big Sur
Impact: A malicious application may be able to bypass Privacy preferences
Description: The issue was addressed with additional permissions checks.
CVE-2022-26767: Wojciech Reguła (@_r3ggi) of SecuRing
LaunchServices
Available for: macOS Big Sur
Impact: A sandboxed process may be able to circumvent sandbox restrictions
Description: An access issue was addressed with additional sandbox restrictions on third-party applications.
CVE-2022-26706: Arsenii Kostromin (0x3c3e), Jonathan Bar Or of Microsoft
Entry updated July 6, 2022
Libinfo
Available for: macOS Big Sur
Impact: An app may be able to bypass Privacy preferences
Description: This issue was addressed with improved checks.
CVE-2022-32882: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab
Entry added September 16, 2022
libresolv
Available for: macOS Big Sur
Impact: A remote user may be able to cause a denial-of-service
Description: This issue was addressed with improved checks.
CVE-2022-32790: Max Shavrick (@_mxms) of the Google Security Team
Entry added June 21, 2022
libresolv
Available for: macOS Big Sur
Impact: An attacker may be able to cause unexpected application termination or arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2022-26776: Zubair Ashraf of Crowdstrike, Max Shavrick (@_mxms) of the Google Security Team
LibreSSL
Available for: macOS Big Sur
Impact: Processing a maliciously crafted certificate may lead to a denial of service
Description: A denial of service issue was addressed with improved input validation.
CVE-2022-0778
libxml2
Available for: macOS Big Sur
Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
CVE-2022-23308
OpenSSL
Available for: macOS Big Sur
Impact: Processing a maliciously crafted certificate may lead to a denial of service
Description: This issue was addressed with improved checks.
CVE-2022-0778
PackageKit
Available for: macOS Big Sur
Impact: An app may be able to gain elevated privileges
Description: A logic issue was addressed with improved state management.
CVE-2022-32794: Mickey Jin (@patch1t)
Entry added October 4, 2022
PackageKit
Available for: macOS Big Sur
Impact: A malicious application may be able to modify protected parts of the file system
Description: This issue was addressed by removing the vulnerable code.
CVE-2022-26712: Mickey Jin (@patch1t)
Printing
Available for: macOS Big Sur
Impact: A malicious application may be able to bypass Privacy preferences
Description: This issue was addressed by removing the vulnerable code.
CVE-2022-26746: @gorelics
Safari Private Browsing
Available for: macOS Big Sur
Impact: A malicious website may be able to track users in Safari private browsing mode
Description: A logic issue was addressed with improved state management.
CVE-2022-26731: an anonymous researcher
Entry added July 6, 2022
Security
Available for: macOS Big Sur
Impact: A malicious app may be able to bypass signature validation
Description: A certificate parsing issue was addressed with improved checks.
CVE-2022-26766: Linus Henze of Pinauten GmbH (pinauten.de)
SMB
Available for: macOS Big Sur
Impact: An application may be able to gain elevated privileges
Description: An out-of-bounds read issue was addressed with improved input validation.
CVE-2022-26718: Peter Nguyễn Vũ Hoàng of STAR Labs
SMB
Available for: macOS Big Sur
Impact: Mounting a maliciously crafted Samba network share may lead to arbitrary code execution
Description: A memory corruption issue was addressed with improved input validation.
CVE-2022-26723: Felix Poulin-Belanger
SMB
Available for: macOS Big Sur
Impact: An application may be able to gain elevated privileges
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2022-26715: Peter Nguyễn Vũ Hoàng of STAR Labs
SoftwareUpdate
Available for: macOS Big Sur
Impact: A malicious application may be able to access restricted files
Description: This issue was addressed with improved entitlements.
CVE-2022-26728: Mickey Jin (@patch1t)
TCC
Available for: macOS Big Sur
Impact: An app may be able to capture a user's screen
Description: This issue was addressed with improved checks.
CVE-2022-26726: Antonio Cheong Yu Xuan of YCISCQ
Entry updated June 8, 2023
Tcl
Available for: macOS Big Sur
Impact: A malicious application may be able to break out of its sandbox
Description: This issue was addressed with improved environment sanitization.
CVE-2022-26755: Arsenii Kostromin (0x3c3e)
Vim
Available for: macOS Big Sur
Impact: Multiple issues in Vim
Description: Multiple issues were addressed by updating Vim.
CVE-2021-4136
CVE-2021-4166
CVE-2021-4173
CVE-2021-4187
CVE-2021-4192
CVE-2021-4193
CVE-2021-46059
CVE-2022-0128
WebKit
Available for: macOS Big Sur
Impact: Processing a maliciously crafted mail message may lead to running arbitrary javascript
Description: A validation issue was addressed with improved input sanitization.
CVE-2022-22589: Heige of KnownSec 404 Team (knownsec.com) and Bo Qu of Palo Alto Networks (paloaltonetworks.com)
Wi-Fi
Available for: macOS Big Sur
Impact: A malicious application may disclose restricted memory
Description: A memory corruption issue was addressed with improved validation.
CVE-2022-26745: Scarlet Raine
Entry updated July 6, 2022
Wi-Fi
Available for: macOS Big Sur
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2022-26761: Wang Yu of Cyberserval
zip
Available for: macOS Big Sur
Impact: Processing a maliciously crafted file may lead to a denial of service
Description: A denial of service issue was addressed with improved state handling.
CVE-2022-0530
zlib
Available for: macOS Big Sur
Impact: An attacker may be able to cause unexpected application termination or arbitrary code execution
Description: A memory corruption issue was addressed with improved input validation.
CVE-2018-25032: Tavis Ormandy
zsh
Available for: macOS Big Sur
Impact: A remote attacker may be able to cause arbitrary code execution
Description: This issue was addressed by updating to zsh version 5.8.1.
CVE-2021-45444
Additional recognition
Bluetooth
We would like to acknowledge Jann Horn of Project Zero for their assistance.
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