About the security content of tvOS 15.4

This document describes the security content of tvOS 15.4.

About Apple security updates

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

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tvOS 15.4

Released March 14, 2022

Accelerate Framework

Available for: Apple TV 4K and Apple TV HD

Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

Description: A buffer overflow issue was addressed with improved memory handling.

CVE-2022-22633: ryuzaki

Entry added May 25, 2022

Accelerate Framework

Available for: Apple TV 4K and Apple TV HD

Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

Description: A memory corruption issue was addressed with improved state management.

CVE-2022-22633: ryuzaki

Entry added May 25, 2022

AppleAVD

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted image may lead to heap corruption

Description: A memory corruption issue was addressed with improved validation.

CVE-2022-22666: Marc Schoenefeld, Dr. rer. nat.

AVEVideoEncoder

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to execute arbitrary code with kernel privileges

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

CVE-2022-22634: an anonymous researcher

AVEVideoEncoder

Available for: Apple TV 4K and Apple TV HD

Impact: An application may be able to gain elevated privileges

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

CVE-2022-22635: an anonymous researcher

AVEVideoEncoder

Available for: Apple TV 4K and Apple TV HD

Impact: An 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-2022-22636: an anonymous researcher

ImageIO

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted image may lead to arbitrary code execution

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

CVE-2022-22611: Xingyu Jin of Google

ImageIO

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted image may lead to heap corruption

Description: A memory consumption issue was addressed with improved memory handling.

CVE-2022-22612: Xingyu Jin of Google

IOGPUFamily

Available for: Apple TV 4K and Apple TV HD

Impact: An application may be able to gain elevated privileges

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

CVE-2022-22641: Mohamed Ghannam (@_simo36)

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: An 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-2022-22613: Alex, an anonymous researcher

Kernel

Available for: Apple TV 4K and Apple TV HD

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-2022-22614: an anonymous researcher

CVE-2022-22615: an anonymous researcher

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to elevate privileges

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

CVE-2022-22632: Keegan Saunders

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: An attacker in a privileged position may be able to perform a denial of service attack

Description: A null pointer dereference was addressed with improved validation.

CVE-2022-22638: derrek (@derrekr6)

Kernel

Available for: Apple TV 4K and Apple TV HD

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

Description: A memory corruption issue was addressed with improved validation.

CVE-2022-22640: sqrtpwn

LLVM

Available for: Apple TV 4K and Apple TV HD

Impact: An application may be able to delete files for which it does not have permission

Description: A race condition was addressed with additional validation.

CVE-2022-21658: Florian Weimer (@fweimer)

Entry added May 25, 2022

MediaRemote

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to identify what other applications a user has installed

Description: An access issue was addressed with improved access restrictions.

CVE-2022-22670: Brandon Azad

Preferences

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to read other applications' settings

Description: The issue was addressed with additional permissions checks.

CVE-2022-22609: Mickey Jin (@patch1t), and Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com)

Entry updated June 7, 2023

Sandbox

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to bypass certain Privacy preferences

Description: The issue was addressed with improved permissions logic.

CVE-2022-22600: Sudhakar Muthumani (@sudhakarmuthu04) of Primefort Private Limited, Khiem Tran

Entry updated May 25, 2022

UIKit

Available for: Apple TV 4K and Apple TV HD

Impact: A person with physical access to an iOS device may be able to see sensitive information via keyboard suggestions

Description: This issue was addressed with improved checks.

CVE-2022-22621: Joey Hewitt

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: Processing maliciously crafted web content may disclose sensitive user information

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

WebKit Bugzilla: 232748

CVE-2022-22662: Prakash (@1lastBr3ath) of Threat Nix

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: Processing maliciously crafted web content may lead to code execution

Description: A memory corruption issue was addressed with improved state management.

WebKit Bugzilla: 232812

CVE-2022-22610: Quan Yin of Bigo Technology Live Client Team

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

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

WebKit Bugzilla: 233172

CVE-2022-22624: Kirin (@Pwnrin) of Tencent Security Xuanwu Lab

WebKit Bugzilla: 234147

CVE-2022-22628: Kirin (@Pwnrin) of Tencent Security Xuanwu Lab

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A buffer overflow issue was addressed with improved memory handling.

WebKit Bugzilla: 234966

CVE-2022-22629: Jeonghoon Shin at Theori working with Trend Micro Zero Day Initiative

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious website may cause unexpected cross-origin behavior

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

WebKit Bugzilla: 235294

CVE-2022-22637: Tom McKee of Google

Additional recognition

Bluetooth

We would like to acknowledge an anonymous researcher for their assistance.

Siri

We would like to acknowledge an anonymous researcher for their assistance

syslog

We would like to acknowledge Yonghwi Jin (@jinmo123) of Theori for their assistance.

UIKit

We would like to acknowledge Tim Shadel of Day Logger, Inc. for their assistance.

WebKit

We would like to acknowledge Abdullah Md Shaleh for their assistance.

WebKit Storage

We would like to acknowledge Martin Bajanik of FingerprintJS for their assistance.

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