About the security content of tvOS 17.6

This document describes the security content of tvOS 17.6.

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 releases page.

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

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

tvOS 17.6

AppleMobileFileIntegrity

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: An app may be able to bypass Privacy preferences

Description: A downgrade issue was addressed with additional code-signing restrictions.

CVE-2024-40774: Mickey Jin (@patch1t)

CoreGraphics

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing a maliciously crafted file may lead to unexpected app termination

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

CVE-2024-40799: D4m0n

dyld

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication

Description: A race condition was addressed with additional validation.

CVE-2024-40815: w0wbox

Family Sharing

Available for: Apple TV HD and Apple TV 4K (all models)

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

Description: This issue was addressed with improved data protection.

CVE-2024-40795: Csaba Fitzl (@theevilbit) of Kandji

ImageIO

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing an image may lead to a denial-of-service

Description: This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org.

CVE-2023-6277

CVE-2023-52356

ImageIO

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing a maliciously crafted file may lead to unexpected app termination

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

CVE-2024-40806: Yisumi

ImageIO

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing a maliciously crafted file may lead to unexpected app termination

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

CVE-2024-40777: Junsung Lee working with Trend Micro Zero Day Initiative, and Amir Bazine and Karsten König of CrowdStrike Counter Adversary Operations

ImageIO

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing a maliciously crafted file may lead to unexpected app termination

Description: An integer overflow was addressed with improved input validation.

CVE-2024-40784: Junsung Lee working with Trend Micro Zero Day Initiative and Gandalf4a

Kernel

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: A local attacker may be able to determine kernel memory layout

Description: An information disclosure issue was addressed with improved private data redaction for log entries.

CVE-2024-27863: CertiK SkyFall Team

Kernel

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: A local attacker may be able to cause unexpected system shutdown

Description: A type confusion issue was addressed with improved memory handling.

CVE-2024-40788: Minghao Lin and Jiaxun Zhu from Zhejiang University

libxpc

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: An app may be able to bypass Privacy preferences

Description: A permissions issue was addressed with additional restrictions.

CVE-2024-40805

Sandbox

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: An app may be able to bypass Privacy preferences

Description: This issue was addressed through improved state management.

CVE-2024-40824: Wojciech Regula of SecuRing (wojciechregula.blog) and Zhongquan Li (@Guluisacat) from Dawn Security Lab of JingDong

WebKit

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

WebKit Bugzilla: 273176

CVE-2024-40776: Huang Xilin of Ant Group Light-Year Security Lab

WebKit Bugzilla: 268770

CVE-2024-40782: Maksymilian Motyl

WebKit

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

WebKit Bugzilla: 275431

CVE-2024-40779: Huang Xilin of Ant Group Light-Year Security Lab

WebKit Bugzilla: 275273

CVE-2024-40780: Huang Xilin of Ant Group Light-Year Security Lab

WebKit

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing maliciously crafted web content may lead to a cross site scripting attack

Description: This issue was addressed with improved checks.

WebKit Bugzilla: 273805

CVE-2024-40785: Johan Carlsson (joaxcar)

WebKit

Available for: Apple TV HD and Apple TV 4K (all models)

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

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

CVE-2024-40789: Seunghyun Lee (@0x10n) of KAIST Hacking Lab working with Trend Micro Zero Day Initiative