About the security content of tvOS 11.2.5

This document describes the security content of tvOS 11.2.5.

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.

For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.

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

tvOS 11.2.5

Audio

Available for: Apple TV 4K and Apple TV (4th generation)

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

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

CVE-2018-4094: Mingi Cho, Seoyoung Kim, Young-Ho Lee, MinSik Shin and Taekyoung Kwon of the Information Security Lab, Yonsei University

Core Bluetooth

Available for: Apple TV 4K and Apple TV (4th generation)

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

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

CVE-2018-4087: Rani Idan (@raniXCH) of Zimperium zLabs Team

CVE-2018-4095: Rani Idan (@raniXCH) of Zimperium zLabs Team

Graphics Driver

Available for: Apple TV 4K and Apple TV (4th generation)

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-2018-4109: Adam Donenfeld (@doadam) of the Zimperium zLabs Team

Kernel

Available for: Apple TV 4K and Apple TV (4th generation)

Impact: An application may be able to read restricted memory

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

CVE-2018-4090: Jann Horn of Google Project Zero

Kernel

Available for: Apple TV 4K and Apple TV (4th generation)

Impact: An application may be able to read restricted memory

Description: A race condition was addressed with improved locking.

CVE-2018-4092: Stefan Esser of Antid0te UG

Kernel

Available for: Apple TV 4K and Apple TV (4th generation)

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-2018-4082: Russ Cox of Google

Kernel

Available for: Apple TV 4K and Apple TV (4th generation)

Impact: An application may be able to read restricted memory

Description: A validation issue was addressed with improved input sanitization.

CVE-2018-4093: Jann Horn of Google Project Zero

Kernel

Available for: Apple TV 4K and Apple TV (4th generation)

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-2018-4189: an anonymous researcher

QuartzCore

Available for: Apple TV 4K and Apple TV (4th generation)

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

Description: A memory corruption issue existed in the processing of web content. This issue was addressed with improved input validation.

CVE-2018-4085: Ret2 Systems Inc. working with Trend Micro's Zero Day Initiative

Security

Available for: Apple TV 4K and Apple TV (4th generation)

Impact: A certificate may have name constraints applied incorrectly

Description: A certificate evaluation issue existed in the handling of name constraints. This issue was addressed with improved trust evaluation of certificates.

CVE-2018-4086: Ian Haken of Netflix

WebKit

Available for: Apple TV 4K and Apple TV (4th generation)

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

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2018-4088: Jeonghoon Shin of Theori

CVE-2018-4089: Ivan Fratric of Google Project Zero

CVE-2018-4096: found by OSS-Fuzz

WebKit

Available for: Apple TV 4K and Apple TV (4th generation)

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

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2018-4147: found by OSS-Fuzz

WebKit Page Loading

Available for: Apple TV 4K and Apple TV (4th generation)

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

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2017-7830: Jun Kokatsu (@shhnjk)