About the security content of tvOS 14.3

This document describes the security content of tvOS 14.3.

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.

tvOS 14.3

Audio

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted audio file may disclose restricted memory

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

CVE-2020-29610: Anonymous working with Trend Micro Zero Day Initiative

CoreAudio

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2020-27948: JunDong Xie of Ant Security Light-Year Lab

FontParser

Available for: Apple TV 4K and Apple TV HD

Impact: A remote attacker may be able to leak memory

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

CVE-2020-29608: Xingwei Lin of Ant Security Light-Year Lab

FontParser

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted font may result in the disclosure of process memory

Description: An information disclosure issue was addressed with improved state management.

CVE-2020-27946: Mateusz Jurczyk of Google Project Zero

FontParser

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2020-27943: Mateusz Jurczyk of Google Project Zero

CVE-2020-27944: Mateusz Jurczyk of Google Project Zero

CVE-2020-29624: Mateusz Jurczyk of Google Project Zero

ImageIO

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted image may lead to a denial of service

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

CVE-2020-29615: Xingwei Lin of Ant Security Light-Year Lab

ImageIO

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2020-29617: Xingwei Lin of Ant Security Light-Year Lab

CVE-2020-29619: Xingwei Lin of Ant Security Light-Year Lab

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-2020-29618: Xingwei Lin of Ant Security Light-Year Lab

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 write issue was addressed with improved bounds checking.

CVE-2020-29611: Alexandru-Vlad Niculae working with Google Project Zero

Model I/O

Available for: Apple TV 4K and Apple TV HD

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

Description: This issue was addressed with improved checks.

CVE-2020-29614: ZhiWei Sun(@5n1p3r0010) of Topsec Alpha Lab

Model I/O

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution

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

CVE-2020-9972: Aleksandar Nikolic of Cisco Talos

WebKit Storage

Available for: Apple TV 4K and Apple TV HD

Impact: A user may be unable to fully delete browsing history

Description: "Clear History and Website Data" did not clear the history. The issue was addressed with improved data deletion.

CVE-2020-29623: Simon Hunt of OvalTwo LTD

WebRTC

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.

CVE-2020-15969: an anonymous researcher

Wi-Fi

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 size validation.

CVE-2021-31077: Lee of CompSec@SNU

Additional recognition

CoreAudio

We would like to acknowledge JunDong Xie and Xingwei Lin of Ant Security Light-Year Lab for their assistance.