About the security content of tvOS 13.3

This document describes the security content of tvOS 13.3.

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tvOS 13.3

Released 10 December 2019

CFNetwork

Available for: Apple TV 4K and Apple TV HD

Impact: An attacker in a privileged network position may be able to bypass HSTS for a limited number of specific top-level domains not previously in the HSTS preload list

Description: A configuration issue was addressed with additional restrictions.

CVE-2019-8834: Rob Sayre (@sayrer)

Entry added 4 April 2020

CFNetwork Proxies

Available for: Apple TV 4K and Apple TV HD

Impact: An application may be able to gain elevated privileges

Description: This issue was addressed with improved checks.

CVE-2019-8848: Zhuo Liang of Qihoo 360 Vulcan Team

FaceTime

Available for: Apple TV 4K and Apple TV HD

Impact: Processing malicious video via FaceTime may lead to arbitrary code execution

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

CVE-2019-8830: natashenka of Google Project Zero

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 by removing the vulnerable code.

CVE-2019-8833: Ian Beer of Google Project Zero

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 memory handling.

CVE-2019-8828: Cim Stordal of Cognite

CVE-2019-8838: Dr Silvio Cesare of InfoSect

libexpat

Available for: Apple TV 4K and Apple TV HD

Impact: Parsing a maliciously crafted XML file may lead to disclosure of user information

Description: This issue was addressed by updating to expat version 2.2.8.

CVE-2019-15903: Joonun Jang

libpcap

Available for: Apple TV 4K and Apple TV HD

Impact: Multiple issues in libpcap

Description: Multiple issues were addressed by updating to libpcap version 1.9.1

CVE-2019-15161

CVE-2019-15162

CVE-2019-15163

CVE-2019-15164

CVE-2019-15165

Entry added 6 April 2020

Security

Available for: Apple TV 4K and Apple TV HD

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-2019-8832: Insu Yun of SSLab at Georgia Tech

WebKit

Available for: Apple TV 4K and Apple TV HD

Impact: Visiting a maliciously crafted website may reveal sites a user has visited

Description: An information disclosure issue existed in the handling of the Storage Access API. This issue was addressed with improved logic.

CVE-2019-8898: Michael Kleber of Google

Entry added 11 February 2020, updated 20 February 2020

WebKit

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2019-8835: Anonymous working with Trend Micro's Zero Day Initiative, Mike Zhang of Pangu Team

CVE-2019-8844: William Bowling (@wcbowling)

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.

CVE-2019-8846: Marcin Towalski of Cisco Talos

Additional recognition

Core Data

We would like to acknowledge natashenka of Google Project Zero for their assistance.

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