About the security content of tvOS 13

This document describes the security content of tvOS 13.

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 13

Released September 24, 2019

AppleFirmwareUpdateKext

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 vulnerability was addressed with improved locking.

CVE-2019-8747: Mohamed Ghannam (@_simo36)

Entry added October 29, 2019

Audio

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2019-8706: Yu Zhou of Ant-financial Light-Year Security Lab

Entry added October 29, 2019

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-2019-8850: Anonymous working with Trend Micro Zero Day Initiative

Entry added December 4, 2019

CFNetwork

Available for: Apple TV 4K and Apple TV HD

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

Description: This issue was addressed with improved checks.

CVE-2019-8753: Łukasz Pilorz of Standard Chartered GBS Poland

Entry added October 29, 2019

CoreAudio

Available for: Apple TV 4K and Apple TV HD

Impact: Playing a malicious audio file may lead to arbitrary code execution

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

CVE-2019-8592: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative

Entry added November 6, 2019

CoreCrypto

Available for: Apple TV 4K and Apple TV HD

Impact: Processing a large input may lead to a denial of service

Description: A denial of service issue was addressed with improved input validation.

CVE-2019-8741: Nicky Mouha of NIST

Entry added October 29, 2019

CoreAudio

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2019-8705: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative

Entry added October 8, 2019

Foundation

Available for: Apple TV 4K and Apple TV HD

Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution

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

CVE-2019-8746: Natalie Silvanovich and Samuel Groß of Google Project Zero

Entry added October 29, 2019

IOUSBDeviceFamily

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-2019-8718: Joshua Hill and Sem Voigtländer

Entry added October 29, 2019

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 vulnerability was addressed with improved locking.

CVE-2019-8740: Mohamed Ghannam (@_simo36)

Entry added October 29, 2019

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: A local app may be able to read a persistent account identifier

Description: A validation issue was addressed with improved logic.

CVE-2019-8809: Apple

Entry added October 29, 2019

Kernel

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-2019-8712: Mohamed Ghannam (@_simo36)

Entry added October 29, 2019

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to determine kernel memory layout

Description: A memory corruption issue existed in the handling of IPv6 packets. This issue was addressed with improved memory management.

CVE-2019-8744: Zhuo Liang of Qihoo 360 Vulcan Team

Entry added October 29, 2019

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 state management.

CVE-2019-8709: derrek (@derrekr6) derrek (@derrekr6)

Entry added October 29, 2019

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-2019-8717: Jann Horn of Google Project Zero

Entry added October 8, 2019

Kernel

Available for: Apple TV 4K and Apple TV HD

Impact: A malicious application may be able to determine kernel memory layout

Description: The issue was addressed with improved permissions logic.

CVE-2019-8780: Siguza

Entry added October 8, 2019

Keyboards

Available for: Apple TV 4K and Apple TV HD

Impact: A local user may be able to leak sensitive user information

Description: An authentication issue was addressed with improved state management.

CVE-2019-8704: 王 邦 宇 (wAnyBug.Com) of SAINTSEC

libxml2

Available for: Apple TV 4K and Apple TV HD

Impact: Multiple issues in libxml2

Description: Multiple memory corruption issues were addressed with improved input validation.

CVE-2019-8749: found by OSS-Fuzz

CVE-2019-8756: found by OSS-Fuzz

Entry added October 8, 2019

libxslt

Available for: Apple TV 4K and Apple TV HD

Impact: Multiple issues in libxslt

Description: Multiple memory corruption issues were addressed with improved input validation.

CVE-2019-8750: found by OSS-Fuzz

Entry added October 29, 2019

mDNSResponder

Available for: Apple TV 4K and Apple TV HD

Impact: An attacker in physical proximity may be able to passively observe device names in AWDL communications

Description: This issue was resolved by replacing device names with a random identifier.

CVE-2019-8799: David Kreitschmann and Milan Stute of Secure Mobile Networking Lab at Technische Universität Darmstadt

Entry added October 29, 2019

UIFoundation

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2019-8745: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative

Entry added October 8, 2019

UIFoundation

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-2019-8831: riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative

Entry added November 18, 2019

WebKit

Available for: Apple TV 4K and Apple TV HD

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

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

CVE-2019-8625: Sergei Glazunov of Google Project Zero

CVE-2019-8719: Sergei Glazunov of Google Project Zero

CVE-2019-8764: Sergei Glazunov of Google Project Zero

Entry added October 8, 2019, updated October 29, 2019

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-2019-8707: an anonymous researcher working with Trend Micro's Zero Day Initiative, cc working with Trend Micro Zero Day Initiative

CVE-2019-8710: found by OSS-Fuzz

CVE-2019-8726: Jihui Lu of Tencent KeenLab

CVE-2019-8728: Junho Jang of LINE Security Team and Hanul Choi of ABLY Corporation

CVE-2019-8733: Sergei Glazunov of Google Project Zero

CVE-2019-8734: found by OSS-Fuzz

CVE-2019-8735: G. Geshev working with Trend Micro Zero Day Initiative

CVE-2019-8743: zhunki from Codesafe Team of Legendsec at Qi'anxin Group

CVE-2019-8751: Dongzhuo Zhao working with ADLab of Venustech

CVE-2019-8752: Dongzhuo Zhao working with ADLab of Venustech

CVE-2019-8763: Sergei Glazunov of Google Project Zero

CVE-2019-8765: Samuel Groß of Google Project Zero

CVE-2019-8766: found by OSS-Fuzz

CVE-2019-8773: found by OSS-Fuzz

Entry added October 8, 2019, updated October 29, 2019

WebKit

Available for: Apple TV 4K and Apple TV HD

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

Description: A validation issue was addressed with improved logic.

CVE-2019-8762: Sergei Glazunov of Google Project Zero

Entry added November 18, 2019

Wi-Fi

Available for: Apple TV 4K and Apple TV HD

Impact: A device may be passively tracked by its WiFi MAC address

Description: A user privacy issue was addressed by removing the broadcast MAC address.

CVE-2019-8854: Ta-Lun Yen of UCCU Hacker and FuriousMacTeam of the United States Naval Academy and the Mitre Cooperation

Entry added December 4, 2019

Additional recognition

Audio

We would like to acknowledge riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative for their assistance.

Entry added October 29, 2019

HomeKit

We would like to acknowledge Tian Zhang for their assistance.

Entry added October 29, 2019

Kernel

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

Entry added October 29, 2019

boringssl

We would like to acknowledge Nimrod Aviram of Tel Aviv University, Robert Merget of Ruhr University Bochum, Juraj Somorovsky of Ruhr University Bochum, Thijs Alkemade (@xnyhps) of Computest for their assistance.

Entry added October 8, 2019, updated October 29, 2019

Keyboard

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

mDNSResponder

We would like to acknowledge Gregor Lang of e.solutions GmbH for their assistance.

Entry added October 29, 2019

Profiles

We would like to acknowledge Erik Johnson of Vernon Hills High School, James Seeley (@Code4iOS) of Shriver Job Corps, James Seeley (@Code4iOS) of Shriver Job Corps for their assistance.

Entry updated October 29, 2019

WebKit

We would like to acknowledge MinJeong Kim of Information Security Lab, Chungnam National University, JaeCheol Ryou of the Information Security Lab, Chungnam National University in South Korea, Yiğit Can YILMAZ (@yilmazcanyigit), Zhihua Yao of DBAPPSecurity Zion Lab, an anonymous researcher, cc working with Trend Micro's Zero Day Initiative for their assistance.

Entry added October 8, 2019, updated October 29, 2019

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