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APPLE-SA-2020-07-15-3 tvOS 13.4.8

tvOS 13.4.8 is now available and addresses the following:

Audio
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-2020-9889: JunDong Xie and XingWei Li of Ant-financial Light-Year
Security Lab

Audio
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 read was addressed with improved bounds
checking.
CVE-2020-9888: JunDong Xie and XingWei Li of Ant-financial Light-Year
Security Lab
CVE-2020-9890: JunDong Xie and XingWei Li of Ant-financial Light-Year
Security Lab
CVE-2020-9891: JunDong Xie and XingWei Li of Ant-financial Light-Year
Security Lab

AVEVideoEncoder
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-2020-9907: an anonymous researcher

Crash Reporter
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to break out of its
sandbox
Description: A memory corruption issue was addressed by removing the
vulnerable code.
CVE-2020-9865: Zhuo Liang of Qihoo 360 Vulcan Team working with 360
BugCloud

GeoServices
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to read sensitive
location information
Description: An authorization issue was addressed with improved state
management.
CVE-2020-9933: Min (Spark) Zheng and Xiaolong Bai of Alibaba Inc.

iAP
Available for: Apple TV 4K and Apple TV HD
Impact: An attacker in a privileged network position may be able to
execute arbitrary code
Description: An input validation issue existed in Bluetooth. This
issue was addressed with improved input validation.
CVE-2020-9914: Andy Davis of NCC Group

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-2020-9936: Mickey Jin of Trend Micro

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An attacker in a privileged network position may be able to
inject into active connections within a VPN tunnel
Description: A routing issue was addressed with improved
restrictions.
CVE-2019-14899: William J. Tolley, Beau Kujath, and Jedidiah R.
Crandall

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An attacker that has already achieved kernel code execution
may be able to bypass kernel memory mitigations
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2020-9909: Brandon Azad of Google Project Zero

WebKit
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-2020-9894: 0011 working with Trend Micro Zero Day Initiative

WebKit
Available for: Apple TV 4K and Apple TV HD
Impact: Processing maliciously crafted web content may prevent
Content Security Policy from being enforced
Description: An access issue existed in Content Security Policy.
This issue was addressed with improved access restrictions.
CVE-2020-9915: an anonymous researcher

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-2020-9925: an anonymous researcher

WebKit
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: A use after free issue was addressed with improved
memory management.
CVE-2020-9893: 0011 working with Trend Micro Zero Day Initiative
CVE-2020-9895: Wen Xu of SSLab, Georgia Tech

WebKit
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious attacker with arbitrary read and write capability
may be able to bypass Pointer Authentication
Description: Multiple issues were addressed with improved logic.
CVE-2020-9910: Samuel Groß of Google Project Zero

WebKit Page Loading
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious attacker may be able to conceal the destination
of a URL
Description: A URL Unicode encoding issue was addressed with improved
state management.
CVE-2020-9916: Rakesh Mane (@RakeshMane10)

WebKit Web Inspector
Available for: Apple TV 4K and Apple TV HD
Impact: Copying a URL from Web Inspector may lead to command
injection
Description: A command injection issue existed in Web Inspector. This
issue was addressed with improved escaping.
CVE-2020-9862: Ophir Lojkine (@lovasoa)

Wi-Fi
Available for: Apple TV 4K and Apple TV HD
Impact: A remote attacker may be able to cause unexpected system
termination or corrupt kernel memory
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-9918: Jianjun Dai of 360 Alpha Lab working with 360 BugCloud
(bugcloud.360.cn)

Additional recognition

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

Installation note:

Apple TV will periodically check for software updates. Alternatively,
you may manually check for software updates by selecting
"Settings -> System -> Software Update -> Update Software."

To check the current version of software, select
"Settings -> General -> About."
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