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APPLE-SA-2019-3-25-3 tvOS 12.2

tvOS 12.2 is now available and addresses the following:

CFString
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing a maliciously crafted string may lead to a denial
of service
Description: A validation issue was addressed with improved logic.
CVE-2019-8516: SWIPS Team of Frifee Inc.

configd
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to elevate privileges
Description: A memory initialization issue was addressed with
improved memory handling.
CVE-2019-8552: Mohamed Ghannam (@_simo36)

CoreCrypto
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to elevate privileges
Description: A buffer overflow was addressed with improved bounds
checking.
CVE-2019-8542: an anonymous researcher

file
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing a maliciously crafted file might disclose user
information
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2019-6237: an anonymous researcher

Foundation
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: An application may be able to gain elevated privileges
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2019-7286: an anonymous researcher, Clement Lecigne of Google
Threat Analysis Group, Ian Beer of Google Project Zero, and Samuel
Groß of Google Project Zero

GeoServices
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Clicking a malicious SMS link may lead to arbitrary code
execution
Description: A memory corruption issue was addressed with improved
validation.
CVE-2019-8553: an anonymous researcher

iAP
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to elevate privileges
Description: A buffer overflow was addressed with improved bounds
checking.
CVE-2019-8542: an anonymous researcher

IOHIDFamily
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A local user may be able to cause unexpected system
termination or read kernel memory
Description: A memory corruption issue was addressed with improved
state management.
CVE-2019-8545: Adam Donenfeld (@doadam) of the Zimperium zLabs Team

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A remote attacker may be able to cause unexpected system
termination or corrupt kernel memory
Description: A buffer overflow was addressed with improved size
validation.
CVE-2019-8527: Ned Williamson of Google and derrek (@derrekr6)

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to determine kernel
memory layout
Description: A memory initialization issue was addressed with
improved memory handling.
CVE-2019-8540: Weibo Wang (@ma1fan) of Qihoo 360  Nirvan Team

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: An application may be able to gain elevated privileges
Description: A logic issue was addressed with improved state
management.
CVE-2019-8514: Samuel Groß of Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A local user may be able to read kernel memory
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2019-7293: Ned Williamson of Google

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to determine kernel
memory layout
Description: An out-of-bounds read issue existed that led to the
disclosure of kernel memory. This was addressed with improved input
validation.
CVE-2019-6207: Weibo Wang of Qihoo 360 Nirvan Team (@ma1fan)
CVE-2019-8510: Stefan Esser of Antid0te UG

Power Management
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to execute arbitrary code
with system privileges
Description: Multiple input validation issues existed in MIG
generated code. These issues were addressed with improved validation.
CVE-2019-8549: Mohamed Ghannam (@_simo36) of SSD Secure Disclosure
(ssd-disclosure.com)

Siri
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to initiate a Dictation
request without user authorization
Description: An API issue existed in the handling of dictation
requests. This issue was addressed with improved validation.
CVE-2019-8502: Luke Deshotels of North Carolina State University,
Jordan Beichler of North Carolina State University, William Enck of
North Carolina State University, Costin Carabaș of University
POLITEHNICA of Bucharest, and Răzvan Deaconescu of University
POLITEHNICA of Bucharest

TrueTypeScaler
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing a maliciously crafted font may result in the
disclosure of process memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2019-8517: riusksk of VulWar Corp working with Trend Micro Zero
Day Initiative

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing maliciously crafted web content may lead to
universal cross site scripting
Description: A logic issue was addressed with improved validation.
CVE-2019-8551: Ryan Pickren (ryanpickren.com)

WebKit
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 was addressed with improved
state management.
CVE-2019-8535: Zhiyang Zeng (@Wester) of Tencent Blade Team

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-2019-6201: dwfault working with ADLab of Venustech
CVE-2019-8518: Samuel Groß of Google Project Zero
CVE-2019-8523: Apple
CVE-2019-8524: G. Geshev working with Trend Micro Zero Day Initiative
CVE-2019-8558: Samuel Groß of Google Project Zero
CVE-2019-8559: Apple
CVE-2019-8563: Apple

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A sandboxed process may be able to circumvent sandbox
restrictions
Description: A memory corruption issue was addressed with improved
validation.
CVE-2019-8562: Wen Xu of SSLab at Georgia Tech and Hanqing Zhao of
Chaitin Security Research Lab

WebKit
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 was addressed with improved
memory handling.
CVE-2019-8536: Apple
CVE-2019-8544: an anonymous researcher

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing maliciously crafted web content may disclose
sensitive user information
Description: A cross-origin issue existed with the fetch API. This
was addressed with improved input validation.
CVE-2019-8515: James Lee (@Windowsrcer)

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
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-2019-7285: dwfault working at ADLab of Venustech
CVE-2019-8556: Apple

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2019-8506: Samuel Groß of Google Project Zero

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious website may be able to execute scripts in the
context of another website
Description: A logic issue was addressed with improved validation.
CVE-2019-8503: Linus Särud of Detectify

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing maliciously crafted web content may result in the
disclosure of process memory
Description: A validation issue was addressed with improved logic.
CVE-2019-7292: Zhunki and Zhiyi Zhang of 360 ESG Codesafe Team

XPC
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious application may be able to overwrite arbitrary
files
Description: This issue was addressed with improved checks.
CVE-2019-8530: CodeColorist of Ant-Financial LightYear Labs

Additional recognition

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

Safari
We would like to acknowledge Nikhil Mittal (@c0d3G33k) of Payatu Labs
(payatu.com) for their assistance.

WebKit
We would like to acknowledge Andrey Kovalev of Yandex Security Team
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."

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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