-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2019-7-22-5 tvOS 12.4

tvOS 12.4 is now available and addresses the following:

Core Data
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 input
validation.
CVE-2019-8646: Natalie Silvanovich of Google Project Zero

Core Data
Available for: Apple TV 4K and Apple TV HD
Impact: A remote attacker may be able to cause arbitrary code
execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2019-8647: Samuel Groß and Natalie Silvanovich of Google Project
Zero

Core Data
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 memory corruption issue was addressed with improved
input validation.
CVE-2019-8660: Samuel Groß and Natalie Silvanovich of Google Project
Zero

FaceTime
Available for: Apple TV 4K and Apple TV HD
Impact: A remote attacker may be able to cause arbitrary code
execution
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2019-8648: Tao Huang and Tielei Wang of Team Pangu

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-2019-8641: Samuel Groß and Natalie Silvanovich of Google Project
Zero

Heimdal
Available for: Apple TV 4K and Apple TV HD
Impact: An issue existed in Samba that may allow attackers to perform
unauthorized actions by intercepting communications between services
Description: This issue was addressed with improved checks to prevent
unauthorized actions.
CVE-2018-16860: Isaac Boukris and Andrew Bartlett of the Samba Team
and Catalyst

libxslt
Available for: Apple TV 4K and Apple TV HD
Impact: A remote attacker may be able to view sensitive information
Description: A stack overflow was addressed with improved input
validation.
CVE-2019-13118: found by OSS-Fuzz

Profiles
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to restrict access to
websites
Description: A validation issue existed in the entitlement
verification. This issue was addressed with improved validation of
the process entitlement.
CVE-2019-8698: Luke Deshotels, Jordan Beichler, and William Enck of
North Carolina State University; Costin Carabaș and Răzvan
Deaconescu of University POLITEHNICA of Bucharest

Quick Look
Available for: Apple TV 4K and Apple TV HD
Impact: An attacker may be able to trigger a use-after-free in an
application deserializing an untrusted NSDictionary
Description: This issue was addressed with improved checks.
CVE-2019-8662: Natalie Silvanovich and Samuel Groß of Google Project
Zero

Siri
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 input
validation.
CVE-2019-8646: Natalie Silvanovich of Google Project Zero

UIFoundation
Available for: Apple TV 4K and Apple TV HD
Impact: Parsing a maliciously crafted office document may lead to an
unexpected application termination or arbitrary code execution
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2019-8657: riusksk of VulWar Corp working with Trend Micro's Zero
Day Initiative

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 existed in the handling of document loads.
This issue was addressed with improved state management.
CVE-2019-8690: Sergei Glazunov of Google Project Zero

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 existed in the handling of synchronous
page loads. This issue was addressed with improved state management.
CVE-2019-8649: Sergei Glazunov of Google Project Zero

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-2019-8658: akayn working with Trend Micro's Zero Day Initiative

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-2019-8644: G. Geshev working with Trend Micro's Zero Day
Initiative
CVE-2019-8666: Zongming Wang (王宗明) and Zhe Jin (金哲) from
Chengdu Security Response Center of Qihoo 360 Technology Co. Ltd.
CVE-2019-8669: akayn working with Trend Micro's Zero Day Initiative
CVE-2019-8671: Apple
CVE-2019-8672: Samuel Groß of Google Project Zero
CVE-2019-8673: Soyeon Park and Wen Xu of SSLab at Georgia Tech
CVE-2019-8676: Soyeon Park and Wen Xu of SSLab at Georgia Tech
CVE-2019-8677: Jihui Lu of Tencent KeenLab
CVE-2019-8678: an anonymous researcher, Anthony Lai (@darkfloyd1014)
of Knownsec, Ken Wong (@wwkenwong) of VXRL, Jeonghoon Shin
(@singi21a) of Theori, Johnny Yu (@straight_blast) of VX Browser
Exploitation Group, Chris Chan (@dr4g0nfl4me) of VX Browser
Exploitation Group, Phil Mok (@shadyhamsters) of VX Browser
Exploitation Group, Alan Ho (@alan_h0) of Knownsec, Byron Wai of VX
Browser Exploitation
CVE-2019-8679: Jihui Lu of Tencent KeenLab
CVE-2019-8680: Jihui Lu of Tencent KeenLab
CVE-2019-8681: G. Geshev working with Trend Micro Zero Day Initiative
CVE-2019-8683: lokihardt of Google Project Zero
CVE-2019-8684: lokihardt of Google Project Zero
CVE-2019-8685: akayn, Dongzhuo Zhao working with ADLab of Venustech,
Ken Wong (@wwkenwong) of VXRL, Anthony Lai (@darkfloyd1014) of VXRL,
and Eric Lung (@Khlung1) of VXRL
CVE-2019-8686: G. Geshev working with Trend Micro's Zero Day
Initiative
CVE-2019-8687: Apple
CVE-2019-8688: Insu Yun of SSLab at Georgia Tech
CVE-2019-8689: lokihardt of Google Project Zero

Additional recognition

Game Center
We would like to acknowledge Min (Spark) Zheng and Xiaolong Bai of
Alibaba Inc. for their assistance.

MobileInstallation
We would like to acknowledge Dany Lisiansky (@DanyL931) 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/
-----BEGIN PGP SIGNATURE-----
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=aULl
-----END PGP SIGNATURE-----