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Apple Security Advisory 2020-1-28-4

Apple Security Advisory 2020-1-28-4
Posted Jan 29, 2020
Authored by Apple | Site apple.com

Apple Security Advisory 2020-1-28-4 - tvOS 13.3.1 is now available and addresses code execution vulnerabilities.

tags | advisory, vulnerability, code execution
systems | apple
advisories | CVE-2020-3829, CVE-2020-3836, CVE-2020-3837, CVE-2020-3838, CVE-2020-3840, CVE-2020-3842, CVE-2020-3853, CVE-2020-3856, CVE-2020-3857, CVE-2020-3868, CVE-2020-3870, CVE-2020-3872, CVE-2020-3875, CVE-2020-3878
MD5 | 95b45494ccda4c16df5e53cfc353126b

Apple Security Advisory 2020-1-28-4

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APPLE-SA-2020-1-28-4 tvOS 13.3.1

tvOS 13.3.1 is now available and addresses the following:

Audio
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-2020-3857: Zhuo Liang of Qihoo 360 Vulcan Team

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 read was addressed with improved input
validation.
CVE-2020-3870
CVE-2020-3878: Samuel Groß of Google Project Zero

IOAcceleratorFamily
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-2020-3837: Brandon Azad of Google Project Zero

IPSec
Available for: Apple TV 4K and Apple TV HD
Impact: Loading a maliciously crafted racoon configuration file may
lead to arbitrary code execution
Description: An off by one issue existed in the handling of racoon
configuration files. This issue was addressed through improved bounds
checking.
CVE-2020-3840: @littlelailo

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to read restricted memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2020-3875: Brandon Azad of Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to read restricted memory
Description: A memory initialization issue was addressed with
improved memory handling.
CVE-2020-3872: Haakon Garseg Mørk of Cognite and Cim Stordal of
Cognite

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to determine kernel
memory layout
Description: An access issue was addressed with improved memory
management.
CVE-2020-3836: Brandon Azad 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-2020-3842: Ned Williamson working with Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to execute arbitrary code
with system privileges
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2020-3853: Brandon Azad of Google Project Zero

libxpc
Available for: Apple TV 4K and Apple TV HD
Impact: Processing a maliciously crafted string may lead to heap
corruption
Description: A memory corruption issue was addressed with improved
input validation.
CVE-2020-3856: Ian Beer of Google Project Zero

libxpc
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to gain elevated privileges
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2020-3829: Ian Beer of Google Project Zero

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-2020-3868: Marcin Towalski of Cisco Talos

wifivelocityd
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to execute arbitrary code with
system privileges
Description: The issue was addressed with improved permissions logic.
CVE-2020-3838: Dayton Pidhirney (@_watbulb)

Additional recognition

IOSurface
We would like to acknowledge Liang Chen (@chenliang0817) 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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