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APPLE-SA-2020-12-14-7 tvOS 14.3

tvOS 14.3 addresses the following issues. Information about the
security content is also available at
https://support.apple.com/HT212005.

CoreAudio
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-2020-27948: JunDong Xie of Ant Security Light-Year Lab

FontParser
Available for: Apple TV 4K and Apple TV HD
Impact: Processing a maliciously crafted font may result in the
disclosure of process memory
Description: An information disclosure issue was addressed with
improved state management.
CVE-2020-27946: Mateusz Jurczyk of Google Project Zero

FontParser
Available for: Apple TV 4K and Apple TV HD
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: A memory corruption issue existed in the processing of
font files. This issue was addressed with improved input validation.
CVE-2020-27943: Mateusz Jurczyk of Google Project Zero
CVE-2020-27944: Mateusz Jurczyk of Google Project Zero

ImageIO
Available for: Apple TV 4K and Apple TV HD
Impact: Processing a maliciously crafted image may lead to heap
corruption
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2020-29617: XingWei Lin of Ant Security Light-Year Lab
CVE-2020-29619: XingWei Lin of Ant Security Light-Year Lab

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-2020-29618: XingWei Lin of Ant Security Light-Year Lab

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-2020-29611: Ivan Fratric of Google Project Zero

WebRTC
Available for: Apple TV 4K and Apple TV HD
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-2020-15969: an anonymous researcher

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."

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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