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AUSCERT External Security Bulletin Redistribution
ESB-2020.3919
APPLE-SA-2020-11-05-7 tvOS 14.2
9 November 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Apple tvOS
Publisher: Apple
Operating System: Apple iOS
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Root Compromise -- Unknown/Unspecified
Increased Privileges -- Existing Account
Access Privileged Data -- Unknown/Unspecified
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27927 CVE-2020-27918 CVE-2020-27917
CVE-2020-27916 CVE-2020-27912 CVE-2020-27911
CVE-2020-27910 CVE-2020-27909 CVE-2020-27905
CVE-2020-10017 CVE-2020-10016 CVE-2020-10010
CVE-2020-10003 CVE-2020-10002 CVE-2020-9974
Reference: ESB-2020.3918
ESB-2020.3911
Original Bulletin:
https://support.apple.com/en-us/HT211930
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APPLE-SA-2020-11-05-7 tvOS 14.2
tvOS 14.2 is now available and address the following issues.
Information about the security content is also available at
https://support.apple.com/HT211930.
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 input
validation.
CVE-2020-27910: JunDong Xie and XingWei Lin of Ant Security Light-
Year 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 write was addressed with improved input
validation.
CVE-2020-27916: JunDong Xie of Ant Security Light-Year Lab
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 was addressed with improved input
validation.
CVE-2020-10017: Francis working with Trend Micro Zero Day Initiative,
JunDong Xie of Ant Security Light-Year Lab
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 read was addressed with improved input
validation.
CVE-2020-27909: Anonymous working with Trend Micro Zero Day
Initiative, JunDong Xie and XingWei Lin of Ant Security Light-Year
Lab
Crash Reporter
Available for: Apple TV 4K and Apple TV HD
Impact: A local attacker may be able to elevate their privileges
Description: An issue existed within the path validation logic for
symlinks. This issue was addressed with improved path sanitization.
CVE-2020-10003: Tim Michaud (@TimGMichaud) of Leviathan
FontParser
Available for: Apple TV 4K and Apple TV HD
Impact: Processing a maliciously crafted font file may lead to
arbitrary code execution
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2020-27927: Xingwei Lin of Ant Security Light-Year Lab
Foundation
Available for: Apple TV 4K and Apple TV HD
Impact: A local user may be able to read arbitrary files
Description: A logic issue was addressed with improved state
management.
CVE-2020-10002: James Hutchins
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 was addressed with improved input
validation.
CVE-2020-27912: Xingwei Lin of Ant Security Light-Year Lab
IOAcceleratorFamily
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 memory corruption issue was addressed with improved
state management.
CVE-2020-27905: Mohamed Ghannam (@_simo36)
Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: A malicious application may be able to determine kernel
memory layout
Description: A logic issue was addressed with improved state
management.
CVE-2020-9974: Tommy Muir (@Muirey03)
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
state management.
CVE-2020-10016: Alex Helie
libxml2
Available for: Apple TV 4K and Apple TV HD
Impact: Processing maliciously crafted web content may lead to code
execution
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-27917: found by OSS-Fuzz
libxml2
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 integer overflow was addressed through improved input
validation.
CVE-2020-27911: found by OSS-Fuzz
Logging
Available for: Apple TV 4K and Apple TV HD
Impact: A local attacker may be able to elevate their privileges
Description: A path handling issue was addressed with improved
validation.
CVE-2020-10010: Tommy Muir (@Muirey03)
WebKit
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-2020-27918: 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."
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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===========================================================================
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