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AUSCERT External Security Bulletin Redistribution
ESB-2019.4011
Multiple vulnerabilities have been identified in tvOS
30 October 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Apple TV
Publisher: Apple
Operating System: Apple iOS
Impact/Access: Root Compromise -- Existing Account
Execute Arbitrary Code/Commands -- Remote with User Interaction
Increased Privileges -- Existing Account
Access Privileged Data -- Existing Account
Cross-site Scripting -- Remote with User Interaction
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-8823 CVE-2019-8822 CVE-2019-8821
CVE-2019-8820 CVE-2019-8819 CVE-2019-8816
CVE-2019-8815 CVE-2019-8814 CVE-2019-8813
CVE-2019-8812 CVE-2019-8811 CVE-2019-8808
CVE-2019-8803 CVE-2019-8798 CVE-2019-8797
CVE-2019-8795 CVE-2019-8794 CVE-2019-8787
CVE-2019-8786 CVE-2019-8785 CVE-2019-8783
CVE-2019-8782
Reference: ESB-2019.4010
ESB-2019.4009
Original Bulletin:
https://support.apple.com/en-au/HT201222
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APPLE-SA-2019-10-29-3 tvOS 13.2
tvOS 13.2 is now available and addresses the following:
Accounts
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-2019-8787: Steffen Klee of Secure Mobile Networking Lab at
Technische Universität Darmstadt
App Store
Available for: Apple TV 4K and Apple TV HD
Impact: A local attacker may be able to login to the account of a
previously logged in user without valid credentials.
Description: An authentication issue was addressed with improved
state management.
CVE-2019-8803: Kiyeon An, 차민ê·\x{156} (CHA Minkyu)
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-2019-8785: Ian Beer of Google Project Zero
CVE-2019-8797: 08Tc3wBB working with SSD Secure Disclosure
AVEVideoEncoder
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-2019-8795: 08Tc3wBB working with SSD Secure Disclosure
File System Events
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-2019-8798: ABC Research s.r.o. working with Trend Micro's Zero
Day Initiative
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-2019-8794: 08Tc3wBB working with SSD Secure Disclosure
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-2019-8786: an anonymous researcher
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-2019-8813: an anonymous researcher
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-2019-8782: Cheolung Lee of LINE+ Security Team
CVE-2019-8783: Cheolung Lee of LINE+ Graylab Security Team
CVE-2019-8808: found by OSS-Fuzz
CVE-2019-8811: Soyeon Park of SSLab at Georgia Tech
CVE-2019-8812: an anonymous researcher
CVE-2019-8814: Cheolung Lee of LINE+ Security Team
CVE-2019-8816: Soyeon Park of SSLab at Georgia Tech
CVE-2019-8819: Cheolung Lee of LINE+ Security Team
CVE-2019-8820: Samuel GroÃ\x{159} of Google Project Zero
CVE-2019-8821: Sergei Glazunov of Google Project Zero
CVE-2019-8822: Sergei Glazunov of Google Project Zero
CVE-2019-8823: Sergei Glazunov of Google Project Zero
WebKit Process Model
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-2019-8815: Apple
Additional recognition
CFNetwork
We would like to acknowledge Lily Chen of Google for their
assistance.
Kernel
We would like to acknowledge Jann Horn of Google Project Zero for
their assistance.
WebKit
We would like to acknowledge Dlive of Tencent's Xuanwu Lab and Zhiyi
Zhang of Codesafe Team of Legendsec at Qi'anxin Group 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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===========================================================================
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The University of Queensland
Brisbane
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