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Date: Wed, 13 Dec 2017 14:20:10 -0800
From: Apple Product Security <product-security-noreply@...ts.apple.com>
To: security-announce@...ts.apple.com
Subject: APPLE-SA-2017-12-13-7 Additional information for APPLE-SA-2017-12-6-4
 tvOS 11.2

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

APPLE-SA-2017-12-13-7 Additional information for
APPLE-SA-2017-12-6-4 tvOS 11.2

tvOS 11.2 addresses the following:

IOSurface
Available for: Apple TV 4K and Apple TV (4th generation)
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-2017-13861: Ian Beer of Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
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-2017-13862: Apple
CVE-2017-13876: Ian Beer of Google Project Zero
CVE-2017-13867: Ian Beer of Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: An application may be able to read restricted memory
Description: An out-of-bounds read was addressed with improved bounds
checking.
CVE-2017-13833: Brandon Azad

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: An application may be able to read restricted memory
Description: A type confusion issue was addressed with improved
memory handling.
CVE-2017-13855: Jann Horn of Google Project Zero

Kernel
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: An application may be able to read restricted memory
Description: A validation issue was addressed with improved input
sanitization.
CVE-2017-13865: Ian Beer of Google Project Zero
CVE-2017-13868: Brandon Azad
CVE-2017-13869: Jann Horn of Google Project Zero

WebKit
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2017-7156: an anonymous researcher
CVE-2017-7157: an anonymous researcher
CVE-2017-13856: Jeonghoon Shin
CVE-2017-13870: an anonymous researcher
CVE-2017-13866: an anonymous researcher
Entry added December 13, 2017

Wi-Fi
Available for: Apple TV (4th generation)
Released for Apple TV 4K in tvOS 11.1.
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA
multicast/GTK clients (Key Reinstallation Attacks - KRACK)
Description: A logic issue existed in the handling of state
transitions. This was addressed with improved state management.
CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU
Leuven

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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