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APPLE-SA-2017-10-31-3 tvOS 11.1

tvOS 11.1 is now available and addresses the following:

CoreText
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: Processing a maliciously crafted text file may lead to an
unexpected application termination
Description: A denial of service issue was addressed through improved
memory handling.
CVE-2017-13849: Ro of SavSec

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-2017-13799: an anonymous researcher

StreamingZip
Available for: Apple TV 4K and Apple TV (4th generation)
Impact: A malicious zip file may be able modify restricted areas of
the file system
Description: A path handling issue was addressed with improved
validation.
CVE-2017-13804: @qwertyoruiopz at KJC Research Intl. S.R.L.

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-2017-13785: Ivan Fratric of Google Project Zero
CVE-2017-13784: Ivan Fratric of Google Project Zero
CVE-2017-13783: Ivan Fratric of Google Project Zero
CVE-2017-13788: xisigr of Tencent's Xuanwu Lab (tencent.com)
CVE-2017-13798: Ivan Fratric of Google Project Zero
CVE-2017-13795: Ivan Fratric of Google Project Zero
CVE-2017-13802: Ivan Fratric of Google Project Zero
CVE-2017-13792: Ivan Fratric of Google Project Zero
CVE-2017-13794: Ivan Fratric of Google Project Zero
CVE-2017-13791: Ivan Fratric of Google Project Zero
CVE-2017-13796: Ivan Fratric of Google Project Zero
CVE-2017-13793: Hanul Choi working with Trend Micro's Zero Day
Initiative
CVE-2017-13803: chenqin (ee|) of Ant-financial Light-Year Security

Wi-Fi
Available for: Apple TV 4K
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA
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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