About the security content of tvOS 11.2.1

This document describes the security content of tvOS 11.2.1.

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tvOS 11.2.1

Released December 13, 2017

HomeKit

Available for: Apple TV 4K and Apple TV (4th generation)

Impact: A remote attacker may be able to unexpectedly alter application state

Description: A message handling issue was addressed with improved input validation.

CVE-2017-13903: Tian Zhang

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