About the security content of tvOS 10.2

This document describes the security content of tvOS 10.2.

About Apple security updates

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Apple security documents reference vulnerabilities by CVE-ID when possible.

tvOS 10.2

Released March 27, 2017

Audio

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2430: an anonymous researcher working with Trend Micro’s Zero Day Initiative

CVE-2017-2462: an anonymous researcher working with Trend Micro’s Zero Day Initiative

Carbon

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted .dfont file may lead to arbitrary code execution

Description: A buffer overflow existed in the handling of font files. This issue was addressed through improved bounds checking.

CVE-2017-2379: John Villamil, Doyensec, riusksk (泉哥) of Tencent Security Platform Department

CoreGraphics

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted image may lead to a denial of service

Description: An infinite recursion was addressed through improved state management.

CVE-2017-2417: riusksk (泉哥) of Tencent Security Platform Department

CoreGraphics

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved input validation.

CVE-2017-2444: Mei Wang of 360 GearTeam

CoreText

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2435: John Villamil, Doyensec

CoreText

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted font may result in the disclosure of process memory

Description: An out-of-bounds read was addressed through improved input validation.

CVE-2017-2450: John Villamil, Doyensec

CoreText

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted text message may lead to application denial of service

Description: A resource exhaustion issue was addressed through improved input validation.

CVE-2017-2461: an anonymous researcher, Isaac Archambault of IDAoADI

FontParser

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved input validation.

CVE-2017-2487: riusksk (泉哥) of Tencent Security Platform Department

CVE-2017-2406: riusksk (泉哥) of Tencent Security Platform Department

FontParser

Available for: Apple TV (4th generation)

Impact: Parsing a maliciously crafted font file may lead to an unexpected application termination or arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved input validation.

CVE-2017-2407: riusksk (泉哥) of Tencent Security Platform Department

FontParser

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted font may result in the disclosure of process memory

Description: An out-of-bounds read was addressed through improved input validation.

CVE-2017-2439: John Villamil, Doyensec

HTTPProtocol

Available for: Apple TV (4th generation)

Impact: A malicious HTTP/2 server may be able to cause undefined behavior

Description: Multiple issues existed in nghttp2 before 1.17.0. These were addressed by updating nghttp2 to version 1.17.0.

CVE-2017-2428

Entry updated March 28, 2017

ImageIO

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted image may lead to arbitrary code execution

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2416: Qidan He (何淇丹, @flanker_hqd) of KeenLab, Tencent

ImageIO

Available for: Apple TV (4th generation)

Impact: Viewing a maliciously crafted JPEG file may lead to arbitrary code execution

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2432: an anonymous researcher working with Trend Micro's Zero Day Initiative

ImageIO

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted file may lead to an unexpected application termination or arbitrary code execution

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2467

ImageIO

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted image may lead to unexpected application termination

Description: An out-of-bound read existed in LibTIFF versions before 4.0.7. This was addressed by updating LibTIFF in ImageIO to version 4.0.7.

CVE-2016-3619

JavaScriptCore

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A use after free issue was addressed through improved memory management.

CVE-2017-2491: Apple

Entry added May 2, 2017

JavaScriptCore

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted web page may lead to universal cross site scripting

Description: A prototype issue was addressed through improved logic.

CVE-2017-2492: lokihardt of Google Project Zero

Entry updated April 24, 2017

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2401: Lufeng Li of Qihoo 360 Vulcan Team

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: An integer overflow was addressed through improved input validation.

CVE-2017-2440: an anonymous researcher

Kernel

Available for: Apple TV (4th generation)

Impact: A malicious application may be able to execute arbitrary code with root privileges

Description: A race condition was addressed through improved memory handling.

CVE-2017-2456: lokihardt of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A use after free issue was addressed through improved memory management.

CVE-2017-2472: Ian Beer of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: A malicious application may be able to execute arbitrary code with kernel privileges

Description: A memory corruption issue was addressed through improved input validation.

CVE-2017-2473: Ian Beer of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: An off-by-one issue was addressed through improved bounds checking.

CVE-2017-2474: Ian Beer of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A race condition was addressed through improved locking.

CVE-2017-2478: Ian Beer of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A buffer overflow issue was addressed through improved memory handling.

CVE-2017-2482: Ian Beer of Google Project Zero

CVE-2017-2483: Ian Beer of Google Project Zero

Kernel

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with elevated privileges

Description: A memory corruption issue was addressed through improved memory handling.

CVE-2017-2490: Ian Beer of Google Project Zero, The UK's National Cyber Security Centre (NCSC)

Entry added March 31, 2017

Keyboards

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code

Description: A buffer overflow was addressed through improved bounds checking.

CVE-2017-2458: Shashank (@cyberboyIndia)

Keychain

Available for: Apple TV (4th generation)

Impact: An attacker who is able to intercept TLS connections may be able to read secrets protected by iCloud Keychain.

Description: In certain circumstances, iCloud Keychain failed to validate the authenticity of OTR packets. This issue was addressed through improved validation.

CVE-2017-2448: Alex Radocea of Longterm Security, Inc.

Entry updated March 30, 2017

libarchive

Available for: Apple TV (4th generation)

Impact: A local attacker may be able to change file system permissions on arbitrary directories

Description: A validation issue existed in the handling of symlinks. This issue was addressed through improved validation of symlinks.

CVE-2017-2390: Omer Medan of enSilo Ltd

libc++abi

Available for: Apple TV (4th generation)

Impact: Demangling a malicious C++ application may lead to arbitrary code execution

Description: A use after free issue was addressed through improved memory management.

CVE-2017-2441

libxslt

Available for: Apple TV (4th generation)

Impact: Multiple vulnerabilities in libxslt

Description: Multiple memory corruption issues were addressed through improved memory handling.

CVE-2017-5029: Holger Fuhrmannek

Entry added March 28, 2017

Security

Available for: Apple TV (4th generation)

Impact: An application may be able to execute arbitrary code with root privileges

Description: A buffer overflow was addressed through improved bounds checking.

CVE-2017-2451: Alex Radocea of Longterm Security, Inc.

Security

Available for: Apple TV (4th generation)

Impact: Processing a maliciously crafted x509 certificate may lead to arbitrary code execution

Description: A memory corruption issue existed in the parsing of certificates. This issue was addressed through improved input validation.

CVE-2017-2485: Aleksandar Nikolic of Cisco Talos

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: A prototype access issue was addressed through improved exception handling.

CVE-2017-2386: André Bargull

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved input validation.

CVE-2017-2394: Apple

CVE-2017-2396: Apple

CVE-2016-9642: Gustavo Grieco

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved memory handling.

CVE-2017-2395: Apple

CVE-2017-2454: Ivan Fratric of Google Project Zero

CVE-2017-2455: Ivan Fratric of Google Project Zero

CVE-2017-2459: Ivan Fratric of Google Project Zero

CVE-2017-2460: Ivan Fratric of Google Project Zero

CVE-2017-2464: Natalie Silvanovich of Google Project Zero, Jeonghoon Shin

CVE-2017-2465: Zheng Huang and Wei Yuan of Baidu Security Lab

CVE-2017-2466: Ivan Fratric of Google Project Zero

CVE-2017-2468: lokihardt of Google Project Zero

CVE-2017-2469: lokihardt of Google Project Zero

CVE-2017-2470: lokihardt of Google Project Zero

CVE-2017-2476: Ivan Fratric of Google Project Zero

CVE-2017-2481: 0011 working with Trend Micro's Zero Day Initiative

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A type confusion issue was addressed through improved memory handling.

CVE-2017-2415: Kai Kang of Tencent's Xuanwu Lab (tentcent.com)

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to high memory consumption

Description: An uncontrolled resource consumption issue was addressed through improved regex processing.

CVE-2016-9643: Gustavo Grieco

WebKit

Available for: Apple TV (4th generation)

Impact: A malicious website may exfiltrate data cross-origin

Description: A validation issue existed in the handling of page loading. This issue was addressed through improved logic.

CVE-2017-2367: lokihardt of Google Project Zero

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to universal cross site scripting

Description: A logic issue existed in the handling of frame objects. This issue was addressed with improved state management.

CVE-2017-2445: lokihardt of Google Project Zero

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A logic issue existed in the handling of strict mode functions. This issue was addressed with improved state management.

CVE-2017-2446: Natalie Silvanovich of Google Project Zero

WebKit

Available for: Apple TV (4th generation)

Impact: Visiting a maliciously crafted website may compromise user information

Description: A memory corruption issue was addressed through improved memory handling.

CVE-2017-2447: Natalie Silvanovich of Google Project Zero

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed through improved memory handling.

CVE-2017-2463: Kai Kang (4B5F5F4B) of Tencent's Xuanwu Lab (tencent.com) working with Trend Micro's Zero Day Initiative

Entry added March 28, 2017

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may lead to universal cross site scripting

Description: A logic issue existed in frame handling. This issue was addressed through improved state management.

CVE-2017-2475: lokihardt of Google Project Zero

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: A validation issue existed in element handling. This issue was addressed through improved validation.

CVE-2017-2479: lokihardt of Google Project Zero

Entry added March 28, 2017

WebKit

Available for: Apple TV (4th generation)

Impact: Processing maliciously crafted web content may exfiltrate data cross-origin

Description: A validation issue existed in element handling. This issue was addressed through improved validation.

CVE-2017-2480: lokihardt of Google Project Zero

CVE-2017-2493: lokihardt of Google Project Zero

Entry updated April 24, 2017

Additional recognition

XNU

We would like to acknowledge Lufeng Li of Qihoo 360 Vulcan Team for their assistance.

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