About the security content of watchOS 2.2.2

This document describes the security content of watchOS 2.2.2.

About Apple security updates

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

watchOS 2.2.2

Released July 18, 2016

CoreGraphics

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A remote attacker may be able to execute arbitrary code

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

CVE-2016-4637 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)

ImageIO

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A remote attacker may be able to cause a denial of service

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

CVE-2016-4632 : Evgeny Sidorov of Yandex

ImageIO

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A remote attacker may be able to execute arbitrary code

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

CVE-2016-4631 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)

IOAcceleratorFamily

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local user may be able to execute arbitrary code with kernel privileges

Description: A null pointer dereference was addressed through improved validation.

CVE-2016-4627 : Ju Zhu of Trend Micro

IOAcceleratorFamily

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local user may be able to read kernel memory

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

CVE-2016-4628 : Ju Zhu of Trend Micro

IOHIDFamily

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local user may be able to execute arbitrary code with kernel privileges

Description: A null pointer dereference was addressed through improved input validation.

CVE-2016-4626 : Stefan Esser of SektionEins

IOHIDFamily

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

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

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

CVE-2016-4650 : Peter Pi of Trend Micro working with HP's Zero Day Initiative

Entry added July 29, 2016

Kernel

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local user may be able to execute arbitrary code with kernel privileges

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

CVE-2016-1863 : Ian Beer of Google Project Zero

CVE-2016-4653 : Ju Zhu of Trend Micro

CVE-2016-4582 : Shrek_wzw and Proteas of Qihoo 360 Nirvan Team

Kernel

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local user may be able to cause a system denial of service

Description: A null pointer dereference was addressed through improved input validation.

CVE-2016-1865 : CESG, Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent

Libc

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution

Description: A buffer overflow existed within the "link_ntoa()" function in linkaddr.c. This issue was addressed through additional bounds checking.

CVE-2016-6559 : Apple

Entry added January 10, 2017

libxml2

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: Multiple vulnerabilities in libxml2

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

CVE-2015-8317 : Hanno Boeck

CVE-2016-1836 : Wei Lei and Liu Yang of Nanyang Technological University

CVE-2016-4447 : Wei Lei and Liu Yang of Nanyang Technological University

CVE-2016-4448 : Apple

CVE-2016-4483 : Gustavo Grieco

CVE-2016-4614 : Nick Wellnhofer

CVE-2016-4615 : Nick Wellnhofer

CVE-2016-4616 : Michael Paddon

Entry updated June 5, 2017

libxml2

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: Parsing a maliciously crafted XML document may lead to disclosure of user information

Description: An access issue existed in the parsing of maliciously crafted XML files. This issue was addressed through improved input validation.

CVE-2016-4449 : Kostya Serebryany

libxslt

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: Multiple vulnerabilities in libxslt

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

CVE-2016-1683 : Nicolas Grégoire

CVE-2016-1684 : Nicolas Grégoire

CVE-2016-4607 : Nick Wellnhofer

CVE-2016-4608 : Nicolas Grégoire

CVE-2016-4609 : Nick Wellnhofer

CVE-2016-4610 : Nick Wellnhofer

Entry updated April 11, 2017

Sandbox Profiles

Available for: Apple Watch Sport, Apple Watch, Apple Watch Edition, and Apple Watch Hermes

Impact: A local application may be able to access the process list

Description: An access issue existed with privileged API calls. This issue was addressed through additional restrictions.

CVE-2016-4594 : Stefan Esser of SektionEins

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