About the security content of watchOS 3.1.3

This document describes the security content of watchOS 3.1.3.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.

For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.

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

watchOS 3.1.3

Accounts

Available for: All Apple Watch models

Impact: Uninstalling an app did not reset the authorization settings

Description: An issue existed which did not reset the authorization settings on app uninstall. This issue was addressed through improved sanitization.

CVE-2016-7651: Ju Zhu and Lilang Wu of Trend Micro

APNs Server

Available for: All Apple Watch models

Impact: An attacker in a privileged network position can track a user's activity

Description: A client certificate was sent in plaintext. This issue was addressed through improved certificate handling.

CVE-2017-2383: Matthias Wachs and Quirin Scheitle of Technical University Munich (TUM)

Audio

Available for: All Apple Watch models

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

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

CVE-2016-7658: Haohao Kong of Keen Lab (@keen_lab) of Tencent

CVE-2016-7659: Haohao Kong of Keen Lab (@keen_lab) of Tencent

CoreFoundation

Available for: All Apple Watch models

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

Description: A memory corruption issue existed in the processing of strings. This issue was addressed through improved bounds checking.

CVE-2016-7663: an anonymous researcher

CoreGraphics

Available for: All Apple Watch models

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

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

CVE-2016-7627: TRAPMINE Inc. & Meysam Firouzi @R00tkitSMM

CoreMedia Playback

Available for: All Apple Watch models

Impact: Processing a maliciously crafted .mp4 file may lead to arbitrary code execution

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

CVE-2016-7588: dragonltx of Huawei 2012 Laboratories

CoreText

Available for: All Apple Watch models

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

Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

CVE-2016-7595: riusksk(泉哥) of Tencent Security Platform Department

Disk Images

Available for: All Apple Watch models

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-2016-7616: daybreaker@Minionz working with Trend Micro's Zero Day Initiative

FontParser

Available for: All Apple Watch models

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

Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

CVE-2016-4691: riusksk(泉哥) of Tencent Security Platform Department

FontParser

Available for: All Apple Watch models

Impact: Processing a maliciously crafted font 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-2016-4688: Simon Huang of Alipay company, thelongestusernameofall@gmail.com

ICU

Available for: All Apple Watch models

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

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

CVE-2016-7594: André Bargull

ImageIO

Available for: All Apple Watch models

Impact: A remote attacker may be able to leak memory

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

CVE-2016-7643: Yangkang (@dnpushme) of Qihoo360 Qex Team

IOHIDFamily

Available for: All Apple Watch models

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

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

CVE-2016-7591: daybreaker of Minionz

IOKit

Available for: All Apple Watch models

Impact: An application may be able to read kernel memory

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

CVE-2016-7657: Keen Lab working with Trend Micro's Zero Day Initiative

IOKit

Available for: All Apple Watch models

Impact: A local user may be able to determine kernel memory layout

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

CVE-2016-7714: Qidan He (@flanker_hqd) from KeenLab working with Trend Micro's Zero Day Initiative

Kernel

Available for: All Apple Watch models

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

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

CVE-2016-7606: Chen Qin of Topsec Alpha Team (topsec.com), @cocoahuke

CVE-2016-7612: Ian Beer of Google Project Zero

Kernel

Available for: All Apple Watch models

Impact: An application may be able to read kernel memory

Description: An insufficient initialization issue was addressed by properly initializing memory returned to user space.

CVE-2016-7607: Brandon Azad

Kernel

Available for: All Apple Watch models

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

Description: A denial of service issue was addressed through improved memory handling.

CVE-2016-7615: The UK's National Cyber Security Centre (NCSC)

Kernel

Available for: All Apple Watch models

Impact: A local user may be able to cause an unexpected system termination or arbitrary code execution in the kernel

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

CVE-2016-7621: Ian Beer of Google Project Zero

Kernel

Available for: All Apple Watch models

Impact: A local user may be able to gain root privileges

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

CVE-2016-7637: Ian Beer of Google Project Zero

Kernel

Available for: All Apple Watch models

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

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

CVE-2016-7644: Ian Beer of Google Project Zero

Kernel

Available for: All Apple Watch models

Impact: An application may be able to cause a denial of service

Description: A denial of service issue was addressed through improved memory handling.

CVE-2016-7647: Lufeng Li of Qihoo 360 Vulcan Team

Kernel

Available for: All Apple Watch models

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-2017-2370: Ian Beer of Google Project Zero

Kernel

Available for: All Apple Watch models

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-2017-2360: Ian Beer of Google Project Zero

libarchive

Available for: All Apple Watch models

Impact: A local attacker may be able to overwrite existing files

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

CVE-2016-7619: an anonymous researcher

libarchive

Available for: All Apple Watch models

Impact: Unpacking a maliciously crafted archive may lead to arbitrary code execution

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

CVE-2016-8687: Agostino Sarubbo of Gentoo

Profiles

Available for: All Apple Watch models

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

Description: A memory corruption issue existed in the handling of certificate profiles. This issue was addressed through improved input validation.

CVE-2016-7626: Maksymilian Arciemowicz (cxsecurity.com)

Security

Available for: All Apple Watch models

Impact: An attacker may be able to exploit weaknesses in the 3DES cryptographic algorithm

Description: 3DES was removed as a default cipher.

CVE-2016-4693: Gaëtan Leurent and Karthikeyan Bhargavan from INRIA Paris

Security

Available for: All Apple Watch models

Impact: An attacker in a privileged network position may be able to cause a denial of service

Description: A validation issue existed in the handling of OCSP responder URLs. This issue was addressed by verifying OCSP revocation status after CA validation and limiting the number of OCSP requests per certificate.

CVE-2016-7636: Maksymilian Arciemowicz (cxsecurity.com)

Security

Available for: All Apple Watch models

Impact: Certificates may be unexpectedly evaluated as trusted

Description: A certificate evaluation issue existed in certificate validation. This issue was addressed through additional validation of certificates.

CVE-2016-7662: Apple

syslog

Available for: All Apple Watch models

Impact: A local user may be able to gain root privileges

Description: An issue in mach port name references was addressed through improved validation.

CVE-2016-7660: Ian Beer of Google Project Zero

Unlock with iPhone

Available for: All Apple Watch models

Impact: Apple Watch may unlock when off the user’s wrist

Description: A logic issue was addressed through improved state management.

CVE-2017-2352: Ashley Fernandez of raptAware Pty Ltd

WebKit

Available for: All Apple Watch models

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

Description: A memory corruption issue was addressed through improved state management.

CVE-2016-7589: Apple

WebKit

Available for: All Apple Watch models

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

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

CVE-2017-2363: lokihardt of Google Project Zero