About the security content of watchOS 7.5

This document describes the security content of watchOS 7.5.

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watchOS 7.5

Released May 24, 2021

Audio

Available for: Apple Watch Series 3 and later

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

Description: This issue was addressed with improved checks.

CVE-2021-30707: hjy79425575 working with Trend Micro Zero Day Initiative

Audio

Available for: Apple Watch Series 3 and later

Impact: Parsing a maliciously crafted audio file may lead to disclosure of user information

Description: This issue was addressed with improved checks.

CVE-2021-30685: Mickey Jin (@patch1t) of Trend Micro

Core Services

Available for: Apple Watch Series 3 and later

Impact: A malicious application may be able to gain root privileges

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

CVE-2021-30681: Zhongcheng Li (CK01)

CoreAudio

Available for: Apple Watch Series 3 and later

Impact: Processing a maliciously crafted audio file may disclose restricted memory

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

CVE-2021-30686: Mickey Jin of Trend Micro

Crash Reporter

Available for: Apple Watch Series 3 and later

Impact: A malicious application may be able to modify protected parts of the file system

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

CVE-2021-30727: Cees Elzinga

CVMS

Available for: Apple Watch Series 3 and later

Impact: A local attacker may be able to elevate  their privileges

Description: This issue was addressed with improved checks.

CVE-2021-30724: Mickey Jin (@patch1t) of Trend Micro

Heimdal

Available for: Apple Watch Series 3 and later

Impact: A local user may be able to leak sensitive user information

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

CVE-2021-30697: Gabe Kirkpatrick (@gabe_k)

Heimdal

Available for: Apple Watch Series 3 and later

Impact: A malicious application may cause a denial of service or potentially disclose memory contents

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

CVE-2021-30710: Gabe Kirkpatrick (@gabe_k)

ImageIO

Available for: Apple Watch Series 3 and later

Impact: Processing a maliciously crafted image may lead to disclosure of user information

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

CVE-2021-30687: Hou JingYi (@hjy79425575) of Qihoo 360

ImageIO

Available for: Apple Watch Series 3 and later

Impact: Processing a maliciously crafted image may lead to disclosure of user information

Description: This issue was addressed with improved checks.

CVE-2021-30700: Ye Zhang(@co0py_Cat) of Baidu Security

ImageIO

Available for: Apple Watch Series 3 and later

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

Description: This issue was addressed with improved checks.

CVE-2021-30701: Mickey Jin (@patch1t) of Trend Micro and Ye Zhang of Baidu Security

ImageIO

Available for: Apple Watch Series 3 and later

Impact: Processing a maliciously crafted ASTC file may disclose memory contents

Description: This issue was addressed with improved checks.

CVE-2021-30705: Ye Zhang of Baidu Security

Kernel

Available for: Apple Watch Series 3 and later

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

Description: A logic issue was addressed with improved validation.

CVE-2021-30740: Linus Henze (pinauten.de)

Kernel

Available for: Apple Watch Series 3 and later

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

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

CVE-2021-30704: an anonymous researcher

Kernel

Available for: Apple Watch Series 3 and later

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

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

CVE-2021-30715: The UK's National Cyber Security Centre (NCSC)

Kernel

Available for: Apple Watch Series 3 and later

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

Description: A buffer overflow was addressed with improved size validation.

CVE-2021-30736: Ian Beer of Google Project Zero

LaunchServices

Available for: Apple Watch Series 3 and later

Impact: A malicious application may be able to break out of its sandbox

Description: This issue was addressed with improved environment sanitization.

CVE-2021-30677: Ron Waisberg (@epsilan)

Security

Available for: Apple Watch Series 3 and later

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

Description: A memory corruption issue in the ASN.1 decoder was addressed by removing the vulnerable code.

CVE-2021-30737: xerub

WebKit

Available for: Apple Watch Series 3 and later

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

Description: A cross-origin issue with iframe elements was addressed with improved tracking of security origins.

CVE-2021-30744: Dan Hite of jsontop

WebKit

Available for: Apple Watch Series 3 and later

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

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

CVE-2021-21779: Marcin Towalski of Cisco Talos

WebKit

Available for: Apple Watch Series 3 and later

Impact: A malicious application may be able to leak sensitive user information

Description: A logic issue was addressed with improved restrictions.

CVE-2021-30682: an anonymous researcher and 1lastBr3ath

WebKit

Available for: Apple Watch Series 3 and later

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

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

CVE-2021-30689: an anonymous researcher

WebKit

Available for: Apple Watch Series 3 and later

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

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

CVE-2021-30749: an anonymous researcher and mipu94 of SEFCOM lab, ASU. working with Trend Micro Zero Day Initiative

CVE-2021-30734: Jack Dates of RET2 Systems, Inc. (@ret2systems) working with Trend Micro Zero Day Initiative

WebKit

Available for: Apple Watch Series 3 and later

Impact: A malicious website may be able to access restricted ports on arbitrary servers

Description: A logic issue was addressed with improved restrictions.

CVE-2021-30720: David Schütz (@xdavidhu)

Additional recognition

CommCenter

We would like to acknowledge CHRISTIAN MINA for their assistance.

ImageIO

We would like to acknowledge Jzhu working with Trend Micro Zero Day Initiative and an anonymous researcher for their assistance.

Mail Drafts

We would like to acknowledge Lauritz Holtmann (@_lauritz_) for their assistance.

WebKit

We would like to acknowledge Chris Salls (@salls) of Makai Security for their assistance.

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