About the security content of iCloud for Windows 11.3

This document describes the security content of iCloud for Windows 11.3.

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.

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

For more information about security, see the Apple Product Security page.

iCloud for Windows 11.3

CoreGraphics

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9883: an anonymous researcher, Mickey Jin of Trend Micro

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-27933: Xingwei Lin of Ant-Financial Light-Year Security Lab

ImageIO

Available for: Windows 10 and later via the Microsoft Store

Impact: Multiple buffer overflow issues existed in openEXR

Description: Multiple issues in openEXR were addressed with improved checks.

CVE-2020-11758: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11759: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11760: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11761: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11762: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11763: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11764: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-11765: Xingwei Lin of Ant-Financial Light-Year Security Lab

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9871: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9872: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9874: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9879: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9936: Mickey Jin of Trend Micro

CVE-2020-9937: Xingwei Lin of Ant-Financial Light-Year Security Lab

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9873: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9938: Xingwei Lin of Ant-Financial Light-Year Security Lab

CVE-2020-9984: an anonymous researcher

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9919: Mickey Jin of Trend Micro

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9876: Mickey Jin of Trend Micro

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9877: Xingwei Lin of Ant-Financial Light-Year Security Lab

ImageIO

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9875: Mickey Jin of Trend Micro

libxml2

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9926: Found by OSS-Fuzz

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9894: 0011 working with Trend Micro Zero Day Initiative

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

Description: An access issue existed in Content Security Policy. This issue was addressed with improved access restrictions.

CVE-2020-9915: Ayoub AIT ELMOKHTAR of Noon

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9925: an anonymous researcher

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9893: 0011 working with Trend Micro Zero Day Initiative

CVE-2020-9895: Wen Xu of SSLab, Georgia Tech

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication

Description: Multiple issues were addressed with improved logic.

CVE-2020-9910: Samuel Groß of Google Project Zero

WebKit Page Loading

Available for: Windows 10 and later via the Microsoft Store

Impact: A malicious attacker may be able to conceal the destination of a URL

Description: A URL Unicode encoding issue was addressed with improved state management.

CVE-2020-9916: Rakesh Mane (@RakeshMane10)

WebKit Web Inspector

Available for: Windows 10 and later via the Microsoft Store

Impact: Copying a URL from Web Inspector may lead to command injection

Description: A command injection issue existed in Web Inspector. This issue was addressed with improved escaping.

CVE-2020-9862: Ophir Lojkine (@lovasoa)

Additional recognition

ImageIO

We would like to acknowledge Xingwei Lin of Ant-Financial Light-Year Security Lab for their assistance.