About the security content of iCloud for Windows 10.9.3

This document describes the security content of iCloud for Windows 10.9.3.

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 10.9.3

libxml2

Available for: Windows 10 and later via the Microsoft Store

Impact: Multiple issues in libxml2

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

CVE-2020-3910: LGTM.com

libxml2

Available for: Windows 10 and later via the Microsoft Store

Impact: Multiple issues in libxml2

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

CVE-2020-3909: LGTM.com

CVE-2020-3911: found by OSS-Fuzz

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-3901: Benjamin Randazzo (@____benjamin)

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: A download's origin may be incorrectly associated

Description: A logic issue was addressed with improved restrictions.

CVE-2020-3887: Ryan Pickren (ryanpickren.com)

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-3895: grigoritchy

CVE-2020-3900: Dongzhuo Zhao working with ADLab of Venustech

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: An application may be able to read restricted memory

Description: A race condition was addressed with additional validation.

CVE-2020-3894: Sergei Glazunov of Google Project Zero

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: A remote attacker may be able to cause arbitrary code execution

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

CVE-2020-3897: Brendan Draper (@6r3nd4n) working with Trend Micro’s Zero Day Initiative

WebKit

Available for: Windows 10 and later via the Microsoft Store

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

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

CVE-2020-9783: Apple

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: A remote attacker may be able to cause arbitrary code execution

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

CVE-2020-3899: found by OSS-Fuzz

WebKit

Available for: Windows 10 and later via the Microsoft Store

Impact: Processing maliciously crafted web content may lead to a cross-site scripting attack

Description: An input validation issue was addressed with improved input validation.

CVE-2020-3902: Yiğit Can YILMAZ (@yilmazcanyigit)

WebKit Page Loading

Available for: Windows 10 and later via the Microsoft Store

Impact: A file URL may be incorrectly processed

Description: A logic issue was addressed with improved restrictions.

CVE-2020-3885: Ryan Pickren (ryanpickren.com)

Additional recognition

WebKit

We would like to acknowledge Emilio Cobos Álvarez of Mozilla, Samuel Groß of Google Project Zero, hearmen for their assistance.