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

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iCloud for Windows 10.9.3

Released March 25, 2020

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, and an anonymous researcher for their assistance.

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