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Apple Security Advisory 2021-04-26-8

Apple Security Advisory 2021-04-26-8
Posted Apr 28, 2021
Authored by Apple | Site apple.com

Apple Security Advisory 2021-04-26-8 - iCloud for Windows 12.3 addresses cross site scripting and use-after-free vulnerabilities.

tags | advisory, vulnerability, xss
systems | windows, apple
advisories | CVE-2020-7463, CVE-2021-1811, CVE-2021-1825, CVE-2021-1857
MD5 | a9f491649e323a6f4652efcef5f44e60

Apple Security Advisory 2021-04-26-8

Change Mirror Download
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APPLE-SA-2021-04-26-8 iCloud for Windows 12.3

iCloud for Windows 12.3 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212321.

CFNetwork
Available for: Windows 10 and later via the Microsoft Store
Impact: Processing maliciously crafted web content may disclose
sensitive user information
Description: A memory initialization issue was addressed with
improved memory handling.
CVE-2021-1857: an anonymous researcher

CoreText
Available for: Windows 10 and later via the Microsoft Store
Impact: Processing a maliciously crafted font may result in the
disclosure of process memory
Description: A logic issue was addressed with improved state
management.
CVE-2021-1811: Xingwei Lin of Ant Security Light-Year Lab

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-2021-1825: Alex Camboe of Aon’s Cyber Solutions

WebRTC
Available for: Windows 10 and later via the Microsoft Store
Impact: A remote attacker may be able to cause unexpected system
termination or corrupt kernel memory
Description: A use after free issue was addressed with improved
memory management.
CVE-2020-7463: Megan2013678

Additional recognition

CoreCrypto
We would like to acknowledge Andy Russon of Orange Group for their
assistance.

Installation note:

This update may be obtained from:
https://support.apple.com/en-us/HT201391

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

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