Thursday, May 27, 2021

Apple Security Advisory 2021-05-25-5

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APPLE-SA-2021-05-25-5 Safari 14.1.1

Safari 14.1.1 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212534.

WebKit
Available for: macOS Catalina and macOS Mojave
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: macOS Catalina and macOS Mojave
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: macOS Catalina and macOS Mojave
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 Sch├╝tz (@xdavidhu)

WebKit
Available for: macOS Catalina and macOS Mojave
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: macOS Catalina and macOS Mojave
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: macOS Catalina and macOS Mojave
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: macOS Catalina and macOS Mojave
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: An integer overflow was addressed with improved input
validation.
CVE-2021-30663: an anonymous researcher

WebRTC
Available for: macOS Catalina and macOS Mojave
Impact: A remote attacker may be able to cause a denial of service
Description: A null pointer dereference was addressed with improved
input validation.
CVE-2021-23841: Tavis Ormandy of Google
CVE-2021-30698: Tavis Ormandy of Google

Additional recognition

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

Installation note:

This update may be obtained from the Mac App Store.

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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