About the security content of Safari 14.1.1

This document describes the security content of Safari 14.1.1.

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Safari 14.1.1

Released May 24, 2021

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 Schütz (@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.

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