Integer overflow in macOS - CVE-2021-30663

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Main Vulnerability Database Vulnerabilities #VU52814

Integer overflow in macOS - CVE-2021-30663

Published: May 3, 2021 / Updated: June 3, 2021


Vulnerability identifier: #VU52814
CSH Severity: Critical
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30663
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in WebKit. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being actively exploited in the wild.


Affected software

macOS
Arch Linux
Gentoo Linux
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
SUSE OpenStack Cloud
Apple iOS
SUSE Linux Enterprise Server
iPadOS
tvOS
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Desktop Applications
Ubuntu
Fedora
webkit2gtk (Debian package)
libjavascriptcoregtk-4.0-18 (Ubuntu package)
libwebkit2gtk-4.0-37 (Ubuntu package)
webkit2gtk3
webkit2gtk3-devel
webkit2gtk3-debugsource
webkit2gtk-4_0-injected-bundles-debuginfo
webkit2gtk-4_0-injected-bundles
typelib-1_0-WebKit2WebExtension-4_0
typelib-1_0-WebKit2-4_0
libwebkit2gtk3-lang
typelib-1_0-JavaScriptCore-4_0
libwebkit2gtk-4_0-37-debuginfo
libwebkit2gtk-4_0-37
libjavascriptcoregtk-4_0-18-debuginfo
libjavascriptcoregtk-4_0-18
webkitgtk4 (Red Hat package)
typelib-1_0-Soup-2_4
libsoup-lang
libsoup-devel
libsoup-debugsource
libsoup-2_4-1-debuginfo
libsoup-2_4-1
WebKitGTK+
Apple Safari

How to mitigate CVE-2021-30663

Install updates from vendor's website.

macOS - update to 11.3.1 20E241
webkit2gtk (Debian package) - update to 2.32.3-1~deb10u1
WebKitGTK+ - update to 2.33.1
Apple iOS - addressed in versions 12.5.3 16H41, 14.5.1 18E212
Apple Safari - addressed in versions 14.1.1, 14.1 14611.1.21.161.7, 14.1 15611.1.21.161.7
tvOS - update to 14.6 18L569
libjavascriptcoregtk-4.0-18 (Ubuntu package) - addressed in versions 2.32.3-0ubuntu0.18.04.1, 2.32.3-0ubuntu0.20.04.1, 2.32.3-0ubuntu0.21.04.1
libwebkit2gtk-4.0-37 (Ubuntu package) - addressed in versions 2.32.3-0ubuntu0.18.04.1, 2.32.3-0ubuntu0.20.04.1, 2.32.3-0ubuntu0.21.04.1
webkit2gtk3 - addressed in versions 2.32.3-1.fc33, 2.32.3-1.fc34
webkit2gtk3-devel - update to 2.32.3-3.77.3
webkit2gtk3-debugsource - update to 2.32.3-3.77.3
webkit2gtk-4_0-injected-bundles-debuginfo - update to 2.32.3-3.77.3
webkit2gtk-4_0-injected-bundles - update to 2.32.3-3.77.3
typelib-1_0-WebKit2WebExtension-4_0 - update to 2.32.3-3.77.3
typelib-1_0-WebKit2-4_0 - update to 2.32.3-3.77.3
libwebkit2gtk3-lang - update to 2.32.3-3.77.3
typelib-1_0-JavaScriptCore-4_0 - update to 2.32.3-3.77.3
libwebkit2gtk-4_0-37-debuginfo - update to 2.32.3-3.77.3
libwebkit2gtk-4_0-37 - update to 2.32.3-3.77.3
libjavascriptcoregtk-4_0-18-debuginfo - update to 2.32.3-3.77.3
libjavascriptcoregtk-4_0-18 - update to 2.32.3-3.77.3
webkitgtk4 (Red Hat package) - update to 2.48.3-2.el7_9
typelib-1_0-Soup-2_4 - update to 2.62.2-17.8.1
libsoup-lang - update to 2.62.2-17.8.1
libsoup-devel - update to 2.62.2-17.8.1
libsoup-debugsource - update to 2.62.2-17.8.1
libsoup-2_4-1-debuginfo - update to 2.62.2-17.8.1
libsoup-2_4-1 - update to 2.62.2-17.8.1

External References

Related Security Bulletins