Business Logic Errors in WebKitGTK+ and WPE WebKit - CVE-2021-1870

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Main Vulnerability Database Vulnerabilities #VU50043

Business Logic Errors in WebKitGTK+ and WPE WebKit - CVE-2021-1870

Published: January 27, 2021 / Updated: March 23, 2021


Vulnerability identifier: #VU50043
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-2021-1870
CWE-ID: CWE-840
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 system.

The vulnerability exists due to a logic issue in the WebKit component. A remote attacker can trick a victim to visit a malicious website and execute arbitrary code on the system.

Note: The vulnerability is being actively exploited in the wild.


Affected software

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

How to mitigate CVE-2021-1870

Install updates from vendor's website.

WebKitGTK+ - update to 2.30.6
WPE WebKit - update to 2.30.6
macOS - update to 11.2 20D64
iPadOS - update to 14.4 18D52
Apple iOS - update to 14.4 18D52
webkit2gtk (Debian package) - update to 2.30.6-1~deb10u1
webkit2gtk3 - addressed in versions 2.30.6-1.fc32, 2.32.0-1.fc33, 2.32.0-1.fc34
libjavascriptcoregtk-4_0-18 - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
webkit2gtk3-devel - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
webkit2gtk3-debugsource - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
typelib-1_0-WebKit2WebExtension-4_0 - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
typelib-1_0-WebKit2-4_0 - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
typelib-1_0-JavaScriptCore-4_0 - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
libjavascriptcoregtk-4_0-18-debuginfo - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
libwebkit2gtk-4_0-37 - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
libwebkit2gtk-4_0-37-debuginfo - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
webkit2gtk-4_0-injected-bundles - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
webkit2gtk-4_0-injected-bundles-debuginfo - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
libwebkit2gtk3-lang - addressed in versions 2.32.0-3.15.1, 2.32.0-3.74.1, 2.32.1-2.63.3
webkitgtk4 (Red Hat package) - update to 2.48.3-2.el7_9
libwebkit2gtk-4.0-37 (Ubuntu package) - addressed in versions 2.30.6-0ubuntu0.18.04.1, 2.30.6-0ubuntu0.20.04.1, 2.30.6-0ubuntu0.20.10.1
libjavascriptcoregtk-4.0-18 (Ubuntu package) - addressed in versions 2.30.6-0ubuntu0.18.04.1, 2.30.6-0ubuntu0.20.04.1, 2.30.6-0ubuntu0.20.10.1

External References

Related Security Bulletins