Memory corruption in iPadOS and Apple iOS - CVE-2021-30851

Vulnerability identifier: #VU56733

CSH Severity: High

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-2021-30851

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

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

iPadOS
Apple iOS
Gentoo Linux
Arch Linux
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Enterprise Storage
watchOS
HPE Helion Openstack
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
macOS
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
tvOS
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Desktop Applications
SUSE Linux Enterprise Realtime Extension
Ubuntu
Fedora
WebKitGTK+
WPE WebKit
Apple Safari
webkit2gtk (Debian package)
wpewebkit (Debian package)
webkit2gtk3
typelib-1_0-WebKit2-4_0
libjavascriptcoregtk-4_0-18
libjavascriptcoregtk-4_0-18-debuginfo
libwebkit2gtk-4_0-37
libwebkit2gtk-4_0-37-debuginfo
typelib-1_0-JavaScriptCore-4_0
typelib-1_0-WebKit2WebExtension-4_0
webkit2gtk-4_0-injected-bundles
webkit2gtk-4_0-injected-bundles-debuginfo
webkit2gtk3-debugsource
libwebkit2gtk3-lang
webkit2gtk3-devel
webkit2gtk3-jsc
webkit2gtk3-jsc-devel
webkit2gtk3 (Red Hat package)
webkitgtk4 (Red Hat package)
wpewebkit
webkit2gtk
libwebkit2gtk-4.0-37 (Ubuntu package)
libjavascriptcoregtk-4.0-18 (Ubuntu package)

Install updates from vendor's website.

iPadOS - update to 15.0 19A346
Apple iOS - update to 15.0 19A346
WebKitGTK+ - update to 2.34.0
WPE WebKit - update to 2.34.0
watchOS - update to 8.0 19R346
macOS - update to 12.0.1 21A559
tvOS - update to 15.0 19J346
Apple Safari - update to 15.0
webkit2gtk (Debian package) - addressed in versions 2.34.1-1~deb10u1, 2.34.1-1~deb11u1
wpewebkit (Debian package) - update to 2.34.1-1~deb11u1
webkit2gtk3 - addressed in versions 2.34.1-1.fc33, 2.34.1-1.fc34
typelib-1_0-WebKit2-4_0 - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
libjavascriptcoregtk-4_0-18 - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
libjavascriptcoregtk-4_0-18-debuginfo - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
libwebkit2gtk-4_0-37 - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
libwebkit2gtk-4_0-37-debuginfo - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
typelib-1_0-JavaScriptCore-4_0 - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
typelib-1_0-WebKit2WebExtension-4_0 - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
webkit2gtk-4_0-injected-bundles - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
webkit2gtk-4_0-injected-bundles-debuginfo - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
webkit2gtk3-debugsource - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
libwebkit2gtk3-lang - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
webkit2gtk3-devel - addressed in versions 2.34.1-2.77.1, 2.34.1-3.87.1, 2.34.1-18.1, 2.34.3-2.82.1, 2.34.3-3.92.1, 2.34.3-23.3
webkit2gtk3 - update to 2.34.6-1
webkit2gtk3-devel - update to 2.34.6-1
webkit2gtk3-jsc - update to 2.34.6-1
webkit2gtk3-jsc-devel - update to 2.34.6-1
webkit2gtk3 (Red Hat package) - update to 2.34.6-1.el8
webkitgtk4 (Red Hat package) - update to 2.48.3-2.el7_9
wpewebkit - update to 2.34.1-1
webkit2gtk - update to 2.34.1-1
libwebkit2gtk-4.0-37 (Ubuntu package) - addressed in versions 2.34.1-0ubuntu0.20.04.1, 2.34.1-0ubuntu0.21.04.1, 2.34.1-0ubuntu0.21.10.1
libjavascriptcoregtk-4.0-18 (Ubuntu package) - addressed in versions 2.34.1-0ubuntu0.20.04.1, 2.34.1-0ubuntu0.21.04.1, 2.34.1-0ubuntu0.21.10.1

• https://support.apple.com/en-us/HT212814

• Multiple vulnerabilities in Apple iOS and iPadOS
• Multiple vulnerabilities in Apple Safari
• Multiple vulnerabilities in Apple watchOS
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in WebKitGTK+ and WPE WebKit
• Debian update for webkit2gtk
• Debian update for wpewebkit
• Multiple vulnerabilities in macOS Monterey
• Gentoo update for WebkitGTK+
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• Ubuntu update for webkit2gtk
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• Arch Linux update for wpewebkit
• Arch Linux update for webkit2gtk
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• Fedora 33 update for webkit2gtk3
• Fedora 34 update for webkit2gtk3
• Anolis OS update for webkit2gtk3
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for webkitgtk4