[USN-5255-1] WebKitGTK vulnerabilities

========================================================================== Ubuntu Security Notice USN-5255-1 January 27, 2022
webkit2gtk vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS
Several security issues were fixed in WebKitGTK.
Software Description: – webkit2gtk: Web content engine library for GTK+
A large number of security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: libjavascriptcoregtk-4.0-18 2.34.4-0ubuntu0.21.10.1 libwebkit2gtk-4.0-37 2.34.4-0ubuntu0.21.10.1
Ubuntu 20.04 LTS: libjavascriptcoregtk-4.0-18 2.34.4-0ubuntu0.20.04.1 libwebkit2gtk-4.0-37 2.34.4-0ubuntu0.20.04.1
This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any applications that use WebKitGTK, such as Epiphany, to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5255-1 CVE-2021-30934, CVE-2021-30936, CVE-2021-30951, CVE-2021-30952, CVE-2021-30953, CVE-2021-30954, CVE-2021-30984
Package Information: launchpad.net/ubuntu/+source/webkit2gtk/2.34.4-0ubuntu0.21.10.1 launchpad.net/ubuntu/+source/webkit2gtk/2.34.4-0ubuntu0.20.04.1