========================================================================== Ubuntu Security Notice USN-4939-1 May 10, 2021 webkit2gtk vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in WebKitGTK. Software Description: - webkit2gtk: Web content engine library for GTK+ Details: 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 20.10: libjavascriptcoregtk-4.0-18 2.32.0-0ubuntu0.20.10.1 libwebkit2gtk-4.0-37 2.32.0-0ubuntu0.20.10.1 Ubuntu 20.04 LTS: libjavascriptcoregtk-4.0-18 2.32.0-0ubuntu0.20.04.1 libwebkit2gtk-4.0-37 2.32.0-0ubuntu0.20.04.1 Ubuntu 18.04 LTS: libjavascriptcoregtk-4.0-18 2.32.0-0ubuntu0.18.04.1 libwebkit2gtk-4.0-37 2.32.0-0ubuntu0.18.04.1 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: https://ubuntu.com/security/notices/USN-4939-1 CVE-2021-1788, CVE-2021-1844, CVE-2021-1871 Package Information: https://launchpad.net/ubuntu/+source/webkit2gtk/2.32.0-0ubuntu0.20.10.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.32.0-0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.32.0-0ubuntu0.18.04.1