========================================================================== Ubuntu Security Notice USN-3687-1 June 18, 2018 webkit2gtk vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 17.10 - Ubuntu 16.04 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 18.04 LTS: libjavascriptcoregtk-4.0-18 2.20.3-0ubuntu0.18.04.1 libwebkit2gtk-4.0-37 2.20.3-0ubuntu0.18.04.1 Ubuntu 17.10: libjavascriptcoregtk-4.0-18 2.20.3-0ubuntu0.17.10.1 libwebkit2gtk-4.0-37 2.20.3-0ubuntu0.17.10.1 Ubuntu 16.04 LTS: libjavascriptcoregtk-4.0-18 2.20.3-0ubuntu0.16.04.1 libwebkit2gtk-4.0-37 2.20.3-0ubuntu0.16.04.1 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://usn.ubuntu.com/usn/usn-3687-1 CVE-2018-12293, CVE-2018-4190, CVE-2018-4199, CVE-2018-4218, CVE-2018-4222, CVE-2018-4232, CVE-2018-4233 Package Information: https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.3-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.3-0ubuntu0.17.10.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.3-0ubuntu0.16.04.1