=========================================================================Ubuntu Security Notice USN-3781-1
October 03, 2018

webkit2gtk vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- 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 18.04 LTS:
  libjavascriptcoregtk-4.0-18     2.22.2-0ubuntu0.18.04.1
  libwebkit2gtk-4.0-37            2.22.2-0ubuntu0.18.04.1

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-3781-1
  CVE-2018-4191, CVE-2018-4197, CVE-2018-4207, CVE-2018-4208,
  CVE-2018-4209, CVE-2018-4210, CVE-2018-4212, CVE-2018-4213,
  CVE-2018-4299, CVE-2018-4306, CVE-2018-4309, CVE-2018-4311,
  CVE-2018-4312, CVE-2018-4314, CVE-2018-4315, CVE-2018-4316,
  CVE-2018-4317, CVE-2018-4318, CVE-2018-4319, CVE-2018-4323,
  CVE-2018-4328, CVE-2018-4358, CVE-2018-4359, CVE-2018-4361

Package Information:
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.22.2-0ubuntu0.18.04.1