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Ubuntu Security Notice USN-3460-1
October 23, 2017

webkit2gtk vulnerabilities
==========================================================================

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

- Ubuntu 17.04
- 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 17.04:
  libjavascriptcoregtk-4.0-18     2.18.0-0ubuntu0.17.04.2
  libwebkit2gtk-4.0-37            2.18.0-0ubuntu0.17.04.2

Ubuntu 16.04 LTS:
  libjavascriptcoregtk-4.0-18     2.18.0-0ubuntu0.16.04.2
  libwebkit2gtk-4.0-37            2.18.0-0ubuntu0.16.04.2

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://www.ubuntu.com/usn/usn-3460-1
  CVE-2017-7087, CVE-2017-7089, CVE-2017-7090, CVE-2017-7091,
  CVE-2017-7092, CVE-2017-7093, CVE-2017-7095, CVE-2017-7096,
  CVE-2017-7098, CVE-2017-7100, CVE-2017-7102, CVE-2017-7104,
  CVE-2017-7107, CVE-2017-7109, CVE-2017-7111, CVE-2017-7117,
  CVE-2017-7120

Package Information:
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.18.0-0ubuntu0.17.04.2
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.18.0-0ubuntu0.16.04.2