[USN-3640-1] WebKitGTK+ vulnerability

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[USN-3640-1] WebKitGTK+ vulnerability

Marc Deslauriers-3
==========================================================================
Ubuntu Security Notice USN-3640-1
May 08, 2018

webkit2gtk vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS

Summary:

A security issue was fixed in WebKitGTK+.

Software Description:
- webkit2gtk: Web content engine library for GTK+

Details:

Ivan Fratric discovered that WebKitGTK+ incorrectly handled certain web
content. If a user were tricked into viewing a malicious website, a remote
attacker could possibly exploit this to execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  libjavascriptcoregtk-4.0-18     2.20.2-0ubuntu0.18.04.1
  libwebkit2gtk-4.0-37            2.20.2-0ubuntu0.18.04.1

Ubuntu 17.10:
  libjavascriptcoregtk-4.0-18     2.20.2-0ubuntu0.17.10.1
  libwebkit2gtk-4.0-37            2.20.2-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
  libjavascriptcoregtk-4.0-18     2.20.2-0ubuntu0.16.04.1
  libwebkit2gtk-4.0-37            2.20.2-0ubuntu0.16.04.1

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-3640-1
  CVE-2018-4200

Package Information:
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.2-0ubuntu0.18.04.1
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.2-0ubuntu0.17.10.1
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.20.2-0ubuntu0.16.04.1


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