ESB-2018.0068 - [Ubuntu] WebKitGTK+: Multiple vulnerabilities 2018-01-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0068
                        WebKitGTK+ vulnerabilities
                              5 January 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           WebKitGTK+
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Cross-site Scripting            -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-13870 CVE-2017-13866 CVE-2017-13856
                   CVE-2017-7156  

Reference:         ESB-2017.3196
                   ESB-2017.3194

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3514-1

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==========================================================================
Ubuntu Security Notice USN-3514-1
January 03, 2018

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

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

- - Ubuntu 17.10
- - 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 17.10:
  libjavascriptcoregtk-4.0-18     2.18.4-0ubuntu0.17.10.1
  libwebkit2gtk-4.0-37            2.18.4-0ubuntu0.17.10.1

Ubuntu 17.04:
  libjavascriptcoregtk-4.0-18     2.18.4-0ubuntu0.17.04.1
  libwebkit2gtk-4.0-37            2.18.4-0ubuntu0.17.04.1

Ubuntu 16.04 LTS:
  libjavascriptcoregtk-4.0-18     2.18.4-0ubuntu0.16.04.1
  libwebkit2gtk-4.0-37            2.18.4-0ubuntu0.16.04.1

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://www.ubuntu.com/usn/usn-3514-1
  CVE-2017-13856, CVE-2017-13866, CVE-2017-13870, CVE-2017-7156

Package Information:
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.18.4-0ubuntu0.17.10.1
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.18.4-0ubuntu0.17.04.1
  https://launchpad.net/ubuntu/+source/webkit2gtk/2.18.4-0ubuntu0.16.04.1

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