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             AUSCERT External Security Bulletin Redistribution

                  USN-3948-1: WebKitGTK+ vulnerabilities
                               17 April 2019


        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
                   Provide Misleading Information  -- Remote with User Interaction
                   Reduced Security                -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-11070 CVE-2019-8563 CVE-2019-8559
                   CVE-2019-8558 CVE-2019-8551 CVE-2019-8544
                   CVE-2019-8536 CVE-2019-8535 CVE-2019-8524
                   CVE-2019-8523 CVE-2019-8518 CVE-2019-8506
                   CVE-2019-8375 CVE-2019-6251 

Reference:         ESB-2019.1280

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3948-1: WebKitGTK+ vulnerabilities
16 April 2019

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

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS


Several security issues were fixed in WebKitGTK+.

Software Description

  o webkit2gtk - Web content engine library for GTK+


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

Ubuntu 18.10
    libjavascriptcoregtk-4.0-18 - 2.24.1-0ubuntu0.18.10.2
    libwebkit2gtk-4.0-37 - 2.24.1-0ubuntu0.18.10.2
Ubuntu 18.04 LTS
    libjavascriptcoregtk-4.0-18 - 2.24.1-0ubuntu0.18.04.1
    libwebkit2gtk-4.0-37 - 2.24.1-0ubuntu0.18.04.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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.


  o CVE-2019-11070
  o CVE-2019-6251
  o CVE-2019-8375
  o CVE-2019-8506
  o CVE-2019-8518
  o CVE-2019-8523
  o CVE-2019-8524
  o CVE-2019-8535
  o CVE-2019-8536
  o CVE-2019-8544
  o CVE-2019-8551
  o CVE-2019-8558
  o CVE-2019-8559
  o CVE-2019-8563

- --------------------------END INCLUDED TEXT--------------------

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