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             AUSCERT External Security Bulletin Redistribution

                   USN-4310-1: WebKitGTK+ vulnerability
                               31 March 2020


        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-2020-10018  

Reference:         ESB-2020.0938

Original Bulletin: 

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USN-4310-1: WebKitGTK+ vulnerability
30 March 2020

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

  o Ubuntu 19.10
  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 19.10
    libjavascriptcoregtk-4.0-18 - 2.28.0-0ubuntu0.19.10.2
    libwebkit2gtk-4.0-37 - 2.28.0-0ubuntu0.19.10.2
Ubuntu 18.04 LTS
    libjavascriptcoregtk-4.0-18 - 2.28.0-0ubuntu0.18.04.3
    libwebkit2gtk-4.0-37 - 2.28.0-0ubuntu0.18.04.3

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-2020-10018

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