ESB-2017.2942 - [Ubuntu] WebKitGTK+: Multiple vulnerabilities 2017-11-17

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2942
                        WebKitGTK+ vulnerabilities
                             17 November 2017

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

Product:           WebKitGTK+
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-13803 CVE-2017-13802 CVE-2017-13798
                   CVE-2017-13796 CVE-2017-13795 CVE-2017-13794
                   CVE-2017-13793 CVE-2017-13792 CVE-2017-13791
                   CVE-2017-13788 CVE-2017-13785 CVE-2017-13784
                   CVE-2017-13783  

Reference:         ESB-2017.2941
                   ESB-2017.2770
                   ESB-2017.2768

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3481-1

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Ubuntu Security Notice USN-3481-1

16th November, 2017

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
version:

Ubuntu 17.10:
    libwebkit2gtk-4.0-37 2.18.3-0ubuntu0.17.10.1
    libjavascriptcoregtk-4.0-18 2.18.3-0ubuntu0.17.10.1
Ubuntu 17.04:
    libwebkit2gtk-4.0-37 2.18.3-0ubuntu0.17.04.1
    libjavascriptcoregtk-4.0-18 2.18.3-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
    libwebkit2gtk-4.0-37 2.18.3-0ubuntu0.16.04.1
    libjavascriptcoregtk-4.0-18 2.18.3-0ubuntu0.16.04.1

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.

References

CVE-2017-13783, CVE-2017-13784, CVE-2017-13785, CVE-2017-13788, CVE-2017-13791,
CVE-2017-13792, CVE-2017-13793, CVE-2017-13794, CVE-2017-13795, CVE-2017-13796,
CVE-2017-13798, CVE-2017-13802, CVE-2017-13803

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