ESB-2018.0301 - [Ubuntu] libjavascriptcoregtk-4.0-18: Multiple vulnerabilities 2018-01-31

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0301
                        WebKitGTK+ vulnerabilities
                              31 January 2018

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

Product:           libjavascriptcoregtk-4.0-18
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-4096 CVE-2018-4088 CVE-2017-13885
                   CVE-2017-13884 CVE-2017-7165 CVE-2017-7161
                   CVE-2017-7160 CVE-2017-7153 

Reference:         ESB-2018.0238
                   ESB-2018.0237
                   ESB-2018.0236

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3551-1

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USN-3551-1: WebKitGTK+ vulnerabilities
Ubuntu Security Notice USN-3551-1

30th January, 2018
webkit2gtk vulnerabilities

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

    Ubuntu 17.10
    Ubuntu 16.04 LTS

Summary

Several security issues were fixed in WebKitGTK+.
Software description

    webkit2gtk - Web content engine library for GTK+

Details

Multiple security issues were discovered in the WebKitGTK+ Web and
JavaScript engines. If a user were tricked in to opening a specially
crafted website, an attacker could potentially exploit these to cause a
denial of service, spoof the user interface, or execute arbitrary code.
(CVE-2018-4088, CVE-2018-4096, CVE-2017-7153, CVE-2017-7160,
CVE-2017-7161, CVE-2017-7165, CVE-2017-13884, CVE-2017-13885)
Update instructions

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

Ubuntu 17.10:
    libwebkit2gtk-4.0-37 2.18.6-0ubuntu0.17.10.1
    libjavascriptcoregtk-4.0-18 2.18.6-0ubuntu0.17.10.1
Ubuntu 16.04 LTS:
    libwebkit2gtk-4.0-37 2.18.6-0ubuntu0.16.04.1
    libjavascriptcoregtk-4.0-18 2.18.6-0ubuntu0.16.04.1

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-2017-13884, CVE-2017-13885, CVE-2017-7153, CVE-2017-7160, CVE-2017-7161, 
CVE-2017-7165, CVE-2018-4088, CVE-2018-4096

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