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.