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Ubuntu Security Notice USN-3781-2

Ubuntu Security Notice USN-3781-2
Posted Oct 10, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3781-2 - USN-3781-1 fixed vulnerabilities in WebKitGTK+. The updated package was missing some header files, preventing certain applications from building. This update fixes the problem. 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. Various other issues were also addressed.

tags | advisory, remote, web, denial of service, arbitrary, javascript, vulnerability, code execution, xss
systems | linux, ubuntu
MD5 | a6bc4a13b0557d357067efa2bbc88f09

Ubuntu Security Notice USN-3781-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3781-2
October 10, 2018

webkit2gtk regression
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

USN-3781-1 introduced a regression in WebKitGTK+.

Software Description:
- webkit2gtk: Web content engine library for GTK+

Details:

USN-3781-1 fixed vulnerabilities in WebKitGTK+. The updated package was
missing some header files, preventing certain applications from building.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory 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 versions:

Ubuntu 18.04 LTS:
libjavascriptcoregtk-4.0-18 2.22.2-0ubuntu0.18.04.2
libwebkit2gtk-4.0-37 2.22.2-0ubuntu0.18.04.2

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:
https://usn.ubuntu.com/usn/usn-3781-2
https://usn.ubuntu.com/usn/usn-3781-1
https://launchpad.net/bugs/1795901

Package Information:
https://launchpad.net/ubuntu/+source/webkit2gtk/2.22.2-0ubuntu0.18.04.2

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