USN-3781-2: WebKitGTK+ regression

10 October 2018

webkit2gtk regression

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

  • Ubuntu 18.04 LTS


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

Software Description

  • webkit2gtk - Web content engine library for GTK+


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

To update your system, please follow these instructions:

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.