[USN-4894-1] WebKitGTK vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Mon Mar 29 14:31:22 UTC 2021

Ubuntu Security Notice USN-4894-1
March 29, 2021

webkit2gtk vulnerabilities

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS


Several security issues were fixed in WebKitGTK.

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


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 20.10:
  libjavascriptcoregtk-4.0-18     2.30.6-0ubuntu0.20.10.1
  libwebkit2gtk-4.0-37            2.30.6-0ubuntu0.20.10.1

Ubuntu 20.04 LTS:
  libjavascriptcoregtk-4.0-18     2.30.6-0ubuntu0.20.04.1
  libwebkit2gtk-4.0-37            2.30.6-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  libjavascriptcoregtk-4.0-18     2.30.6-0ubuntu0.18.04.1
  libwebkit2gtk-4.0-37            2.30.6-0ubuntu0.18.04.1

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.

  CVE-2020-27918, CVE-2020-29623, CVE-2021-1765, CVE-2021-1789,
  CVE-2021-1799, CVE-2021-1801, CVE-2021-1870

Package Information:

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