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             AUSCERT External Security Bulletin Redistribution

                   USN-6490-1: WebKitGTK vulnerabilities
                             21 November 2023


        AusCERT Security Bulletin Summary

Product:           WebKitGTK
Publisher:         Ubuntu
Operating System:  Ubuntu
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-42852 CVE-2023-41983 

Original Bulletin: 

Comment: CVSS (Max):  8.8 CVE-2023-42852 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
         CVSS Source: Ubuntu
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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USN-6490-1: WebKitGTK vulnerabilities

20 November 2023

Several security issues were fixed in WebKitGTK.


  o Ubuntu 23.10
  o Ubuntu 23.04
  o Ubuntu 22.04 LTS


  o webkit2gtk - Web content engine library for GTK+


Several 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

Ubuntu 23.10

  o libjavascriptcoregtk-4.0-18 - 2.42.2-0ubuntu0.23.10.1
  o libjavascriptcoregtk-4.1-0 - 2.42.2-0ubuntu0.23.10.1
  o libjavascriptcoregtk-6.0-1 - 2.42.2-0ubuntu0.23.10.1
  o libwebkit2gtk-4.0-37 - 2.42.2-0ubuntu0.23.10.1
  o libwebkit2gtk-4.1-0 - 2.42.2-0ubuntu0.23.10.1
  o libwebkitgtk-6.0-4 - 2.42.2-0ubuntu0.23.10.1

Ubuntu 23.04

  o libjavascriptcoregtk-4.0-18 - 2.42.2-0ubuntu0.23.04.1
  o libjavascriptcoregtk-4.1-0 - 2.42.2-0ubuntu0.23.04.1
  o libjavascriptcoregtk-6.0-1 - 2.42.2-0ubuntu0.23.04.1
  o libwebkit2gtk-4.0-37 - 2.42.2-0ubuntu0.23.04.1
  o libwebkit2gtk-4.1-0 - 2.42.2-0ubuntu0.23.04.1
  o libwebkitgtk-6.0-4 - 2.42.2-0ubuntu0.23.04.1

Ubuntu 22.04

  o libjavascriptcoregtk-4.0-18 - 2.42.2-0ubuntu0.22.04.1
  o libjavascriptcoregtk-4.1-0 - 2.42.2-0ubuntu0.22.04.1
  o libjavascriptcoregtk-6.0-1 - 2.42.2-0ubuntu0.22.04.1
  o libwebkit2gtk-4.0-37 - 2.42.2-0ubuntu0.22.04.1
  o libwebkit2gtk-4.1-0 - 2.42.2-0ubuntu0.22.04.1
  o libwebkitgtk-6.0-4 - 2.42.2-0ubuntu0.22.04.1
  o libwebkitgtk-6.0-dev - 2.42.2-0ubuntu0.22.04.1

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.


  o CVE-2023-41983
  o CVE-2023-42852

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