Advisory Published

USN-4648-1: WebKitGTK vulnerabilities

First published: Thu Nov 26 2020(Updated: )

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.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libjavascriptcoregtk-4.0-18<2.30.3-0ubuntu0.20.10.1
2.30.3-0ubuntu0.20.10.1
=20.10
All of
ubuntu/libwebkit2gtk-4.0-37<2.30.3-0ubuntu0.20.10.1
2.30.3-0ubuntu0.20.10.1
=20.10
All of
ubuntu/libjavascriptcoregtk-4.0-18<2.30.3-0ubuntu0.20.04.1
2.30.3-0ubuntu0.20.04.1
=20.04
All of
ubuntu/libwebkit2gtk-4.0-37<2.30.3-0ubuntu0.20.04.1
2.30.3-0ubuntu0.20.04.1
=20.04
All of
ubuntu/libjavascriptcoregtk-4.0-18<2.30.3-0ubuntu0.18.04.1
2.30.3-0ubuntu0.18.04.1
=18.04
All of
ubuntu/libwebkit2gtk-4.0-37<2.30.3-0ubuntu0.18.04.1
2.30.3-0ubuntu0.18.04.1
=18.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-4648-1?

    The severity of USN-4648-1 is high.

  • How can a remote attacker exploit the vulnerabilities in USN-4648-1?

    A remote attacker can exploit the vulnerabilities in USN-4648-1 by tricking a user into viewing a malicious website, which can lead to cross-site scripting attacks and denial of service attacks.

  • What is the affected software in USN-4648-1?

    The affected software in USN-4648-1 includes libjavascriptcoregtk-4.0-18 and libwebkit2gtk-4.0-37.

  • What is the recommended remedy for USN-4648-1?

    The recommended remedy for USN-4648-1 is to update the libjavascriptcoregtk-4.0-18 and libwebkit2gtk-4.0-37 packages to version 2.30.3-0ubuntu0.20.10.1 (for Ubuntu 20.10), 2.30.3-0ubuntu0.20.04.1 (for Ubuntu 20.04), or 2.30.3-0ubuntu0.18.04.1 (for Ubuntu 18.04).

  • Where can I find more information about the vulnerabilities in USN-4648-1?

    You can find more information about the vulnerabilities in USN-4648-1 on the Ubuntu website: [link1] [link2] [link3].

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