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                             CERT-Renater

                 Note d'Information No. 2021/VULN401
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DATE                : 18/08/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Drupal core versions prior to
                                 9.2.4, 9.1.12, 8.9.18.

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https://www.drupal.org/sa-core-2021-005
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Drupal core - Moderately critical - Third-party libraries - SA-CORE-2021-005


Project:         Drupal core
Date:            2021-August-12
Security risk:
Moderately critical 13∕25
AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:Default
Vulnerability:   Third-party libraries


Description:

The Drupal project uses the CKEditor, library for WYSIWYG editing.
CKEditor has released a security update that impacts Drupal.

Vulnerabilities are possible if Drupal is configured to allow use of the
CKEditor library for WYSIWYG editing. An attacker that can create or
edit content (even without access to CKEditor themselves) may be able to
exploit one or more Cross-Site Scripting (XSS) vulnerabilities to target
users with access to the WYSIWYG CKEditor, including site admins with
privileged access.

For more information, see CKEditor's announcement of the release.

This advisory is not covered by Drupal Steward.


Solution:

Install the latest version:

    If you are using Drupal 9.2, update to Drupal 9.2.4.
    If you are using Drupal 9.1, update to Drupal 9.1.12.
    If you are using Drupal 8.9, update to Drupal 8.9.18.

Versions of Drupal 8 prior to 8.9.x and versions of Drupal 9 prior to
9.1.x are end-of-life and do not receive security coverage.

Drupal 7 core is not affected, although Drupal 7, 8, and 9 site owners
should review their site following the protocol for managing external
libraries and plugins previously suggested by the Drupal Security Team,
as contributed projects may use additional CKEditor plugins not packaged
in Drupal core.


Reported By:

    Krzysztof Krzton


Fixed By:

    xjm of the Drupal Security Team
    Jen Lampton
    Wim Leers
    Chris McCafferty of the Drupal Security Team
    James Gilliland of the Drupal Security Team



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+ CERT-RENATER       |    tel : 01-53-94-20-44          +
+ 23/25 Rue Daviel   |    fax : 01-53-94-20-41          +
+ 75013 Paris        |    email:cert@support.renater.fr +
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