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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.1813
Drupal core - Moderately critical - Cross Site Scripting - SA-CORE-2021-003
                                27 May 2021

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Drupal core
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://www.drupal.org/sa-core-2021-003

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Drupal core - Moderately critical - Cross Site Scripting - SA-CORE-2021-003

Project:       Drupal core

Date:          2021-May-26

Security risk: Moderately critical 
               14/25 AC:Basic/A:User/CI:Some/II:Some/E:Proof/TD:Default

Vulnerability: Cross Site Scripting

Description:

Drupal core uses the third-party CKEditor library. This library has an error in
parsing HTML that could lead to an XSS attack.

Solution:

Install the latest version:

  o If you are using Drupal 9.1, update to Drupal 9.1.9 .
  o If you are using Drupal 9.0, update to Drupal 9.0.14 .
  o If you are using Drupal 8.9, update to Drupal 8.9.16 .

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

Reported By:

  o Or Sahar

Fixed By:

  o Greg Knaddison of the Drupal Security Team
  o Jess of the Drupal Security Team
  o Krzysztof Krzton
  o Lee Rowlands of the Drupal Security Team
  o Michael Hess of the Drupal Security Team

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===========================================================================
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