Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3944 Drupal core - Moderately critical - Cross Site Scripting - SA-CORE-2021-011 18 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Drupal core Publisher: Drupal Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade Original Bulletin: https://www.drupal.org/sa-core-2021-011 - --------------------------BEGIN INCLUDED TEXT-------------------- Project:Â Drupal core [1] Date: 2021-November-17 Security risk:Â *Moderately critical* 13/25 AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:Default [2] Vulnerability:Â Cross Site Scripting Description: The Drupal project uses the CKEditor [3] library for WYSIWYG editing. CKEditor has released a security update that impacts Drupal [4]. 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 security advisories: * CVE-2021-41165: HTML comments vulnerability allowing to execute JavaScript code [5] * CVE-2021-41164: Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML [6] This advisory is not covered by Drupal Steward [7]. Solution:Â Install the latest version: * If you are using Drupal 9.2, update to Drupal 9.2.9 [8]. * If you are using Drupal 9.1, update to Drupal 9.1.14 [9]. * If you are using Drupal 8.9, update to Drupal 8.9.20 [10]. Versions of Drupal prior to 9.1.x are end-of-life and do not receive security coverage. Note that Drupal 8 has reached its end of life [11] so this is the final security release provided for Drupal 8. Drupal 7 core does not include the CKEditor module and therefore is not affected. Reported By:Â * Jacek Bogdanski [12] coordinated on the release with Drupal project. * See the CKEditor announcements above for the original reporters of the vulnerabilities. Fixed By:Â * xjm [13] of the Drupal Security Team * Wim Leers [14] * Greg Knaddison [15] of the Drupal Security Team * Lauri Eskola [16] * Ted Bowman [17] [1] https://www.drupal.org/project/drupal [2] https://www.drupal.org/security-team/risk-levels [3] https://github.com/ckeditor/ckeditor4 [4] https://ckeditor.com/cke4/release/CKEditor-4.17.0 [5] https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2 [6] https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj [7] https://www.drupal.org/steward [8] https://www.drupal.org/project/drupal/releases/9.2.9 [9] https://www.drupal.org/project/drupal/releases/9.1.14 [10] https://www.drupal.org/project/drupal/releases/8.9.20 [11] https://www.drupal.org/psa-2021-06-29 [12] https://www.drupal.org/user/3683355 [13] https://www.drupal.org/user/65776 [14] https://www.drupal.org/user/99777 [15] https://www.drupal.org/user/36762 [16] https://www.drupal.org/user/1078742 [17] https://www.drupal.org/user/240860 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYZWqXONLKJtyKPYoAQjkSQ//VbF5kL5Nz4MhGz4DrW/QJtvrXo7TkgjK fl+3UjrHnzHk0pELlM5yPSmI802hGZ6HqWRA9mlMimXMFjr2bkwqUjd2TZ57ufbs niHVAhG4utpBufkKm0DWJzkyLTk7hzPJ51tbpwMI5gfb/I/Cgn9W6gm6Kzanyl8d gxdyP1wv8lQiuS4Prd05cUdX76VuhirqBvw6Lfi2eNVti0BK2LlPE1gdp4h0odSo yqR0CK1w47FCsUsW9p2ZWewxlLCUwWTMVdNZtciHPoqAD2miq60eu7FGSV+z/9Hv xXzFuLL1RYkvCvuOZWUeZePKxTIorPYf6TBfG+oIHeey68zRq7jSqYv4hD73U+y/ 7JZCmyNvPVelBkRqggVsvJ96FwgZu4jHGod8By1+Ha6iWGSVlf5GS7pXM7bDcM49 qIX1wIyqde9vbnLwwlt/1a0zXxg+XmuUeVx7eDVWmlKHeTnr837/+09DYugx6ryE oEI3K2U4iFhrJ/42iO6PMYa4UvZLsueTMBIVkofDAqGvcHuDNemIhkNGKl4uwH2D 0jrkDQ5uekSC39YyyvGikGAuzIrQ5cffJLxUAXE2EEVGbCA5T/7Req9lw3ihJxNB +cexeyBlII6F+U434jfnVqD479pITJm5qkMOLlmlFZzySBMutogFNJS1Zsgdnm6J svt9uravZsU= =1jyf -----END PGP SIGNATURE-----