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AUSCERT External Security Bulletin Redistribution
Drupal project addresses two moderately critical vulnerabilities
19 March 2020
AusCERT Security Bulletin Summary
Product: Drupal core
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Comment: This bulletin contains two (2) Drupal security advisories.
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Drupal core - Moderately critical - Third-party library - SA-CORE-2020-001
Project: Drupal core
Security risk: Moderately critical 13/25
Vulnerability: Third-party library
The Drupal project uses the third-party library CKEditor , which has released a
security improvement that is needed to protect some Drupal configurations.
Vulnerabilities are possible if Drupal is configured to use the WYSIWYG
CKEditor for your site's users. When multiple people can edit content, the
vulnerability can be used to execute XSS attacks against other people,
including site admins with more access.
The latest versions of Drupal update CKEditor to 4.14 to mitigate the
Install the latest version:
o If you are using Drupal 8.8.x, upgrade to Drupal 8.8.4 .
o If you are using Drupal 8.7.x, upgrade to Drupal 8.7.12 .
Versions of Drupal 8 prior to 8.7.x have reached end-of-life and do not receive
The CKEditor module can also be disabled to mitigate the vulnerability until
the site is updated.
Note for Drupal 7 users
Drupal 7 core is not affected by this release; however, users who have
installed the third-party CKEditor library (for example, with a contributed
module) should ensure that the downloaded library is updated to CKEditor 4.14
or higher, or that CDN URLs point to a version of CKEditor 4.14 or higher.
Disabling all WYSIWYG modules can mitigate the vulnerability until the site is
CKEditor - WYSIWYG HTML editor - Moderately critical - Cross site scripting -
Project: CKEditor - WYSIWYG HTML editor
Security risk: Moderately critical
Vulnerability: Cross site scripting
The CKEditor module (and its predecessor, FCKeditor module) allows Drupal to
replace textarea fields with CKEditor 3.x/4.x (FCKeditor 2.x in case of
FCKeditor module) - a visual HTML editor, sometimes called WYSIWYG editor.
admin section, it was possible for a user with permission to create content
visible in the admin area to inject specially crafted malicious script which
causes Cross Site Scripting (XSS).
with the same names.
Install the latest version:
o If you use the CKEditor module for Drupal 7.x, upgrade to CKEditor 7.x-1.19
Also see the CKEditor- WYSIWYG HTML editor project page
o Yonatan Offek
o Robert Mikolajuk
o Greg Knaddison of the Drupal Security Team
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