A ckeditor security update has been released for Debian GNU/Linux 9 LTS.

DLA 2813-1: ckeditor security update

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Debian LTS Advisory DLA-2813-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
November 09, 2021   https://wiki.debian.org/LTS
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Package : ckeditor
Version : 4.5.7+dfsg-2+deb9u1
CVE ID : CVE-2021-33829 CVE-2021-37695
Debian Bug : 992290

CKEditor, an open source WYSIWYG HTML editor with rich content
support, which can be embedded into web pages, had two
vulnerabilites as follows:

CVE-2021-33829

A cross-site scripting (XSS) vulnerability in the HTML Data
Processor in CKEditor 4 allows remote attackers to inject
executable JavaScript code through a crafted comment because
-- ! > is mishandled.

CVE-2021-37695

A potential vulnerability has been discovered in CKEditor 4
Fake Objects package. The vulnerability allowed to inject
malformed Fake Objects HTML, which could result in executing
JavaScript code.

For Debian 9 stretch, these problems have been fixed in version
4.5.7+dfsg-2+deb9u1.

We recommend that you upgrade your ckeditor packages.

For the detailed security status of ckeditor please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/ckeditor

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS