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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/source-package/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