CVE-2021-41165

NameCVE-2021-41165
DescriptionCKEditor4 is an open source WYSIWYG HTML editor. In affected version a vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed comments HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs999909, 1015217

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ckeditor (PTS)bullseye4.16.0+dfsg-2vulnerable
bookworm4.19.1+dfsg-1fixed
sid, trixie4.22.1+dfsg1-2fixed
ckeditor3 (PTS)bookworm, bullseye, sid, trixie3.6.6.1+dfsg-7vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ckeditorsource(unstable)4.19.0+dfsg-1999909
ckeditor3sourcestretch(unfixed)end-of-life
ckeditor3sourcebuster(unfixed)end-of-life
ckeditor3source(unstable)(unfixed)1015217

Notes

[bullseye] - ckeditor <no-dsa> (Minor issue)
[buster] - ckeditor <no-dsa> (Minor issue)
[stretch] - ckeditor <no-dsa> (Minor issue)
[bookworm] - ckeditor3 <no-dsa> (Minor issue)
[bullseye] - ckeditor3 <no-dsa> (Minor issue)
[buster] - ckeditor3 <end-of-life> (No longer supported in LTS)
[stretch] - ckeditor3 <end-of-life> (EOL'd for stretch)
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2 (v4.17.0)

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