CVE-2021-32809

NameCVE-2021-32809
Descriptionckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs992291

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ckeditor (PTS)jessie, jessie (lts)4.4.4+dfsg1-3+deb8u2fixed
stretch (security)4.5.7+dfsg-2+deb9u1vulnerable
stretch (lts), stretch4.5.7+dfsg-2+deb9u2vulnerable
buster4.11.1+dfsg-1vulnerable
bullseye4.16.0+dfsg-2vulnerable
bookworm4.19.1+dfsg-1fixed
sid, trixie4.22.1+dfsg1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ckeditorsourcejessie(not affected)
ckeditorsource(unstable)4.16.2+dfsg-1992291

Notes

[bullseye] - ckeditor <no-dsa> (Minor issue)
[buster] - ckeditor <no-dsa> (Minor issue)
[stretch] - ckeditor <no-dsa> (Minor issue)
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg
https://github.com/ckeditor/ckeditor4/commit/f6856decd5992b2b07945292416bb113d5f7ff82 (v4.16.2)
Introduced by https://github.com/ckeditor/ckeditor4/commit/ca0851c7a14f616a0c4cda905816aa87ca399efb (v4.5.2)
[jessie] - ckeditor <not-affected> (Vulnerable code introduced later)

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