| Name | CVE-2021-32808 |
| Description | ckeditor is an open source WYSIWYG HTML editor with rich content support. A vulnerability has been discovered in the clipboard Widget plugin if used alongside the undo feature. The vulnerability allows a user to abuse undo functionality using malformed widget HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version >= 4.13.0. The problem has been recognized and patched. The fix will be available in version 4.16.2. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 992292 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ckeditor (PTS) | buster | 4.11.1+dfsg-1 | fixed |
| bullseye | 4.16.0+dfsg-2 | vulnerable |
| bookworm | 4.19.1+dfsg-1 | fixed |
| trixie, sid | 4.22.1+dfsg1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ckeditor | source | stretch | (not affected) | | | |
| ckeditor | source | buster | (not affected) | | | |
| ckeditor | source | (unstable) | 4.16.2+dfsg-1 | | | 992292 |
Notes
[bullseye] - ckeditor <no-dsa> (Minor issue)
[buster] - ckeditor <not-affected> (Vulnerable code introduced later)
[stretch] - ckeditor <not-affected> (Vulnerable code introduced later)
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c
https://github.com/ckeditor/ckeditor4/commit/0cb59313c834c94cec4c4d4c114b6ecb0270e21a (v4.16.2)
Introduced by https://github.com/ckeditor/ckeditor4/commit/72428a762271d5e54a609a7913356a6d309c895d (v4.13.0)