RCE in Ckeditor
CVE-2021-32809
ckeditor 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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.012 (67.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Ckeditor
- Ckeditor Ckeditor4 — versions >= 4.5.2, < 4.16.2
- Oracle Application Express
- Oracle Banking Party Management — versions 2.7.0
- Oracle Commerce Guided Search — versions 11.3.2
- Oracle Commerce Merchandising — versions 11.3.2
- Oracle Documaker — versions 12.6.3, 12.6.4
- Oracle Financial Services Analytical Applications Infrastructure
- Oracle Jd Edwards Enterpriseone Tools
- Oracle Peoplesoft Enterprise Peopletools — versions 8.57, 8.58, 8.59
Weakness classification (CWE)
References
- github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2022.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32809?
- CVE-2021-32809 is a medium-severity vulnerability in Ckeditor, classified under Code Injection. CVSS score: 4.6/10. Published 2021-08-12.
- How severe is CVE-2021-32809?
- Medium severity. CVSS v3 base score is 4.6 out of 10.