PT-2021-21815 · Unknown+3 · Ckeditor 4+3

Victor Rodriguez · Published 2021-08-12 · Updated 2022-03-23 · CVE-2021-37695

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions CKEditor 4 versions prior to 4.16.2

Description A potential vulnerability has been discovered in the CKEditor 4 [Fake Objects] package, allowing the injection of malformed Fake Objects HTML, which could result in executing JavaScript code. This issue affects all users using the CKEditor 4 plugins listed, including [Fake Objects], [Link], [Flash], [Iframe], [Forms], and [Page Break], at versions prior to 4.16.2.

Recommendations For CKEditor 4 versions prior to 4.16.2, update to version 4.16.2 to resolve the issue. As a temporary workaround, consider disabling the use of the [Fake Objects] plugin until the patch is applied. Restrict access to the affected plugins to minimize the risk of exploitation. Avoid using the affected plugins in the CKEditor 4 package until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-37695

DLA-2813-1

GHSA-M94C-37G6-CJHC

USN-5340-1

USN-5340-2

Affected Products

Ckeditor 4

Debian

Linuxmint

Ubuntu

References · 31

• https://github.com/ckeditor/ckeditor4/commit/de3c001540715f9c3801aaa38a1917de46cfcf58 · Patch
• https://osv.dev/vulnerability/DLA-2813-1 · Vendor Advisory
• https://oracle.com/security-alerts/cpujan2022.html · Patch
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5340-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-37695 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5340-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33829 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-37695 · Security Note
• https://oracle.com/security-alerts/cpuoct2021.html · Patch
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-37695 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-m94c-37g6-cjhc · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-9861 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T · Vendor Advisory