CVE-2023-28439
Published: 22 March 2023
CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered affecting Iframe Dialog and Media Embed packages. The vulnerability may trigger a JavaScript code after fulfilling special conditions: using one of the affected packages on a web page with missing proper Content Security Policy configuration; initializing the editor on an element and using an element other than `<textarea>` as a base; and destroying the editor instance. This vulnerability might affect a small percentage of integrators that depend on dynamic editor initialization/destroy mechanism. A fix is available in CKEditor4 version 4.21.0. In some rare cases, a security fix may be considered a breaking change. Starting from version 4.21.0, the Iframe Dialog plugin applies the `sandbox` attribute by default, which restricts JavaScript code execution in the iframe element. To change this behavior, configure the `config.iframe_attributes` option. Also starting from version 4.21.0, the Media Embed plugin regenerates the entire content of the embed widget by default. To change this behavior, configure the `config.embed_keepOriginalContent` option. Those who choose to enable either of the more permissive options or who cannot upgrade to a patched version should properly configure Content Security Policy to avoid any potential security issues that may arise from embedding iframe elements on their web page.
Notes
Author | Note |
---|---|
sbeattie | embedded copies of ckeditor are in ldap-account-manager, rt4, and rt5 |
Priority
Status
Package | Release | Status |
---|---|---|
ldap-account-manager Launchpad, Ubuntu, Debian |
kinetic |
Ignored
(end of life, was needs-triage)
|
bionic |
Needs triage
|
|
focal |
Needs triage
|
|
jammy |
Needs triage
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
lunar |
Needs triage
|
|
mantic |
Needs triage
|
|
request-tracker4 Launchpad, Ubuntu, Debian |
kinetic |
Ignored
(end of life, was needs-triage)
|
bionic |
Needs triage
|
|
focal |
Needs triage
|
|
jammy |
Needs triage
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
lunar |
Needs triage
|
|
mantic |
Needs triage
|
|
ckeditor Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
jammy |
Needs triage
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
lunar |
Needs triage
|
|
mantic |
Needs triage
|
|
ckeditor3 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
jammy |
Needs triage
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Ignored
(end of standard support)
|
|
lunar |
Needs triage
|
|
mantic |
Needs triage
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.1 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Changed |
Confidentiality | Low |
Integrity impact | Low |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |