CVE-2023-28439

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Summary

CVECVE-2023-28439
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-03-22 21:15:00 UTC
Updated2024-01-18 15:11:00 UTC
DescriptionCKEditor4 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.

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ckeditor Ckeditor All All All All
Operating System Fedoraproject Fedora 37 All All All
Operating System Fedoraproject Fedora 38 All All All
Operating System Fedoraproject Fedora 39 All All All

References

ReferenceSourceLinkTags
Media Embed | CKEditor.com MISC ckeditor.com
IFrame Dialog | CKEditor.com MISC ckeditor.com
[SECURITY] Fedora 38 Update: ckeditor-4.22.1-1.fc38 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
Cross-site scripting (XSS) caused by the editor instance destroying process · Advisory · ckeditor/ckeditor4 · GitHub MISC github.com
[SECURITY] Fedora 39 Update: ckeditor-4.22.1-1.fc39 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
[SECURITY] Fedora 37 Update: ckeditor-4.22.1-1.fc37 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 284572 Fedora Security Update for ckeditor (FEDORA-2023-983ff03630)
  • 284573 Fedora Security Update for ckeditor (FEDORA-2023-79b5902a52)
  • 285239 Fedora Security Update for ckeditor (FEDORA-2023-426b3a500d)
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