CVE-2022-24728

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4 prior to version 4.18.0. The vulnerability allows someone to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. This problem has been patched in version 4.18.0. There are currently no known workarounds.

Affected packages

The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4.

Impact

A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.18.0.

Patches

The problem has been recognized and patched. The fix will be available in version 4.18.0.

For more information

Email us at [email protected] if you have any questions or comments about this advisory.

Acknowledgements

The CKEditor 4 team would like to thank GHSL team member Kevin Backhouse (@kevinbackhouse) for recognizing and reporting this vulnerability.

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4 prior to version 4.18.0. The vulnerability allows someone to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. This problem has been patched in version 4.18.0. There are currently no known workarounds.

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4 prior to version 4.18.0. The vulnerability allows someone to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. This problem has been patched in version 4.18.0. There are currently no known workarounds.

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the dialog plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

TuxCare rebuilt ckeditor4 to address 3 CVEs. Fixed in 4.17.1-tuxcare.1.

The Drupal project uses the CKEditor library for WYSIWYG editing. CKEditor has released a security update that impacts Drupal.

Vulnerabilities are possible if Drupal is configured to allow use of the CKEditor library for WYSIWYG editing. An attacker that can create or edit content (even without access to CKEditor themselves) may be able to exploit one or more Cross-Site Scripting (XSS) vulnerabilities to target users with access to the WYSIWYG CKEditor, including site admins with privileged access.

For more information, see CKEditor's security advisories:

• CVE-2022-24728: HTML processing vulnerability allowing to execute JavaScript code
• CVE-2022-24729: Regular expression Denial of Service in dialog plugin

This advisory is not covered by Drupal Steward.

Kevin Backhouse discovered that CKEditor did not properly sanitize HTML content. An attacker could possibly use this issue to perform cross site scripting and obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-24728)

It was discovered that CKEditor did not properly handle the creation of editor instances in the Iframe Dialog and Media Embed packages. An attacker could possibly use this issue to perform cross site scripting and obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-28439)

It was discovered that CKEditor did not properly handle parsing HTML content. An attacker could possibly use this issue to perform cross site scripting and obtain sensitive information. (CVE-2024-24815, CVE-2024-24816)

It was discovered that CKEditor did not properly sanitize version notifications. An attacker could possibly use this issue to perform cross site scripting and obtain sensitive information. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-43411)