==========================================================================
Ubuntu Security Notice USN-7258-1
February 06, 2025

ckeditor vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in CKEditor.

Software Description:
- ckeditor: Text editor which can be embedded into web pages

Details:

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)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
  ckeditor                        4.22.1+dfsg1-2ubuntu0.24.10.1

Ubuntu 24.04 LTS
  ckeditor 4.22.1+dfsg1-2ubuntu0.24.04.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  ckeditor                        4.16.2+dfsg-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  ckeditor                        4.12.1+dfsg-1ubuntu0.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  ckeditor                        4.5.7+dfsg-2ubuntu0.18.04.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  ckeditor                        4.5.7+dfsg-2ubuntu0.16.04.1~esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7258-1
  CVE-2022-24728, CVE-2023-28439, CVE-2024-24815, CVE-2024-24816,
  CVE-2024-43411

Package Information:
https://launchpad.net/ubuntu/+source/ckeditor/4.22.1+dfsg1-2ubuntu0.24.10.1