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.
References
Configurations
History
21 Nov 2024, 07:55
Type | Values Removed | Values Added |
---|---|---|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.7 |
References | () https://ckeditor.com/cke4/addon/embed - Product | |
References | () https://ckeditor.com/cke4/addon/iframe - Product | |
References | () https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9g - Vendor Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWKG2VCPJNETVCDTXU4X6FQ2PO6XCNGN/ - Mailing List, Third Party Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4ODGOW6PYVOXHQSMWJBOCE6DXWAI33W/ - Mailing List, Third Party Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VCYKD3JZWWA3ESOZG4PHJJEXT4EYIUIQ/ - Mailing List |
18 Jan 2024, 15:11
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4ODGOW6PYVOXHQSMWJBOCE6DXWAI33W/ - Mailing List, Third Party Advisory | |
References | (MISC) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VCYKD3JZWWA3ESOZG4PHJJEXT4EYIUIQ/ - Mailing List | |
References | (MISC) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWKG2VCPJNETVCDTXU4X6FQ2PO6XCNGN/ - Mailing List, Third Party Advisory | |
First Time |
Fedoraproject fedora
Fedoraproject |
|
CPE | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
03 Nov 2023, 21:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
04 Oct 2023, 18:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
|
Summary | 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. |
28 Mar 2023, 18:52
Type | Values Removed | Values Added |
---|---|---|
First Time |
Ckeditor
Ckeditor ckeditor |
|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.1 |
References | (MISC) https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9g - Vendor Advisory | |
References | (MISC) https://ckeditor.com/cke4/addon/embed - Product | |
References | (MISC) https://ckeditor.com/cke4/addon/iframe - Product | |
CPE | cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:* |
22 Mar 2023, 21:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2023-03-22 21:15
Updated : 2024-11-21 07:55
NVD link : CVE-2023-28439
Mitre link : CVE-2023-28439
CVE.ORG link : CVE-2023-28439
JSON object : View
Products Affected
ckeditor
- ckeditor
fedoraproject
- fedora
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')