cve-2023-28439
Vulnerability from cvelistv5
Published
2023-03-22 20:55
Modified
2025-02-13 16:48
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.
References
security-advisories@github.comhttps://ckeditor.com/cke4/addon/embedProduct
security-advisories@github.comhttps://ckeditor.com/cke4/addon/iframeProduct
security-advisories@github.comhttps://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9gVendor Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWKG2VCPJNETVCDTXU4X6FQ2PO6XCNGN/Mailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4ODGOW6PYVOXHQSMWJBOCE6DXWAI33W/Mailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VCYKD3JZWWA3ESOZG4PHJJEXT4EYIUIQ/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://ckeditor.com/cke4/addon/embedProduct
af854a3a-2127-422b-91ae-364da2661108https://ckeditor.com/cke4/addon/iframeProduct
af854a3a-2127-422b-91ae-364da2661108https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9gVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWKG2VCPJNETVCDTXU4X6FQ2PO6XCNGN/Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4ODGOW6PYVOXHQSMWJBOCE6DXWAI33W/Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VCYKD3JZWWA3ESOZG4PHJJEXT4EYIUIQ/Mailing List
Impacted products
Vendor Product Version
ckeditor ckeditor4 Version: < 4.21.0
Create a notification for this product.
Show details on NVD website


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         dataType: "CVE_RECORD",
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   },
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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