CVE-2023-36477

Public Exploit
Persistent Cross-site Scripting (XSS) through CKEditor Configuration pages in XWiki Platform

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with edit rights can edit all pages in the `CKEditor' space. This makes it possible to perform a variety of harmful actions, such as removing technical documents, leading to loss of service and editing the javascript configuration of CKEditor, leading to persistent XSS. This issue has been patched in XWiki 14.10.6 and XWiki 15.1. This issue has been patched on the CKEditor Integration extension 1.64.9 for XWiki version older than 14.6RC1. Users are advised to upgrade. Users unable to upgrade may manually address the issue by restricting the `edit` and `delete` rights to a trusted user or group (e.g. the `XWiki.XWikiAdminGroup` group), implicitly disabling those rights for all other users. See commit `9d9d86179` for details.

Category

9.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 1.82% Top 20%
Vendor Advisory github.com Vendor Advisory xwiki.org Vendor Advisory xwiki.org
Affected: xwiki xwiki-platform
Published at:
Updated at:

References

Link Tags
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-793w-g325-hrw2 patch exploit vendor advisory mitigation
https://github.com/xwiki/xwiki-platform/commit/9d9d86179457cb8dc48b4491510537878800be4f patch
https://jira.xwiki.org/browse/CKEDITOR-508 vendor advisory issue tracking exploit
https://jira.xwiki.org/browse/XWIKI-20590 vendor advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2023-36477?
CVE-2023-36477 has been scored as a critical severity vulnerability.
How to fix CVE-2023-36477?
To fix CVE-2023-36477, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-36477 being actively exploited in the wild?
It is possible that CVE-2023-36477 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-36477?
CVE-2023-36477 affects xwiki xwiki-platform.
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