Xibo: IDOR (Broken Object-Level Authorization) on PUT/DELETE /action/{id} Allows Arbitrary Layout Action Modification and Deletion

Summary

Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.3, missing access-control checks on `PUT/DELETE /action/{id}` allow an authenticated user to modify or delete actions on any Layout. Exploitation requires the privilege to allow edits, including deletion, to all created Layouts, which is granted to non-administrators as standard. This issue concerns `Layout actions` rather than the separately reported DataSet export vulnerability. This issue is fixed in version 4.4.3.

Remediation

1. Inventory every xibosignage xibo-cms deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://github.com/xibosignage/xibo-cms/commit/96d7b458781b8cd10e64788565fbdeffd15f08cf
• Referencehttps://github.com/xibosignage/xibo-cms/commit/efd13abf868e2386f40929ed6e4f36fead310f20
• Referencehttps://github.com/xibosignage/xibo-cms/pull/3492
• Referencehttps://github.com/xibosignage/xibo-cms/releases/tag/4.4.3
• Referencehttps://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta
• Referencehttps://github.com/xibosignage/xibo-cms/security/advisories/GHSA-7j3h-48f7-w4fr