Authentic integration event applied to the wrong tenant or object
A valid provider event is misbound to a local tenant, installation, mode or resource the event is not authorized to modify.
Candidate CWE: CWE-863
Test hypothesis#
Use two controlled provider accounts/installations and local tenants. Deliver valid sandbox events through their normal route and compare trusted account mapping with any user-controlled routing metadata. Inspect a single reversible effect on the other controlled tenant.
Evidence required#
Signature verification result, authenticated provider identity, local mapping, attacker-controlled input, before/after state, and why the event lacks authority for the affected object. A valid signature alone is not the ownership check.
Rule out false positives#
An administrator deliberately sharing one integration across tenants, an intended account-wide event, or a mock event whose meaningful fields the real attacker cannot control is not a demonstrated cross-tenant flaw.
Playbook and command references#
- Webhooks and integration events: authenticity, tenant binding and replay — Verify the event signature, provider-to-tenant binding and durable worker effect together across retries and out-of-order delivery.
- Object, function, and property authorization — Turn identities, tenants, objects, roles, and lifecycle transitions into a reproducible permission matrix.
Find the associated command snippets
Referenced by these target playbooks#
Report checklist#
- Capture the affected version, configuration, identities, and object ownership.
- Preserve a valid baseline and a negative control.
- Reproduce the forbidden data access, action, or state change on controlled fixtures.
- Explain the intended security rule and why the observed behavior violates it.
- State prerequisites, uncertainty, cleanup, and the smallest demonstrated impact.
Conditional ATT&CK mapping#
No direct ATT&CK mapping selected. Record the weakness and demonstrated impact without forcing an adversary-behavior classification. See the mapping guide.