GHSA-7p8f-8hjm-wm92

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GHSA-7p8f-8hjm-wm92

Summary: Lookup operations do not take into account wildcards in SpiceDB

Details: ### Impact Any user making use of a wildcard relationship under the right hand branch of an `exclusion` or within an `intersection` operation will see `Lookup`/`LookupResources` return a resource as "accessible" if it is *not* accessible by virtue of the inclusion of the wildcard in the intersection or the right side of the exclusion. For example, given schema: ```zed definition user {} definition resource { relation viewer: user relation banned: user | user:* permission view = viewer - banned } ``` If `user:*` is placed into the `banned` relation for a particular resource, `view` should return false for *all* resources. in `v1.3.0`, the wildcard is ignored entirely in lookup's dispatch, resulting in the `banned` wildcard being ignored in the exclusion. ### Workarounds Don't make use of wildcards on the right side of intersections or within exclusions. ### References https://github.com/authzed/spicedb/issues/358 ### For more information If you have any questions or comments about this advisory: * Open an issue in [SpiceDB](https://github.com/authzed/spicedb) * Ask a question in the [SpiceDB Discord](https://authzed.com/discord)

References: https://github.com/authzed/spicedb/security/advisories/GHSA-7p8f-8hjm-wm92, https://nvd.nist.gov/vuln/detail/CVE-2022-21646, https://github.com/authzed/spicedb/issues/358, https://github.com/authzed/spicedb/commit/15bba2e2d2a4bda336a37a7fe8ef8a35028cd970, https://github.com/authzed/spicedb, https://github.com/authzed/spicedb/releases/tag/v1.4.0