SpiceDB: LookupSubjects may return partial results if a specific kind of relation is used
### Background Use of a relation of the form: `relation folder: folder | folder#parent` with an arrow such as `folder->view` can cause LookupSubjects to only return the subjects found under subjects for *either* `folder` or `folder#parent`. This bug *only* manifests if the *same* subject type is used multiple types in a relation, relationships exist for both subject types *and* an arrow is used over the relation. ### Impact Any user making a negative authorization decision based on the results of a LookupSubjects request with version before v1.30.1 is affected. ### Workarounds Avoid using LookupSubjects for negative authorization decisions and/or avoid using the broken schema.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-32001US | medium4.3 | — | ||
SpiceDB is a graph database purpose-built for storing and evaluating access control data. Use of a relation of the form: `relation folder: folder | folder#parent` with an arrow suc… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/authzed/spicedbPACKAGE
- https://github.com/authzed/spicedb/commit/a244ed1edfaf2382711dccdb699971ec97190c7bWEB
- https://github.com/authzed/spicedb/releases/tag/v1.30.1WEB
- https://github.com/authzed/spicedb/security/advisories/GHSA-j85q-46hg-36p2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-32001ADVISORY
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