In short
- CVE-2024-38361 is a MEDIUM (CVSS 5.3) vulnerability affecting github.com/authzed/spicedb, spicedb (authzed).
- Chance of exploitation in the next 30 days (EPSS): 0.40%, higher than 33.8% of all vulnerabilities.
- Fix: update to 1.33.1 or later.
Description
Background
Use of an exclusion under an arrow that has multiple resources may resolve to NO_PERMISSION when permission is expected.
For example, given this schema:
definition user {}
definition folder {
relation member: user
relation banned: user
permission view = member - banned
}
definition resource {
relation folder: folder
permission view = folder->view
}
If the resource exists under multiple folders and the user has access to view more than a single folder, SpiceDB may report the user does not have access due to a failure in the exclusion dispatcher to request that all the folders in which the user is a member be returned
Impact
Permission is returned as NO_PERMISSION when PERMISSION is expected on the CheckPermission API.
Workarounds
None
NVD description
Spicedb is an Open Source, Google Zanzibar-inspired permissions database to enable fine-grained authorization for customer applications. Use of an exclusion under an arrow that has multiple resources may resolve to `NO_PERMISSION` when permission is expected. If the resource exists under *multiple* folders and the user has access to view more than a single folder, SpiceDB may report the user does not have access due to a failure in the exclusion dispatcher to request that *all* the folders in which the user is a member be returned. Permission is returned as `NO_PERMISSION` when `PERMISSION` is expected on the `CheckPermission` API. This issue has been addressed in version 1.33.1. All users are advised to upgrade. There are no known workarounds for this issue.
More vulnerabilities in github.com/authzed/spicedb
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