Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1qaGc2LTZxcngtMzhtcs4AA_rH

SpiceDB having multiple caveats on resources of the same type may improperly result in no permission

Background

Multiple caveats over the same indirect subject type on the same relation can result in no permission being returned when permission is expected

For example, given this schema:

definition user {}

caveat somecaveat(somefield int) {
  somefield == 42
}

definition group {
  relation member: user
}

definition resource {
  relation viewer: group#member with somecaveat
  permission view = folder->view
}

If the resource has multiple groups, and each group is caveated, it is possible for the returned permission to be "no permission" when permission is expected.

Impact

Permission is returned as NO_PERMISSION when PERMISSION is expected on the CheckPermission API.

Workarounds

Do not use caveats or do not use caveats on an indirect subject type with multiple entries

Permalink: https://github.com/advisories/GHSA-jhg6-6qrx-38mr
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1qaGc2LTZxcngtMzhtcs4AA_rH
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 3 months ago
Updated: about 1 month ago

CVSS Score: 3.7
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Percentage: 0.00043
EPSS Percentile: 0.10511

Identifiers: GHSA-jhg6-6qrx-38mr, CVE-2024-46989
References:

• https://github.com/authzed/spicedb/security/advisories/GHSA-jhg6-6qrx-38mr
• https://github.com/authzed/spicedb/commit/20855de75812bcbc975efebe7f76abf47c0f3edb
• https://nvd.nist.gov/vuln/detail/CVE-2024-46989
• https://github.com/authzed/spicedb/commit/d4ef8e1dbce1eafaf25847f4c0f09738820f5bf2
• https://github.com/advisories/GHSA-jhg6-6qrx-38mr

Repository: https://github.com/authzed/spicedb
Blast Radius: 4.6

Affected Packages