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Integer overflow causes dispatching to miss elements or panic

High
jzelinskie published GHSA-h3m7-rqc4-7h9p Mar 1, 2024

Package

gomod github.com/authzed/spicedb (Go)

Affected versions

< 1.29.2

Patched versions

1.29.2

Description

Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem.

The issue may also lead to a panic rendering the server unavailable

The following API methods are affected:

Impact

Permission checks that are expected to be allowed are instead denied, and lookup subjects will return fewer subjects than expected.

Workarounds

There is no workaround other than making sure that the SpiceDB cluster does not have very wide relations, with the maximum value being the maximum value of an 16-bit unsigned integer

Remediations

  • AuthZed Dedicated customers: No action. AuthZed has upgraded all deployments.
  • AuthZed Serverless customers: No Action. AuthZed has upgraded all deployments.
  • AuthZed Enterprise customers: Upgrade to v1.29.2-hotfix-enterprise.v1.hotfix.v1
  • Open Source users: Upgrade to v1.29.2

Severity

High
7.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H

CVE ID

CVE-2024-27101

Weaknesses

No CWEs