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OpenFGA Authorization Bypass

Moderate severity GitHub Reviewed Published Aug 25, 2023 in openfga/openfga • Updated May 10, 2024

Package

gomod github.com/openfga/openfga (Go)

Affected versions

< 1.3.1

Patched versions

1.3.1

Description

Overview

Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. This means that the API sometimes returns more objects than it should.

Am I Affected?

The vulnerability affects customers using ListObjects with specific models. The affected models contain expressions of type rel1 from type1.

Fix

Update to v1.3.1.

Backward Compatibility

This update is backward compatible.

References

@miparnisari miparnisari published to openfga/openfga Aug 25, 2023
Published to the GitHub Advisory Database Aug 25, 2023
Reviewed Aug 25, 2023
Published by the National Vulnerability Database Aug 25, 2023
Last updated May 10, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.064%
(29th percentile)

Weaknesses

CVE ID

CVE-2023-40579

GHSA ID

GHSA-jcf2-mxr2-gmqp

Source code

Credits

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