CVE-2023-40579: Github.com/openfga/openfga OpenFGA Authorization Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-jcf2-mxr2-gmqp
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CVSS 6.5
CWE-284
Published
Advisory Summary

CVE-2023-40579 is a MODERATE (CVSS 6.5) openfga authorization bypass vulnerability (CWE-284: Improper Access Control) affecting Github.com/openfga/openfga libraries in the Go ecosystem. The issue involves openfga authorization bypass. Remediation is available by upgrading affected packages to version 1.3.1.

CVE-2023-40579 at a Glance

CVE Identifier CVE-2023-40579
GHSA Identifier GHSA-jcf2-mxr2-gmqp
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-284: Improper Access Control
Affected Product Github.com/openfga/openfga
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-40579

To remediate this vulnerability, upgrade all affected Github.com/openfga/openfga dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/openfga/openfga fixed: 1.3.1 
Upgrade github.com/openfga/openfga to 1.3.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/openfga/openfga

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-40579, inspect your project dependencies for Github.com/openfga/openfga:

inspect dependencies for github.com/openfga/openfga

Analyze the terminal output to locate any version of Github.com/openfga/openfga in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/openfga/openfga, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## 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.

CVE-2023-40579 Affected Github.com/openfga/openfga Versions

1 component(s)
Fixed Versions:
1.3.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/openfga/openfga
golang/github.com/openfga/openfga
Go
< 1.3.1
1.3.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openfga/openfga/security/advisories/GHSA-jcf2-mxr2-gmqp
NVD — CVE-2023-40579 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-40579
Github.com/openfga/openfga Source Repository REPOSITORY
https://github.com/openfga/openfga
Github.com/openfga/openfga Release RELEASE
https://github.com/openfga/openfga/releases/tag/v1.3.1

Frequently Asked Questions

What is CVE-2023-40579?
CVE-2023-40579 is a security vulnerability in Github.com/openfga/openfga involving OpenFGA Authorization Bypass under CWE-284: Improper Access Control.
Which Github.com/openfga/openfga versions are affected?
Affected versions include releases prior to 1.3.1 across affected packages: github.com/openfga/openfga.
What version fixes CVE-2023-40579?
Upgrading to 1.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/openfga/openfga affected?
Yes, github.com/openfga/openfga is affected in releases prior to 1.3.1. Upgrade your dependency to 1.3.1 or later.
What is the CVSS score of CVE-2023-40579?
CVE-2023-40579 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-40579?
CVE-2023-40579 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Go dependencies for CVE-2023-40579?
Run the dependency tree command: 'inspect dependencies for github.com/openfga/openfga'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jcf2-mxr2-gmqp",
  "modified" : "2024-05-10T14:24:57Z",
  "published" : "2023-08-25T19:45:57Z",
  "aliases" : [ "CVE-2023-40579" ],
  "summary" : "OpenFGA Authorization Bypass",
  "details" : "## Overview\nSome 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.\n\n## Am I Affected?\nThe vulnerability affects customers using ListObjects with specific models. The affected models contain expressions of type `rel1 from type1`.\n\n## Fix\nUpdate to v1.3.1.\n\n## Backward Compatibility\nThis update is backward compatible.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openfga/openfga"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/security/advisories/GHSA-jcf2-mxr2-gmqp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-40579"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openfga/openfga"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/releases/tag/v1.3.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-25T19:45:57Z",
    "nvd_published_at" : "2023-08-25T20:15:08Z"
  }
}