CVE-2024-42473: Github.com/openfga/openfga OpenFGA Authorization Bypass Vulnerability

HIGH
Advisory Identifier: GHSA-3f6g-m4hr-59h8
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CVSS 7.5
CWE-285 CWE-863
Published
Advisory Summary

CVE-2024-42473 is a HIGH (CVSS 7.5) openfga authorization bypass vulnerability (CWE-285: Improper Authorization) 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 1.5.9.

CVE-2024-42473 at a Glance

CVE Identifier CVE-2024-42473
GHSA Identifier GHSA-3f6g-m4hr-59h8
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-285: Improper Authorization
Affected Product Github.com/openfga/openfga
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2024-42473

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: 1.5.9 
Upgrade github.com/openfga/openfga to 1.5.9
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-2024-42473, 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 1.5.9), 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-285: Improper Authorization, where the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. 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 OpenFGA v1.5.7 and v1.5.8 are vulnerable to authorization bypass when calling Check API with a model that uses `but not` and `from` expressions and a userset. ## Fix - If you are using OpenFGA within Docker or as a Go library, as a binary, or through Docker, upgrade to v1.5.9 as soon as possible - If using Helm chart, upgrade to 0.2.12 as soon as possible. This fix is backward compatible.

CVE-2024-42473 Affected Github.com/openfga/openfga Versions

1 component(s)
Fixed Versions:
1.5.9
Product / Package Ecosystem Affected Versions Fixed Version
github.com/openfga/openfga
golang/github.com/openfga/openfga
Go
≥ 1.5.7
< 1.5.9
1.5.9

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openfga/openfga/security/advisories/GHSA-3f6g-m4hr-59h8
NVD — CVE-2024-42473 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-42473
Github.com/openfga/openfga Source Repository REPOSITORY
https://github.com/openfga/openfga

Frequently Asked Questions

What is CVE-2024-42473?
CVE-2024-42473 is a security vulnerability in Github.com/openfga/openfga involving OpenFGA Authorization Bypass under CWE-285: Improper Authorization.
Which Github.com/openfga/openfga versions are affected?
Affected versions include releases prior to 1.5.9 across affected packages: github.com/openfga/openfga.
What version fixes CVE-2024-42473?
Upgrading to 1.5.9 (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 1.5.9. Upgrade your dependency to 1.5.9 or later.
What is the CVSS score of CVE-2024-42473?
CVE-2024-42473 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2024-42473?
CVE-2024-42473 is classified under CWE-285: Improper Authorization (The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Go dependencies for CVE-2024-42473?
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-3f6g-m4hr-59h8",
  "modified" : "2024-08-14T17:18:24Z",
  "published" : "2024-08-09T21:23:26Z",
  "aliases" : [ "CVE-2024-42473" ],
  "summary" : "OpenFGA Authorization Bypass",
  "details" : "## Overview\n\nOpenFGA v1.5.7 and v1.5.8 are vulnerable to authorization bypass when calling Check API with a model that uses `but not` and `from` expressions and a userset. \n\n## Fix\n\n- If you are using OpenFGA within Docker or as a Go library, as a binary, or through Docker, upgrade to v1.5.9 as soon as possible\n- If using Helm chart, upgrade to 0.2.12 as soon as possible. \n\nThis fix is backward compatible.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openfga/openfga"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.7"
      }, {
        "fixed" : "1.5.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/security/advisories/GHSA-3f6g-m4hr-59h8"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-42473"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openfga/openfga"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-09T21:23:26Z",
    "nvd_published_at" : "2024-08-12T13:38:35Z"
  }
}