Vulnerability Description
OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA is vulnerable to a denial of service attack when certain Check calls are executed against authorization models that contain circular relationship definitions. When the call is made, it's possible for the server to exhaust resources and die. Users are advised to upgrade to v1.3.2 and update any offending models. There are no known workarounds for this vulnerability. Note that for models which contained cycles or a relation definition that has the relation itself in its evaluation path, checks and queries that require evaluation will no longer be evaluated on v1.3.2+ and will return errors instead. Users who do not have cyclic models are unaffected.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openfga | Openfga | < 1.3.2 |
Related Weaknesses (CWE)
References
- https://github.com/openfga/openfga/commit/725296025fd81227c89525808652c6acd4a605Patch
- https://github.com/openfga/openfga/security/advisories/GHSA-2hm9-h873-pgqhVendor Advisory
- https://github.com/openfga/openfga/commit/725296025fd81227c89525808652c6acd4a605Patch
- https://github.com/openfga/openfga/security/advisories/GHSA-2hm9-h873-pgqhVendor Advisory
FAQ
What is CVE-2023-43645?
CVE-2023-43645 is a vulnerability with a CVSS score of 5.9 (MEDIUM). OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA is vulnerable to a denial of service attack when certain Check calls are executed against au...
How severe is CVE-2023-43645?
CVE-2023-43645 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-43645?
Check the references section above for vendor advisories and patch information. Affected products include: Openfga Openfga.