CVE-2023-35933
MediumCVSS 5.9Exploitation Probability (EPSS)
Elevated risk56th percentile - higher than 56% of all known CVEs
Summary
OpenFGA versions v1.1.0 and prior are vulnerable to a DoS attack when Check and ListObjects calls are executed against authorization models that contain circular relationship definitions. Users are affected if they are using these versions and executing these calls on vulnerable models.
Risk Assessment
A DoS attack can lead to unavailability of authorization services, impacting application functionality and potentially causing significant disruptions within the organization.
Recommendation
It is recommended to upgrade to version 1.1.1 of OpenFGA to mitigate this vulnerability. Users without circular relationships in their models are not affected.
Original NVD description (English source)
OPenFGA is an open source authorization/permission engine built for developers. OpenFGA versions v1.1.0 and prior are vulnerable to a DoS attack when Check and ListObjects calls are executed against authorization models that contain circular relationship definitions. Users are affected by this vulnerability if they are using OpenFGA v1.1.0 or earlier, and if you are executing `Check` or `ListObjects` calls against a vulnerable authorization model. Users are advised to upgrade to version 1.1.1. There are no known workarounds for this vulnerability. Users that do not have circular relationships in their models are not affected.