OpenFGA up to 1.3.1 infinite loop

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OpenFGA up to 1.3.1. This impacts an unknown function. Performing a manipulation results in infinite loop. This vulnerability is identified as CVE-2023-43645. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OpenFGA up to 1.3.1. This affects an unknown functionality. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was released 09/27/2023 as GHSA-2hm9-h873-pgqh. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-43645 since 09/20/2023. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 1.3.2 eliminates this vulnerability. Applying the patch 725296025fd81227c89525808652c6acd4a605f6 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• OpenFGA

Version

• 1.3.0
• 1.3.1

License

• open-source

Website

• Product: https://github.com/openfga/openfga/

CPE 2.3info

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• 🔍

CPE 2.2info

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• 🔍

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