Argo CD prior 2.3.17/2.4.23/2.5.11/2.6.2 RBAC Configuration authorization

Summaryinfo

A vulnerability categorized as problematic has been discovered in Argo CD. Affected by this vulnerability is an unknown functionality of the component RBAC Configuration. Executing a manipulation can lead to authorization. This vulnerability is registered as CVE-2023-23947. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Argo CD. This vulnerability affects an unknown functionality of the component RBAC Configuration. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. All Argo CD versions starting with 2.3.0-rc1 and prior to 2.3.17, 2.4.23 2.5.11, and 2.6.2 are vulnerable to an improper authorization bug which allows users who have the ability to update at least one cluster secret to update any cluster secret. The attacker could use this access to escalate privileges (potentially controlling Kubernetes resources) or to break Argo CD functionality (by preventing connections to external clusters). A patch for this vulnerability has been released in Argo CD versions 2.6.2, 2.5.11, 2.4.23, and 2.3.17. Two workarounds are available. Either modify the RBAC configuration to completely revoke all `clusters, update` access, or use the `destinations` and `clusterResourceWhitelist` fields to apply similar restrictions as the `namespaces` and `clusterResources` fields.

The weakness was published 02/17/2023 as GHSA-3jfq-742w-xg8j. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-23947 since 01/19/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.3.17, 2.4.23, 2.5.11 or 2.6.2 eliminates this vulnerability. Applying the patch fbb0b99b1ac3361b253052bd30259fa43a520945 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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• Argo CD

License

• open-source

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