CVE-2023-40029

A flaw was found in the ArgoCD package, used by Red Hat GitOps, that allows cluster secrets to be managed declaratively using the kubectl apply functionality, resulting in the full secret body being stored in kubectl.kubernetes.io/last-applied-configuration annotation. Since ArgoCD has included the ability to manage cluster labels and annotations via its API, an attacker can retrieve sensitive authentication information by leveraging this capability, imposing a high impact on data confidentiality and integrity for the targeted ArgoCD cluster. To perform a successful attack, the malicious actor should have clusters, get RBAC access granted to its user.

Mitigation

Update/deploy the cluster secret with theserver-side-apply flag, which does not use or rely on the kubectl.kubernetes.io/last-applied-configuration <http://kubectl.kubernetes.io/last-applied-configuration>; annotation.

Note: Annotation for existing secrets will require manual removal.