Use of a Broken or Risky Cryptographic Algorithm

Summary

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. It has been discovered that an unprivileged pod in a different namespace on the same cluster could connect to the Redis server on port "6379". Despite having installed the latest version of the VPC CNI plugin on the EKS cluster, it requires manual enablement through configuration to enforce network policies. This raises concerns that many clients might unknowingly have open access to their Redis servers. This vulnerability could lead to Privilege Escalation to the level of cluster controller, or information leakage, affecting anyone who does not have strict access controls on their Redis instance. This issue affects github.com/argoproj/argo-cd versions through 2.8.18, 2.9.0-rc1 through 2.9.14, 2.10.0-rc1 through 2.10.9, and 2.11.0-rc1 through 2.11.0.