Vulnerabilities
Misconfiguration
Runtime Security
Compliance
AWS > Eks >

No Public Cluster Access To Cidr

CRITICAL
Source
Trivy/CSPM
CSPM ID
eks-security-groups
ID
AVD-AWS-0041
terraform

EKS cluster should not have open CIDR range for public access

EKS Clusters have public access cidrs set to 0.0.0.0/0 by default which is wide open to the internet. This should be explicitly set to a more specific private CIDR range

Impact

EKS can be accessed from the internet

Follow the appropriate remediation steps below to resolve the issue.

Don’t enable public access to EKS Clusters

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 resource "aws_eks_cluster" "good_example" {
     // other config 
 
     name = "good_example_cluster"
     role_arn = var.cluster_arn
     vpc_config {
         endpoint_public_access = true
         public_access_cidrs = ["10.2.0.0/8"]
     }
 }
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