github.com/khulnasoft-lab/defsec@v1.0.5-0.20230827010352-5e9f46893d95/rules/cloud/policies/google/gke/use_rbac_permissions.go (about)

     1  package gke
     2  
     3  import (
     4  	"github.com/khulnasoft-lab/defsec/internal/rules"
     5  	"github.com/khulnasoft-lab/defsec/pkg/providers"
     6  	"github.com/khulnasoft-lab/defsec/pkg/scan"
     7  	"github.com/khulnasoft-lab/defsec/pkg/severity"
     8  	"github.com/khulnasoft-lab/defsec/pkg/state"
     9  )
    10  
    11  var CheckUseRbacPermissions = rules.Register(
    12  	scan.Rule{
    13  		AVDID:      "AVD-GCP-0062",
    14  		Provider:   providers.GoogleProvider,
    15  		Service:    "gke",
    16  		ShortCode:  "use-rbac-permissions",
    17  		Summary:    "Legacy ABAC permissions are enabled.",
    18  		Impact:     "ABAC permissions are less secure than RBAC permissions",
    19  		Resolution: "Switch to using RBAC permissions",
    20  		Explanation: `You should disable Attribute-Based Access Control (ABAC), and instead use Role-Based Access Control (RBAC) in GKE.
    21  
    22  RBAC has significant security advantages and is now stable in Kubernetes, so it’s time to disable ABAC.`,
    23  		Links: []string{
    24  			"https://cloud.google.com/kubernetes-engine/docs/how-to/hardening-your-cluster#leave_abac_disabled_default_for_110",
    25  		},
    26  		Terraform: &scan.EngineMetadata{
    27  			GoodExamples:        terraformUseRbacPermissionsGoodExamples,
    28  			BadExamples:         terraformUseRbacPermissionsBadExamples,
    29  			Links:               terraformUseRbacPermissionsLinks,
    30  			RemediationMarkdown: terraformUseRbacPermissionsRemediationMarkdown,
    31  		},
    32  		Severity: severity.High,
    33  	},
    34  	func(s *state.State) (results scan.Results) {
    35  		for _, cluster := range s.Google.GKE.Clusters {
    36  			if cluster.Metadata.IsUnmanaged() {
    37  				continue
    38  			}
    39  			if cluster.EnableLegacyABAC.IsTrue() {
    40  				results.Add(
    41  					"Cluster has legacy ABAC enabled.",
    42  					cluster.EnableLegacyABAC,
    43  				)
    44  			} else {
    45  				results.AddPassed(&cluster)
    46  			}
    47  		}
    48  		return
    49  	},
    50  )