github.com/khulnasoft-lab/defsec@v1.0.5-0.20230827010352-5e9f46893d95/rules/kubernetes/policies/cisbenchmarks/apiserver/deny_service_external_ips_plugin.rego (about)

     1  # METADATA
     2  # title: "Ensure that the --DenyServiceExternalIPs is not set"
     3  # description: "This admission controller rejects all net-new usage of the Service field externalIPs."
     4  # scope: package
     5  # schemas:
     6  # - input: schema["kubernetes"]
     7  # related_resources:
     8  # - https://www.cisecurity.org/benchmark/kubernetes
     9  # custom:
    10  #   id: KCV0003
    11  #   avd_id: AVD-KCV-0003
    12  #   severity: LOW
    13  #   short_code: Ensure-deny-service-external-ips-is-not-set
    14  #   recommended_action: "Edit the API server pod specification file $apiserverconf on the control plane node and remove the `DenyServiceExternalIPs` from enabled admission plugins."
    15  #   input:
    16  #     selector:
    17  #     - type: kubernetes
    18  package builtin.kubernetes.KCV0003
    19  
    20  import data.lib.kubernetes
    21  
    22  check_flag[container] {
    23  	container := kubernetes.containers[_]
    24  	some i
    25  	output := regex.find_all_string_submatch_n(`--enable-admission-plugins=([^\s]+)`, container.command[i], -1)
    26  	regex.match("DenyServiceExternalIPs", output[0][1])
    27  }
    28  
    29  deny[res] {
    30  	output := check_flag[_]
    31  	msg := "Ensure that the --DenyServiceExternalIPs is not set"
    32  	res := result.new(msg, output)
    33  }