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Id: terraform-kubernetes-net-raw-capabilities-not-being-dropped
Provider: Kubernetes
Platform: Terraform
Severity: Medium
Category: Insecure Configurations
Learn More Description Containers must set security_context.capabilities.drop to include ALL or, at minimum, NET_RAW. This policy applies to both container and init_container entries and detects missing security_context or capabilities attributes. It flags when capabilities.drop is undefined or does not contain ALL or NET_RAW.
Compliant Code Examples
resource "kubernetes_pod" "negative3" {
metadata {
name = "terraform-example"
}
spec {
container = [
{
image = "nginx:1.7.9"
name = "example"
security_context = {
capabilities = {
drop = [ "ALL" ]
}
}
env = {
name = "environment"
value = "test"
}
port = {
container_port = 8080
}
liveness_probe = {
http_get = {
path = "/nginx_status"
port = 80
http_header = {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
},
{
image = "nginx:1.7.9"
name = "example2"
security_context = {
capabilities = {
drop = [ "ALL" ]
}
}
env = {
name = "environment"
value = "test"
}
port = {
container_port = 8080
}
liveness_probe = {
http_get = {
path = "/nginx_status"
port = 80
http_header = {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
]
dns_config {
nameservers = [ "1.1.1.1" , "8.8.8.8" , "9.9.9.9" ]
searches = [ "example.com" ]
option {
name = "ndots"
value = 1
}
option {
name = "use-vc"
}
}
dns_policy = "None"
}
}
resource "kubernetes_pod" "negative4" {
metadata {
name = "terraform-example"
}
spec {
container {
image = "nginx:1.7.9"
name = "example"
security_context {
capabilities {
drop = [ "ALL" ]
}
}
env {
name = "environment"
value = "test"
}
port {
container_port = 8080
}
liveness_probe {
http_get {
path = "/nginx_status"
port = 80
http_header {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
dns_config {
nameservers = [ "1.1.1.1" , "8.8.8.8" , "9.9.9.9" ]
searches = [ "example.com" ]
option {
name = "ndots"
value = 1
}
option {
name = "use-vc"
}
}
dns_policy = "None"
}
}
Non-Compliant Code Examples
resource "kubernetes_pod" "positive1" {
metadata {
name = "terraform-example"
}
spec {
container = [
{
image = "nginx:1.7.9"
name = "example22"
security_context = {
capabilities = {
drop = [ "NET_BIND_SERVICE" ]
}
}
env = {
name = "environment"
value = "test"
}
port = {
container_port = 8080
}
liveness_probe = {
http_get = {
path = "/nginx_status"
port = 80
http_header = {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
,
{
image = "nginx:1.7.9"
name = "example22222"
security_context = {
read_only_root_filesystem = true
}
env = {
name = "environment"
value = "test"
}
port = {
container_port = 8080
}
liveness_probe = {
http_get = {
path = "/nginx_status"
port = 80
http_header = {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
,
{
image = "nginx:1.7.9"
name = "example3"
env = {
name = "environment"
value = "test"
}
port = {
container_port = 8080
}
liveness_probe = {
http_get = {
path = "/nginx_status"
port = 80
http_header = {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
]
dns_config {
nameservers = [ "1.1.1.1" , "8.8.8.8" , "9.9.9.9" ]
searches = [ "example.com" ]
option {
name = "ndots"
value = 1
}
option {
name = "use-vc"
}
}
dns_policy = "None"
}
}
resource "kubernetes_pod" "positive2" {
metadata {
name = "terraform-example"
}
spec {
container {
image = "nginx:1.7.9"
name = "example"
security_context {
capabilities {
drop = [ "NET_BIND_SERVICE" ]
}
}
env {
name = "environment"
value = "test"
}
port {
container_port = 8080
}
liveness_probe {
http_get {
path = "/nginx_status"
port = 80
http_header {
name = "X-Custom-Header"
value = "Awesome"
}
}
initial_delay_seconds = 3
period_seconds = 3
}
}
dns_config {
nameservers = [ "1.1.1.1" , "8.8.8.8" , "9.9.9.9" ]
searches = [ "example.com" ]
option {
name = "ndots"
value = 1
}
option {
name = "use-vc"
}
}
dns_policy = "None"
}
}
