Project: KICS (Provisioning / Security & Compliance)
File: d532566b-8d9d-4f3b-80bd-361fe802f9c2.md

title: Root Container Not Mounted As Read-only hide: toc: true navigation: true <style> .highlight .hll { background-color: #ff171742; } .md-content { max-width: 1100px; margin: 0 auto; } </style> Query id: d532566b-8d9d-4f3b-80bd-361fe802f9c2 Query name: Root Container Not Mounted As Read-only Platform: Terraform Severity: <span style="color:#edd57e">Low</span> Category: Build Process URL: Check if the root container filesystem is not being mounted as read-only.<br> ```tf title="Positive test num. 1 - tf file" hl_lines="44 14 103" resource "kubernetes_pod" "positive1" { metadata { name = "terraform-example" } spec { container = [ { image = "nginx:1.7.9" name = "example22" security_context = { readonlyroot_filesystem = false } 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" } } initialdelayseconds = 3 period_seconds = 3 } } , { image = "nginx:1.7.9" name = "example22222" 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" } } initialdelayseconds = 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 = { allowprivilegeescalation = false } 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" } } initialdelayseconds = 3 period_seconds = 3 } } dns_config { nameservers =

"8.8.8.8", "9.9.9.9"] searches = ["example.com"] option { name = "ndots" value = 1 } option { name = "use-vc" } } dns_policy = "None" } } ``` ```tf title="Negative test num. 1 - tf file" resource "kubernetes_pod" "negative3" { metadata { name = "terraform-example" } spec { container = [ { image = "nginx:1.7.9" name = "example22" security_context = { readonlyroot_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" } } initialdelayseconds = 3 period_seconds = 3 } } , { image = "nginx:1.7.9" name = "example22222" security_context = { readonlyroot_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" } } initialdelayseconds = 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 = { readonlyroot_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" } } initialdelayseconds = 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" } } ```