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authorPawel Wieczorek <p.wieczorek2@samsung.com>2019-09-17 17:09:37 +0200
committerPawel Wieczorek <p.wieczorek2@samsung.com>2019-09-19 15:14:01 +0200
commitd515af5c7bddbbe3bebf3a6288fb3e43b234719a (patch)
tree2a2cc7e5aa9935ade0d10062ebf8d2c454bd6433 /test/security
parenta15076ddf4a07a05e03934939112cf011414d514 (diff)
k8s: Validate API server not excluded authorization mode
This patch verifies if CIS Kubernetes Benchmark v1.3.0 section regarding master node configuration is satisfied (1.1.19). Issue-ID: SECCOM-235 Change-Id: I00c9600fd0d351afb7141a5fa16f348eab67b12d Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>
Diffstat (limited to 'test/security')
-rw-r--r--test/security/k8s/src/check/cmd/check/check.go2
-rw-r--r--test/security/k8s/src/check/validators/master/api.go6
-rw-r--r--test/security/k8s/src/check/validators/master/api_test.go12
3 files changed, 20 insertions, 0 deletions
diff --git a/test/security/k8s/src/check/cmd/check/check.go b/test/security/k8s/src/check/cmd/check/check.go
index a351199b0..c9b34aa42 100644
--- a/test/security/k8s/src/check/cmd/check/check.go
+++ b/test/security/k8s/src/check/cmd/check/check.go
@@ -63,4 +63,6 @@ func main() {
log.Printf("IsEventRateLimitAdmissionControlPluginIncluded: %t\n", master.IsEventRateLimitAdmissionControlPluginIncluded(k8sParams))
log.Printf("IsNamespaceLifecycleAdmissionControlPluginNotExcluded: %t\n", master.IsNamespaceLifecycleAdmissionControlPluginNotExcluded(k8sParams))
+
+ log.Printf("IsAlwaysAllowAuthorizationModeExcluded: %t\n", master.IsAlwaysAllowAuthorizationModeExcluded(k8sParams))
}
diff --git a/test/security/k8s/src/check/validators/master/api.go b/test/security/k8s/src/check/validators/master/api.go
index dc22e35f6..47a2a8e01 100644
--- a/test/security/k8s/src/check/validators/master/api.go
+++ b/test/security/k8s/src/check/validators/master/api.go
@@ -247,3 +247,9 @@ func hasFlagArgumentIncluded(flag string, argument string, params []string) bool
}
return false
}
+
+// IsAlwaysAllowAuthorizationModeExcluded validates AlwaysAllow is excluded from admission control plugins.
+func IsAlwaysAllowAuthorizationModeExcluded(params []string) bool {
+ return isSingleFlagPresent("--authorization-mode=", params) &&
+ !hasFlagArgumentIncluded("--authorization-mode=", "AlwaysAllow", params)
+}
diff --git a/test/security/k8s/src/check/validators/master/api_test.go b/test/security/k8s/src/check/validators/master/api_test.go
index 233662a63..417616295 100644
--- a/test/security/k8s/src/check/validators/master/api_test.go
+++ b/test/security/k8s/src/check/validators/master/api_test.go
@@ -23,6 +23,7 @@ var _ = Describe("Api", func() {
"PersistentVolumeClaimResize,MutatingAdmissionWebhook,ValidatingAdmissionWebhook," +
"ResourceQuota,AlwaysPullImages,DenyEscalatingExec,SecurityContextDeny," +
"PodSecurityPolicy,NodeRestriction,EventRateLimit",
+ "--authorization-mode=RBAC",
}
// kubeApiServerCasablanca was obtained from virtual environment for testing
@@ -315,5 +316,16 @@ var _ = Describe("Api", func() {
Entry("Should not be disabled on Casablanca cluster", kubeApiServerCasablanca, true),
Entry("Should not be disabled on Dublin cluster", kubeApiServerDublin, true),
)
+
+ DescribeTable("AlwaysAllow authorization mode",
+ func(params []string, expected bool) {
+ Expect(IsAlwaysAllowAuthorizationModeExcluded(params)).To(Equal(expected))
+ },
+ Entry("Is not explicitly disabled on insecure cluster", []string{}, false),
+ Entry("Is not absent on insecure cluster", []string{"--authorization-mode=Foo,Bar,AlwaysAllow,Baz,Quuz"}, false),
+ Entry("Is not explicitly disabled on Casablanca cluster", kubeApiServerCasablanca, false),
+ Entry("Should be absent on CIS-compliant cluster", kubeApiServerCISCompliant, true),
+ Entry("Should be absent on Dublin cluster", kubeApiServerDublin, true),
+ )
})
})