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Force the use of secure TLS config

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This change updates the TLS config used by all pinniped components.
There are no configuration knobs associated with this change.  Thus
this change tightens our static defaults.

There are four TLS config levels:

1. Secure (TLS 1.3 only)
2. Default (TLS 1.2+ best ciphers that are well supported)
3. Default LDAP (TLS 1.2+ with less good ciphers)
4. Legacy (currently unused, TLS 1.2+ with all non-broken ciphers)

Highlights per component:

1. pinniped CLI
   - uses "secure" config against KAS
   - uses "default" for all other connections
2. concierge
   - uses "secure" config as an aggregated API server
   - uses "default" config as a impersonation proxy API server
   - uses "secure" config against KAS
   - uses "default" config for JWT authenticater (mostly, see code)
   - no changes to webhook authenticater (see code)
3. supervisor
   - uses "default" config as a server
   - uses "secure" config against KAS
   - uses "default" config against OIDC IDPs
   - uses "default LDAP" config against LDAP IDPs

Signed-off-by: Monis Khan <mok@vmware.com>
This commit is contained in:
Monis Khan
2021-11-17 16:55:35 -05:00
parent c570f08b2b
commit cd686ffdf3
48 changed files with 2431 additions and 317 deletions
Download Patch File Download Diff File Expand all files Collapse all files
internal/concierge/server/server.go
+10 -1
View File
@@ -29,10 +29,12 @@ import (
"go.pinniped.dev/internal/controller/authenticator/authncache"
"go.pinniped.dev/internal/controllerinit"
"go.pinniped.dev/internal/controllermanager"
"go.pinniped.dev/internal/crypto/ptls"
"go.pinniped.dev/internal/downward"
"go.pinniped.dev/internal/dynamiccert"
"go.pinniped.dev/internal/here"
"go.pinniped.dev/internal/issuer"
"go.pinniped.dev/internal/kubeclient"
"go.pinniped.dev/internal/plog"
"go.pinniped.dev/internal/registry/credentialrequest"
)
@@ -209,6 +211,13 @@ func getAggregatedAPIServerConfig(
recommendedOptions.SecureServing.ServerCert.GeneratedCert = dynamicCertProvider
recommendedOptions.SecureServing.BindPort = 8443 // Don't run on default 443 because that requires root
// secure TLS for connections coming from and going to the Kube API server
// this is best effort because not all options provide the right hooks to override TLS config
// since our only client is the Kube API server, this uses the most secure TLS config
if err := ptls.SecureRecommendedOptions(recommendedOptions, kubeclient.Secure); err != nil {
return nil, fmt.Errorf("failed to secure recommended options: %w", err)
}
serverConfig := genericapiserver.NewRecommendedConfig(codecs)
// Note that among other things, this ApplyTo() function copies
// `recommendedOptions.SecureServing.ServerCert.GeneratedCert` into
@@ -220,7 +229,7 @@ func getAggregatedAPIServerConfig(
// If the provider later starts returning certs, then the API server
// will use them to handle the incoming requests successfully.
if err := recommendedOptions.ApplyTo(serverConfig); err != nil {
return nil, err
return nil, fmt.Errorf("failed to apply recommended options: %w", err)
}
apiServerConfig := &apiserver.Config{