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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
2021-10-20 07:59:24 -04:00
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

15
internal/controller/authenticator/authenticator.go
View File

@@ -9,6 +9,8 @@ import (
"encoding/base64"
"fmt"
"k8s.io/client-go/util/cert"
auth1alpha1 "go.pinniped.dev/generated/latest/apis/concierge/authentication/v1alpha1"
)
@@ -23,19 +25,20 @@ type Closer interface {
// CABundle returns a PEM-encoded CA bundle from the provided spec. If the provided spec is nil, a
// nil CA bundle will be returned. If the provided spec contains a CA bundle that is not properly
// encoded, an error will be returned.
func CABundle(spec *auth1alpha1.TLSSpec) ([]byte, error) {
func CABundle(spec *auth1alpha1.TLSSpec) (*x509.CertPool, []byte, error) {
if spec == nil || len(spec.CertificateAuthorityData) == 0 {
return nil, nil
return nil, nil, nil
}
pem, err := base64.StdEncoding.DecodeString(spec.CertificateAuthorityData)
if err != nil {
return nil, err
return nil, nil, err
}
if ok := x509.NewCertPool().AppendCertsFromPEM(pem); !ok {
return nil, fmt.Errorf("certificateAuthorityData is not valid PEM")
rootCAs, err := cert.NewPoolFromBytes(pem)
if err != nil {
return nil, nil, fmt.Errorf("certificateAuthorityData is not valid PEM: %w", err)
}
return pem, nil
return rootCAs, pem, nil
}