pomerium/authorize/evaluator/functions_test.go
Kenneth Jenkins c95f1695ec
authorize: check CRLs only for leaf certificates (#4480)
Set the Envoy option only_verify_leaf_cert_crl, to avoid a bug where
CRLs cannot be used in combination with an intermediate CA trust root.
Update the client certificate validation logic in the authorize service
to match this behavior.
2023-08-23 09:07:32 -07:00

454 lines
18 KiB
Go

package evaluator
import (
"regexp"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/pomerium/pomerium/config"
)
// These certificates can be regenerated by running:
//
// go run ./gen-test-certs.go
//
// (Copy and paste the output here.)
const (
testCA = `
-----BEGIN CERTIFICATE-----
MIIBaDCCAQ6gAwIBAgICEAAwCgYIKoZIzj0EAwIwGjEYMBYGA1UEAxMPVHJ1c3Rl
ZCBSb290IENBMCAYDzAwMDEwMTAxMDAwMDAwWhcNMzMwODA3MTgwMzIxWjAaMRgw
FgYDVQQDEw9UcnVzdGVkIFJvb3QgQ0EwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNC
AAR2/RkzmSK6paoeTKFx1Bd52ZCg29ulJlMxFdSZT8FlmmaK9mN6KWwO+NHYObiW
y3AQuoSTrZXlrlRW5ANvMI+io0IwQDAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/
BAUwAwEB/zAdBgNVHQ4EFgQUJGFVU2UOvOVgaY9YcCUiunGpiCQwCgYIKoZIzj0E
AwIDSAAwRQIhAMU5/NjpitOSbUobtjeOriPH8JRo9qy1iFyeVNAcdVvgAiAewq2A
PhgzWTw5F9PJg++9i+xGQTqHs3ZirG27cCjvhQ==
-----END CERTIFICATE-----
`
testValidCert = `
-----BEGIN CERTIFICATE-----
MIIBYjCCAQigAwIBAgICEAEwCgYIKoZIzj0EAwIwGjEYMBYGA1UEAxMPVHJ1c3Rl
ZCBSb290IENBMCAYDzAwMDEwMTAxMDAwMDAwWhcNMzMwODA3MTgwMzIxWjAeMRww
GgYDVQQDExN0cnVzdGVkIGNsaWVudCBjZXJ0MFkwEwYHKoZIzj0CAQYIKoZIzj0D
AQcDQgAEcWa1Bz6mpsLnM1VD8gtzELjzjEp9Dopp/xWScFO9qtay5SBOeX+Ftr0O
8+/RkoKHzGgZ80gr6xQyUJL3MCwVZKM4MDYwEwYDVR0lBAwwCgYIKwYBBQUHAwIw
HwYDVR0jBBgwFoAUJGFVU2UOvOVgaY9YcCUiunGpiCQwCgYIKoZIzj0EAwIDSAAw
RQIgXM1ogmy0vcz4lYzji5X3In1n2GLOFNTgucFPkM0GtqgCIQCsXPs/0OjSFyDR
FBqAm1NqDJcxq685fS9t3VfHwapcVA==
-----END CERTIFICATE-----
`
testUntrustedCert = `
-----BEGIN CERTIFICATE-----
MIIBZjCCAQygAwIBAgICEAEwCgYIKoZIzj0EAwIwHDEaMBgGA1UEAxMRVW50cnVz
dGVkIFJvb3QgQ0EwIBgPMDAwMTAxMDEwMDAwMDBaFw0zMzA4MDcxODAzMjFaMCAx
HjAcBgNVBAMTFXVudHJ1c3RlZCBjbGllbnQgY2VydDBZMBMGByqGSM49AgEGCCqG
SM49AwEHA0IABJxEIKqLhhMEm5XZXkT+p+hlC2TFyaW0HIZqoE9navJrAcUB8L2M
mVQ+/wLaCznJHLeSLn46uGH5p1hoGFqOrdajODA2MBMGA1UdJQQMMAoGCCsGAQUF
BwMCMB8GA1UdIwQYMBaAFIp2rlIiSnr33ea3cGyLsX4LEYwWMAoGCCqGSM49BAMC
A0gAMEUCIDtJIZJDcqIYaDXhZFs0nd0nHER8IGP9n4BBFMWewAb2AiEAlQyavOxw
iTQQxt0rXB4Ox5zWpU9q68+F9BGBkQKTsBs=
-----END CERTIFICATE-----
`
testRevokedCert = `
-----BEGIN CERTIFICATE-----
MIIBYjCCAQigAwIBAgICEAIwCgYIKoZIzj0EAwIwGjEYMBYGA1UEAxMPVHJ1c3Rl
ZCBSb290IENBMCAYDzAwMDEwMTAxMDAwMDAwWhcNMzMwODA3MTgwMzIxWjAeMRww
GgYDVQQDExNyZXZva2VkIGNsaWVudCBjZXJ0MFkwEwYHKoZIzj0CAQYIKoZIzj0D
AQcDQgAEcnoO4EM72C7xL31RE9e6m9YJYyF6E4JloASECd8mdiXPlMXIjq8MZHB5
28mFAVQNE7erAtBftID1SbuY4IpXxqM4MDYwEwYDVR0lBAwwCgYIKwYBBQUHAwIw
HwYDVR0jBBgwFoAUJGFVU2UOvOVgaY9YcCUiunGpiCQwCgYIKoZIzj0EAwIDSAAw
RQIgUUETSO064YIu+VKnyRb0yBnNTjXLy3TvGuYgZI8VX0YCIQDd0gyNEC5YLvRN
njxfnLoimp+TzTVzvsCokUbNSNRKJA==
-----END CERTIFICATE-----
`
testCRL = `
-----BEGIN X509 CRL-----
MIHeMIGFAgEBMAoGCCqGSM49BAMCMBoxGDAWBgNVBAMTD1RydXN0ZWQgUm9vdCBD
QRgPMDAwMTAxMDEwMDAwMDBaMBUwEwICEAIXDTIzMDgxMDE4MDMyMVqgMDAuMB8G
A1UdIwQYMBaAFCRhVVNlDrzlYGmPWHAlIrpxqYgkMAsGA1UdFAQEAgIgADAKBggq
hkjOPQQDAgNIADBFAiEAumtTtjiQt1VsbsEnyr+xbpK0KmzKvkpxIVgE1M9CND0C
IA8zx5clcaGIT5xRnBLZW7RwA37IOmB+7zjAuJQpmKKp
-----END X509 CRL-----
`
testIntermediateCA = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`
testValidIntermediateCert = `
-----BEGIN CERTIFICATE-----
MIIBdTCCARqgAwIBAgICEAAwCgYIKoZIzj0EAwIwIjEgMB4GA1UEAxMXVHJ1c3Rl
ZCBJbnRlcm1lZGlhdGUgQ0EwIBgPMDAwMTAxMDEwMDAwMDBaFw0zMzA4MDcxODAz
MjFaMCgxJjAkBgNVBAMTHWNsaWVudCBjZXJ0IGZyb20gaW50ZXJtZWRpYXRlMFkw
EwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE5SVyYjNRuuFXGjEmCcuVtMq7e2bmndPK
bRJ7lJ5cc0kZSoNJes5wXOtGRFbx3+admRHq+w1XEBXOe+yRUB8kdKM4MDYwEwYD
VR0lBAwwCgYIKwYBBQUHAwIwHwYDVR0jBBgwFoAUKRjZnCyzN7x4jgA2Bjw0C/AI
ZMgwCgYIKoZIzj0EAwIDSQAwRgIhAMj0O2wDRLoxGIPUDOmUfYxmxglOecQhSkWO
NBtItSxmAiEAy0XCzvpL6XOZU3zxyCjTdJQa2RiC6YnypMaCaETzCaU=
-----END CERTIFICATE-----
`
testValidCertWithDNSSANs = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`
testValidCertWithEmailSAN = `
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----
`
testValidCertWithIPSAN = `
-----BEGIN CERTIFICATE-----
MIIBbTCCAROgAwIBAgICEAYwCgYIKoZIzj0EAwIwGjEYMBYGA1UEAxMPVHJ1c3Rl
ZCBSb290IENBMCAYDzAwMDEwMTAxMDAwMDAwWhcNMzMwODA3MTgwMzIxWjAYMRYw
FAYDVQQDEw1jbGllbnQgY2VydCA1MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
6+9BE+aomrR2Mdnx4iFY63t0hsVD6rYaHBW1b9roFQX6Cor4YeUfkEEF4LrGeAyb
wcqb6G1ExgNyjEh10Ai1M6NJMEcwEwYDVR0lBAwwCgYIKwYBBQUHAwIwHwYDVR0j
BBgwFoAUJGFVU2UOvOVgaY9YcCUiunGpiCQwDwYDVR0RBAgwBocEwKgKCjAKBggq
hkjOPQQDAgNIADBFAiEA/mq32YZZAacOH/P/wjvfD1n74DD/GkhW4kfS72Z0oGQC
IAQ+L8E78JOLaPWXiL7WFpVrb0hOHkV2m9Qw4GB41mUN
-----END CERTIFICATE-----
`
testValidCertWithURISAN = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`
)
func Test_isValidClientCertificate(t *testing.T) {
t.Parallel()
var noConstraints ClientCertConstraints
t.Run("no ca", func(t *testing.T) {
valid, err := isValidClientCertificate(
"", "", ClientCertificateInfo{Leaf: "WHATEVER!"}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("no cert", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("valid cert", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCert,
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("valid cert with intermediate", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidIntermediateCert,
Intermediates: testIntermediateCA,
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("valid cert missing intermediate", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidIntermediateCert,
Intermediates: "",
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("intermediate CA as root", func(t *testing.T) {
valid, err := isValidClientCertificate(testIntermediateCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidIntermediateCert,
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("unsigned cert", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testUntrustedCert,
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("not a cert", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: "WHATEVER!",
}, noConstraints)
assert.Error(t, err, "should return an error")
assert.False(t, valid, "should return false")
})
t.Run("revoked cert", func(t *testing.T) {
revokedCertInfo := ClientCertificateInfo{
Presented: true,
Leaf: testRevokedCert,
}
// The "revoked cert" should otherwise be valid (when no CRL is specified).
valid, err := isValidClientCertificate(testCA, "", revokedCertInfo, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, testCRL, revokedCertInfo, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
// Specifying a CRL containing the revoked cert should not affect other certs.
valid, err = isValidClientCertificate(testCA, testCRL, ClientCertificateInfo{
Presented: true,
Leaf: testValidCert,
}, noConstraints)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("chain too deep", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidIntermediateCert,
Intermediates: testIntermediateCA,
}, ClientCertConstraints{MaxVerifyDepth: 1})
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("any SAN", func(t *testing.T) {
matchAnySAN := ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile("^.*$"),
config.SANTypeEmail: regexp.MustCompile("^.*$"),
config.SANTypeIPAddress: regexp.MustCompile("^.*$"),
config.SANTypeURI: regexp.MustCompile("^.*$"),
}}
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCert, // no SANs
}, matchAnySAN)
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithDNSSANs,
}, matchAnySAN)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithEmailSAN,
}, matchAnySAN)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithIPSAN,
}, matchAnySAN)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithURISAN,
}, matchAnySAN)
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
})
t.Run("DNS SAN", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithDNSSANs,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile(`^a\..*\.example\.com$`),
}})
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithDNSSANs,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeEmail: regexp.MustCompile(`^a\..*\.example\.com$`), // mismatched type
}})
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("email SAN", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithEmailSAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeEmail: regexp.MustCompile(`^.*@example\.com$`),
}})
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithEmailSAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeIPAddress: regexp.MustCompile(`^.*@example\.com$`), // mismatched type
}})
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("IP address SAN", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithIPSAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeIPAddress: regexp.MustCompile(`^192\.168\.10\..*$`),
}})
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithIPSAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeURI: regexp.MustCompile(`^192\.168\.10\..*$`), // mismatched type
}})
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
t.Run("URI SAN", func(t *testing.T) {
valid, err := isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithURISAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeURI: regexp.MustCompile(`^spiffe://example\.com/.*$`),
}})
assert.NoError(t, err, "should not return an error")
assert.True(t, valid, "should return true")
valid, err = isValidClientCertificate(testCA, "", ClientCertificateInfo{
Presented: true,
Leaf: testValidCertWithURISAN,
}, ClientCertConstraints{SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile(`^spiffe://example\.com/.*$`), // mismatched type
}})
assert.NoError(t, err, "should not return an error")
assert.False(t, valid, "should return false")
})
}
func TestClientCertConstraintsFromConfig(t *testing.T) {
t.Parallel()
t.Run("default constraints", func(t *testing.T) {
var s config.DownstreamMTLSSettings
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{MaxVerifyDepth: 1}, c)
})
t.Run("no constraints", func(t *testing.T) {
s := config.DownstreamMTLSSettings{
MaxVerifyDepth: new(uint32),
}
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{}, c)
})
t.Run("larger max depth", func(t *testing.T) {
depth := uint32(5)
s := config.DownstreamMTLSSettings{
MaxVerifyDepth: &depth,
}
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{MaxVerifyDepth: 5}, c)
})
t.Run("one SAN match", func(t *testing.T) {
s := config.DownstreamMTLSSettings{
MatchSubjectAltNames: []config.SANMatcher{
{Type: config.SANTypeDNS, Pattern: `.*\.corp\.example\.com`},
},
}
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{
MaxVerifyDepth: 1,
SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile(`^(.*\.corp\.example\.com)$`),
},
}, c)
})
t.Run("multiple SAN matches", func(t *testing.T) {
s := config.DownstreamMTLSSettings{
MatchSubjectAltNames: []config.SANMatcher{
{Type: config.SANTypeDNS, Pattern: `.*\.foo\.example\.com`},
{Type: config.SANTypeDNS, Pattern: `.*\.bar\.example\.com`},
},
}
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{
MaxVerifyDepth: 1,
SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile(`^(.*\.foo\.example\.com)|(.*\.bar\.example\.com)$`),
},
}, c)
})
t.Run("multiple SAN matches", func(t *testing.T) {
s := config.DownstreamMTLSSettings{
MatchSubjectAltNames: []config.SANMatcher{
{Type: config.SANTypeDNS, Pattern: `.*\.foo\.example\.com`},
{Type: config.SANTypeEmail, Pattern: `.*@example\.com`},
},
}
c, err := ClientCertConstraintsFromConfig(&s)
assert.NoError(t, err)
assert.Equal(t, &ClientCertConstraints{
MaxVerifyDepth: 1,
SANMatchers: SANMatchers{
config.SANTypeDNS: regexp.MustCompile(`^(.*\.foo\.example\.com)$`),
config.SANTypeEmail: regexp.MustCompile(`^(.*@example\.com)$`),
},
}, c)
})
t.Run("bad SAN match expression", func(t *testing.T) {
s := config.DownstreamMTLSSettings{
MatchSubjectAltNames: []config.SANMatcher{
{Type: config.SANTypeDNS, Pattern: "["},
},
}
_, err := ClientCertConstraintsFromConfig(&s)
require.Error(t, err)
})
}