From 1951669e13348e2634ad5772abd982cda03f3015 Mon Sep 17 00:00:00 2001 From: max furman Date: Tue, 23 Jun 2020 11:10:45 -0700 Subject: [PATCH] wip --- acme/order.go | 10 +++++ authority/provisioner/aws.go | 2 + authority/provisioner/azure.go | 3 ++ authority/provisioner/gcp.go | 3 ++ authority/provisioner/jwk.go | 9 +---- authority/provisioner/sign_options.go | 45 ++++++++++++++++++++++ authority/provisioner/sign_options_test.go | 36 +++++++++++++++++ authority/provisioner/x5c.go | 10 +---- authority/tls.go | 4 +- ca/client.go | 6 ++- go.mod | 3 +- go.sum | 11 ++++++ 12 files changed, 122 insertions(+), 20 deletions(-) diff --git a/acme/order.go b/acme/order.go index e3fd6d8f..8642c6d1 100644 --- a/acme/order.go +++ b/acme/order.go @@ -308,6 +308,16 @@ func (o *order) finalize(db nosql.DB, csr *x509.CertificateRequest, auth SignAut } } + if len(csr.IPAddresses) > 0 { + return nil, BadCSRErr(errors.Errorf("CSR contains IP Address SANs, but should only contain DNS Names")) + } + if len(csr.EmailAddresses) > 0 { + return nil, BadCSRErr(errors.Errorf("CSR contains Email Address SANs, but should only contain DNS Names")) + } + if len(csr.URIs) > 0 { + return nil, BadCSRErr(errors.Errorf("CSR contains URI SANs, but should only contain DNS Names")) + } + // Get authorizations from the ACME provisioner. ctx := provisioner.NewContextWithMethod(context.Background(), provisioner.SignMethod) signOps, err := p.AuthorizeSign(ctx, "") diff --git a/authority/provisioner/aws.go b/authority/provisioner/aws.go index 3f2c8873..e426564f 100644 --- a/authority/provisioner/aws.go +++ b/authority/provisioner/aws.go @@ -287,6 +287,8 @@ func (p *AWS) AuthorizeSign(ctx context.Context, token string) ([]SignOption, er so = append(so, ipAddressesValidator([]net.IP{ net.ParseIP(doc.PrivateIP), })) + so = append(so, emailAddressesValidator(nil)) + so = append(so, urisValidator(nil)) } return append(so, diff --git a/authority/provisioner/azure.go b/authority/provisioner/azure.go index cd1b1b83..8580eced 100644 --- a/authority/provisioner/azure.go +++ b/authority/provisioner/azure.go @@ -284,6 +284,9 @@ func (p *Azure) AuthorizeSign(ctx context.Context, token string) ([]SignOption, // name will work only inside the virtual network so = append(so, commonNameValidator(name)) so = append(so, dnsNamesValidator([]string{name})) + so = append(so, ipAddressesValidator(nil)) + so = append(so, emailAddressesValidator(nil)) + so = append(so, urisValidator(nil)) } return append(so, diff --git a/authority/provisioner/gcp.go b/authority/provisioner/gcp.go index 28c7f51e..507eea1b 100644 --- a/authority/provisioner/gcp.go +++ b/authority/provisioner/gcp.go @@ -228,6 +228,9 @@ func (p *GCP) AuthorizeSign(ctx context.Context, token string) ([]SignOption, er so = append(so, dnsNamesValidator([]string{ dnsName1, dnsName2, })) + so = append(so, ipAddressesValidator(nil)) + so = append(so, emailAddressesValidator(nil)) + so = append(so, urisValidator(nil)) } return append(so, diff --git a/authority/provisioner/jwk.go b/authority/provisioner/jwk.go index 57297f78..2d2d577e 100644 --- a/authority/provisioner/jwk.go +++ b/authority/provisioner/jwk.go @@ -8,7 +8,6 @@ import ( "github.com/pkg/errors" "github.com/smallstep/certificates/errs" - "github.com/smallstep/cli/crypto/x509util" "github.com/smallstep/cli/jose" ) @@ -152,19 +151,15 @@ func (p *JWK) AuthorizeSign(ctx context.Context, token string) ([]SignOption, er claims.SANs = []string{claims.Subject} } - dnsNames, ips, emails := x509util.SplitSANs(claims.SANs) - return []SignOption{ + return append([]SignOption{ // modifiers / withOptions newProvisionerExtensionOption(TypeJWK, p.Name, p.Key.KeyID), profileDefaultDuration(p.claimer.DefaultTLSCertDuration()), // validators commonNameValidator(claims.Subject), defaultPublicKeyValidator{}, - dnsNamesValidator(dnsNames), - emailAddressesValidator(emails), - ipAddressesValidator(ips), newValidityValidator(p.claimer.MinTLSCertDuration(), p.claimer.MaxTLSCertDuration()), - }, nil + }, sansValidators(claims.SANs)), nil } // AuthorizeRenew returns an error if the renewal is disabled. diff --git a/authority/provisioner/sign_options.go b/authority/provisioner/sign_options.go index 55ed9d3a..d8ac3ab0 100644 --- a/authority/provisioner/sign_options.go +++ b/authority/provisioner/sign_options.go @@ -7,6 +7,7 @@ import ( "crypto/x509/pkix" "encoding/asn1" "net" + "net/url" "reflect" "time" @@ -195,6 +196,50 @@ func (v emailAddressesValidator) Valid(req *x509.CertificateRequest) error { return nil } +// urisValidator validates the URI SANs of a certificate request. +type urisValidator []*url.URL + +// Valid checks that certificate request IP Addresses match those configured in +// the bootstrap (token) flow. +func (v urisValidator) Valid(req *x509.CertificateRequest) error { + want := make(map[string]bool) + for _, u := range v { + want[u.String()] = true + } + got := make(map[string]bool) + for _, u := range req.URIs { + got[u.String()] = true + } + if !reflect.DeepEqual(want, got) { + return errors.Errorf("URIs claim failed - got %v, want %v", req.URIs, v) + } + return nil +} + +func sansValidators(sans []string) []SignOption { + dnsNames, ips, emails, uris := x509util.SplitSANs(sans) + return []SignOption{dnsNamesValidator(dnsNames), emailAddressesValidator(emails), + ipAddressesValidator(ips), urisValidator(uris)} +} + +// ExtraExtensionsEnforcer enforces only those extra extensions that are strictly +// managed by step-ca. All other "extra extensions" are dropped. +type ExtraExtensionsEnforcer struct{} + +// Enforce removes all extensions except the step provisioner extension, if it +// exists. If the step provisioner extension is not present, then remove all +// extra extensions from the cert. +func (eee ExtraExtensionsEnforcer) Enforce(cert *x509.Certificate) error { + for _, ext := range cert.Extensions { + if ext.Id.Equal(stepOIDProvisioner) { + cert.ExtraExtensions = []pkix.Extension{ext} + return nil + } + } + cert.ExtraExtensions = nil + return nil +} + // profileDefaultDuration is a wrapper against x509util.WithOption to conform // the SignOption interface. type profileDefaultDuration time.Duration diff --git a/authority/provisioner/sign_options_test.go b/authority/provisioner/sign_options_test.go index 829dbbba..6a8d3069 100644 --- a/authority/provisioner/sign_options_test.go +++ b/authority/provisioner/sign_options_test.go @@ -246,6 +246,42 @@ func Test_ipAddressesValidator_Valid(t *testing.T) { } } +func Test_urisValidator_Valid(t *testing.T) { + u1, err := url.Parse("https://ca.smallstep.com") + assert.FatalError(t, err) + u2, err := url.Parse("https://google.com/index.html") + assert.FatalError(t, err) + u3, err := url.Parse("https://foo.bar.baz") + assert.FatalError(t, err) + fu, err := url.Parse("https://unexpected.com") + assert.FatalError(t, err) + + type args struct { + req *x509.CertificateRequest + } + tests := []struct { + name string + v urisValidator + args args + wantErr bool + }{ + {"ok0", []*url.URL{}, args{&x509.CertificateRequest{URIs: []*url.URL{}}}, false}, + {"ok1", []*url.URL{u1}, args{&x509.CertificateRequest{URIs: []*url.URL{u1}}}, false}, + {"ok2", []*url.URL{u1, u2}, args{&x509.CertificateRequest{URIs: []*url.URL{u2, u1}}}, false}, + {"ok3", []*url.URL{u2, u1, u3}, args{&x509.CertificateRequest{URIs: []*url.URL{u3, u2, u1}}}, false}, + {"fail1", []*url.URL{u1}, args{&x509.CertificateRequest{URIs: []*url.URL{u2}}}, true}, + {"fail2", []*url.URL{u1}, args{&x509.CertificateRequest{URIs: []*url.URL{u2, u1}}}, true}, + {"fail3", []*url.URL{u1, u2}, args{&x509.CertificateRequest{URIs: []*url.URL{u1, fu}}}, true}, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + if err := tt.v.Valid(tt.args.req); (err != nil) != tt.wantErr { + t.Errorf("urisValidator.Valid() error = %v, wantErr %v", err, tt.wantErr) + } + }) + } +} + func Test_validityValidator_Valid(t *testing.T) { type test struct { cert *x509.Certificate diff --git a/authority/provisioner/x5c.go b/authority/provisioner/x5c.go index c174aa3f..b8a32206 100644 --- a/authority/provisioner/x5c.go +++ b/authority/provisioner/x5c.go @@ -9,7 +9,6 @@ import ( "github.com/pkg/errors" "github.com/smallstep/certificates/errs" - "github.com/smallstep/cli/crypto/x509util" "github.com/smallstep/cli/jose" ) @@ -194,9 +193,7 @@ func (p *X5C) AuthorizeSign(ctx context.Context, token string) ([]SignOption, er claims.SANs = []string{claims.Subject} } - dnsNames, ips, emails := x509util.SplitSANs(claims.SANs) - - return []SignOption{ + return append([]SignOption{ // modifiers / withOptions newProvisionerExtensionOption(TypeX5C, p.Name, ""), profileLimitDuration{p.claimer.DefaultTLSCertDuration(), @@ -204,11 +201,8 @@ func (p *X5C) AuthorizeSign(ctx context.Context, token string) ([]SignOption, er // validators commonNameValidator(claims.Subject), defaultPublicKeyValidator{}, - dnsNamesValidator(dnsNames), - emailAddressesValidator(emails), - ipAddressesValidator(ips), newValidityValidator(p.claimer.MinTLSCertDuration(), p.claimer.MaxTLSCertDuration()), - }, nil + }, sansValidators(claims.SANs)), nil } // AuthorizeRenew returns an error if the renewal is disabled. diff --git a/authority/tls.go b/authority/tls.go index dbfbf96a..ebe25911 100644 --- a/authority/tls.go +++ b/authority/tls.go @@ -103,8 +103,8 @@ func (a *Authority) Sign(csr *x509.CertificateRequest, signOpts provisioner.Opti } } - // Certificate modifier after validation - for _, m := range forcedModifiers { + // Certificate modifiers after validation + for _, m := range append(forcedModifiers, provisioner.ExtraExtensionsEnforcer{}) { if err := m.Enforce(leaf.Subject()); err != nil { return nil, errs.Wrap(http.StatusUnauthorized, err, "authority.Sign", opts...) } diff --git a/ca/client.go b/ca/client.go index ce936655..370126d6 100644 --- a/ca/client.go +++ b/ca/client.go @@ -1066,7 +1066,7 @@ func CreateSignRequest(ott string) (*api.SignRequest, crypto.PrivateKey, error) return nil, nil, errors.Wrap(err, "error generating key") } - dnsNames, ips, emails := x509util.SplitSANs(claims.SANs) + dnsNames, ips, emails, uris := x509util.SplitSANs(claims.SANs) if claims.Email != "" { emails = append(emails, claims.Email) } @@ -1079,6 +1079,7 @@ func CreateSignRequest(ott string) (*api.SignRequest, crypto.PrivateKey, error) DNSNames: dnsNames, IPAddresses: ips, EmailAddresses: emails, + URIs: uris, } csr, err := x509.CreateCertificateRequest(rand.Reader, template, pk) @@ -1137,7 +1138,7 @@ func createCertificateRequest(commonName string, sans []string, key crypto.Priva if len(sans) == 0 { sans = []string{commonName} } - dnsNames, ips, emails := x509util.SplitSANs(sans) + dnsNames, ips, emails, uris := x509util.SplitSANs(sans) template := &x509.CertificateRequest{ Subject: pkix.Name{ CommonName: commonName, @@ -1145,6 +1146,7 @@ func createCertificateRequest(commonName string, sans []string, key crypto.Priva DNSNames: dnsNames, IPAddresses: ips, EmailAddresses: emails, + URIs: uris, } csr, err := x509.CreateCertificateRequest(rand.Reader, template, key) if err != nil { diff --git a/go.mod b/go.mod index 49f6c511..eec2babc 100644 --- a/go.mod +++ b/go.mod @@ -27,5 +27,6 @@ require ( gopkg.in/square/go-jose.v2 v2.4.0 ) -//replace github.com/smallstep/cli => ../cli +replace github.com/smallstep/cli => ../cli + //replace github.com/smallstep/nosql => ../nosql diff --git a/go.sum b/go.sum index 1bd57d61..80a44d6b 100644 --- a/go.sum +++ b/go.sum @@ -21,12 +21,16 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM= github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo= +github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2oc2f4tzPWic= github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg= github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU= +github.com/Masterminds/semver v1.4.2 h1:WBLTQ37jOCzSLtXNdoo8bNM8876KhNqOKvrlGITgsTc= +github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y= github.com/Masterminds/semver/v3 v3.0.1 h1:2kKm5lb7dKVrt5TYUiAavE6oFc1cFT0057UVGT+JqLk= github.com/Masterminds/semver/v3 v3.0.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs= github.com/Masterminds/sprig/v3 v3.0.0 h1:KSQz7Nb08/3VU9E4ns29dDxcczhOD1q7O1UfM4G3t3g= github.com/Masterminds/sprig/v3 v3.0.0/go.mod h1:NEUY/Qq8Gdm2xgYA+NwJM6wmfdRV9xkh8h/Rld20R0U= +github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA= github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU= github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA= github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE= @@ -55,6 +59,7 @@ github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQ github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= github.com/bombsimon/wsl/v2 v2.0.0 h1:+Vjcn+/T5lSrO8Bjzhk4v14Un/2UyCA1E3V5j9nwTkQ= github.com/bombsimon/wsl/v2 v2.0.0/go.mod h1:mf25kr/SqFEPhhcxW1+7pxzGlW+hIl/hYTKY95VwV8U= +github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8= github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko= @@ -68,6 +73,7 @@ github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5P github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWsoZXJNW3xEE4JJyHa5Q25/sd8= github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU= github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/codegangsta/cli v1.20.0/go.mod h1:/qJNoX69yVSKu5o4jLyXAENLRyk1uhi7zkbQ3slBdOA= github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= github.com/coreos/bbolt v1.3.3 h1:n6AiVyVRKQFNb6mJlwESEvvLoDyiTzXX7ORAUlkeBdY= github.com/coreos/bbolt v1.3.3/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= @@ -83,6 +89,7 @@ github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg= github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA= +github.com/corpix/uarand v0.1.1/go.mod h1:SFKZvkcRoLqVRFZ4u25xPmp6m9ktANfbpXZ7SJ0/FNU= github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk= github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU= @@ -273,6 +280,7 @@ github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI= github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA= github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM= github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8= +github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI= github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af h1:pmfjZENx5imkbgOkpRUYLnmbU7UEFbjtDA2hxJ1ichM= github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k= github.com/jmespath/go-jmespath v0.3.0 h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc= @@ -290,6 +298,7 @@ github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a h1:FaWFmfWdAUKbSCtOU github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a/go.mod h1:UJSiEoRfvx3hP73CvoARgeLjaIOjybY9vj8PUPPFGeU= github.com/juju/ratelimit v1.0.1/go.mod h1:qapgC/Gy+xNh9UxzV13HGGl/6UXNN+ct+vwSgWNm/qk= github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w= +github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8= github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q= github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00= github.com/kisielk/gotool v0.0.0-20161130080628-0de1eaf82fa3/go.mod h1:jxZFDH7ILpTPQTk+E2s+z4CUas9lVNjIuKR4c5/zKgM= @@ -372,6 +381,7 @@ github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d h1:AREM5mwr4u1 github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d/go.mod h1:o96djdrsSGy3AWPyBgZMAGfxZNfgntdJG+11KU4QvbU= github.com/newrelic/go-agent v2.15.0+incompatible h1:IB0Fy+dClpBq9aEoIrLyQXzU34JyI1xVTanPLB/+jvU= github.com/newrelic/go-agent v2.15.0+incompatible/go.mod h1:a8Fv1b/fYhFSReoTU6HDkTYIMZeSVNffmoS726Y0LzQ= +github.com/ngdinhtoan/glide-cleanup v0.2.0/go.mod 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