From 6002ed3d46048199b2ff7876d0124534f6667921 Mon Sep 17 00:00:00 2001 From: ItalyPaleAle <43508+ItalyPaleAle@users.noreply.github.com> Date: Thu, 5 Dec 2024 05:10:30 +0000 Subject: [PATCH] Microsoft connector: add support for Federated Identity to avoid secrets Fixes #3852 Maintaining shared secrets in the application's configuration is not good, and should be avoided as possible. This includes the client secret used by the Microsoft connector to exchange authorization codes for access tokens using Entra ID (fka Azure AD). It is possible to avoid using secrets by leveraging a [signed assertion](https://learn.microsoft.com/en-us/entra/identity-platform/v2-oauth2-auth-code-flow#request-an-access-token-with-a-certificate-credential), which comes from managed identity (when the app is running on Azure) or [Workload Identity](https://learn.microsoft.com/en-us/entra/workload-id/workload-identity-federation) (when the app is running on a supported platform, including K8s anywhere). This is configured with a new configuration key `federatedIdentity` which can have 3 values (all case-insensitive): - `ManagedIdentity` -> Uses a system-assigned managed identity - `ManagedIdentity=00000000-0000-0000-0000-000000000000` -> Uses a user-assigned managed identity, where the value is the client ID of the MI - `WorkloadIdentity` -> uses Workload Identity Signed-off-by: ItalyPaleAle <43508+ItalyPaleAle@users.noreply.github.com> --- connector/microsoft/microsoft.go | 67 +++++++++++++++++++++++++++++++- go.mod | 6 +++ go.sum | 27 ++++++++++++- 3 files changed, 96 insertions(+), 4 deletions(-) diff --git a/connector/microsoft/microsoft.go b/connector/microsoft/microsoft.go index 2fcf6a7515..ec2a0c2c04 100644 --- a/connector/microsoft/microsoft.go +++ b/connector/microsoft/microsoft.go @@ -14,6 +14,9 @@ import ( "sync" "time" + "github.com/Azure/azure-sdk-for-go/sdk/azcore" + "github.com/Azure/azure-sdk-for-go/sdk/azcore/policy" + "github.com/Azure/azure-sdk-for-go/sdk/azidentity" "golang.org/x/oauth2" "github.com/dexidp/dex/connector" @@ -46,6 +49,7 @@ const ( type Config struct { ClientID string `json:"clientID"` ClientSecret string `json:"clientSecret"` + FederatedIdentity string `json:"federatedIdentity"` RedirectURI string `json:"redirectURI"` Tenant string `json:"tenant"` OnlySecurityGroups bool `json:"onlySecurityGroups"` @@ -108,6 +112,15 @@ func (c *Config) Open(id string, logger *slog.Logger) (connector.Connector, erro return nil, fmt.Errorf("invalid groupNameFormat: %s", m.groupNameFormat) } + // Init Federated Identity Credentials if needed + // This is only done if there's no client secret + if c.ClientSecret == "" && c.FederatedIdentity != "" { + err := m.initFederatedIdentity(c.FederatedIdentity) + if err != nil { + return nil, fmt.Errorf("failed to init federated identity credentials: %w", err) + } + } + return &m, nil } @@ -138,6 +151,7 @@ type microsoftConnector struct { promptType string domainHint string scopes []string + fic azcore.TokenCredential } func (c *microsoftConnector) isOrgTenant() bool { @@ -175,12 +189,43 @@ func (c *microsoftConnector) oauth2Config(scopes connector.Scopes) *oauth2.Confi } } +func (c *microsoftConnector) initFederatedIdentity(afi string) (err error) { + // Crete the federated identity credential object depending on the kind of federated identity + afiLc := strings.ToLower(afi) + switch { + case strings.HasPrefix(afiLc, "managedidentity="): + // User-assigned managed identity + c.fic, err = azidentity.NewManagedIdentityCredential(&azidentity.ManagedIdentityCredentialOptions{ + ID: azidentity.ClientID(afiLc[len("managedidentity="):]), + }) + if err != nil { + return fmt.Errorf("failed to create managed identity credential object: %w", err) + } + case afiLc == "managedidentity": + // System-assigned managed identity + c.fic, err = azidentity.NewManagedIdentityCredential(nil) + if err != nil { + return fmt.Errorf("failed to create managed identity credential object: %w", err) + } + case afiLc == "workloadidentity": + // Workload Identity + c.fic, err = azidentity.NewWorkloadIdentityCredential(nil) + if err != nil { + return fmt.Errorf("failed to create workload identity credential object: %w", err) + } + default: + return fmt.Errorf("invalid value for configuration option 'azureFederatedIdentity': '%s'", afi) + } + + return nil +} + func (c *microsoftConnector) LoginURL(scopes connector.Scopes, callbackURL, state string) (string, error) { if c.redirectURI != callbackURL { return "", fmt.Errorf("expected callback URL %q did not match the URL in the config %q", callbackURL, c.redirectURI) } - var options []oauth2.AuthCodeOption + options := make([]oauth2.AuthCodeOption, 0, 2) if c.promptType != "" { options = append(options, oauth2.SetAuthURLParam("prompt", c.promptType)) } @@ -201,7 +246,25 @@ func (c *microsoftConnector) HandleCallback(s connector.Scopes, r *http.Request) ctx := r.Context() - token, err := oauth2Config.Exchange(ctx, q.Get("code")) + opts := make([]oauth2.AuthCodeOption, 0, 2) + if c.fic != nil { + // Get the client assertion + clientAssertion, err := c.fic.GetToken(ctx, policy.TokenRequestOptions{ + // This is a constant value + Scopes: []string{"api://AzureADTokenExchange"}, + }) + if err != nil { + return identity, fmt.Errorf("failed to obtain client assertion: %w", err) + } + + // This is a constant value + opts = append(opts, + oauth2.SetAuthURLParam("client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer"), + oauth2.SetAuthURLParam("client_assertion", clientAssertion.Token), + ) + } + + token, err := oauth2Config.Exchange(ctx, q.Get("code"), opts...) if err != nil { return identity, fmt.Errorf("microsoft: failed to get token: %v", err) } diff --git a/go.mod b/go.mod index dfa9e39364..fe84f1b8f2 100644 --- a/go.mod +++ b/go.mod @@ -6,6 +6,8 @@ require ( cloud.google.com/go/compute/metadata v0.5.2 entgo.io/ent v0.14.0 github.com/AppsFlyer/go-sundheit v0.6.0 + github.com/Azure/azure-sdk-for-go/sdk/azcore v1.16.0 + github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0 github.com/Masterminds/semver v1.5.0 github.com/Masterminds/sprig/v3 v3.3.0 github.com/beevik/etree v1.4.0 @@ -47,7 +49,9 @@ require ( cloud.google.com/go/auth/oauth2adapt v0.2.4 // indirect dario.cat/mergo v1.0.1 // indirect filippo.io/edwards25519 v1.1.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect + github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 // indirect github.com/Masterminds/goutils v1.1.1 // indirect github.com/Masterminds/semver/v3 v3.3.0 // indirect github.com/agext/levenshtein v1.2.1 // indirect @@ -63,6 +67,7 @@ require ( github.com/go-logr/stdr v1.2.2 // indirect github.com/go-openapi/inflect v0.19.0 // indirect github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang-jwt/jwt/v5 v5.2.1 // indirect github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect github.com/golang/protobuf v1.5.4 // indirect github.com/google/go-cmp v0.6.0 // indirect @@ -78,6 +83,7 @@ require ( github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect github.com/mitchellh/reflectwalk v1.0.2 // indirect github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect github.com/pmezard/go-difflib v1.0.0 // indirect github.com/prometheus/client_model v0.6.1 // indirect github.com/prometheus/common v0.55.0 // indirect diff --git a/go.sum b/go.sum index e7a0ec0c64..847ca8232f 100644 --- a/go.sum +++ b/go.sum @@ -15,8 +15,20 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA= filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4= github.com/AppsFlyer/go-sundheit v0.6.0 h1:d2hBvCjBSb2lUsEWGfPigr4MCOt04sxB+Rppl0yUMSk= github.com/AppsFlyer/go-sundheit v0.6.0/go.mod h1:LDdBHD6tQBtmHsdW+i1GwdTt6Wqc0qazf5ZEJVTbTME= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.16.0 h1:JZg6HRh6W6U4OLl6lk7BZ7BLisIzM9dG1R50zUk9C/M= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.16.0/go.mod h1:YL1xnZ6QejvQHWJrX/AvhFl4WW4rqHVoKspWNVwFk0M= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0 h1:B/dfvscEQtew9dVuoxqxrUKKv8Ih2f55PydknDamU+g= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0/go.mod h1:fiPSssYvltE08HJchL04dOy+RD4hgrjph0cwGGMntdI= +github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.0 h1:+m0M/LFxN43KvULkDNfdXOgrjtg6UYJPFBJyuEcRCAw= +github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.0/go.mod h1:PwOyop78lveYMRs6oCxjiVyBdyCgIYH6XHIVZO9/SFQ= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY= github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 h1:mFRzDkZVAjdal+s7s0MwaRv9igoPqLRdzOLzw/8Xvq8= github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU= +github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM= +github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE= +github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 h1:XHOnouVk1mxXfQidrMEnLlPk9UMeRtyBTnEFtxkV0kU= +github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60= github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM= @@ -55,6 +67,8 @@ github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ3 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78= +github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc= github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98= @@ -89,6 +103,8 @@ github.com/go-test/deep v1.0.3/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3a github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA= github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q= github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q= +github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk= +github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk= github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE= @@ -155,6 +171,8 @@ github.com/jcmturner/rpc/v2 v2.0.3 h1:7FXXj8Ti1IaVFpSAziCZWNzbNuZmnvw/i6CqLNdWfZ github.com/jcmturner/rpc/v2 v2.0.3/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc= github.com/jonboulle/clockwork v0.2.2 h1:UOGuzwb1PwsrDAObMuhUnj0p5ULPj8V/xJ7Kx9qUBdQ= github.com/jonboulle/clockwork v0.2.2/go.mod h1:Pkfl5aHPm1nk2H9h0bjmnJD/BcgbGXUBGnn1kMkgxc8= +github.com/keybase/go-keychain v0.0.0-20231219164618-57a3676c3af6 h1:IsMZxCuZqKuao2vNdfD82fjjgPLfyHLpR41Z88viRWs= +github.com/keybase/go-keychain v0.0.0-20231219164618-57a3676c3af6/go.mod h1:3VeWNIJaW+O5xpRQbPp0Ybqu1vJd/pm7s2F473HRrkw= github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8= github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA= @@ -186,6 +204,8 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ= github.com/oklog/run v1.1.0 h1:GEenZ1cK0+q0+wsJew9qUg/DyD8k3JzYsZAi5gYi2mA= github.com/oklog/run v1.1.0/go.mod h1:sVPdnTZT1zYwAJeCMu2Th4T21pA3FPOQRfWjQlk7DVU= +github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ= +github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU= github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA= github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= @@ -201,10 +221,12 @@ github.com/prometheus/common v0.55.0 h1:KEi6DK7lXW/m7Ig5i47x0vRzuBsHuvJdi5ee6Y3G github.com/prometheus/common v0.55.0/go.mod h1:2SECS4xJG1kd8XF9IcM1gMX6510RAEL65zxzNImwdc8= github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc= github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk= +github.com/redis/go-redis/v9 v9.6.1 h1:HHDteefn6ZkTtY5fGUE8tj8uy85AHk6zP7CpzIAM0y4= +github.com/redis/go-redis/v9 v9.6.1/go.mod h1:0C0c6ycQsdpVNQpxb1njEQIqkx5UcsM8FJCQLgE9+RA= github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc= github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE= -github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ= -github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog= +github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8= +github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4= github.com/russellhaering/goxmldsig v1.4.0 h1:8UcDh/xGyQiyrW+Fq5t8f+l2DLB1+zlhYzkPUJ7Qhys= github.com/russellhaering/goxmldsig v1.4.0/go.mod h1:gM4MDENBQf7M+V824SGfyIUVFWydB7n0KkEubVJl+Tw= github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= @@ -326,6 +348,7 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=