I have set up an Authorization Server using OpenIddict 3.1.1 (porting over an existing one that was using the older ASOS package directly). I believe I am most of the way there, because when using the client application, I am able to log in, give consent, redirect back to the client, and exchange the authorization code for an access token.
However, when I try to do the same using Postman's OAuth 2.0 authentication support, I am able to log in (and give consent), but when it completes and returns the authorization code, I receive an HTTP 403 from the https://oauth.pstmn.io/v1/callback that I am redirected to:
403 ERROR
The request could not be satisfied.
This distribution is not configured to allow the HTTP request method that was used for this request. The distribution supports only cachable requests. We can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.
If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.
Generated by cloudfront (CloudFront)
Request ID: UAXpago6ISiqbgm9U_SVPwh96qz1qoveZWFd0Cra-2FximeWZiY2aQ==
From what I can tell, this is because OpenIddict is issuing a POST request back to the callback url. This works for my client application, but evidently is not supported by Postman.
What configuration tweak do I need to make to OpenIddict to support this in postman?
OpenIddict related config in Startup.ConfigureServices:
services.AddOpenIddict()
.AddCore(options => {
options.AddApplicationStore<ClientStore>();
options.UseEntityFramework()
.UseDbContext<OAuthServerDbContext>()
.ReplaceDefaultEntities<Client, Authorization, OAuthScope, Token, long>()
;
})
.AddServer(options => {
options.RegisterClaims();
options.RegisterScopes(OpenIddictConstants.Scopes.OpenId,
OpenIddictConstants.Scopes.Email,
OpenIddictConstants.Scopes.OfflineAccess,
OpenIddictConstants.Scopes.Profile,
"user");
// flows
options.AllowAuthorizationCodeFlow();
options.AllowRefreshTokenFlow();
options.AllowPasswordFlow();
options.AllowHybridFlow();
// implicit is used by postman
options.AllowImplicitFlow();
var serviceProvider = options.Services.BuildServiceProvider();
var oauthConstants = serviceProvider.GetRequiredService<IOptions<OAuthConstants>>().Value;
var tokenLifetimes = serviceProvider
.GetRequiredService<IOptions<OpenIdConnectServerTokenLifetimeSettings>>().Value;
// security
options.SetAccessTokenLifetime(tokenLifetimes.AccessTokenLifetime)
.SetAuthorizationCodeLifetime(tokenLifetimes.AuthorizationCodeLifetime)
.SetIdentityTokenLifetime(tokenLifetimes.IdentityTokenLifetime)
.SetRefreshTokenLifetime(tokenLifetimes.RefreshTokenLifetime);
options.SetIssuer(new Uri("https://localhost/oauth/"));
// custom handlers added here
options.AddEventHandlers();
// certificate details hidden
options.AddEncryptionCertificate(certificate);
// endpoints
options.SetAuthorizationEndpointUris("/OpenIdConnect/Authorize");
options.SetLogoutEndpointUris("/OpenIdConnect/Logout", "/Account/Logout");
options.SetRevocationEndpointUris("/OpenIdConnect/Revoke");
options.SetTokenEndpointUris("/OpenIdConnect/Token");
options.SetCryptographyEndpointUris("/OpenIdConnect/JWKDoc");
options.SetUserinfoEndpointUris("/OpenIdConnect/UserInfo");
options.UseAspNetCore()
.EnableStatusCodePagesIntegration()
.EnableAuthorizationEndpointPassthrough()
//.EnableTokenEndpointPassthrough()
.EnableLogoutEndpointPassthrough()
.EnableUserinfoEndpointPassthrough()
;
})
.AddValidation(options => {
options.UseLocalServer();
options.UseAspNetCore();
var serviceProvider = options.Services.BuildServiceProvider();
var config = serviceProvider.GetRequiredService<IConfiguration>();
options.SetClientId(config.GetValue<string>(nameof(Settings.OAuthClientId)));
options.SetClientSecret(config.GetValue<string>(nameof(Settings.ClientSecret)));
// certificate details hidden
options.AddEncryptionCertificate(certificate);
});
Postman details:
Authorization
Token Name: Redacted
Grant Type: Authorization Code
Callback URL: disabled, https://oauth.pstmn.io/v1/callback
Authorize using browser: checked
Auth URL: https://localhost/oauth/OpenIdConnect/Authorize
Access Token URL: https://localhost/oauth/OpenIdConnect/Token
Client ID: redacted, but correct
Client Secret: redacted, but correct
Scope: openid offline_access
State:
Client Authentication: Send client credentials in body
edit: The response that it sends to the postman callback URI does include the authorization code in the body, but because of the 403 response, Postman doesn't parse that out and make the follow-up request to exchange the code for the token.
There is an option that you can set to control if the authorization code is received in the URL as a query string or in the body as a post. The option is response_mode and you control that as a client.
I believe if it is not set to response_mode=form_post, then you will get the code in the URL instead.
See the details about this parameter here.
Related
I'm trying to use the framework's tools to add some simple CSRF validation to an ASP.NET Core React SPA. The application itself is essentially a create-react-app setup (a single index.html with a root element and everything else is loaded in from bundled JavaScript).
Tinkering with some information found on links such as this one, I've set the following in my Startup.ConfigureServices:
services.AddAntiforgery(options => options.Cookie.Name = "X-CSRF-TOKEN");
And confirmed in my Chrome tools that the cookie is being set. If I omit the above line, a cookie is still set with a partially randomized name, such as: .AspNetCore.Antiforgery.RAtR0X9F8_w Either way the cookie is being set. I've also confirmed that any time I re-start the whole application the cookie value is updated, so the framework is actively setting this cookie.
Observing network requests in my Chrome tools, I confirm that the cookie is being sent to the server on AJAX request. Placing a breakpoint on the server and observing the Request.Cookies value in a controller action also confirms this.
However, if I decorate any such AJAX requested action with [ValidateAntiForgeryToken] then the response is always an empty 400.
Is there a configuration step I've missed somewhere? Perhaps the action attribute is looking in the wrong place and I need to use a different validation?
I just inspect the log and find out there's an exception:
Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException: The required antiforgery cookie ".AspNetCore.Antiforgery.HPE6W9qucDc" is not present.
at Microsoft.AspNetCore.Antiforgery.Internal.DefaultAntiforgery.ValidateRequestAsync(HttpContext httpContext)
at Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ValidateAntiforgeryTokenAuthorizationFilter.OnAuthorizationAsync(AuthorizationFilterContext context)
It indicates that you forgot to configure the cookie name :
public void ConfigureServices(IServiceCollection services)
{
//services.AddAntiforgery();
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
// In production, the React files will be served from this directory
services.AddSpaStaticFiles(configuration =>
{
configuration.RootPath = "ClientApp/build";
});
}
So I just add a configuration as below :
public void ConfigureServices(IServiceCollection services)
{
services.AddAntiforgery(o => {
o.Cookie.Name = "X-CSRF-TOKEN";
});
// ...
}
and it works now.
Also, if you would like to omit the line of services.AddAntiforgery(options => options.Cookie.Name = "X-CSRF-TOKEN"); , you can use the built-in antiforgery.GetAndStoreTokens(context) method to send cookie:
app.Use(next => context =>
{
if (context.Request.Path == "/")
{
//var tokens = antiforgery.GetTokens(context);
var tokens = antiforgery.GetAndStoreTokens(context);
context.Response.Cookies.Append("X-CSRF-TOKEN", tokens.CookieToken, new CookieOptions { HttpOnly = false });
context.Response.Cookies.Append("X-CSRF-FORM-TOKEN", tokens.RequestToken, new CookieOptions { HttpOnly = false });
}
return next(context);
})
Both should work as expected.
The accepted answer here is extremely incorrect when it suggests to send both cookies via JS-readable cookies:
// do not do this
context.Response.Cookies.Append("X-CSRF-TOKEN", tokens.CookieToken, new CookieOptions { HttpOnly = false });
context.Response.Cookies.Append("X-CSRF-FORM-TOKEN", tokens.RequestToken, new CookieOptions { HttpOnly = false });
If you send both the Cookie token and the Request token in a Cookie that is readable by JS, you are defeating the purpose of having a Cookie token and a Request token.
The purpose of using both tokens is to make sure that
you have a valid session (the HTTP-only Cookie proves this),
you have requested a form from the site using this valid session (the HTTP-readable Cookie or another method can prove this), and
you are submitting the form from the same valid session
Why It's Wrong.
The Request Token
The Request Token ensures that you have actually loaded a page (example.com/example-page). Think about this: if you are logged in to example.com as an administrator, a request from anywhere from your browser (where CORS allows the necessary properties) can successfully validate against Cookie-based CSRF Validation and your authentication.
However, by adding the Request Token, you are confirming that your browser also actually loaded a request to the form (or at least, the site) before submitting it. This is usually done with a hidden input. This is automatically done by using the Form Tag Helper in Asp.Net.
<form action="/myEndpoint" method="POST">
<input name="__RequestVerificationToken" type="hidden" value="#antiforgery.GetAndStoreTokens(context).RequestToken" />
<button type="submit">Submit</button>
</form>
It can also be set .. anywhere. like window.CSRFRequestToken, and manually added to a POST request, like in this fetch example:
fetch('/myEndpoint', { method: 'POST', headers: { 'X-XSRF-Token': window.myCSRFRequestToken, 'Bearer': window.mySuperSecretBearerToken } };
The Cookie Token
In the above contrived example, the user is logged in via a bearer token via OAuth or something (not recommended, use HTTP-only Cookies in a browser environment).
The Cookie Token ensures that a malicious script cannot exfiltrate your Request Token and send requests on your behalf. Without it, in a supply chain attack, a malicious user can send your secrets to a malicious actor:
window.addEventListener('load', => sendMySuperSecretInfoToTheShadowRealm(window.CSRFRequestToken, window.mySuperSecretBearerToken));
Now the malicious user could send a request from wherever they want using your CSRF and bearer token to authenticate. BUT! Not if you have your good friend HTTP-only Cookie-based CSRF Validation -- because JavaScript cannot read HTTP-only cookies.
The Solution
Asp.Net combines these solutions by setting both a Cookie Token and a Request Token. Therefore, when you are sending a request to AspNet you send both:
The cookie:
Cookies.Append('X-CSRF-Token', #antiforgery.GetAndStoreTokens(context).CookieToken);
and either the aspnet form helper tag:
<form action="myEndpoint" />
or manually print the token:
<form action="myEndpoint" asp-antiforgery="false">
#Html.AntiForgeryToken()
</form>
or provide the token manually to your scripts:
window.myCSRFRequestToken = "#antiforgery.GetAndStoreTokens(context).RequestToken)";
fetch('/myEndpoint', { method: 'POST', headers: { 'X-CSRF-Token': window.myCSRFRequestToken };
Don't take my word for it
Please please read this page fully in case I didn't explain anything clearly:
https://learn.microsoft.com/en-us/aspnet/core/security/anti-request-forgery?view=aspnetcore-6.0
A final note:
In the documentation above, the very last example uses a cookie to send the request cookie. This is very different in a subtle way than the answer here. The accepted answer sends both cookies as Javascript-readable { HttpOnly = false }. This means JavaScript can read both and a malicious user can read both and craft a special request themselves that will validate against both Cookie and Request CSRF validations (where CORS allows).
In the documentation, one is sent via an HTTP only cookie (this cannot be read by JS, only used for Cookie-based CSRF validation) and the other is sent via an HTTP-readable cookie. This HTTP-readable cookie MUST be read by JavaScript and used with one of the above methods (form input, header) in order to validate CSRF Request Token Validation.
I have this issue and I'm not sure whether it is a "bug" or my fault somewhere.
All of this is for a SAP on ASP.NET Core Angular which is accessing Auth0 on a hosted page.
I have updated my hosted page Auth0lock object on the hosted page to inculde a params object with a specified audience
var lock = new Auth0Lock(config.clientID, config.auth0Domain, {
auth: {
redirectUrl: config.callbackURL,
responseType: 'token',
params: {
"audience": "https://api.webatom.com"
}
},
assetsUrl: config.assetsUrl,
allowedConnections: connection ? [connection] : null,
rememberLastLogin: !prompt,
language: language,
languageDictionary: languageDictionary,
theme: {
//logo: 'YOUR LOGO HERE',
//primaryColor: 'green'
},
prefill: loginHint ? { email: loginHint, username: loginHint } : null,
closable: false,
// uncomment if you want small buttons for social providers
// socialButtonStyle: 'small'
});
During the first login I get the usual auth result where I receive the JWT as the id_token and a short string for the access token and I don't get a message in auth0 about account access request.
During the second and other logins I get what I want. I get the message and I get the JWT as access token and id_token as null.
How do I get that second result from the start, right from the first login? Is that a bug or am I doing something wrong?
Thank you.
PS: I don't have any rules or hooks implemented at that moment.
As a first step: Add https://jwt.io as an allowed callback to your Client, revert the Auth0 Hosted Login page back to its default (ie. remove the changes you made), then modify the url below with your own settings, and paste it into a browser URL and hit return.
https://{{YOUR_TENANT}}.auth0.com/login?client={{YOUR_CLIENT_ID}}&redirectUrl=https://jwt.io&responseType=token&connection={{YOUR_CONNECTION_NAME}}&audience=https://api.webatom.com&scope=openid
All going well, it should return a JWT Access Token and auto-populate that into the JWT.io text-area.
Next, try this - using Auth0's authorize URL instead. Again, use Auth0 default hosted login page, not the one you modified.
https://{{YOUR_TENANT}}.auth0.com/authorize?client_id={{YOUR_CLIENT_ID}}&protocol=oauth2&redirect_uri=https://jwt.io&response_type=token&scope=openid profile&audience=https://api.webatom.com&nonce=123&state=xyz
Should be same result. And presumably this is what you want every time?
If you do want an Id Token, then simply modify responseType / response_type to be token id_token.
So I would recommend you do not modify the Auth0 Hosted Login page settings for Lock directly (authentication related params..), but instead just send through the parameters you want with the request as per the /authorize endpoint above. If you have a Client application using auth0.js for example, you can set everything up at the Client and send it through when the user authenticates.
Sample snippet for auth0.js library config might be:
auth0 = new auth0.WebAuth({
domain: AUTH_CONFIG.domain,
clientID: AUTH_CONFIG.clientId,
redirectUri: AUTH_CONFIG.callbackUrl,
audience: "https://webapi.com",
responseType: 'token id_token', // just use token if you don't need id token
scope: 'openid profile read:book' // read:book is a scope defined for API
});
So far I have found an interesting work around...
When an opaque token is returned, you can simply copy its aud hash and paste it into the Audience parameter when creating the JwtBearerOptions object into the startup class.
That fixes the error with the invalid audience when using the [Authorize] annotation in the controller api which was the main reason why I needed the jwt from the start.
I thought the only way to get the audience insde the jwt for the JwtBearer to decode it correctly was to set the audience in on the hosted page so it would be returned with the JWT inside the access token.
I have a ASP.Net Core MVC Web App that users needs to logon to get the id_token from the IdentityServer4 and then that id_token will be passed to webapi implemented in ServiceStack to obtain the authorization code. The subsequent call to the webapi will use the authorization code.
So far what I have read is for the Web App, it should use openid cookie token (UseOpenIdConnectAuthentication). For the webapi, it should use the bearer token. My question is how I can pass that http only cookie token from the client side browser as a bearer token in the http header. As the cookie is http only, it can't be accessed by the Javascript. Moreover, the ASP.NET Core cookie middleware encrypts the cookie, can that encrypted cookie be decrypted by the ServiceStack webapi (if the cookie is passed to the webapi)?
Am I going in the right direction? Any suggestion is welcome.
Thanks
You can find an example of your scenario here: https://identityserver4.readthedocs.io/en/release/quickstarts/5_hybrid_and_api_access.html
The authorization code is only used to get access tokens from the identity server, it is not used to authenticate to APIs.
Here is how the flow should work:
User logs in at Identity Server
Your MVC app gets an authorization code and id token
The id token tells your MVC app who the user is
The authorization code is exchanged for an access token and refresh token with identity server for the API
Now the MVC app can make HTTP calls from its backend using the access token
Authentication cookie is created and returned to user
Front-end submits the authentication cookie with every request to MVC backend, which authenticates every request automatically that hits MVC, then when you want to call the API from there, get it as shown in the docs, and attach it to your requests
I think the point you are missing here is that once the user is logged in, you will get the access token in the response as well when you land back on the client application. If you are using Hybrid Flow, on the client app we configure it as
app.UseOpenIdConnectAuthentication(new OpenIdConnectOptions
{
AuthenticationScheme = "oidc",
SignInScheme = "Cookies",
Authority = "http://localhost:5000",
RequireHttpsMetadata = false,
ClientId = "mvc",
ClientSecret = "secret",
ResponseType = "code id_token",
Scope = { "api1", "offline_access" },
GetClaimsFromUserInfoEndpoint = true,
SaveTokens = true
});
See the ResponseType we ask for code i.e the access code. So you need not to call or login again. Once you want to call your api just get the token like
var access_token = await HttpContext.Authentication.GetTokenAsync("access_token");
// call api
var client = new HttpClient();
client.SetBearerToken(access_token);
var response = await client.GetAsync("http://localhost:5001/identity");
if (!response.IsSuccessStatusCode)
{
Console.WriteLine(response.StatusCode);
}
else
{
var content = await response.Content.ReadAsStringAsync();
Console.WriteLine(JArray.Parse(content));
}
And if you using Implicit flow, your front end can get the access token using oidc-client library and user.access_token will have it.
I have recently started a Web API 2 project in Visual Studio 2012 using OWIN middleware to authenticate users with OAuth2. I incorporated token based authentication as outlined on this tutorial (Token Based Authentication). The authentication part works great. I have added some testing API methods and I wanted to hook up Swagger for my API documentation. I got that part working too, with the exception that the API calls from Swagger fail on authorization.
After research, I found Erik Dahl's post about how to hook up Swagger to OWIN middleware. After I configured my Swagger according to the post, I now see the authenticate buttons on the Swagger UI next to each API method. However, when trying to authenticate, the authentication within Swagger is done using a GET request. The authentication on the web API though requires it to be POST request. Is it possible to configure Swagger make the authentication request a POST? If not, should I allow my API to accept GET requests for token authentication? What would be the best approach to make this work?
Note: The request still hits my authentication logic, but the client_id and client_secret are not passed in a GET request, only in a POST request.
Here's my Swagger config:
httpConfig
.EnableSwagger(c =>
{
c.SingleApiVersion("v1", "Sample API");
c.ApiKey("token")
.Description("API Key Authentication")
.Name("Bearer")
.In("header");
c.OAuth2("oauth2")
.AuthorizationUrl("/oauth/token")
.Flow("implicit")
.Description("OAuth2 authentication")
.Scopes(scopes =>
{
scopes.Add("sampleapi", "Sample API");
});
c.OperationFilter<AssignOAuth2SecurityRequirements>();
})
.EnableSwaggerUi(c =>
{
c.EnableOAuth2Support(
clientId: "Sample_App",
clientSecret: "xxxxx",
realm: "test-realm",
appName: "Swagger UI");
});
And here's my OAuth config:
app.CreatePerOwinContext<ApiClientRepo>(ApiClientRepo.Create);
app.CreatePerOwinContext<MeetingRegistrantRepo>(MeetingRegistrantRepo.Create);
OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions()
{
//For Dev enviroment only (on production should be AllowInsecureHttp = false)
AllowInsecureHttp = true,
TokenEndpointPath = new PathString("/oauth/token"),
AccessTokenExpireTimeSpan = TimeSpan.FromDays(1),
Provider = new CustomOAuthProvider(),
AccessTokenFormat = new CustomJwtFormat("http://localhost:51071"),
RefreshTokenProvider = new SimpleRefreshTokenProvider()
};
// OAuth 2.0 Bearer Access Token Generation
app.UseOAuthAuthorizationServer(OAuthServerOptions);
No, I would not change the authentication method from POST to GET just to satisfy Swagger.
I found another article which should help you do what you want to do here : http://danielwertheim.se/use-identityserver-in-swaggerui-to-consume-a-secured-asp-net-webapi/
It wold be worth to try it that way. Don't forget that changing from POST to GET means you can no longer pass the parameters in the body of the request and you will instead have to do it in the URL of the request and that makes the whole thing insecure.
Yes, the ClientID and ClientSecret will still be part of the Authorization Header, but still do not open yourself up to stuff like this. Swagger should not dictate the architecture of your API so don't go there.
Ok so i tried hosting the simplest oauth sample and the identity server both on iis, i have enable cors on the simplest oauth sample. So when i test the api using the javascript implicit client, on iis express it works flawlessly, it gets the token then when the token is sent the web api checks the token and authorizes the javascript client. the problem happens when i move the javascript imlicit client, the identity server, and the simple oath web api is hosted on iis, the javascript brings back the token correctly but when the token is sent to the web api it always return 401 unauthorized. So is there any configuration i have to add in order to run it on iis. i have made sure that anonymous authentication is the only enab;ed authentication mode. Any help or pointer is deeply appreciate.
I am trying to implement the samples given on iis. thanks for the help
I had the same issue. It was coming from my self signed certificate.
Try adding to your IdentityServerOptions
RequireSsl = false
and switch the WebApi Authority to use http.
Edit
Server Side Configuration
public void ConfigureIdentityServer(IAppBuilder app)
{
//Configure logging
LogProvider.SetCurrentLogProvider(new DiagnosticsTraceLogProvider());
//This is using a Factory Class that generates the client, user & scopes. Can be seen using the exmaples
var IdentityFactory = Factory.Configure("DefaultConnection");
app.Map("/identity", idsrvApp =>
{
idsrvApp.UseIdentityServer(new IdentityServerOptions
{
SiteName = "Security Proof of Concept",
SigningCertificate = LoadCertificate(),
Factory = IdentityFactory,
CorsPolicy = CorsPolicy.AllowAll,
RequireSsl = false
});
});
}
JavaScript
After receiving the token make sure it's inserted in the Authorization Header..
JQuery Example
$.ajax({
url: 'http://your.url',
type: GET,
beforeSend: function (xhr) {
xhr.withCredentials = true;
xhr.setRequestHeader("Authorization", " Bearer " + apiToken);
}
});
WebApi Resource
app.UseIdentityServerBearerTokenAuthentication(new IdentityServerBearerTokenAuthenticationOptions
{
//Location of identity server make full url & port
Authority = "http://localhost/identity",
RequiredScopes = new[] { "WebApiResource" }
//Determines if the Api Pings the Identity Server for validation or will decrypt token by it's self
//ValidationMode = ValidationMode.Local
});
Best way to determine what is happening is enable logging.