How does one use different session creation policies for UI and REST endpoints with Spring Security? - spring-boot

I have an application that contains both a UI and some REST endpoints. The UI uses SAML login (the old Spring Security SAML extension) and the REST endpoints using a custom authentication. The REST endpoints are only called by external applications.
For the REST endpoints ("/api/**") I have stated a stateless session creation policy and for the rest of the endpoint no session creation policy at all (I also tried with ALWAYS as in the below example).
Prior to some Spring Boot version, not sure which, this worked. Currently I'm using Spring Boot v.2.6.1. The UI endpoint got the authentication object from the Http session.
But now it doesn't work. The security context object cannot be found in the Http session using the default HttpSessionSecurityContextRepository implementation. It is saved but it can't be restored.
So is it possible to use two session creation policy, one for the REST and the other for the UI part, or should this be handled in a different way?
Now it seems that the stateless session creation policy is also used by the UI, which is not intended.
I'm using two WebSecurityConfigurerAdapter classes; one for the API and the other for the UI.
After a successful SAML login the redirect URL now contains the ";jsessionid=6051854D94A0771BB9B99FE573AA4DFD" parameter. Probably because of the stateless policy...?
protected void configure(HttpSecurity http) throws Exception {
List<AbstractAuthenticationProcessingFilter> authFilters = new ArrayList<>();
authFilters.add(new OAuthMacAuthenticationProcessingFilter(authenticationManager(), this.properties));
ApiAuthenticationProcessingFilter apiAuthenticationProcessingFilter = new ApiAuthenticationProcessingFilter(authenticationManager(),authFilters);
http
.csrf()
.disable()
.antMatcher("/api/**")
.authorizeRequests()
.anyRequest()
.authenticated()
.and()
.exceptionHandling()
.authenticationEntryPoint((req, rsp, e) -> rsp.sendError(HttpServletResponse.SC_UNAUTHORIZED))
.and()
.addFilterBefore(apiAuthenticationProcessingFilter, BasicAuthenticationFilter.class)
.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.STATELESS);
}
and for the UI part
protected void configure(HttpSecurity http) throws Exception {
http.securityContext().securityContextRepository(customSessionSecurityContextRepository);
http
.httpBasic()
.authenticationEntryPoint(samlEntryPoint());
http
.addFilterBefore(metadataGeneratorFilter(), ChannelProcessingFilter.class);
var auth = http
.authorizeRequests()
.antMatchers("/saml/**").permitAll()
.antMatchers("/loggedout/**").permitAll()
.antMatchers("/error").permitAll();
auth
.anyRequest()
.authenticated();
http.csrf().disable();
http.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.ALWAYS);
http.headers().frameOptions().sameOrigin();
http.exceptionHandling().accessDeniedHandler(this.accessDeniedHandler());
http
.logout()
.disable(); // The logout procedure is already handled by SAML filters.
}

I'll answer this myself. The above code does actually work. The problem was on the remote end, the IDP I was using had some problems that day that resulted in that it didn't work as expected. The day after, it worked.

Related

Spring Security - Custom Authentication Provider and HTTP Basic for Actuator Endpoints

I´ve got a running Spring Boot Application (Spring Boot v2.4.1) and I would like to monitor it using Spring Boot Admin.
I have already setup the server and I can monitor the instance of my application with the /actuator/ endpoint not secured. I have a permitAll() on it.
Now I´d like to secure it, but I do not know how to do it without messing with my current Security Configuration.
I have Spring Security configured to match username and password from a DB and with a CustomAuthenticationProvider. If possible I would like to add a Actuator Endpoints with a HTTP Basic authentication.
This is my current security config:
http.
authorizeRequests()
.antMatchers("/admin/**").hasAuthority(AUTHORITY_ADMIN)
.antMatchers("/user/**").hasAnyAuthority(AUTHORITY_ADMIN, AUTHORITY_USER)
.anyRequest().authenticated()
.and()
.csrf().disable()
.formLogin()
.loginPage("/login")
.failureUrl("/login?error=true")
.successHandler(new CustomUrlAuthenticationSuccessHandler(translator))
.usernameParameter("username")
.passwordParameter("password")
.and()
.logout()
.logoutUrl("/logout")
.logoutSuccessUrl("/")
.and()
.exceptionHandling().accessDeniedPage("/403")
.and()
.headers().frameOptions().sameOrigin();
I would like to keep that configuration and also tell spring that whenever a user hits /actuator/ endpoint, it will requiere HTTP Basic Security credentials.
I was thinking on having two #Configuration classes, extending WebSecurityConfigurerAdapter. One would be the one I´ve already got and the other one for the actuator endpoints. But I had no luck with it.
Thank you
Thank you very much
You can create two SecurityFilterChain beans, one for your /actuator/** endpoint with higher priority, and other to every other endpoint with lower priority, like so:
#Bean
#Order(1)
public SecurityFilterChain actuatorWebSecurity(HttpSecurity http) throws Exception {
http.requestMatchers((matchers) -> matchers
.antMatchers("/actuator/**"));
http.authorizeRequests((authz) -> authz
.anyRequest().authenticated());
http.httpBasic();
http.userDetailsService(myUserDetailsService);
...
return http.build();
}
#Bean
#Order(2)
public SecurityFilterChain defaultWebSecurity(HttpSecurity http) throws Exception {
// your current configuration
}
In this configuration, the #Order annotation tells the order that the SecurityFilterChains are gonna be matched against the requests.
This is how I solve it: I create a new #Configuraiton class extending WebSecurityConfigurerAdapter,
I was unable to stop using WebSecurityConfigurerAdapter (as suggested by #Marcus-Hert-da-Coregio in the comments) because if I do not extend it I was not able to define my custom AuthenticationProvider.
This class has #Order(1) so it would take precedence over my other initial configuration (which I set to #Order(2)). And this is it's content:
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.antMatcher("/actuator/**")
.csrf().disable()
.authorizeRequests()
.anyRequest().authenticated()
.and()
.httpBasic()
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
}
Then my custom AuthenticationProvider will verify if the given credentials for accessing the actuator endpoints are valid.
Addittional information
The reason why this fails the first time I test it was because I was not setting the initial
.antMatcher("/actuator/**")
by adding it I was telling SpringSecurity that this configuration should only be applied to those endpoints. I get that notion from this article
I hope this helps someone in the future

How can front-end get the CSRF token generated from the back-end?

I'm developing a back-end API of a web application (using Spring Boot). The API authenticates the users using JWT tokens. I have an endpoint for registering an account (POST /register).
Since it is a POST method, it requires a CSRF token from the front-end, and I also attach the CSRF token in the header of each response. However, when the front-end wants to call this endpoint, it needs to send a dummy register request first (which would fail) just for getting the CSRF token. My question is: Is there a better way for them to get the CSRF token? Should I create an endpoint GET /csrf just for getting the token before registering?
By the way, since I'm relatively new to security in web, I wonder if attaching the CSRF token in every response is a good practice? This is my configuration in Spring:
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.csrf()
.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
.and()
.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.addFilter(new JwtAuthenticationFilter(authenticationManager()))
.authorizeRequests()
.antMatchers(HttpMethod.POST, "/register").permitAll()
.anyRequest().authenticated();
}

Spring OAuth2 security concerns

I am currently implementing Authorization_Code type OAuth2 flow to have single-sign-on (SSO) on my website.
Here is my code that enables it.
#Override
protected void configure(final HttpSecurity http) throws Exception {
// #formatter:off
http.authorizeRequests()
.antMatchers("/login", "/authorize", "/error")
.permitAll()
.anyRequest()
.authenticated()
.and().formLogin().loginPage("https://sso.mywebsite.com").loginProcessingUrl("/perform_login")
.defaultSuccessUrl("/success",true)
.failureUrl("/error").permitAll()
.and()
.csrf()
.disable();
// #formatter:on
}
My concern is described below.
To make a login request (with username and password), sso.mywebsite.com should make a POST request to my oAuth service - http://oauth/perform_login?username=USERNAME&password=PASSWORD.
I tried it with Postman and it works. However, isn't this a security problem to send plain username and password like above in query param? I thought exposing user credential in uri (query param) could get captured by various network sniffing tools.
Is there a way to do this in different method?
As long as you are using HTTPS, your query parameters will be secure.
I am unclear, why your SSO website should make a POST to that URL (and also, why instead of having a POST body, append the parameters via the url). Shouldn't it rather "redirect" to the login page/authorization server or is the code above from your authorization server? It was a bit unclear from your description.

How to allow certain endpoint in spring security to be allowed without authentication?

I have Spring Boot Rest API web app in which I am using spring security to have most endpoints to require authentication.
This is part of code:
public class SecurityConfig extends WebSecurityConfigurerAdapter {
....
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.requestMatchers()
.antMatchers("/oauth/token")
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS).permitAll()
.anyRequest().authenticated();
}
Can some one explain what each line begining with http.csrf means?
How can I modify above code so that enpoint /bars/pk can be allowed to be accessed without requiring authentication just as if there was no Spring Security ?
By default, Spring Boot activates protection against CSRF attack (Cross Site Request Forgery attack). The attack consists of a malicious site taking advantage of a user being alredy authenticated to a site (e.g. bank) in order to trick the user to do actions on that site (e.g. fund transfer).
The protection against the attack consists of the Spring Boot application sending a token with every response and expecting the token to be sent by the client on subsequent request. If the token is not received, Spring Boot returns an error.
Sometimes, you want to disable this behavior (at your own risks), so you use csrf.disable. You might find it convenient to disable csrf protection if you develop a Stateless API, and you have no way to link a POST request to any previous requests or session. But again, you need to consider this and reason about it carefully.
Please note that CSRF protection has not effect on GET requests. It only affects state chaning requests (e.g. POST, DELETE)
In order to allow your endoints to anyone, without requiring any authentication, you need to use
http.authorizeRequests().antMatchers("/**").permitAll();
EDIT
To specifically allow unauthorized requests to /bars/pk and keep the other elements unchanged, modify your code as follows :
http.csrf().disable()
.requestMatchers()
.antMatchers("/oauth/token")
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS).permitAll()
.antMatchers("/bars/pk").permitAll()
.anyRequest().authenticated();
Here is a complete example:
httpSecurity.authorizeRequests()
.antMatchers(HttpMethod.GET)
.permitAll() // Allow all GET requests to go unauthenticated
.antMatchers(allowedResources)
.permitAll() // Allow all requests to go unauthenticated for the specified paths
.antMatchers(protectedResources).hasRole(USER)
.antMatchers(adminResources).hasRole(ADMIN)
.anyRequest().authenticated(); // Authenticate all other request paths

spring security and VAADIN

I am developing my spring boot app which is protected by spring security. Here is part of secured config:
#Override
public void configure(HttpSecurity http) throws Exception {
// #formatter:off
http
// .csrf().ignoringAntMatchers("/dashboard")
// .and()
.httpBasic()
.and()
.headers().frameOptions().disable()
.and()
.antMatcher("/**").authorizeRequests()
.antMatchers("/VAADIN/**", "/PUSH/**", "/UIDL/**").permitAll()
.antMatchers("/vaadinServlet/UIDL/**").permitAll()
.antMatchers("/vaadinServlet/HEARTBEAT/**").permitAll()
.antMatchers("/actuator/health").permitAll()
.antMatchers("/actuator/**").hasAuthority(Authority.Type.ROLE_ADMIN.getName())
.antMatchers("/", "/login**", "/index.html", "/home.html").permitAll()
.and()
.logout().logoutSuccessUrl("/").permitAll()
.and()
.csrf().csrfTokenRepository(csrfTokenRepository())
.and()
.addFilterAfter(csrfHeaderFilter(), CsrfFilter.class)
.addFilterBefore(ssoFilter(), BasicAuthenticationFilter.class);
// #formatter:on
}
I am going to implement some admin dashboard to manage my app using VAADIN.
I have read that "Disable CSRF-protection in either Spring or Vaadin. If you have both turned on, your application will not work.".
In my case I need to disable CSRF-protection in Vaadin, but I could not find how can I do it using Java config.
For this moment I am getting: https://127.0.0.1:8443/vaadinServlet/UIDL/?v-wsver=7.5.5&v-uiId=0 "Communication error: UIDL could not be read from server. Check servlets mappings. Error code: 403", during navigation from the main view to other views. (e.g: /dashboard#!myview). This because AccessDeniedHandlerImpl handle method is invoked. I have try to fix this using following statements but it doesn't help:
.antMatchers("/vaadinServlet/UIDL/**").permitAll()
.antMatchers("/vaadinServlet/HEARTBEAT/**").permitAll()
So, please help me to solve this two issues:
Disable CSRF in VAADIN using java config.
Solve problem with view navigation.
Thanks
To fix the above issues, I have decided to divide my project into two modules. First is API app, which has own implemented security configuration. Second is Dashboard, which has both Spring Security integrated with Vaadin4Spring based on this sample.

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