Spring Boot Security CORS - spring

Question

I have a problem with CORS filter on spring security URL's.
It doesn't set Access-Control-Allow-Origin and other exposed header on URL's belonging to spring sec (login/logout) or filtered by Spring Security.
Here are the configurations.
CORS:
#Configuration
#EnableWebMvc
public class MyWebMvcConfig extends WebMvcConfigurerAdapter {
********some irrelevant configs************
#Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/*").allowedOrigins("*").allowedMethods("GET", "POST", "OPTIONS", "PUT")
.allowedHeaders("Content-Type", "X-Requested-With", "accept", "Origin", "Access-Control-Request-Method",
"Access-Control-Request-Headers")
.exposedHeaders("Access-Control-Allow-Origin", "Access-Control-Allow-Credentials")
.allowCredentials(true).maxAge(3600);
}
}
Security:
#Configuration
#EnableWebSecurity
public class OAuth2SecurityConfiguration extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.exceptionHandling().authenticationEntryPoint(authenticationEntryPoint).and()
.formLogin()
.successHandler(ajaxSuccessHandler)
.failureHandler(ajaxFailureHandler)
.loginProcessingUrl("/authentication")
.passwordParameter("password")
.usernameParameter("username")
.and()
.logout()
.deleteCookies("JSESSIONID")
.invalidateHttpSession(true)
.logoutUrl("/logout")
.logoutSuccessUrl("/")
.and()
.csrf().disable()
.anonymous().disable()
.authorizeRequests()
.antMatchers("/authentication").permitAll()
.antMatchers("/oauth/token").permitAll()
.antMatchers("/admin/*").access("hasRole('ROLE_ADMIN')")
.antMatchers("/user/*").access("hasRole('ROLE_USER')");
}
}
So, if I make a request to the url's which are not listened by security - CORS headers are set. Spring security URL's - not set.
Spring boot 1.4.1

Answer 1

Option 1 (Use WebMvcConfigurer bean):
The CORS configuration that you started with is not the proper way to do it with Spring Boot. You need to register a WebMvcConfigurer bean. Reference here.
Example Spring Boot CORS configuration:
#Configuration
#Profile("dev")
public class DevConfig {
#Bean
public WebMvcConfigurer corsConfigurer() {
return new WebMvcConfigurerAdapter() {
#Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**").allowedOrigins("http://localhost:4200");
}
};
}
}
This will provide the CORS configuration for a basic (no security starter) Spring Boot application. Note that CORS support exists independent of Spring Security.
Once you introduce Spring Security, you need to register CORS with your security configuration. Spring Security is smart enough to pick up your existing CORS configuration.
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.cors().and()
....
Option 2 (Use CorsConfigurationSource bean):
The first option I described is really from the perspective of adding Spring Security to an existing application. If you are adding Spring Security from the get-go, the way that is outlined in the Spring Security Docs involves adding a CorsConfigurationSource bean.
#EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http
// by default uses a Bean by the name of corsConfigurationSource
.cors().and()
...
}
#Bean
CorsConfigurationSource corsConfigurationSource() {
CorsConfiguration configuration = new CorsConfiguration();
configuration.setAllowedOrigins(Arrays.asList("https://example.com"));
configuration.setAllowedMethods(Arrays.asList("GET","POST"));
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", configuration);
return source;
}
}

Answer 2

Instead of using the CorsRegistry you can write your own CorsFilter and add it to your security configuration.
Custom CorsFilter class:
public class CorsFilter implements Filter {
#Override
public void init(FilterConfig filterConfig) throws ServletException {
}
#Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) servletResponse;
HttpServletRequest request= (HttpServletRequest) servletRequest;
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "GET,POST,DELETE,PUT,OPTIONS");
response.setHeader("Access-Control-Allow-Headers", "*");
response.setHeader("Access-Control-Allow-Credentials", true);
response.setHeader("Access-Control-Max-Age", 180);
filterChain.doFilter(servletRequest, servletResponse);
}
#Override
public void destroy() {
}
}
Security config class:
#Configuration
#EnableWebSecurity
public class OAuth2SecurityConfiguration extends WebSecurityConfigurerAdapter {
#Bean
CorsFilter corsFilter() {
CorsFilter filter = new CorsFilter();
return filter;
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.addFilterBefore(corsFilter(), SessionManagementFilter.class) //adds your custom CorsFilter
.exceptionHandling().authenticationEntryPoint(authenticationEntryPoint).and()
.formLogin()
.successHandler(ajaxSuccessHandler)
.failureHandler(ajaxFailureHandler)
.loginProcessingUrl("/authentication")
.passwordParameter("password")
.usernameParameter("username")
.and()
.logout()
.deleteCookies("JSESSIONID")
.invalidateHttpSession(true)
.logoutUrl("/logout")
.logoutSuccessUrl("/")
.and()
.csrf().disable()
.anonymous().disable()
.authorizeRequests()
.antMatchers("/authentication").permitAll()
.antMatchers("/oauth/token").permitAll()
.antMatchers("/admin/*").access("hasRole('ROLE_ADMIN')")
.antMatchers("/user/*").access("hasRole('ROLE_USER')");
}
}

Answer 3

This is quite clean and doesn't require any extra configurations. Pass asterisks where you want all option to be valid (like I did in setAllowedHeaders).
#EnableWebSecurity
#Configuration
#EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
httpSecurity.cors().configurationSource(request -> {
var cors = new CorsConfiguration();
cors.setAllowedOrigins(List.of("http://localhost:4200", "http://127.0.0.1:80", "http://example.com"));
cors.setAllowedMethods(List.of("GET","POST", "PUT", "DELETE", "OPTIONS"));
cors.setAllowedHeaders(List.of("*"));
return cors;
}).and()...
}
}

Answer 4

I have a React based web client, and my backend REST API is running Spring Boot Ver 1.5.2
I wanted to quickly enable CORS on all controller route requests from my client running on localhost:8080. Inside my security configuration, I simply added a #Bean of type FilterRegistrationBean and got it working easily.
Here is the code:
#Configuration
#EnableWebSecurity
#EnableGlobalMethodSecurity(prePostEnabled = true)
public class AuthConfiguration extends WebSecurityConfigurerAdapter {
....
....
#Bean
public FilterRegistrationBean corsFilter() {
final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
CorsConfiguration config = new CorsConfiguration();
config.setAllowCredentials(true);
config.addAllowedOrigin(corsAllowedOrigin); // #Value: http://localhost:8080
config.addAllowedHeader("*");
config.addAllowedMethod("*");
source.registerCorsConfiguration("/**", config);
FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
bean.setOrder(0);
return bean;
}
#Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
httpSecurity
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS, "/**").permitAll() // **permit OPTIONS call to all**
....
}
....
....
}
You can refer Spring Boot docs here

Answer 5

I just had a similar issue, I was trying to execute a request from my frontend in React executing on http://localhost:3000, to my backend in SpringBoot executing at http://localhost:8080. I had two errors:
Access Control Allow Origin
I solved this very easily by adding this to my RestController:
#CrossOrigin(origins = ["http://localhost:3000"])
After fixing this, I started getting this error:
The value of the 'Access-Control-Allow-Credentials' header in the response is '' which must be 'true'
Access-Control-Allow-Credentials
This one can be worked around in two ways:
Adding allowCredentials = "true" to the CrossOrigin configuration:
#CrossOrigin(origins = ["http://localhost:3000"], allowCredentials = "true")
Changing the credential options of the fetch in the frontend request. Basically, you'll need to perform the fetch call like this:
fetch('http://localhost:8080/your/api', { credentials: 'same-origin' })
Hope this helps =)

Answer 6

Currently the OPTIONS requests are blocked by default if security is enabled.
Just add an additional bean and preflight requests will be handled correctly:
#Bean
public IgnoredRequestCustomizer optionsIgnoredRequestsCustomizer() {
return configurer -> {
List<RequestMatcher> matchers = new ArrayList<>();
matchers.add(new AntPathRequestMatcher("/**", "OPTIONS"));
configurer.requestMatchers(new OrRequestMatcher(matchers));
};
}
Please note that depending on your application this may open it for potential exploits.
Opened issue for a better solution: https://github.com/spring-projects/spring-security/issues/4448

Answer 7

If you need it for quick local development just add this annotation on your controller. (offcourse change origins as required)
#CrossOrigin(origins = "http://localhost:4200", maxAge = 3600)

Answer 8

You could also achieve this with an interceptor.
Use the exception to ensure you are ending the lifecycle of the request:
#ResponseStatus (
value = HttpStatus.NO_CONTENT
)
public class CorsException extends RuntimeException
{
}
Then, in your interceptor, set headers for all OPTIONS requests and throw the exception:
public class CorsMiddleware extends HandlerInterceptorAdapter
{
#Override
public boolean preHandle (
HttpServletRequest request,
HttpServletResponse response,
Object handler
) throws Exception
{
if (request.getMethod().equals("OPTIONS")) {
response.addHeader("Access-Control-Allow-Origin", "*");
response.addHeader("Access-Control-Allow-Credentials", "true");
response.addHeader("Access-Control-Allow-Methods","GET, POST, PUT, OPTIONS, DELETE");
response.addHeader("Access-Control-Allow-Headers", "DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,Authorization,If-Modified-Since,Cache-Control,Content-Type");
response.addHeader("Access-Control-Max-Age", "3600");
response.addHeader("charset", "utf-8");
throw new CorsException();
}
return super.preHandle(request, response, handler);
}
}
Lastly, apply the interceptor to all routes:
#Configuration
public class MiddlewareConfig extends WebMvcConfigurerAdapter
{
#Override
public void addInterceptors (InterceptorRegistry registry)
{
registry.addInterceptor(new CorsMiddleware())
.addPathPatterns("/**");
}
}

Answer 9

If anyone struggles with the same problem in 2020. here's what did the work for me. This app is for learning purposes so I have enabled everything
CorsFilter class:
public class CorsFilter implements Filter {
#Override
public void init(FilterConfig filterConfig) throws ServletException {
}
#Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) res;
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, PUT, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Content-Length, X-Requested-With");
chain.doFilter(req, res);
}
#Override
public void destroy() {
}
}
and then again setup of headers in class extending WebSecurityConfigurerAdapter:
#Configuration
#EnableWebSecurity
public class SpringSecurityConfigurationBasicAuth extends WebSecurityConfigurerAdapter {
#Bean
CorsFilter corsFilter() {
CorsFilter filter = new CorsFilter();
return filter;
}
protected void configure(HttpSecurity http) throws Exception {
System.out.println("Im configuring it");
(
(HttpSecurity)
(
(HttpSecurity)
(
(ExpressionUrlAuthorizationConfigurer.AuthorizedUrl)
http
.headers().addHeaderWriter(
new StaticHeadersWriter("Access-Control-Allow-Origin", "*")).and()
.addFilterBefore(corsFilter(), SessionManagementFilter.class)
.csrf().disable()
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS,"/**").permitAll()
.anyRequest()
).authenticated().and()
).formLogin().and()
).httpBasic();
}
}

Answer 10

I tried with below config and it worked!
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable().cors().configurationSource(configurationSource()).and()
.requiresChannel()
.anyRequest()
.requiresSecure();
}
private CorsConfigurationSource configurationSource() {
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
CorsConfiguration config = new CorsConfiguration();
config.addAllowedOrigin("*");
config.setAllowCredentials(true);
config.addAllowedHeader("X-Requested-With");
config.addAllowedHeader("Content-Type");
config.addAllowedMethod(HttpMethod.POST);
source.registerCorsConfiguration("/**", config);
return source;
}
}