Spring Boot Security CORS

cors, spring, spring-boot, spring-mvc, spring-security

Solution

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')");
    }
}

Problem

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

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