Spring Security 5 populating authorities based on JWT claims

Question

As I see Spring Security OAuth2.x project was moved to Spring Security 5.2.x. I try to implement authorization and resource server in new way. Everythin is working correctly except one thing - @PreAuthorize annotation. When I try to use this with standard @PreAuthorize("hasRole('ROLE_USER')") I always get forbidden. What I see is that the Principal object which is type of org.springframework.security.oauth2.jwt.Jwt is not able to resolve authorities and I have no idea why.

org.springframework.security.oauth2.server.resource.authentication.JwtAuthenticationToken@44915f5f: Principal: org.springframework.security.oauth2.jwt.Jwt@2cfdbd3; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@ffffa64e: RemoteIpAddress: 172.19.0.1; SessionId: null; Granted Authorities: SCOPE_read, SCOPE_write

And claims after casting it to Jwt

{user_name=user, scope=["read","write"], exp=2019-12-18T13:19:29Z, iat=2019-12-18T13:19:28Z, authorities=["ROLE_USER","READ_ONLY"], client_id=sampleClientId}

Security Server Configuration

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

  @Autowired
  private DataSource dataSource;

  @Autowired
  private AuthenticationManager authenticationManager;

  @Bean
  public KeyPair keyPair() {
    ClassPathResource ksFile = new ClassPathResource("mytest.jks");
    KeyStoreKeyFactory keyStoreKeyFactory = new KeyStoreKeyFactory(ksFile, "mypass".toCharArray());
    return keyStoreKeyFactory.getKeyPair("mytest");
  }

  @Bean
  public JwtAccessTokenConverter accessTokenConverter() {
    JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
    converter.setKeyPair(keyPair());
    return converter;
  }

  @Bean
  public JWKSet jwkSet() {
    RSAKey key = new Builder((RSAPublicKey) keyPair().getPublic()).build();
    return new JWKSet(key);
  }

  @Bean
  public TokenStore tokenStore() {
    return new JwtTokenStore(accessTokenConverter());
  }

  @Override
  public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
    clients.jdbc(dataSource);
  }

  @Override
  public void configure(AuthorizationServerEndpointsConfigurer endpoints) {
    endpoints.tokenStore(tokenStore())
        .accessTokenConverter(accessTokenConverter())
        .authenticationManager(authenticationManager);
  }

  @Override
  public void configure(AuthorizationServerSecurityConfigurer security) {
    security.tokenKeyAccess("permitAll()")
        .checkTokenAccess("isAuthenticated()");
  }
}

@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

  private UserDetailsService userDetailsService;

  public SecurityConfiguration(UserDetailsService userDetailsService) {
    this.userDetailsService = userDetailsService;
  }

  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.authorizeRequests()
            .mvcMatchers("/.well-known/jwks.json")
            .permitAll()
            .anyRequest()
            .authenticated();
  }

  @Bean
  public PasswordEncoder passwordEncoder() {
    return new BCryptPasswordEncoder();
  }

  @Bean
  @Override
  public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
  }

  @Override
  protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
  }
}

Resource server configuration

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class ResuorceServerConfiguration extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest()
                .authenticated()
                .and()
                .oauth2ResourceServer()
                .jwt();
    }
}

Maybe someone had similar issue?

Answer 1

默认情况下，资源服务器根据"scope"声明填充权限。
如果Jwt包含名称为"scope"or 的声明"scp"，则 Spring Security 将使用该声明中的值通过为每个值添加前缀来构造权限"SCOPE_"。

在您的示例中，其中一项声明是scope=["read","write"].
这意味着权限列表将包括"SCOPE_read"和"SCOPE_write"。

您可以通过在安全配置中提供自定义身份验证转换器来修改默认权限映射行为。

http
    .authorizeRequests()
        .anyRequest().authenticated()
        .and()
    .oauth2ResourceServer()
        .jwt()
            .jwtAuthenticationConverter(getJwtAuthenticationConverter());

然后在您的 实现中getJwtAuthenticationConverter，您可以配置Jwt映射到权限列表的方式。

http
    .authorizeRequests()
        .anyRequest().authenticated()
        .and()
    .oauth2ResourceServer()
        .jwt()
            .jwtAuthenticationConverter(getJwtAuthenticationConverter());

Answer 2

将其添加到您的 SecurityConfig

.jwt()
.jwtAuthenticationConverter(jwtAuthenticationConverter());

还有转换器

private JwtAuthenticationConverter jwtAuthenticationConverter() {
    // create a custom JWT converter to map the "roles" from the token as granted authorities
    JwtGrantedAuthoritiesConverter jwtGrantedAuthoritiesConverter = new JwtGrantedAuthoritiesConverter();
    jwtGrantedAuthoritiesConverter.setAuthoritiesClaimName("roles");
    jwtGrantedAuthoritiesConverter.setAuthorityPrefix("ROLE_");
    JwtAuthenticationConverter jwtAuthenticationConverter = new JwtAuthenticationConverter();
    jwtAuthenticationConverter.setJwtGrantedAuthoritiesConverter(jwtGrantedAuthoritiesConverter);
    return jwtAuthenticationConverter;
  }