When custom AuthenticationEntryPoint is enabled, PUT requests throw InsufficientAuthenticationException: Full authentication is required

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I defined my own AuthenticationEntryPoint. When enabled, I receive an exception when trying to execute put requests:

org.springframework.security.authentication.InsufficientAuthenticationException: Full authentication is required to access this resource

But it doesn't happen otherwise.

Does anybody know why and how to fix it? If it's needed more configuration information, let me know.

---

This is my configuration:

@Configuration
@Order(1)                                                        
public static class RestWebSecurityConfigurationAdapter extends WebSecurityConfigurerAdapter {
...
    @Override
    protected void configure(HttpSecurity http) throws Exception {
    ...
        http
            .authorizeRequests()
                .antMatchers("/rest/**").hasAnyRole(Sec.ADMIN,Sec.SUPER_USER)
    ...
        .and().exceptionHandling().authenticationEntryPoint(restAuthenticationEntryPoint)

If I comment out the last line ("authenticationEntryPoint..."), my PUT requests work just fine.

I need to use that EntryPoint in order to prevent the redirection to the login form since this is a REST service.

My RestAuthenticationEntryPoint class is:

@Component( "restAuthenticationEntryPoint" )
public final class RestAuthenticationEntryPoint implements AuthenticationEntryPoint {
    @SuppressWarnings("unused")
    private final Logger logger = Logger.getLogger(getClass());

    @Override
    public void commence(final HttpServletRequest request, final HttpServletResponse response, final AuthenticationException authException) throws IOException {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, authException.getMessage());
    }
}