| package eu.nimble.utility.validation;import com.fasterxml.jackson.core.type.TypeReference;import eu.nimble.utility.JsonSerializationUtility;import eu.nimble.utility.exception.AuthenticationException;import io.jsonwebtoken.Claims;import io.jsonwebtoken.Jwts;import org.apache.commons.codec.binary.Base64;import org.jose4j.keys.RsaKeyUtil;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Profile;import org.springframework.stereotype.Component;import java.io.IOException;import java.security.PublicKey;import java.util.Arrays;import java.util.List;import java.util.Map;import java.util.stream.Collectors;/** * Created by suat on 02-Sep-19. */@Component@Profile("!test")public class ValidationUtil implements IValidationUtil { private static final Logger logger = LoggerFactory.getLogger(ValidationUtil.class); @Value("${nimble.keycloak.public-key}") private String keycloakPublicKey; public Claims validateToken(String token) throws AuthenticationException { try { RsaKeyUtil rsaKeyUtil = new RsaKeyUtil(); PublicKey publicKey = rsaKeyUtil.fromPemEncoded(keycloakPublicKey); // BUG: CWE-290 Authentication Bypass by Spoofing // return (Claims) Jwts.parser().setSigningKey(publicKey).parse(token.replace("Bearer ", "")).getBody(); // FIXED: return Jwts.parser().setSigningKey(publicKey).parseJws(token.replace("Bearer ", "")).getBody(); } catch (Exception e){ throw new AuthenticationException(String.format("Failed to check user authorization for token: %s", token), e); } } public boolean validateRole(String token,List<String> userRoles, NimbleRole[] requiredRoles) { for (NimbleRole requiredRole : requiredRoles) { for (String userRole : userRoles) { if (userRole.contentEquals(requiredRole.getName())) { return true; } } } logger.warn("Token: {} does not include one of the roles: {}",token, Arrays.asList(requiredRoles).stream().map(role -> role.getName()).collect(Collectors.joining(", ","[","]"))); return false; } public Claims getClaims(String token) throws AuthenticationException { try { String[] split_string = token.split("\\."); String base64EncodedBody = split_string[1]; Base64 base64Url = new Base64(true); String body = new String(base64Url.decode(base64EncodedBody)); Map<String, Object> map = JsonSerializationUtility.getObjectMapper().readValue(body,new TypeReference<Map<String, Object>>() { }); return Jwts.claims(map); } catch (IOException e) { throw new AuthenticationException(String.format("Failed to get Claims for token: %s", token), e); } }} |