src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java

@@ -18,6 +18,7 @@
package org.keycloak.protocol.oidc.utils;

import org.jboss.logging.Logger;
import org.keycloak.common.util.KeycloakUriBuilder;
import org.keycloak.common.util.UriUtils;
import org.keycloak.models.ClientModel;
import org.keycloak.models.Constants;
@@ -28,7 +29,9 @@
import org.keycloak.services.util.ResolveRelative;

import java.net.URI;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
import java.util.regex.Pattern;
@@ -38,6 +41,8 @@
 */
public class RedirectUtils {

    public static final Set<String> LOOPBACK_INTERFACES = new HashSet<>(Arrays.asList("localhost", "127.0.0.1", "[::1]"));

    private static final Logger logger = Logger.getLogger(RedirectUtils.class);

    public static String verifyRedirectUri(KeycloakSession session, String redirectUri, ClientModel client) {
@@ -95,20 +100,9 @@

            String valid = matchesRedirects(resolveValidRedirects, r, allowWildcards);

            if (valid == null && (r.startsWith(Constants.INSTALLED_APP_URL) || r.startsWith(Constants.INSTALLED_APP_LOOPBACK)) && r.indexOf(':', Constants.INSTALLED_APP_URL.length()) >= 0) {
                int i = r.indexOf(':', Constants.INSTALLED_APP_URL.length());

                StringBuilder sb = new StringBuilder();
                sb.append(r.substring(0, i));

                i = r.indexOf('/', i);
                if (i >= 0) {
                    sb.append(r.substring(i));
                }

                r = sb.toString();

                valid = matchesRedirects(resolveValidRedirects, r, allowWildcards);
            if (valid == null && "http".equals(originalRedirect.getScheme()) && LOOPBACK_INTERFACES.contains(originalRedirect.getHost())) {
                String redirectWithDefaultPort = KeycloakUriBuilder.fromUri(originalRedirect).port(80).buildAsString();
                valid = matchesRedirects(resolveValidRedirects, redirectWithDefaultPort, allowWildcards);
            }

            if (valid != null && !originalRedirect.isAbsolute()) {