From 512bcc62fcb51a276cdf2e5009cada78e8bc100b Mon Sep 17 00:00:00 2001
From: Stian Thorgersen <stianst@gmail.com>
Date: Mon, 23 Sep 2024 11:51:02 +0000
Subject: [PATCH] Improve handling for loopback redirect-uri validation (#195) (#33189)
---
src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java | 22 ++++++++--------------
1 files changed, 8 insertions(+), 14 deletions(-)
diff --git a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java b/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
index 500cc2b..e2be2a8 100644
--- a/src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java
+++ b/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()) {
--
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