Spring/spring-authorization-server
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Allow localhost in redirect_uri

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Closes gh-651
This commit is contained in:
Joe Grandja
2023-04-05 15:13:05 -04:00
parent c0f0d7700a
commit ef4c5d7b6f
2 changed files with 7 additions and 40 deletions
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26
oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2AuthorizationCodeRequestAuthenticationValidator.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2020-2022 the original author or authors.
* Copyright 2020-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -100,23 +100,8 @@ public final class OAuth2AuthorizationCodeRequestAuthenticationValidator impleme
authorizationCodeRequestAuthentication, registeredClient);
}
String requestedRedirectHost = requestedRedirect.getHost();
if (requestedRedirectHost == null || requestedRedirectHost.equals("localhost")) {
// As per https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-07#section-9.7.1
// While redirect URIs using localhost (i.e., "http://localhost:{port}/{path}")
// function similarly to loopback IP redirects described in Section 10.3.3,
// the use of "localhost" is NOT RECOMMENDED.
OAuth2Error error = new OAuth2Error(
OAuth2ErrorCodes.INVALID_REQUEST,
"localhost is not allowed for the redirect_uri (" + requestedRedirectUri + "). " +
"Use the IP literal (127.0.0.1) instead.",
"https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-07#section-9.7.1");
throwError(error, OAuth2ParameterNames.REDIRECT_URI,
authorizationCodeRequestAuthentication, registeredClient);
}
if (!isLoopbackAddress(requestedRedirectHost)) {
// As per https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-07#section-9.7
if (!isLoopbackAddress(requestedRedirect.getHost())) {
// As per https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics-22#section-4.1.3
// When comparing client redirect URIs against pre-registered URIs,
// authorization servers MUST utilize exact string matching.
if (!registeredClient.getRedirectUris().contains(requestedRedirectUri)) {
@@ -124,7 +109,7 @@ public final class OAuth2AuthorizationCodeRequestAuthenticationValidator impleme
authorizationCodeRequestAuthentication, registeredClient);
}
} else {
// As per https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-07#section-10.3.3
// As per https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-08#section-8.4.2
// The authorization server MUST allow any port to be specified at the
// time of the request for loopback IP redirect URIs, to accommodate
// clients that obtain an available ephemeral port from the operating
@@ -157,6 +142,9 @@ public final class OAuth2AuthorizationCodeRequestAuthenticationValidator impleme
}
private static boolean isLoopbackAddress(String host) {
if (!StringUtils.hasText(host)) {
return false;
}
// IPv6 loopback address should either be "0:0:0:0:0:0:0:1" or "::1"
if ("[0:0:0:0:0:0:0:1]".equals(host) || "[::1]".equals(host)) {
return true;