Merge pull request #43942 from nextcloud/fix/43612/avoid-pwd-confirm-sso

fix(Session): avoid password confirmation on SSO

9 files changed, 92 insertions, 43 deletions

diff --git a/lib/private/AppFramework/DependencyInjection/DIContainer.php b/lib/private/AppFramework/DependencyInjection/DIContainer.php
index 9e3119d262a..4add17396b0 100644
--- a/lib/private/AppFramework/DependencyInjection/DIContainer.php
+++ b/lib/private/AppFramework/DependencyInjection/DIContainer.php
@@ -249,7 +249,8 @@ class DIContainer extends SimpleContainer implements IAppContainer {
 					$c->get(IControllerMethodReflector::class),
 					$c->get(ISession::class),
 					$c->get(IUserSession::class),
-					$c->get(ITimeFactory::class)
+					$c->get(ITimeFactory::class),
+					$c->get(\OC\Authentication\Token\IProvider::class),
 				)
 			);
 			$dispatcher->registerMiddleware(
diff --git a/lib/private/AppFramework/Middleware/Security/PasswordConfirmationMiddleware.php b/lib/private/AppFramework/Middleware/Security/PasswordConfirmationMiddleware.php
index b95a69dc3e2..5ff9d7386da 100644
--- a/lib/private/AppFramework/Middleware/Security/PasswordConfirmationMiddleware.php
+++ b/lib/private/AppFramework/Middleware/Security/PasswordConfirmationMiddleware.php
@@ -7,12 +7,18 @@ namespace OC\AppFramework\Middleware\Security;
 
 use OC\AppFramework\Middleware\Security\Exceptions\NotConfirmedException;
 use OC\AppFramework\Utility\ControllerMethodReflector;
+use OC\Authentication\Token\IProvider;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\Attribute\PasswordConfirmationRequired;
 use OCP\AppFramework\Middleware;
 use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\Authentication\Exceptions\ExpiredTokenException;
+use OCP\Authentication\Exceptions\InvalidTokenException;
+use OCP\Authentication\Exceptions\WipeTokenException;
+use OCP\Authentication\Token\IToken;
 use OCP\ISession;
 use OCP\IUserSession;
+use OCP\Session\Exceptions\SessionNotAvailableException;
 use OCP\User\Backend\IPasswordConfirmationBackend;
 use ReflectionMethod;
 
@@ -27,6 +33,7 @@ class PasswordConfirmationMiddleware extends Middleware {
 	private $timeFactory;
 	/** @var array */
 	private $excludedUserBackEnds = ['user_saml' => true, 'user_globalsiteselector' => true];
+	private IProvider $tokenProvider;
 
 	/**
 	 * PasswordConfirmationMiddleware constructor.
@@ -39,11 +46,14 @@ class PasswordConfirmationMiddleware extends Middleware {
 	public function __construct(ControllerMethodReflector $reflector,
 		ISession $session,
 		IUserSession $userSession,
-		ITimeFactory $timeFactory) {
+		ITimeFactory $timeFactory,
+		IProvider $tokenProvider,
+	) {
 		$this->reflector = $reflector;
 		$this->session = $session;
 		$this->userSession = $userSession;
 		$this->timeFactory = $timeFactory;
+		$this->tokenProvider = $tokenProvider;
 	}
 
 	/**
@@ -68,8 +78,21 @@ class PasswordConfirmationMiddleware extends Middleware {
 				$backendClassName = $user->getBackendClassName();
 			}
 
+			try {
+				$sessionId = $this->session->getId();
+				$token = $this->tokenProvider->getToken($sessionId);
+			} catch (SessionNotAvailableException|InvalidTokenException|WipeTokenException|ExpiredTokenException) {
+				// States we do not deal with here.
+				return;
+			}
+			$scope = $token->getScopeAsArray();
+			if (isset($scope[IToken::SCOPE_SKIP_PASSWORD_VALIDATION]) && $scope[IToken::SCOPE_SKIP_PASSWORD_VALIDATION] === true) {
+				// Users logging in from SSO backends cannot confirm their password by design
+				return;
+			}
+
 			$lastConfirm = (int) $this->session->get('last-password-confirm');
-			// we can't check the password against a SAML backend, so skip password confirmation in this case
+			// TODO: confirm excludedUserBackEnds can go away and remove it
 			if (!isset($this->excludedUserBackEnds[$backendClassName]) && $lastConfirm < ($this->timeFactory->getTime() - (30 * 60 + 15))) { // allow 15 seconds delay
 				throw new NotConfirmedException();
 			}
diff --git a/lib/private/Authentication/Token/PublicKeyToken.php b/lib/private/Authentication/Token/PublicKeyToken.php
index 0b7a2589f3e..961b7191d84 100644
--- a/lib/private/Authentication/Token/PublicKeyToken.php
+++ b/lib/private/Authentication/Token/PublicKeyToken.php
@@ -9,6 +9,7 @@ declare(strict_types=1);
 namespace OC\Authentication\Token;
 
 use OCP\AppFramework\Db\Entity;
+use OCP\Authentication\Token\IToken;
 
 /**
  * @method void setId(int $id)
@@ -162,7 +163,7 @@ class PublicKeyToken extends Entity implements INamedToken, IWipeableToken {
 		$scope = json_decode($this->getScope(), true);
 		if (!$scope) {
 			return [
-				'filesystem' => true
+				IToken::SCOPE_FILESYSTEM => true
 			];
 		}
 		return $scope;
diff --git a/lib/private/Authentication/Token/PublicKeyTokenProvider.php b/lib/private/Authentication/Token/PublicKeyTokenProvider.php
index 5363b82df69..767ece1e551 100644
--- a/lib/private/Authentication/Token/PublicKeyTokenProvider.php
+++ b/lib/private/Authentication/Token/PublicKeyTokenProvider.php
@@ -243,6 +243,7 @@ class PublicKeyTokenProvider implements IProvider {
 				OCPIToken::TEMPORARY_TOKEN,
 				$token->getRemember()
 			);
+			$newToken->setScope($token->getScopeAsArray());
 			$this->cacheToken($newToken);
 
 			$this->cacheInvalidHash($token->getToken());
diff --git a/lib/private/Lockdown/LockdownManager.php b/lib/private/Lockdown/LockdownManager.php
index 779b1ea2650..3b45709d5c9 100644
--- a/lib/private/Lockdown/LockdownManager.php
+++ b/lib/private/Lockdown/LockdownManager.php
@@ -5,7 +5,7 @@
  */
 namespace OC\Lockdown;
 
-use OC\Authentication\Token\IToken;
+use OCP\Authentication\Token\IToken;
 use OCP\ISession;
 use OCP\Lockdown\ILockdownManager;
 
@@ -60,6 +60,6 @@ class LockdownManager implements ILockdownManager {
 
 	public function canAccessFilesystem() {
 		$scope = $this->getScopeAsArray();
-		return !$scope || $scope['filesystem'];
+		return !$scope || $scope[IToken::SCOPE_FILESYSTEM];
 	}
 }
diff --git a/lib/private/Template/JSConfigHelper.php b/lib/private/Template/JSConfigHelper.php
index 2f2ff9d64e3..a41e99ae8c4 100644
--- a/lib/private/Template/JSConfigHelper.php
+++ b/lib/private/Template/JSConfigHelper.php
@@ -8,10 +8,15 @@ declare(strict_types=1);
 namespace OC\Template;
 
 use bantu\IniGetWrapper\IniGetWrapper;
+use OC\Authentication\Token\IProvider;
 use OC\CapabilitiesManager;
 use OC\Share\Share;
 use OCP\App\AppPathNotFoundException;
 use OCP\App\IAppManager;
+use OCP\Authentication\Exceptions\ExpiredTokenException;
+use OCP\Authentication\Exceptions\InvalidTokenException;
+use OCP\Authentication\Exceptions\WipeTokenException;
+use OCP\Authentication\Token\IToken;
 use OCP\Constants;
 use OCP\Defaults;
 use OCP\Files\FileInfo;
@@ -23,48 +28,30 @@ use OCP\ILogger;
 use OCP\ISession;
 use OCP\IURLGenerator;
 use OCP\IUser;
+use OCP\Session\Exceptions\SessionNotAvailableException;
 use OCP\Share\IManager as IShareManager;
 use OCP\User\Backend\IPasswordConfirmationBackend;
 use OCP\Util;
 
 class JSConfigHelper {
-	protected IL10N $l;
-	protected Defaults $defaults;
-	protected IAppManager $appManager;
-	protected ISession $session;
-	protected ?IUser $currentUser;
-	protected IConfig $config;
-	protected IGroupManager $groupManager;
-	protected IniGetWrapper $iniWrapper;
-	protected IURLGenerator $urlGenerator;
-	protected CapabilitiesManager $capabilitiesManager;
-	protected IInitialStateService $initialStateService;
 
 	/** @var array user back-ends excluded from password verification */
 	private $excludedUserBackEnds = ['user_saml' => true, 'user_globalsiteselector' => true];
 
-	public function __construct(IL10N $l,
-		Defaults $defaults,
-		IAppManager $appManager,
-		ISession $session,
-		?IUser $currentUser,
-		IConfig $config,
-		IGroupManager $groupManager,
-		IniGetWrapper $iniWrapper,
-		IURLGenerator $urlGenerator,
-		CapabilitiesManager $capabilitiesManager,
-		IInitialStateService $initialStateService) {
-		$this->l = $l;
-		$this->defaults = $defaults;
-		$this->appManager = $appManager;
-		$this->session = $session;
-		$this->currentUser = $currentUser;
-		$this->config = $config;
-		$this->groupManager = $groupManager;
-		$this->iniWrapper = $iniWrapper;
-		$this->urlGenerator = $urlGenerator;
-		$this->capabilitiesManager = $capabilitiesManager;
-		$this->initialStateService = $initialStateService;
+	public function __construct(
+		protected IL10N                $l,
+		protected Defaults             $defaults,
+		protected IAppManager          $appManager,
+		protected ISession             $session,
+		protected ?IUser               $currentUser,
+		protected IConfig              $config,
+		protected IGroupManager        $groupManager,
+		protected IniGetWrapper        $iniWrapper,
+		protected IURLGenerator        $urlGenerator,
+		protected CapabilitiesManager  $capabilitiesManager,
+		protected IInitialStateService $initialStateService,
+		protected IProvider            $tokenProvider,
+	) {
 	}
 
 	public function getConfig(): string {
@@ -130,9 +117,13 @@ class JSConfigHelper {
 		}
 
 		if ($this->currentUser instanceof IUser) {
-			$lastConfirmTimestamp = $this->session->get('last-password-confirm');
-			if (!is_int($lastConfirmTimestamp)) {
-				$lastConfirmTimestamp = 0;
+			if ($this->canUserValidatePassword()) {
+				$lastConfirmTimestamp = $this->session->get('last-password-confirm');
+				if (!is_int($lastConfirmTimestamp)) {
+					$lastConfirmTimestamp = 0;
+				}
+			} else {
+				$lastConfirmTimestamp = PHP_INT_MAX;
 			}
 		} else {
 			$lastConfirmTimestamp = 0;
@@ -287,4 +278,15 @@ class JSConfigHelper {
 
 		return $result;
 	}
+
+	protected function canUserValidatePassword(): bool {
+		try {
+			$token = $this->tokenProvider->getToken($this->session->getId());
+		} catch (ExpiredTokenException|WipeTokenException|InvalidTokenException|SessionNotAvailableException) {
+			// actually we do not know, so we fall back to this statement
+			return true;
+		}
+		$scope = $token->getScopeAsArray();
+		return !isset($scope[IToken::SCOPE_SKIP_PASSWORD_VALIDATION]) || $scope[IToken::SCOPE_SKIP_PASSWORD_VALIDATION] === false;
+	}
 }
diff --git a/lib/private/TemplateLayout.php b/lib/private/TemplateLayout.php
index 2e688f161bb..27e988711be 100644
--- a/lib/private/TemplateLayout.php
+++ b/lib/private/TemplateLayout.php
@@ -8,6 +8,7 @@
 namespace OC;
 
 use bantu\IniGetWrapper\IniGetWrapper;
+use OC\Authentication\Token\IProvider;
 use OC\Search\SearchQuery;
 use OC\Template\CSSResourceLocator;
 use OC\Template\JSConfigHelper;
@@ -225,7 +226,8 @@ class TemplateLayout extends \OC_Template {
 				\OC::$server->get(IniGetWrapper::class),
 				\OC::$server->getURLGenerator(),
 				\OC::$server->get(CapabilitiesManager::class),
-				\OCP\Server::get(IInitialStateService::class)
+				\OCP\Server::get(IInitialStateService::class),
+				\OCP\Server::get(IProvider::class),
 			);
 			$config = $jsConfigHelper->getConfig();
 			if (\OC::$server->getContentSecurityPolicyNonceManager()->browserSupportsCspV3()) {
diff --git a/lib/private/legacy/OC_User.php b/lib/private/legacy/OC_User.php
index e7708525c76..f9f751f7b14 100644
--- a/lib/private/legacy/OC_User.php
+++ b/lib/private/legacy/OC_User.php
@@ -5,7 +5,9 @@
  * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
  * SPDX-License-Identifier: AGPL-3.0-only
  */
+use OC\Authentication\Token\IProvider;
 use OC\User\LoginException;
+use OCP\Authentication\Token\IToken;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IGroupManager;
 use OCP\ISession;
@@ -166,6 +168,14 @@ class OC_User {
 
 				$userSession->createSessionToken($request, $uid, $uid, $password);
 				$userSession->createRememberMeToken($userSession->getUser());
+
+				if (empty($password)) {
+					$tokenProvider = \OC::$server->get(IProvider::class);
+					$token = $tokenProvider->getToken($userSession->getSession()->getId());
+					$token->setScope([IToken::SCOPE_SKIP_PASSWORD_VALIDATION => true]);
+					$tokenProvider->updateToken($token);
+				}
+
 				// setup the filesystem
 				OC_Util::setupFS($uid);
 				// first call the post_login hooks, the login-process needs to be
diff --git a/lib/public/Authentication/Token/IToken.php b/lib/public/Authentication/Token/IToken.php
index 4f232b83d4e..8c047280924 100644
--- a/lib/public/Authentication/Token/IToken.php
+++ b/lib/public/Authentication/Token/IToken.php
@@ -35,6 +35,15 @@ interface IToken extends JsonSerializable {
 	public const REMEMBER = 1;
 
 	/**
+	 * @since 30.0.0
+	 */
+	public const SCOPE_FILESYSTEM = 'filesystem';
+	/**
+	 * @since 30.0.0
+	 */
+	public const SCOPE_SKIP_PASSWORD_VALIDATION = 'password-unconfirmable';
+
+	/**
 	 * Get the token ID
 	 * @since 28.0.0
 	 */