magento2: M 2.4.3-p1 - TypeError in AdminSessionsManager.php:338 (strtotime() expects parameter 1 to be string, int given)

Preconditions (*)

1. Magento 2.4.3-p1

Steps to reproduce (*)

1. When I try to login with SSO…

Expected result (*)

1. Login works

Actual result (*)

TypeError: strtotime() expects parameter 1 to be string, int given
#28 /var/www/share/meevo.io/releases/66/vendor/magento/module-security/Model/AdminSessionsManager.php(338): strtotime

magento2/app/code/Magento/Security/Model/AdminSessionsManager.php

private function lastProlongIsOldEnough()
    {
        $lastProlongTimestamp = strtotime($this->getCurrentSession()->getUpdatedAt());
        $nowTimestamp = $this->authSession->getUpdatedAt();

        $diff = $nowTimestamp - $lastProlongTimestamp;

        return (float) $diff > $this->getIntervalBetweenConsecutiveProlongs();
    }

In this file the line https://github.com/magento/magento2/compare/2.4.3...2.4.3-p1#diff-24fbc4a93c8c25f9ee036f3bf353c3dfca22ee7ff35d0797b6d1c1d7dc012386R6

declare(strict_types=1);

$this->getCurrentSession()->getUpdatedAt() returns int as timestamp… for example 1635087142

Here is the complete trace

TypeError: strtotime() expects parameter 1 to be string, int given
#28 /vendor/magento/module-security/Model/AdminSessionsManager.php(338): strtotime
#27 /vendor/magento/module-security/Model/AdminSessionsManager.php(338): Magento\Security\Model\AdminSessionsManager::lastProlongIsOldEnough
#26 /vendor/magento/module-security/Model/AdminSessionsManager.php(137): Magento\Security\Model\AdminSessionsManager::processProlong
#25 /vendor/magento/module-security/Model/Plugin/AuthSession.php(85): Magento\Security\Model\Plugin\AuthSession::aroundProlong
#24 /vendor/magento/framework/Interception/Interceptor.php(135): Magento\Backend\Model\Auth\Session\Interceptor::Magento\Framework\Interception\{closure}
#23 /vendor/magento/framework/Interception/Interceptor.php(153): Magento\Backend\Model\Auth\Session\Interceptor::___callPlugins
#22 /Magento/Backend/Model/Auth/Session/Interceptor.php(23): Magento\Backend\Model\Auth\Session\Interceptor::prolong
#21 /vendor/magento/module-backend/App/Action/Plugin/Authentication.php(127): Magento\Backend\App\Action\Plugin\Authentication::aroundDispatch
#20 /vendor/magento/framework/Interception/Interceptor.php(135): Magento\Backend\Controller\Adminhtml\Auth\Login\Interceptor::Magento\Framework\Interception\{closure}
#19 /vendor/magento/framework/Interception/Interceptor.php(153): Magento\Backend\Controller\Adminhtml\Auth\Login\Interceptor::___callPlugins
#18 /Magento/Backend/Controller/Adminhtml/Auth/Login/Interceptor.php(32): Magento\Backend\Controller\Adminhtml\Auth\Login\Interceptor::dispatch
#17 /vendor/magento/framework/App/FrontController.php(245): Magento\Framework\App\FrontController::getActionResponse
#16 /vendor/magento/framework/App/FrontController.php(212): Magento\Framework\App\FrontController::processRequest
#15 /vendor/magento/framework/App/FrontController.php(147): Magento\Framework\App\FrontController::dispatch
#14 /vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController\Interceptor::___callParent
#13 /vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor::Magento\Framework\Interception\{closure}
#12 /src/Infortis/ext-magento2-cgen/src/Plugin/Magento/Framework/App/FrontController.php(32): Infortis\Cgen\Plugin\Magento\Framework\App\FrontController::aroundDispatch
#11 /vendor/magento/framework/Interception/Interceptor.php(135): Magento\Framework\App\FrontController\Interceptor::Magento\Framework\Interception\{closure}
#10 /vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor::___callPlugins
#9 /Magento/Framework/App/FrontController/Interceptor.php(23): Magento\Framework\App\FrontController\Interceptor::dispatch
#8 /vendor/magento/framework/App/Http.php(116): Magento\Framework\App\Http::launch
#7 /vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http\Interceptor::___callParent
#6 /vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor::Magento\Framework\Interception\{closure}
#5 /vendor/justbetter/magento2-sentry/Plugin/GlobalExceptionCatcher.php(58): JustBetter\Sentry\Plugin\GlobalExceptionCatcher::aroundLaunch
#4 /vendor/magento/framework/Interception/Interceptor.php(135): Magento\Framework\App\Http\Interceptor::Magento\Framework\Interception\{closure}
#3 /vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor::___callPlugins
#2 /Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http\Interceptor::launch
#1 /vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Bootstrap::run
#0 /index.php(29): null

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Please provide Severity assessment for the Issue as Reporter. This information will help during Confirmation and Issue triage processes.

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.