Concrete5 <= 8.5.5 (Logging Settings) Phar Deserialization Vulnerability

61public function update_logging()
62{
63    $config = $this->app->make('config');
64    $request = $this->request;
65 
66    if (!$this->token->validate('update_logging')) {
67        return $this->showError($this->token->getErrorMessage());
68    }
69 
70    // Load in variables from the request
71    $mode = (string) $request->request->get('logging_mode') === 'advanced' ? 'advanced' : 'simple';
72    $handler = $mode === 'simple' ? (string) $request->request->get('handler', 'database') : null;
73    $logFile = $handler === 'file' ? (string) $request->request->get('logFile') : null;
74    $enableDashboardReport = $request->request->get('enable_dashboard_report') ? true : false;
75    $loggingLevel = strtoupper((string) $request->request->get('logging_level'));
76    $intLogErrorsPost = $request->request->get('ENABLE_LOG_ERRORS') === 1 ? 1 : 0;
77    $intLogEmailsPost = $request->request->get('ENABLE_LOG_EMAILS') === 1 ? 1 : 0;
78    $intLogApiPost = $request->request->get('ENABLE_LOG_API') === 1 ? 1 : 0;
79 
80 
81    // Handle 'file' based logging
82    if ($handler === 'file') {
83        $directory = dirname($logFile);
84 
85        // Validate the file name
86        if (pathinfo($logFile, PATHINFO_EXTENSION) !== 'log') {
87            return $this->showError(t('The filename provided must be a valid filename and end with .log'));
88        }
89 
90        // Validate the file path, create the log file if needed
91        if (!file_exists($logFile)) {