Check if the installed PHP version has a fix for the nullbyte vulnerability

core/setup.php

@@ -18,6 +18,10 @@ $hasPostgreSQL = is_callable('pg_connect');
 $hasOracle = is_callable('oci_connect');
 $hasMSSQL = is_callable('sqlsrv_connect');
 $datadir = OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data');
+$vulnerableToNullByte = false;
+if(file_exists(__FILE__."\0Nullbyte")) { // Check if the used PHP version is vulnerable to the NULL Byte attack (CVE-2006-7243)
+	$vulnerableToNullByte = true;
+} 
 
 // Protect data directory here, so we can test if the protection is working
 OC_Setup::protectDataDirectory();
@@ -31,6 +35,7 @@ $opts = array(
 	'directory' => $datadir,
 	'secureRNG' => OC_Util::secureRNG_available(),
 	'htaccessWorking' => OC_Util::ishtaccessworking(),
+	'vulnerableToNullByte' => $vulnerableToNullByte,
 	'errors' => array(),
 );