Security update for php53

Open Source Vulnerabilities SUSE-SU-2016:1310-1

This update for php53 fixes the following security issues: - CVE-2016-4073: A remote attacker could have caused denial of service, or possibly execute arbitrary code, due to incorrect handling of string length calculations in mb_strcut() (bsc#977003) - CVE-2015-8867: The PHP function openssl_random_pseudo_bytes() did not return cryptographically secure random bytes (bsc#977005) - CVE-2016-4070: The libxml_disable_entity_loader() setting was shared between threads, which could have resulted in XML external entity injection and entity expansion issues (bsc#976997) - CVE-2015-8866: A remote attacker could have caused denial of service due to incorrect handling of large strings in php_raw_url_encode() (bsc#976996)