Multiple security issues were found in PHP, a widely-used open source general purpose scripting language which could result in information disclosure, denial of service or incorrect validation of path names.
For the oldstable distribution (stretch), these problems have been fixed in version 7.0.33-0+deb9u7.
php7.0 패키지를 업그레이드 하는 게 좋음.
For the detailed security status of php7.0 please refer to its security tracker page at: \ https://security-tracker.debian.org/tracker/php7.0