https://www.systemtek.co.uk/2018/08/php-exif_process_ifd_in_makernote-function-out-of-bounds-read-denial-of-service-vulnerability-cve-2018-14851/
PHP exif_process_IFD_in_MAKERNOTE Function Out-of-Bounds Read Denial of Service Vulnerability [CVE-2018-14851]