When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.29, 7.2.x below 7.2.18 and 7.3.x below 7.3.5 can be caused to read past allocated buffer in exif_process_IFD_TAG function. This may lead to information disclosure or crash.
https://www.debian.org/security/2019/dsa-4529
https://www.debian.org/security/2019/dsa-4527
https://usn.ubuntu.com/4009-1/
https://usn.ubuntu.com/3566-2/
https://security.netapp.com/advisory/ntap-20190517-0003/
https://seclists.org/bugtraq/2019/Sep/38
https://seclists.org/bugtraq/2019/Sep/35
https://lists.debian.org/debian-lts-announce/2019/05/msg00035.html
https://bugs.php.net/bug.php?id=77950
https://access.redhat.com/errata/RHSA-2019:3299
https://access.redhat.com/errata/RHSA-2019:2519
http://www.securityfocus.com/bid/108177
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00010.html