When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.28, 7.2.x below 7.2.17 and 7.3.x below 7.3.4 can be caused to read past allocated buffer in exif_iif_add_value function. This may lead to information disclosure or crash.
https://www.debian.org/security/2019/dsa-4529
https://usn.ubuntu.com/3953-2/
https://usn.ubuntu.com/3953-1/
https://support.f5.com/csp/article/K44590877
https://security.netapp.com/advisory/ntap-20190502-0001/
https://seclists.org/bugtraq/2019/Sep/38
https://lists.debian.org/debian-lts-announce/2019/05/msg00035.html
https://bugs.php.net/bug.php?id=77831
https://access.redhat.com/errata/RHSA-2019:3299
https://access.redhat.com/errata/RHSA-2019:2519
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