The phar_parse_zipfile function in zip.c in the PHAR extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read and application crash) by placing a PK\x05\x06 signature at an invalid location.
https://support.apple.com/HT206567
https://php.net/ChangeLog-5.php
https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=a6fdc5bb27b20d889de0cd29318b3968aabb57bd
https://bugs.php.net/bug.php?id=71498
http://www.ubuntu.com/usn/USN-2952-2
http://www.ubuntu.com/usn/USN-2952-1
http://www.securitytracker.com/id/1035255
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00058.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00057.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00052.html
http://lists.apple.com/archives/security-announce/2016/May/msg00004.html