php is vulnerable to denial of service (DoS) attacks. The vulnerability exists as the scan function in ext/date/lib/parse_iso_intervals.c in PHP through 5.5.6 does not properly restrict creation of DateInterval objects, which might allow remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted interval specification.
git.php.net/?p=php-src.git;a=commit;h=12fe4e90be7bfa2a763197079f68f5568a14e071
lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
lists.opensuse.org/opensuse-updates/2013-12/msg00125.html
lists.opensuse.org/opensuse-updates/2013-12/msg00126.html
rhn.redhat.com/errata/RHSA-2014-1765.html
www.debian.org/security/2013/dsa-2816
www.ubuntu.com/usn/USN-2055-1
access.redhat.com/security/updates/classification/#important
bugs.php.net/bug.php?id=66060
h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322
rhn.redhat.com/errata/RHSA-2014-1765.html
support.apple.com/HT204659