K51390683 : PHP vulnerabilities CVE-2016-5094 and CVE-2016-5095

Security Advisory Description

• CVE-2016-5094

Integer overflow in the php_html_entities function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from the htmlspecialchars function.

• CVE-2016-5095

Integer overflow in the php_escape_html_entities_ex function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from a FILTER_SANITIZE_FULL_SPECIAL_CHARS filter_var call. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-5094.
Impact
Although BIG-IP and BIG-IQ software contains the vulnerable code, BIG-IP and BIG-IQ systems do not use the vulnerable code in a way that exposes the vulnerability in a standard default configuration. When exploited, the PHP module may encounter an out-of-memory error that affects the Configuration utility.