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PHP Improper Input Validation Vulnerability - CVE-2016-4538 - Vulnerability Database
PHP

PHP Improper Input Validation Vulnerability - CVE-2016-4538

Critical
Reference: CVE-2016-4538
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2016-4538
Title: PHP Improper Input Validation Vulnerability
Overview:

The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35 5.6.x before 5.6.21 and 7.x before 7.0.6 modifies certain data structures without considering whether they are copies of the _zero_ _one_ or _two_ global variable which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.