Description
PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not ensure that pathnames lack %00 sequences, which might allow remote attackers to read or write to arbitrary files via crafted input to an application that calls (1) a DOMDocument save method or (2) the GD imagepsloadfont function, as demonstrated by a filename\0.html attack that bypasses an intended configuration in which client users may write to only .html files.
Remediation
References
Related Vulnerabilities
Moodle Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2016-3734)
WordPress Plugin AccessAlly Information Disclosure (3.5.6)
WordPress Plugin Controlled Admin Access Security Bypass (1.4.0)
WordPress Plugin E-Search Multiple Cross-Site Scripting Vulnerabilities (1.0)
Resin Application Server Improper Input Validation Vulnerability (CVE-2012-2965)