Description
The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation during initial error checking, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6838.
Remediation
References
Related Vulnerabilities
WordPress Plugin Wp Multiple Meta Box SQL Injection (1.0.0)
WordPress Plugin Quiz and Survey Master (QSM)-Easy Quiz and Survey Maker SQL Injection (7.1.11)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2012-4408)
PHP Other Vulnerability (CVE-2006-4023)
Jenkins Incorrect Authorization Vulnerability (CVE-2018-1999047)