Description
PHP 5.2.0 and 4.4 allows local users to bypass safe_mode and open_basedir restrictions via a malicious path and a null byte before a ";" in a session_save_path argument, followed by an allowed path, which causes a parsing inconsistency in which PHP validates the allowed path but sets session.save_path to the malicious path.
Remediation
References
Related Vulnerabilities
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PostgreSQL Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-15098)
Zikula Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2010-4729)