Description
PHP 5 before 5.2.3 does not enforce the open_basedir or safe_mode restriction in certain cases, which allows context-dependent attackers to determine the existence of arbitrary files by checking if the readfile function returns a string. NOTE: this issue might also involve the realpath function.
Remediation
References
Related Vulnerabilities
MySQL CVE-2017-10320 Vulnerability (CVE-2017-10320)
ownCloud Resource Management Errors Vulnerability (CVE-2015-6500)
PHP Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2010-3062)
WordPress Plugin Nifty Newsletters (Formerly Sola Newsletters) Cross-Site Request Forgery (4.0.23)