PHP Permissions Privileges and Access Controls Vulnerability - CVE-2008-7002
PHP 5.2.5 does not enforce (a) open_basedir and (b) safe_mode_exec_dir restrictions for certain functions which might allow local users to bypass intended access restrictions and call programs outside of the intended directory via the (1) exec (2) system (3) shell_exec (4) passthru or (5) popen functions possibly involving pathnames such as quotC:quot drive notation.