Christey> There is active disagreement regarding whether this satisfies the
criteria for inclusion in CVE, because the attack vectors require
function parameters that are typically controlled only by the
application developer, not an external attacker. This would mean that
only the PHP application owner could exploit it.
Since various PHP functions already allow the application owner to
execute commands, no additional privileges would be gained by
exploiting such a bug. However, if safe_mode is enabled in PHP, then
the PHP functions related to execution are restricted
(e.g. shell_exec()). Thus, exploitation may allow the PHP application
owner to execute code *despite* the configured restrictions imposed by
safe mode, which then qualifies this as a vulnerability.