The acl_check function in phpGroupWare 0.9.16RC2 always returns True, even when mkdir does not behave as expected, which could allow remote…

The acl_check function in phpGroupWare 0.9.16RC2 always returns True, even when mkdir does not behave as expected, which could allow remote attackers to obtain sensitive information via WebDAV from users' home directories that lack .htaccess files, and possibly has other unknown impacts.