The AliasHandler component in PostfixAdmin before 3.0.2 allows remote authenticated domain admins to delete protected aliases via the delete parameter to delete.php, involving a missing permission check.
lists.opensuse.org/opensuse-updates/2017-02/msg00076.html
www.openwall.com/lists/oss-security/2017/02/08/1
www.openwall.com/lists/oss-security/2017/02/09/1
www.securityfocus.com/bid/96142
github.com/postfixadmin/postfixadmin/blob/postfixadmin-3.0.2/CHANGELOG.TXT
github.com/postfixadmin/postfixadmin/pull/23
sourceforge.net/p/postfixadmin/mailman/message/35646827/