OCS Inventory NG Directory Traversal

`OCS Inventory NG - Directory Traversal (May 30 2009)  
_______________________________________________________________________________  
  
  
* Product  
  
Open Computer and Software (OCS) Inventory NG  
(http://www.ocsinventory-ng.org)  
  
  
* Vulnerable Versions  
  
OCS Inventory NG 1.02 (Unix)  
  
  
* Vendor Status  
  
Vendor has been notified and the vulnerability has been fixed in  
version 1.02.1.  
  
  
* Details  
  
The Open Computer and Software (OCS) Inventory Next Generation (NG)  
provides relevant inventory information about system configurations and  
software on the network. The server can be managed using a web  
interface. It is possible for unauthenticated users to extract arbitrary  
files from the hosting system due to inadequate file handling in cvs.php.  
  
cvs.php:  
  
} elseif (isset($_GET['log'])){  
if (file_exists($_GET['rep'].$_GET['log'])){  
$tab = file($_GET['rep'].$_GET['log']);  
while(list($cle,$val) = each($tab)) {  
$toBeWritten .= $val."\r\n";  
}  
$filename=$_GET['log'];  
}  
}  
  
  
* Impact  
  
Attackers may be able to read arbitrary files from the hosting system.  
  
  
* Exploit  
  
The vulnerability can be exploited by just using a web browser:  
  
http://example.org/ocsreports/cvs.php?log=/etc/passwd  
  
  
  
`