OCS Inventory NG - Directory Traversal  (May 30 2009)
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* 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