Synaman 4.0 build 1488 (authenticated) crosssite scripting Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2018-09-12 | Type : webapps | Platform : windows
This exploit / vulnerability Synaman 4.0 build 1488 (authenticated) crosssite scripting is for educational purposes only and if it is used you will do on your own risk!

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# Exploit Author: bzyo
# CVE: CVE-2018-10763
# Twitter: @bzyo_
# Exploit Title: SynaMan 4.0 - Authenticated Cross Site Scripting (XSS)
# Date: 09-12-18
# Vulnerable Software: SynaMan 4.0 build 1488
# Vendor Homepage: http://web.synametrics.com/SynaMan.htm
# Version: 4.0 build 1488
# Software Link: http://web.synametrics.com/SynaManDownload.htm
# Tested On: Windows 7 x86

Description
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SynaMan 4.0 suffers from Authenticated Cross Site Scripting (XSS)


Prerequisites
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Admin access to Synaman web console

Proof of Concept
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From Configuration > Advanced Configuration > Partial Branding
- Main heading
- Sub heading

If one were to apply the following XSS payload in either of the fields, alert pop-ups with xss would be present on navigation throughout the web app

<script>alert("xss");</script>

While Chrome does block the XSS payload on apply, simply hitting the back button and selecting "Explore" the payload is stored


Timeline
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05-07-18: Vendor notified of vulnerabilities
05-08-18: Vendor responded and will fix
07-25-18: Vendor fixed in new release
09-12-18: Submitted public disclosure