LanSweeper 6.0.100.75 - Cross-Site Scripting Vulnerability

LanSweeper - Cross Site Scripting and HTMLi
 
Title: Vulnerability in LanSweeper
Date: 16-11-2017
Status: Vendor contacted, patch available
Author: Miguel Mendez Z
Vendor Homepage: http://www.lansweeper.com
Version: 6.0.100.75
CVE: CVE-2017-16841
 
Vulnerability description -------------------------
 
LanSweeper 6.0.100.75 has XSS via the description parameter to "/Calendar/CalendarActions.aspx".
Take control of the browser using the xss shell or perform malware attacks on users.
 
Vulnerable variable:
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"http://victim.com/Calendar/CalendarActions.aspx?action=scheduleinfo&id=2&__VIEWSTATE=&title=Test+Lansweeper&description=XSS/HTMLI&type=1&startdate=13/10/2017&txtStart=19:30&enddate=13/10/2017&txtEnd=21:30&reminder=15&repeattype=1&amount=1&repeatby=0&monthday=1&monthweekday=1&monthweekdayday=1&ends=1&occurrences=15&repeatenddate=&agents={"14":{"id":14,"editAllowed":true}}&teams=&delete=false"
 
"http://victim.com/Scanning/report.aspx?det=web50accessdeniederrors&title=XSS/HTMLI"
 
"http://victim.com/Software/report.aspx?det=XSS/HTMLI&title=Linux Software"
 
 
Poc:
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https://www.youtube.com/watch?v=u213EqTSsXQ

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