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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.

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# Exploit Title: Cibele Thinfinity VirtualUI 2.5.41.0 - User Enumeration
# Date: 13/12/2021
# Exploit Author: Daniel Morales, IT Security Team - ARHS Spikeseed
# Vendor Homepage: https://www.cybelesoft.com
# Software Link: https://www.cybelesoft.com/thinfinity/virtualui/
# Version: vulnerable < v3.0
# Tested on: Microsoft Windows
# CVE: CVE-2021-44848

How it works: By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest...
Payload: The vulnerable vector is "https://example.com/changePassword?username=USERNAME" where "USERNAME" need to be brute-forced.
Reference: https://github.com/cybelesoft/virtualui/issues/1