During an engagement, a penetration tester needs to break the key for the Wi-Fi network that uses WPA2 encryption. Which of the following attacks would accomplish this objective?
To break the key for a Wi-Fi network that uses WPA2 encryption, the penetration tester should use the KRACK (Key Reinstallation Attack) attack.
KRACK (Key Reinstallation Attack):
Definition: KRACK is a vulnerability in the WPA2 protocol that allows attackers to decrypt and potentially inject packets into a Wi-Fi network by manipulating and replaying cryptographic handshake messages.
Impact: This attack exploits flaws in the WPA2 handshake process, allowing an attacker to break the encryption and gain access to the network.
Other Attacks:
ChopChop: Targets WEP encryption, not WPA2.
Replay: Involves capturing and replaying packets to create effects such as duplicating transactions; it does not break WPA2 encryption.
Initialization Vector (IV): Related to weaknesses in WEP, not WPA2.
Pentest References:
Wireless Security: Understanding vulnerabilities in Wi-Fi encryption protocols, such as WPA2, and how they can be exploited.
KRACK Attack: A significant vulnerability in WPA2 that requires specific techniques to exploit.
By using the KRACK attack, the penetration tester can break WPA2 encryption and gain unauthorized access to the Wi-Fi network.
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