Certified Ethical Hacker (CEH v11) — Question 398

In this attack, an adversary tricks a victim into reinstalling an already-in-use key. This is achieved by manipulating and replaying cryptographic handshake messages. When the victim reinstalls the key, associated parameters such as the incremental transmit packet number and receive packet number are reset to their initial values.
What is this attack called?

Answer options

• A. Evil twin
• B. Chop chop attack
• C. Wardriving
• D. KRACK

Correct answer: D

Explanation

The correct answer is KRACK, which specifically refers to a vulnerability that exploits the reinstallation of keys in the WPA2 protocol. The other options, such as Evil twin, Chop chop attack, and Wardriving, refer to different types of network attacks and do not involve the reinstallation of cryptographic keys in the same manner.