EC-Council Certified Ethical Hacker (CEH) v12Wireless Network HackingMedium
A penetration tester is evaluating the security of an industrial control system (ICS) wireless network that utilizes legacy 802.11b devices. The network is configured with WEP encryption. Which tool is specifically designed to exploit WEP's vulnerabilities by injecting packets and later cracking the key using statistical analysis of IVs?
- AMetasploit
- BKismet
- CAircrack-ng
- DWireshark
Show answer & explanationAnswer & explanation
Correct answer: C. Aircrack-ng
Aircrack-ng is a suite of tools specifically designed for cracking WEP and WPA/WPA2 keys. Its 'aircrack-ng' component uses various statistical attacks, including those based on IV analysis, to recover WEP keys by collecting sufficient data.
Why the other options are wrong
- A. Metasploit is a penetration testing framework with many modules, but Aircrack-ng is the specialized tool for WEP key cracking.
- B. Kismet is a wireless network detector, sniffer, and intrusion detection system, primarily for reconnaissance, not for WEP cracking.
- D. Wireshark is a packet analyzer for capturing and inspecting network traffic, not for cracking WEP keys.
Aircrack-ng for WEP Cracking
Aircrack-ng is a powerful suite of tools used for auditing and cracking WEP and WPA/WPA2 wireless networks. For WEP, it leverages vulnerabilities like weak Initialization Vectors (IVs) and packet injection to gather enough data to statistically derive the WEP key.
- Uses statistical attacks (e.g., FMS attack).
- Requires collecting a large number of IVs.
- Can perform packet injection to accelerate IV collection.
Memory trick: Aircrack-ng is the undisputed champion for WEP key cracking.