CVE-2018-0415 : What You Need to Know

A vulnerability in the Extensible Authentication Protocol over LAN (EAPOL) implementation in Cisco Small Business 100 Series and 300 Series Wireless Access Points could lead to a denial of service (DoS) attack.

Understanding CVE-2018-0415

This CVE involves a flaw in the EAPOL functionality of specific Cisco wireless access points, potentially allowing an attacker to disrupt the device's operation.

What is CVE-2018-0415?

The vulnerability stems from incorrect handling of EAPOL frames, enabling an authenticated attacker in close proximity to trigger a DoS scenario by sending crafted EAPOL frames to the target device.

The Impact of CVE-2018-0415

Exploiting this vulnerability could result in disassociating all connected stations (STAs) from the access point, hindering new association requests and causing a DoS situation on the affected device.

Technical Details of CVE-2018-0415

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw lies in the EAPOL implementation of Cisco Small Business 100 Series and 300 Series Wireless Access Points, allowing an attacker to disrupt the AP's operation through carefully crafted EAPOL frames.

Affected Systems and Versions

Product: Small Business 100 Series Wireless Access Points
Vendor: Cisco Systems, Inc.
Affected Version: Unspecified
Product: Small Business 300 Series Wireless Access Points
Vendor: Cisco Systems, Inc.
Affected Version: Unspecified

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to be authenticated and in close proximity to the target device to send a series of specific EAPOL frames, triggering the DoS condition.

Mitigation and Prevention

Protecting systems from CVE-2018-0415 involves immediate and long-term security measures.

Immediate Steps to Take

Apply vendor-provided patches promptly to mitigate the vulnerability.
Monitor network traffic for any signs of EAPOL frame manipulation.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Regularly update and patch all network devices to prevent known vulnerabilities.
Conduct security awareness training to educate users on identifying suspicious network activities.
Employ intrusion detection and prevention systems to monitor and block malicious traffic.
Follow best practices for wireless network security to enhance overall protection.

Patching and Updates

Regularly check for security advisories from Cisco Systems, Inc., and apply recommended patches to ensure the security of wireless access points.