CVE-2019-5062 : Vulnerability Insights and Analysis

A vulnerability has been identified in hostapd version 2.6 on a Raspberry Pi that can be exploited for denial-of-service purposes.

Understanding CVE-2019-5062

This CVE involves a vulnerability in the way hostapd 2.6 handles the security state of 802.11w for connected clients.

What is CVE-2019-5062?

The vulnerability allows an attacker to cause denial-of-service by deauthenticating stations using 802.11w through mimicking an incomplete new association.

The Impact of CVE-2019-5062

CVSS Base Score: 7.4 (High)
Attack Vector: Adjacent Network
Availability Impact: High
Scope: Changed
Privileges Required: None
Attack Complexity: Low
Vector String: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE ID: CWE-440 (Expected Behavior Violation)

Technical Details of CVE-2019-5062

Vulnerability Description

The vulnerability in hostapd 2.6 allows attackers to exploit the 802.11w security state handling, leading to denial-of-service attacks.

Affected Systems and Versions

Affected Product: W1.f1
Affected Version: hostapd version 2.6 on a Raspberry Pi

Exploitation Mechanism

Attackers can exploit this vulnerability by mimicking an incomplete new association, causing deauthentication of stations using 802.11w.

Mitigation and Prevention

Immediate Steps to Take

Update hostapd to a patched version
Monitor network for any unusual deauthentication activities

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks
Regularly update and patch all network devices

Patching and Updates

Apply patches provided by the vendor to address the vulnerability