CVE-2019-5108 : Security Advisory and Response

A vulnerability in the Linux kernel before mainline version 5.3 allows for a denial-of-service attack. This CVE can be exploited by manipulating Authentication and Association Request packets.

Understanding CVE-2019-5108

This CVE involves a vulnerability in the Linux kernel that can lead to denial-of-service attacks.

What is CVE-2019-5108?

The vulnerability exists in the Linux kernel before mainline version 5.3
It can be triggered by an attacker manipulating Authentication and Association Request packets
The attacker can cause an access point (AP) to send IAPP location updates for stations before authentication is completed
This can result in denial-of-service scenarios like CAM table attacks or traffic flapping

The Impact of CVE-2019-5108

CVSS Base Score: 7.4 (High)
Attack Vector: Adjacent Network
Attack Complexity: Low
Availability Impact: High
Scope: Changed
Privileges Required: None

Technical Details of CVE-2019-5108

This section provides more technical insights into the CVE.

Vulnerability Description

An exploitable denial-of-service vulnerability in the Linux kernel
Attacker can trigger AP to send IAPP location updates before authentication completion

Affected Systems and Versions

Affected Product: Linux kernel
Affected Version: Linux 4.14.98-v7+

Exploitation Mechanism

Attacker manipulates Authentication and Association Request packets

Mitigation and Prevention

Protecting systems from CVE-2019-5108 is crucial.

Immediate Steps to Take

Apply patches provided by the vendor
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update the Linux kernel to the latest version
Implement network segmentation to limit the impact of potential attacks

Patching and Updates

Ensure timely installation of security updates and patches