CVE-2019-6241 Explained : Impact and Mitigation

Bevywise MQTTRoute version 1.1 build 1018-002 is vulnerable to a Denial of Service attack when a connect packet and a poorly formatted unsubscribe request packet are combined.

Understanding CVE-2019-6241

In Bevywise MQTTRoute 1.1 build 1018-002, a connect packet combined with a malformed unsubscribe request packet can be used to cause a Denial of Service attack against the broker.

What is CVE-2019-6241?

This CVE identifies a vulnerability in Bevywise MQTTRoute version 1.1 build 1018-002 that allows for a Denial of Service attack when specific packets are combined.

The Impact of CVE-2019-6241

The vulnerability can be exploited to disrupt the normal operation of the MQTT broker, potentially leading to service unavailability for legitimate users.

Technical Details of CVE-2019-6241

The technical aspects of the vulnerability are as follows:

Vulnerability Description

Vulnerability Type: Denial of Service
Affected Version: Bevywise MQTTRoute 1.1 build 1018-002
Attack Vector: Combination of connect packet and malformed unsubscribe request packet

Affected Systems and Versions

Product: Bevywise MQTTRoute
Version: 1.1 build 1018-002

Exploitation Mechanism

The vulnerability is triggered when a connect packet and a poorly formatted unsubscribe request packet are combined, causing the Denial of Service attack.

Mitigation and Prevention

To address CVE-2019-6241, follow these mitigation strategies:

Immediate Steps to Take

Implement network-level protections to filter out malicious packets.
Monitor network traffic for any signs of unusual packet combinations.

Long-Term Security Practices

Regularly update and patch the Bevywise MQTTRoute software to the latest version.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by Bevywise to fix the vulnerability and prevent exploitation.