CVE-2019-17389 : Exploit Details and Defense Strategies

RIOT 2019.07 contains a vulnerability in the MQTT-SN implementation that allows an attacker to disrupt the functionality of a RIOT MQTT-SN client.

Understanding CVE-2019-17389

The issue in RIOT 2019.07 is related to a flaw in the MQTT-SN implementation, allowing an adversary to disrupt the client's functionality.

What is CVE-2019-17389?

In RIOT 2019.07, errors during a read operation on a UDP socket in the MQTT-SN implementation can lead to the termination of the receive loop, enabling an attacker to disrupt the client.

The Impact of CVE-2019-17389

Exploiting this vulnerability can cause a disruption in the functionality of a RIOT MQTT-SN client until the device is rebooted.

Technical Details of CVE-2019-17389

RIOT 2019.07 vulnerability details and affected systems.

Vulnerability Description

The flaw in the MQTT-SN implementation allows an attacker to disrupt the client's functionality by sending a large packet, leading to a termination of the receive loop.

Affected Systems and Versions

Affected Version: RIOT 2019.07
Product: RIOT
Vendor: N/A

Exploitation Mechanism

Attacker exploits errors in a read operation on a UDP socket
Sends a large packet to disrupt the client

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-17389 vulnerability.

Immediate Steps to Take

Apply patches or updates provided by RIOT
Monitor network traffic for any suspicious activities

Long-Term Security Practices

Regularly update RIOT software to the latest version
Implement network segmentation to limit the impact of potential attacks

Patching and Updates

Stay informed about security updates from RIOT
Apply patches promptly to address known vulnerabilities