CVE-2019-11777 : Vulnerability Insights and Analysis

Version 1.2.0 of the Eclipse Paho Java client library has a vulnerability that could allow a malicious MQTT server to impersonate another server and provide incorrect information to the client library.

Understanding CVE-2019-11777

This CVE involves a failure to properly validate the MQTT server's host name verification when connecting using TLS.

What is CVE-2019-11777?

The vulnerability in Eclipse Paho Java client library version 1.2.0 allows for potential impersonation of MQTT servers.

The Impact of CVE-2019-11777

Malicious MQTT servers could deliver inaccurate information to the client library.

Technical Details of CVE-2019-11777

This section provides more technical insights into the vulnerability.

Vulnerability Description

Eclipse Paho Java client library version 1.2.0 does not validate the result of the MQTT server's host name verification, enabling server impersonation.

Affected Systems and Versions

Product: Eclipse Paho
Vendor: The Eclipse Foundation
Affected Version: 1.2.0

Exploitation Mechanism

Malicious MQTT servers can exploit this vulnerability to impersonate legitimate servers and provide false information.

Mitigation and Prevention

Protecting systems from CVE-2019-11777 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade to a patched version of Eclipse Paho Java client library.
Implement host name verification checks in MQTT connections.

Long-Term Security Practices

Regularly update software libraries to the latest secure versions.
Conduct security audits to identify and address vulnerabilities proactively.

Patching and Updates

Apply patches provided by The Eclipse Foundation to address the vulnerability in version 1.2.0 of Eclipse Paho Java client library.