CVE-2019-9583 : Security Advisory and Response

The eQ-3 Homematic CCU2 and CCU3 devices have a vulnerability that allows obtaining session IDs without requiring a login, potentially leading to a Denial of Service attack and other security risks.

Understanding CVE-2019-9583

This CVE involves a security flaw in eQ-3 Homematic CCU2 and CCU3 devices that can be exploited to obtain session IDs without authentication, posing significant security risks.

What is CVE-2019-9583?

The vulnerability in eQ-3 Homematic CCU2 and CCU3 devices allows attackers to acquire session IDs without the need for a login, enabling them to launch Denial of Service attacks and potentially initiate other malicious activities.

The Impact of CVE-2019-9583

The exploitation of this vulnerability can result in a Denial of Service attack and serve as a potential entry point for further security breaches on affected devices.

Technical Details of CVE-2019-9583

This section provides detailed technical information about the CVE-2019-9583 vulnerability.

Vulnerability Description

The vulnerability in eQ-3 Homematic CCU2 and CCU3 devices allows unauthorized access to session IDs, facilitating the execution of Denial of Service attacks and other malicious activities.

Affected Systems and Versions

The following versions of eQ-3 Homematic devices are affected:

CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15
CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15

Exploitation Mechanism

Attackers can exploit this vulnerability to obtain session IDs without authentication, potentially leading to Denial of Service attacks and serving as a starting point for further security breaches.

Mitigation and Prevention

Protecting systems from CVE-2019-9583 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update affected eQ-3 Homematic CCU2 and CCU3 devices to non-vulnerable versions if available.
Implement network segmentation to limit exposure of vulnerable devices.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all devices and software to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential security weaknesses.

Patching and Updates

Stay informed about security updates and patches released by eQ-3 for the affected devices.