CVE-2019-14473 : Security Advisory and Response

The eQ-3 Homematic CCU2 and CCU3 devices are affected by a vulnerability that allows unauthorized users to escalate their privileges and perform critical actions.

Understanding CVE-2019-14473

The vulnerability in the eQ-3 Homematic CCU2 and CCU3 devices allows users with lower privileges to gain admin-level access.

What is CVE-2019-14473?

The eQ-3 Homematic CCU2 and CCU3 devices lack proper authorization checks, enabling users with guest or user level privileges to create new accounts with admin access and perform unauthorized actions.

The Impact of CVE-2019-14473

Unauthorized users can exploit this vulnerability to view service messages, clear system protocols, and make changes or deletions to internal programs, compromising the security and integrity of the devices.

Technical Details of CVE-2019-14473

The technical aspects of the vulnerability in the eQ-3 Homematic CCU2 and CCU3 devices.

Vulnerability Description

The devices use session IDs for authentication but do not have adequate authorization mechanisms, allowing privilege escalation.

Affected Systems and Versions

Product: eQ-3 Homematic CCU2 and CCU3
Versions: All versions are affected

Exploitation Mechanism

Unauthorized users with guest or user level privileges can exploit the lack of proper authorization checks to gain admin-level access and perform unauthorized actions.

Mitigation and Prevention

Steps to mitigate and prevent the exploitation of CVE-2019-14473.

Immediate Steps to Take

Implement strong password policies and regularly update passwords
Monitor account activities for any suspicious behavior
Restrict access to critical functions to authorized personnel only

Long-Term Security Practices

Conduct regular security assessments and audits
Keep the devices' firmware up to date with the latest security patches

Patching and Updates

Apply patches and updates provided by the vendor to address the vulnerability and enhance device security