CVE-2019-14474 : Exploit Details and Defense Strategies
Learn about CVE-2019-14474 affecting eQ-3 Homematic CCU3 devices. Understand the Denial of Service vulnerability in the 'Call()' function of the ReGa core logic process and how to mitigate it.
The eQ-3 Homematic CCU3 version 3.47.15 and earlier is vulnerable to a Denial of Service attack due to an issue in the 'Call()' function of the ReGa core logic process. Attackers can exploit this vulnerability through inadequate input validation and improper authorization.
Understanding CVE-2019-14474
This CVE identifies a security vulnerability in the eQ-3 Homematic CCU3 device.
What is CVE-2019-14474?
The vulnerability in the 'Call()' function of the ReGa core logic process allows attackers to launch a Denial of Service attack by exploiting inadequate input validation and improper authorization.
The Impact of CVE-2019-14474
The vulnerability enables attackers to initiate a Denial of Service attack on the affected device, compromising its availability and potentially disrupting its functionality.
Technical Details of CVE-2019-14474
The technical aspects of the vulnerability are as follows:
Vulnerability Description
- The vulnerability exists in the 'Call()' function of the ReGa core logic process.
- It results from inadequate input validation.
- Attackers can exploit session IDs obtained from CVE-2019-9583 or valid accounts to conduct the attack.
Affected Systems and Versions
- Product: eQ-3 Homematic CCU3
- Versions affected: 3.47.15 and earlier
Exploitation Mechanism
- Attackers can exploit the vulnerability by initiating a Denial of Service attack through the 'Call()' function of the ReGa core logic process.
Mitigation and Prevention
Protecting against CVE-2019-14474 involves taking immediate steps and implementing long-term security practices:
Immediate Steps to Take
- Apply security patches provided by the vendor.
- Monitor network traffic for any suspicious activity.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing.
- Educate users on cybersecurity best practices.
- Implement network segmentation to limit the impact of potential attacks.
- Consider implementing additional security measures such as intrusion detection systems.
Patching and Updates
- Stay informed about security updates and patches released by the vendor.
- Apply patches promptly to mitigate the risk of exploitation.