CVE-2019-11892 : Vulnerability Insights and Analysis

A potential vulnerability related to improper access control in the JSON-RPC interface of the Bosch Smart Home Controller (SHC) has been identified. This CVE affects the Smart Home Controller by Bosch with versions before 9.8.905.

Understanding CVE-2019-11892

This CVE involves a security issue in the JSON-RPC interface of the Bosch Smart Home Controller, potentially allowing unauthorized access to the device's configuration.

What is CVE-2019-11892?

The vulnerability in the JSON-RPC interface of the Bosch Smart Home Controller (SHC) before version 9.8.905 could enable unauthorized access to read or modify the SHC's configuration, trigger, and restore backups. Exploiting this vulnerability requires successful pairing of an app or service, which in turn necessitates user interaction.

The Impact of CVE-2019-11892

The vulnerability has a CVSS v3.0 base score of 7.5, indicating a high severity level. The impact includes high confidentiality, integrity, and availability impacts, with no privileges required for exploitation.

Technical Details of CVE-2019-11892

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is categorized as CWE-284: Improper Access Control, highlighting the issue's nature.

Affected Systems and Versions

Affected Product: Smart Home Controller
Vendor: Bosch
Affected Versions: Before 9.8.905

Exploitation Mechanism

The vulnerability resides in the JSON-RPC interface of the SHC.
Unauthorized access can lead to reading or modifying the SHC's configuration.
Successful pairing of an app or service by the adversary is required, which involves user interaction.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to ensure security.

Immediate Steps to Take

Update the Bosch Smart Home Controller to version 9.8.905 or later.
Monitor for any unauthorized access or modifications to the SHC's configuration.

Long-Term Security Practices

Regularly review and update access control mechanisms on IoT devices.
Educate users on secure pairing practices to prevent unauthorized access.

Patching and Updates

Apply security patches and updates provided by Bosch to address this vulnerability.