CVE-2021-36799 : Exploit Details and Defense Strategies

KNX ETS5 through 5.7.6 is impacted by a vulnerability where it uses a hard-coded password ETS5Password with a specific salt value, Ivan Medvedev. This issue allows local users to access project information. It is worth noting that this vulnerability affects only products that are no longer supported.

Understanding CVE-2021-36799

This section will provide insights into the nature and impact of CVE-2021-36799.

What is CVE-2021-36799?

CVE-2021-36799 refers to a security flaw in KNX ETS5 through version 5.7.6, which results from the usage of a hardcoded password, enabling unauthorized local access to project data.

The Impact of CVE-2021-36799

The vulnerability could lead to unauthorized disclosure of sensitive project information by allowing local users to read project data, posing a security risk to affected systems.

Technical Details of CVE-2021-36799

In this section, we will delve into the technical aspects of CVE-2021-36799.

Vulnerability Description

The vulnerability arises due to the hardcoded password ETS5Password and the specific salt value used, Ivan Medvedev, which can be exploited by local users to access project information.

Affected Systems and Versions

Products running KNX ETS5 up to version 5.7.6 are impacted by this vulnerability. It is essential to take appropriate measures to address this issue promptly.

Exploitation Mechanism

Local users can exploit the hardcoded password and salt value to unauthorizedly retrieve project details, emphasizing the need for immediate action to mitigate the risk.

Mitigation and Prevention

This section will guide users on mitigating and preventing the CVE-2021-36799 vulnerability.

Immediate Steps to Take

It is recommended to cease using unsupported products affected by this vulnerability and apply alternative security measures to protect sensitive project data.

Long-Term Security Practices

To enhance overall security posture, organizations should implement strong password policies, regular security audits, and keep software up to date to prevent similar security flaws.

Patching and Updates

Maintainers of KNX ETS5 software should release patches or updates addressing this hardcoded password and salt value issue promptly to safeguard users' project information.