CVE-2019-18833 : Security Advisory and Response

Devices prior to version 1.9.0 of the Barco ClickShare Button R9861500D01 are vulnerable to information exposure due to a specific encryption key vulnerability.

Understanding CVE-2019-18833

Barco ClickShare Button R9861500D01 devices are susceptible to an information exposure vulnerability that could be exploited by attackers.

What is CVE-2019-18833?

The vulnerability in devices before version 1.9.0 of the Barco ClickShare Button R9861500D01 allows for information exposure. This issue arises during the generation and transmission of the encryption key for media content between a ClickShare Button and a ClickShare Base Unit.

The Impact of CVE-2019-18833

The vulnerability enables attackers to conduct Man-in-the-Middle attacks on the TLS connection, potentially leading to the acquisition of the encryption key and unauthorized access to sensitive information.

Technical Details of CVE-2019-18833

Barco ClickShare Button R9861500D01 devices are affected by a specific vulnerability that exposes them to information disclosure.

Vulnerability Description

The encryption key used for media content between a ClickShare Button and a ClickShare Base Unit is randomly generated and transmitted over a TLS connection. However, attackers can exploit this process through a Man-in-the-Middle attack to obtain the encryption key.

Affected Systems and Versions

Vulnerable devices: Barco ClickShare Button R9861500D01
Affected versions: Prior to 1.9.0

Exploitation Mechanism

Attackers can perform a Man-in-the-Middle attack on the TLS connection to intercept and acquire the encryption key, potentially compromising the confidentiality of the transmitted data.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-18833 vulnerability.

Immediate Steps to Take

Update Barco ClickShare Button R9861500D01 devices to version 1.9.0 or later to mitigate the information exposure risk.
Implement network security measures to detect and prevent Man-in-the-Middle attacks.

Long-Term Security Practices

Regularly monitor and update firmware to address security vulnerabilities promptly.
Educate users on secure practices to prevent unauthorized access to sensitive information.

Patching and Updates

Stay informed about security advisories and patches released by Barco for ClickShare devices to ensure ongoing protection against vulnerabilities.