CVE-2019-18827 : Vulnerability Insights and Analysis

Barco ClickShare Button R9861500D01 devices have a vulnerability where JTAG access is disabled after ROM code execution until firmware version 1.9.0.

Understanding CVE-2019-18827

Barco ClickShare Button devices are affected by a JTAG access issue that limits access after ROM code execution.

What is CVE-2019-18827?

This CVE refers to the vulnerability in Barco ClickShare Button R9861500D01 devices that disables JTAG access post ROM code execution until firmware version 1.9.0.

The Impact of CVE-2019-18827

The vulnerability restricts JTAG access on affected devices, potentially hindering debugging and security analysis processes.

Technical Details of CVE-2019-18827

Barco ClickShare Button R9861500D01 devices are susceptible to JTAG access limitations.

Vulnerability Description

JTAG access is disabled on the devices after the execution of ROM code until firmware version 1.9.0, restricting access during certain operational phases.

Affected Systems and Versions

Product: Barco ClickShare Button R9861500D01
Vendor: Barco
Versions affected: Up to firmware version 1.9.0

Exploitation Mechanism

Access to JTAG is only possible when the system is running code from ROM before transferring control to the embedded firmware.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-18827 vulnerability.

Immediate Steps to Take

Update affected devices to firmware version 1.9.0 or later to enable JTAG access.
Implement additional security measures to compensate for the temporary JTAG access limitation.

Long-Term Security Practices

Regularly update firmware and software to mitigate potential vulnerabilities.
Conduct security assessments and audits to identify and address any security gaps.

Patching and Updates

Apply patches and updates provided by Barco to ensure the security of the ClickShare Button devices.