CVE-2020-28331 Explained : Impact and Mitigation

Barco wePresent WiPG-1600W devices have an Improper Access Control vulnerability that allows unauthorized access to the device's SSH daemon.

Understanding CVE-2020-28331

This CVE identifies a security issue in Barco wePresent WiPG-1600W devices that could be exploited by malicious actors to start the SSH daemon during device boot.

What is CVE-2020-28331?

The vulnerability in Barco wePresent WiPG-1600W devices allows unauthorized users to manipulate a configuration file variable through a POST request, enabling the SSH daemon to start at system boot.

The Impact of CVE-2020-28331

The vulnerability could lead to unauthorized access to the device's SSH daemon, potentially compromising the security and integrity of the device and the network it is connected to.

Technical Details of CVE-2020-28331

Barco wePresent WiPG-1600W devices are affected by an Improper Access Control vulnerability that can be exploited as follows:

Vulnerability Description

The SSH daemon in the device's firmware is disabled by default but can be started during boot via a manipulated configuration file variable.

Affected Systems and Versions

Affected Version: 2.5.1.8

Exploitation Mechanism

Malicious actors can include a specific variable in a POST request to trigger the SSH daemon's startup during device boot.

Mitigation and Prevention

To address CVE-2020-28331, follow these steps:

Immediate Steps to Take

Disable SSH access if not required.
Monitor network traffic for any suspicious activity related to SSH.
Implement firewall rules to restrict SSH access.

Long-Term Security Practices

Regularly update device firmware to patch known vulnerabilities.
Conduct security assessments to identify and mitigate potential risks.

Patching and Updates

Apply firmware updates provided by Barco to fix the vulnerability and enhance device security.