CVE-2020-0523 : Security Advisory and Response

This CVE involves an improper access control vulnerability in Intel(R) Ethernet I210 Controller series of network adapters before version 3.30 that could lead to a denial of service attack.

Understanding CVE-2020-0523

This CVE relates to a security issue in Intel(R) Ethernet I210 Controller series of network adapters that could be exploited to cause a denial of service through local access.

What is CVE-2020-0523?

The vulnerability stems from improper access control in the firmware of Intel(R) Ethernet I210 Controller series, specifically affecting versions before 3.30. It could be abused by a privileged user to execute a denial of service attack locally.

The Impact of CVE-2020-0523

This vulnerability could allow a privileged attacker to disrupt normal operations, leading to a denial of service condition on the affected systems.

Technical Details of CVE-2020-0523

This section details the technical aspects of the CVE.

Vulnerability Description

The vulnerability is rooted in improper access control within the firmware of Intel(R) Ethernet I210 Controller series before version 3.30, enabling a privileged user to trigger a denial of service attack through local access.

Affected Systems and Versions

Product: Intel(R) Ethernet I210 Controller series of network adapters
Versions: Before version 3.30

Exploitation Mechanism

The vulnerability could be exploited by a privileged user with local access to the affected Intel(R) Ethernet I210 Controller series of network adapters, potentially leading to a denial of service.

Mitigation and Prevention

To address and prevent exploitation of CVE-2020-0523, follow these steps:

Immediate Steps to Take

Update to version 3.30 or later of the Intel(R) Ethernet I210 Controller series firmware.
Implement strong access controls and user permissions to restrict privileged access on the network.

Long-Term Security Practices

Regularly monitor and patch firmware and software for known vulnerabilities.
Conduct security training for users on secure access practices and identifying suspicious activities.

Patching and Updates

Apply security patches and updates provided by Intel to fix the vulnerability.