CVE-2021-33128 : Security Advisory and Response

Intel(R) E810 Ethernet Controllers before version 1.6.0.6 are affected by an improper access control vulnerability that could potentially enable denial of service attacks through local access.

Understanding CVE-2021-33128

This CVE refers to the vulnerability in Intel(R) E810 Ethernet Controllers that allows a privileged user to trigger denial of service attacks.

What is CVE-2021-33128?

CVE-2021-33128 highlights the improper access control within the firmware of certain Intel(R) E810 Ethernet Controllers. This vulnerability, present in versions before 1.6.0.6, can be exploited by a privileged user to potentially initiate denial of service attacks.

The Impact of CVE-2021-33128

The impact of this vulnerability is significant as it exposes affected systems to the risk of denial of service attacks, compromising the availability and stability of network operations.

Technical Details of CVE-2021-33128

Below are specific technical details related to CVE-2021-33128:

Vulnerability Description

The vulnerability stems from improper access control in the firmware of Intel(R) E810 Ethernet Controllers, allowing a privileged user to exploit it for initiating denial of service attacks.

Affected Systems and Versions

Intel(R) E810 Ethernet Controllers before version 1.6.0.6 are susceptible to this vulnerability.

Exploitation Mechanism

A privileged user can exploit the vulnerability via local access to the affected Intel(R) E810 Ethernet Controllers, potentially leading to denial of service scenarios.

Mitigation and Prevention

To address CVE-2021-33128 and enhance system security, the following steps are recommended:

Immediate Steps to Take

Update Intel(R) E810 Ethernet Controllers to version 1.6.0.6 or newer.
Implement access controls and restrictions to limit privileged user actions.
Monitor network traffic for any suspicious or unauthorized activities.

Long-Term Security Practices

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

Patching and Updates

Stay informed about security advisories and updates from Intel to promptly apply patches to address vulnerabilities.