CVE-2021-0084 : Exploit Details and Defense Strategies

A vulnerability has been identified in the Intel(R) Ethernet Controllers X722 and 800 series Linux RMDA driver before version 1.3.19, allowing an authenticated user to potentially enable escalation of privilege via local access.

Understanding CVE-2021-0084

This CVE describes an improper input validation issue in the Intel(R) Ethernet Controllers X722 and 800 series Linux RMDA driver, impacting versions before 1.3.19.

What is CVE-2021-0084?

The CVE-2021-0084 vulnerability involves improper input validation in the affected Intel Ethernet Controllers, potentially leading to privilege escalation for authenticated users with local access.

The Impact of CVE-2021-0084

The impact of this CVE is significant as it enables an authenticated user to raise their privileges through exploiting the flaw in the Linux RMDA driver, potentially leading to unauthorized actions.

Technical Details of CVE-2021-0084

This section covers the technical details of the CVE.

Vulnerability Description

The vulnerability is caused by improper input validation in the Linux RMDA driver, specifically in versions prior to 1.3.19, which could be abused by authenticated users.

Affected Systems and Versions

Systems using Intel(R) Ethernet Controllers X722 and 800 series with Linux RMDA driver versions before 1.3.19 are susceptible to this privilege escalation vulnerability.

Exploitation Mechanism

An authenticated local user could exploit the improper input validation issue in the affected driver to escalate their privileges, gaining unauthorized access.

Mitigation and Prevention

To address the CVE-2021-0084 vulnerability, immediate remediation steps and long-term security practices are essential.

Immediate Steps to Take

Organizations should apply security patches and updates provided by Intel as a crucial first step to mitigate the privilege escalation risk in the affected driver.

Long-Term Security Practices

Implementing robust access controls, regular security audits, and user privilege management practices are recommended to enhance overall system security and prevent similar vulnerabilities.

Patching and Updates

Regularly monitor and apply security updates and patches from Intel to ensure vulnerabilities like CVE-2021-0084 are promptly addressed and mitigated.