CVE-2020-0524 : Exploit Details and Defense Strategies

This CVE involves improper default permissions in the firmware of Intel(R) Ethernet I210 Controller network adapters, potentially leading to a denial of service vulnerability.

Understanding CVE-2020-0524

This CVE identifies a security issue in the firmware of Intel(R) Ethernet I210 Controller series of network adapters before version 3.30 that could be exploited by an authenticated user to enable denial of service through local access.

What is CVE-2020-0524?

The vulnerability stems from improper default permissions in the affected network adapter's firmware, which may allow an authenticated user to trigger a denial of service attack.

The Impact of CVE-2020-0524

The vulnerability could enable an authenticated user to potentially exploit the network adapter's firmware to execute a denial of service attack, impacting system availability.

Technical Details of CVE-2020-0524

The technical aspects of this CVE are as follows:

Vulnerability Description

Improper default permissions in the firmware of Intel(R) Ethernet I210 Controller series of network adapters

Affected Systems and Versions

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

Exploitation Mechanism

An authenticated user with local access can exploit the firmware's default permissions to potentially enable denial of service.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this CVE:

Immediate Steps to Take

Update the firmware to version 3.30 or above to mitigate the vulnerability
Review and adjust permissions on network adapters to prevent unauthorized exploitation

Long-Term Security Practices

Regularly monitor and update firmware and security patches to protect against vulnerabilities
Implement network segmentation and access controls to limit potential attack surfaces

Patching and Updates

Regularly check for firmware updates and security advisories from Intel
Apply patches promptly to ensure the network's security and integrity