CVE-2020-11650 : What You Need to Know

An issue was discovered in iXsystems FreeNAS (and TrueNAS) 11.2 before 11.2-u8 and 11.3 before 11.3-U1, allowing a denial of service due to a vulnerability in the login authentication component.

Understanding CVE-2020-11650

This CVE identifies a security flaw in iXsystems FreeNAS and TrueNAS versions prior to specific updates, leading to a denial of service risk.

What is CVE-2020-11650?

The vulnerability in iXsystems FreeNAS and TrueNAS versions allows attackers to exploit the login authentication component by sending authentication messages without any length or rate limits, resulting in a denial of service.

The Impact of CVE-2020-11650

The vulnerability can be exploited by malicious actors to disrupt the login authentication process, potentially leading to service unavailability and system downtime.

Technical Details of CVE-2020-11650

This section provides detailed technical information about the CVE.

Vulnerability Description

The issue in iXsystems FreeNAS and TrueNAS versions before specific updates allows for a denial of service due to the lack of limits on authentication message length and rate.

Affected Systems and Versions

iXsystems FreeNAS 11.2 before 11.2-u8
iXsystems FreeNAS 11.3 before 11.3-U1
TrueNAS 11.2 before 11.2-u8
TrueNAS 11.3 before 11.3-U1

Exploitation Mechanism

Attackers can exploit this vulnerability by sending authentication messages without any restrictions on length or rate, overwhelming the login authentication component and causing a denial of service.

Mitigation and Prevention

Protect your systems from CVE-2020-11650 with the following steps:

Immediate Steps to Take

Apply the necessary updates provided by iXsystems for FreeNAS and TrueNAS to address the vulnerability.
Monitor system logs for any unusual login authentication activities.

Long-Term Security Practices

Implement network segmentation to isolate critical systems from potential attacks.
Regularly review and update security configurations to enhance system resilience.

Patching and Updates

Ensure timely installation of software updates and patches released by iXsystems to mitigate the CVE-2020-11650 vulnerability.