CVE-2020-20215 : What You Need to Know

Mikrotik RouterOs 6.44.6 (long-term tree) suffers from a memory corruption vulnerability in the /nova/bin/diskd process, allowing an authenticated remote attacker to cause a Denial of Service due to invalid memory access.

Understanding CVE-2020-20215

This CVE identifies a specific vulnerability in Mikrotik RouterOs 6.44.6 that can be exploited by an authenticated remote attacker.

What is CVE-2020-20215?

The vulnerability in the /nova/bin/diskd process of Mikrotik RouterOs 6.44.6 allows attackers to trigger a Denial of Service by exploiting a memory corruption issue.

The Impact of CVE-2020-20215

The exploitation of this vulnerability can lead to a Denial of Service condition, disrupting the normal operation of the affected system.

Technical Details of CVE-2020-20215

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in Mikrotik RouterOs 6.44.6 involves a memory corruption issue in the /nova/bin/diskd process, enabling an attacker to cause a Denial of Service through unauthorized memory access.

Affected Systems and Versions

Product: Mikrotik RouterOs 6.44.6 (long-term tree)
Vendor: Mikrotik
Version: n/a

Exploitation Mechanism

An authenticated remote attacker can exploit this vulnerability by sending specially crafted requests to the /nova/bin/diskd process, leading to a memory corruption and subsequent Denial of Service.

Mitigation and Prevention

Protecting systems from CVE-2020-20215 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates to address the vulnerability.
Monitor network traffic for any suspicious activity targeting the /nova/bin/diskd process.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent known vulnerabilities.
Implement strong authentication mechanisms to restrict unauthorized access to critical system components.
Conduct regular security audits and assessments to identify and mitigate potential risks.
Stay informed about security advisories and updates from the vendor.
Consider implementing network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure timely installation of patches and updates provided by Mikrotik to remediate the vulnerability and enhance the overall security posture of the system.