CVE-2020-20247 : Vulnerability Insights and Analysis

Mikrotik RouterOs before 6.46.5 (stable tree) has a memory corruption vulnerability in the /nova/bin/traceroute process, allowing an authenticated remote attacker to trigger a Denial of Service via the loop counter variable.

Understanding CVE-2020-20247

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

What is CVE-2020-20247?

The vulnerability in Mikrotik RouterOs before version 6.46.5 allows an attacker to cause a Denial of Service by exploiting a memory corruption issue in the /nova/bin/traceroute process.

The Impact of CVE-2020-20247

The impact of this vulnerability is the potential for a Denial of Service attack, which can disrupt the normal operation of affected systems.

Technical Details of CVE-2020-20247

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Mikrotik RouterOs before 6.46.5 involves a memory corruption issue in the /nova/bin/traceroute process, which can be exploited by an authenticated remote attacker.

Affected Systems and Versions

Affected Product: Mikrotik RouterOs
Affected Version: Before 6.46.5 (stable tree)

Exploitation Mechanism

An authenticated remote attacker can exploit the vulnerability by manipulating the loop counter variable in the /nova/bin/traceroute process.

Mitigation and Prevention

To address CVE-2020-20247, consider the following mitigation strategies:

Immediate Steps to Take

Update Mikrotik RouterOs to version 6.46.5 or later to mitigate the vulnerability.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit network traffic for any suspicious activities.
Keep systems and software up to date to prevent known vulnerabilities.

Patching and Updates

Apply security patches and updates provided by Mikrotik promptly to address security vulnerabilities.