CVE-2021-36614 : Exploit Details and Defense Strategies

A memory corruption vulnerability exists in the tr069-client process of Mikrotik RouterOs versions prior to stable 6.48.2. This vulnerability could be exploited by an authenticated remote attacker to trigger a Denial of Service (DoS) through a NULL pointer dereference.

Understanding CVE-2021-36614

This section provides insights into the nature and implications of the CVE-2021-36614 vulnerability.

What is CVE-2021-36614?

CVE-2021-36614 is a memory corruption vulnerability found in Mikrotik RouterOS versions before stable 6.48.2. It resides in the tr069-client process and allows an authenticated remote attacker to cause a DoS by exploiting a NULL pointer dereference.

The Impact of CVE-2021-36614

The impact of this vulnerability is the potential for a remote attacker to disrupt services by causing a DoS condition on the affected system.

Technical Details of CVE-2021-36614

Explore the technical aspects and scope of the CVE-2021-36614 vulnerability in this section.

Vulnerability Description

The vulnerability is triggered by a memory corruption issue in the tr069-client process, which can be abused by authenticated remote attackers for a NULL pointer dereference DoS attack.

Affected Systems and Versions

Mikrotik RouterOS versions earlier than stable 6.48.2 are affected by CVE-2021-36614 due to the vulnerability present in the tr069-client process.

Exploitation Mechanism

To exploit this vulnerability, an attacker must be authenticated and can then leverage the memory corruption in the tr069-client process to achieve a DoS condition.

Mitigation and Prevention

Learn about the steps to mitigate the risks posed by CVE-2021-36614 and prevent potential exploitation.

Immediate Steps to Take

It is recommended to update affected Mikrotik RouterOS devices to version 6.48.2 or later to mitigate the vulnerability and prevent successful exploitation.

Long-Term Security Practices

Implementing network segmentation, access controls, and regular security updates can enhance the overall security posture of the network and mitigate similar vulnerabilities.

Patching and Updates

Stay informed about security advisories from Mikrotik and promptly apply patches or updates to address known vulnerabilities and strengthen the security of the infrastructure.