CVE-2021-27001 Explained : Impact and Mitigation

Clustered Data ONTAP versions 9.x prior to 9.5P18, 9.6P16, 9.7P16, 9.8P7, and 9.9.1P2 are susceptible to a vulnerability that could allow an authenticated privileged local attacker to modify Compliance-mode WORM data. Here's what you need to know about CVE-2021-27001.

Understanding CVE-2021-27001

CVE-2021-27001 is a security vulnerability found in Clustered Data ONTAP versions 9.x prior to 9.5P18, 9.6P16, 9.7P16, 9.8P7, and 9.9.1P2. It allows authenticated privileged local attackers to arbitrarily modify Compliance-mode WORM data before the end of the retention period.

What is CVE-2021-27001?

Clustered Data ONTAP versions prior to the specified patches are at risk due to a vulnerability that enables attackers to tamper with Compliance-mode WORM data.

The Impact of CVE-2021-27001

This vulnerability may lead to unauthorized modification of data by authenticated privileged local attackers, potentially compromising the integrity and security of Compliance-mode WORM data.

Technical Details of CVE-2021-27001

CVE-2021-27001 affects Clustered Data ONTAP versions 9.x prior to 9.5P18, 9.6P16, 9.7P16, 9.8P7, and 9.9.1P2. Here are the technical details:

Vulnerability Description

The vulnerability allows authenticated privileged local attackers to manipulate Compliance-mode WORM data before the retention period ends.

Affected Systems and Versions

Clustered Data ONTAP versions 9.x before 9.5P18, 9.6P16, 9.7P16, 9.8P7, and 9.9.1P2 are impacted by this vulnerability.

Exploitation Mechanism

Attackers with local access and privileges can exploit this vulnerability to modify Compliance-mode WORM data.

Mitigation and Prevention

To address CVE-2021-27001 and enhance security, consider the following measures:

Immediate Steps to Take

Apply the necessary patches provided by Clustered Data ONTAP to mitigate the vulnerability.

Long-Term Security Practices

Review and restrict local user permissions to prevent unauthorized data modification.

Patching and Updates

Regularly update Clustered Data ONTAP to the latest versions and apply security patches promptly to protect against known vulnerabilities.