CVE-2021-21561 Explained : Impact and Mitigation

This CVE-2021-21561 article provides insights into a vulnerability found in Dell's PowerScale OneFS software version 8.1.2, detailing its impact, technical aspects, and mitigation methods.

Understanding CVE-2021-21561

This section delves into the specifics of the CVE-2021-21561 vulnerability.

What is CVE-2021-21561?

The CVE-2021-21561 vulnerability is present in Dell PowerScale OneFS version 8.1.2, leading to sensitive information exposure. Attackers with specific privileges can access confidential data in log files.

The Impact of CVE-2021-21561

The vulnerability's impact is classified as high, with a CVSS base score of 7.8, affecting confidentiality, integrity, and availability.

Technical Details of CVE-2021-21561

This section provides technical insights into the CVE-2021-21561 vulnerability.

Vulnerability Description

Dell PowerScale OneFS version 8.1.2 is susceptible to sensitive information exposure, allowing unauthorized access to log files.

Affected Systems and Versions

The affected versions include PowerScale OneFS prior to 8.1.0, 8.1.1, 8.1.2, 8.2.x, and 9.1.0.x.

Exploitation Mechanism

Malicious users with ISI_PRIV_LOGIN_SSH and/or ISI_PRIV_LOGIN_CONSOLE privileges can exploit the vulnerability to access critical information in log files.

Mitigation and Prevention

This section highlights the mitigation strategies and best practices for addressing CVE-2021-21561.

Immediate Steps to Take

Organizations are advised to restrict access and monitor log files for unauthorized activities. Implementing the principle of least privilege is crucial.

Long-Term Security Practices

Regular security training, access control reviews, and continuous monitoring can enhance overall security posture against such vulnerabilities.

Patching and Updates

Users are recommended to update PowerScale OneFS to version 8.1.2 or later to remediate the vulnerability.