CVE-2021-21506 Explained : Impact and Mitigation

This article provides an overview of CVE-2021-21506, a vulnerability found in PowerScale OneFS by Dell.

Understanding CVE-2021-21506

CVE-2021-21506 is a security vulnerability identified in Dell's PowerScale OneFS solution.

What is CVE-2021-21506?

PowerScale OneFS versions 8.1.2, 8.2.2, and 9.1.0 are affected by an improper input sanitization issue in their API handler. Attackers with specific privileges could exploit this flaw to potentially escalate privileges.

The Impact of CVE-2021-21506

The CVSS score for this vulnerability is 8.8, marking it as a high-severity issue. The vulnerability can lead to confidentiality, integrity, and availability impacts on affected systems.

Technical Details of CVE-2021-21506

Here are the technical details associated with CVE-2021-21506:

Vulnerability Description

The improper input sanitization issue in PowerScale OneFS versions 8.1.2, 8.2.2, and 9.1.0 allows unauthenticated users with specific privileges to potentially achieve privileges escalation.

Affected Systems and Versions

The vulnerable versions include PowerScale OneFS 8.1.2, 8.2.2, and 9.1.0.

Exploitation Mechanism

By exploiting the improper input sanitization issue in the API handler, attackers can escalate their privileges on affected systems.

Mitigation and Prevention

Taking immediate action is crucial to mitigate the risks associated with CVE-2021-21506.

Immediate Steps to Take

Apply security patches provided by Dell promptly.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch software to prevent security vulnerabilities.
Conduct security training to educate users on best practices.

Patching and Updates

Dell has released patches to address the vulnerability in PowerScale OneFS versions 8.1.2, 8.2.2, and 9.1.0.