CVE-2021-20026 Explained : Impact and Mitigation

A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request.

Understanding CVE-2021-20026

This CVE describes a security flaw in SonicWall NSM On-Prem that permits authenticated attackers to execute OS command injection via a specially designed HTTP request.

What is CVE-2021-20026?

CVE-2021-20026 outlines a vulnerability in SonicWall NSM On-Prem, enabling authenticated malicious users to carry out OS command injection attacks.

The Impact of CVE-2021-20026

The security flaw in SonicWall NSM On-Prem versions prior to 2.2.0-R10 can result in unauthorized OS command executions by authenticated attackers, potentially leading to further compromise of the system.

Technical Details of CVE-2021-20026

This section discusses the technical aspects of the CVE.

Vulnerability Description

The vulnerability involves improper neutralization of special elements in OS commands, specifically OS command injection (CWE-78), allowing authenticated attackers to execute arbitrary commands.

Affected Systems and Versions

SonicWall NSM On-Prem versions up to 2.2.0-R10 are affected by this vulnerability.

Exploitation Mechanism

Attackers with authenticated access can exploit this vulnerability by sending a malicious HTTP request to the affected system.

Mitigation and Prevention

Explore the necessary steps to mitigate and prevent exploitation of CVE-2021-20026.

Immediate Steps to Take

Organizations are advised to apply security patches immediately and restrict network access to the affected SonicWall NSM On-Prem systems.

Long-Term Security Practices

Implement strict access controls, conduct regular security audits, and train staff on secure coding practices to enhance overall system security.

Patching and Updates

Regularly monitor for security updates from SonicWall and promptly apply patches to ensure protection against known vulnerabilities.