CVE-2021-3855 : What You Need to Know

A detailed overview of CVE-2021-3855, a Command Injection vulnerability found in Liman Central Management System.

Understanding CVE-2021-3855

This section delves into the specifics of the CVE-2021-3855 vulnerability in the Liman Central Management System.

What is CVE-2021-3855?

The CVE-2021-3855 vulnerability involves Command Injection in the Liman Central Management System, enabling potential attackers to execute arbitrary commands.

The Impact of CVE-2021-3855

The impact of CVE-2021-3855 is rated as HIGH, with attackers being able to compromise the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-3855

This section provides a technical breakdown of CVE-2021-3855, covering vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper neutralization of special elements in commands within the Liman Central Management System (Liman MYS), allowing for Command Injection.

Affected Systems and Versions

Liman Central Management System versions from 1.7.0 before 1.8.3-462 are susceptible to this Command Injection vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious commands into the affected modules (HTTP/Controllers, CronMail, Jobs) of the Liman Central Management System.

Mitigation and Prevention

This section outlines steps to mitigate and prevent exploitation of CVE-2021-3855.

Immediate Steps to Take

Immediately update the Liman Central Management System version to 1.8.2-462 or above to prevent exploitation of the Command Injection vulnerability.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and educate users on recognizing and avoiding Command Injection attacks.

Patching and Updates

Regularly apply security patches and updates provided by Liman MYS to address known vulnerabilities and enhance system security.