CVE-2021-23359 : Exploit Details and Defense Strategies

A detailed overview of CVE-2021-23359, discussing the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-23359

This CVE involves an Arbitrary Command Injection vulnerability in package port-killer, allowing attackers to execute arbitrary commands.

What is CVE-2021-23359?

CVE-2021-23359 is a security flaw in all versions of the port-killer package that enables attackers to run arbitrary commands due to a lack of input sanitization.

The Impact of CVE-2021-23359

The vulnerability poses a high risk with a CVSS base score of 7.5, allowing attackers to execute commands remotely, potentially leading to data compromise, availability issues, and unauthorized access.

Technical Details of CVE-2021-23359

Exploring the specifics of the vulnerability.

Vulnerability Description

The flaw arises from the insecure use of the child_process exec function without proper input validation, enabling malicious command execution.

Affected Systems and Versions

All versions of the port-killer package are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can exploit this issue by providing malicious input, triggering the execution of arbitrary commands like creating files on the system.

Mitigation and Prevention

Guidelines to address and prevent exploitation of CVE-2021-23359.

Immediate Steps to Take

Sanitize user input, restrict command execution privileges, and monitor for any suspicious activities to mitigate immediate risks.

Long-Term Security Practices

Implement secure coding practices, conduct regular security assessments, and stay updated on patches and security advisories.

Patching and Updates

Apply patches provided by the package maintainer promptly, maintain updated versions, and follow secure coding practices to prevent future vulnerabilities.