CVE-2021-23395 : What You Need to Know

This CVE-2021-23395 article provides detailed information about the Prototype Pollution vulnerability affecting all versions of the nedb package. It explains the impact, technical details, and mitigation steps.

Understanding CVE-2021-23395

This section delves into the details of the CVE-2021-23395 vulnerability, its impact, affected systems, and exploitation mechanisms.

What is CVE-2021-23395?

CVE-2021-23395, also known as the Prototype Pollution vulnerability, affects all versions of the nedb package. It allows attackers to manipulate properties of Object.prototype using certain payloads.

The Impact of CVE-2021-23395

The impact of CVE-2021-23395 is rated as HIGH severity with a CVSS base score of 7.3. The vulnerability could be exploited remotely without requiring privileges, potentially leading to unauthorized modifications or additions to Object.prototype properties.

Technical Details of CVE-2021-23395

This section outlines the vulnerability description, affected systems, and how the exploitation occurs.

Vulnerability Description

The vulnerability in the nedb package allows attackers to manipulate properties of Object.prototype by using payloads such as proto or constructor.prototype, potentially leading to unauthorized property modifications.

Affected Systems and Versions

All versions of the nedb package are affected by CVE-2021-23395. Users of this package are at risk of exploitation if proper security measures are not implemented.

Exploitation Mechanism

Exploiting this vulnerability involves tricking the nedb library into unintended property modifications of Object.prototype by utilizing specific payloads like proto or constructor.prototype.

Mitigation and Prevention

This section provides guidance on immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users are advised to update the nedb package to a patched version immediately to mitigate the risk of exploitation. Additionally, input validation and sanitization can help prevent such attacks.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and staying informed about vulnerabilities in packages like nedb are crucial for long-term security.

Patching and Updates

Regularly updating the nedb package to the latest secure version is essential to address known vulnerabilities and protect systems from potential exploitation.