CVE-2021-23373 : Security Advisory and Response

The CVE-2021-23373 vulnerability, also known as Prototype Pollution, affects all versions of the 'set-deep-prop' package, making them vulnerable to exploitation via the main functionality.

Understanding CVE-2021-23373

This CVE highlights a critical vulnerability in the 'set-deep-prop' package that allows attackers to perform Prototype Pollution attacks.

What is CVE-2021-23373?

The vulnerability in the 'set-deep-prop' package enables attackers to manipulate the prototype of objects and potentially execute malicious code by polluting the prototype chain.

The Impact of CVE-2021-23373

With a CVSS base score of 7.5 (High), this vulnerability poses a significant threat, allowing attackers to compromise the availability of affected systems without requiring user interaction.

Technical Details of CVE-2021-23373

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to improper input validation in the 'set-deep-prop' package, leading to prototype pollution and the execution of arbitrary code.

Affected Systems and Versions

All versions of the 'set-deep-prop' package are impacted by this vulnerability, with a custom version '0' specified as affected.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely with a low attack complexity, bypassing the need for user interaction. The PoC exploit code maturity further emphasizes the critical nature of this issue.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-23373, users and organizations are advised to take immediate steps and implement long-term security practices.

Immediate Steps to Take

Users should refrain from using the 'set-deep-prop' package until a patch or update is released to address the vulnerability.
Implement input validation mechanisms to prevent prototype pollution attacks in other packages as well.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to the 'set-deep-prop' package and other dependencies in your projects.
Consider implementing security controls and secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about patches or security fixes released by the package maintainers. Apply updates promptly to secure your systems against potential attacks.