CVE-2021-23383 : Security Advisory and Response

A detailed overview of the CVE-2021-23383, addressing the Prototype Pollution vulnerability in Handlebars package before version 4.7.7.

Understanding CVE-2021-23383

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-23383.

What is CVE-2021-23383?

The package handlebars before version 4.7.7 is susceptible to Prototype Pollution due to select compiling options when dealing with templates from untrusted sources.

The Impact of CVE-2021-23383

With a CVSS base score of 5.6, this vulnerability has a medium severity level. It can be exploited remotely with high attack complexity, allowing attackers to compromise integrity and availability.

Technical Details of CVE-2021-23383

In-depth technical information about the vulnerability in Handlebars package.

Vulnerability Description

The vulnerability arises due to incorrect handling of compiling options, leading to Prototype Pollution in versions preceding 4.7.7.

Affected Systems and Versions

The affected version is unspecified, but any version less than 4.7.7 is vulnerable to this exploit.

Exploitation Mechanism

Exploitation occurs through the manipulation of templates from untrusted sources, allowing attackers to inject malicious code.

Mitigation and Prevention

Crucial steps to mitigate the risks associated with CVE-2021-23383 and prevent future vulnerabilities.

Immediate Steps to Take

Ensure to update the Handlebars package to version 4.7.7 or higher to patch the vulnerability. Avoid using templates from untrusted sources.

Long-Term Security Practices

Implement secure coding practices and perform regular code reviews to identify and fix vulnerabilities promptly.

Patching and Updates

Stay informed about security updates for dependencies and apply patches promptly to protect your systems against potential threats.