CVE-2021-23419 : Exploit Details and Defense Strategies

This CVE-2021-23419 affects the package open-graph before version 0.2.6 due to Prototype Pollution. The vulnerability allows an attacker to manipulate properties of Object.prototype using a payload. Here's what you need to know about this CVE.

Understanding CVE-2021-23419

CVE-2021-23419, also known as Prototype Pollution, impacts the open-graph package versions prior to 0.2.6. The Snyk Security Team discovered this vulnerability on August 8, 2021.

What is CVE-2021-23419?

CVE-2021-23419 is a security flaw in the open-graph package that allows attackers to alter properties of Object.prototype through a malicious payload in the parse function.

The Impact of CVE-2021-23419

The impact of CVE-2021-23419 is rated as HIGH severity with a CVSS base score of 7.3. Although the attack complexity is low, the vulnerability can be exploited remotely without requiring privileges.

Technical Details of CVE-2021-23419

Let's dive into the technical aspects of CVE-2021-23419 to understand the vulnerability better.

Vulnerability Description

The vulnerability arises from improper handling of user-supplied data in the parse function, allowing an attacker to abuse proto or constructor payloads.

Affected Systems and Versions

The open-graph package versions prior to 0.2.6 are affected by this vulnerability. Users with outdated installations are at risk of exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting a crafted payload into the parse function, enabling them to modify Object.prototype properties.

Mitigation and Prevention

To secure your systems from CVE-2021-23419, follow these mitigation strategies.

Immediate Steps to Take

Update the open-graph package to version 0.2.6 or later to mitigate the vulnerability.
Regularly monitor security advisories for any future updates or patches.

Long-Term Security Practices

Implement input validation and sanitization to prevent injection attacks.
Conduct security audits of your codebase to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by the open-graph package maintainers. Promptly apply patches to protect your systems from known vulnerabilities.