CVE-2020-7608 : Security Advisory and Response

yargs-parser could be tricked into adding or modifying properties of Object.prototype using a "proto" payload.

Understanding CVE-2020-7608

yargs-parser vulnerability allowing manipulation of Object.prototype properties.

What is CVE-2020-7608?

CVE-2020-7608 is a security vulnerability in yargs-parser that enables attackers to add or modify properties of Object.prototype through a specific payload.

The Impact of CVE-2020-7608

Attackers can exploit this vulnerability to manipulate the behavior of JavaScript applications.
It poses a risk of unauthorized access and potential data breaches.

Technical Details of CVE-2020-7608

yargs-parser vulnerability details and affected systems.

Vulnerability Description

Type: Prototype Pollution
Description: Allows unauthorized modification of Object.prototype properties.

Affected Systems and Versions

Product: yargs-parser
Vendor: n/a
Vulnerable Versions: All versions prior to 18.1.1, with patches at 13.1.2 and 15.0.1

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting a "proto" payload to manipulate Object.prototype.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2020-7608.

Immediate Steps to Take

Update yargs-parser to version 18.1.1 or apply patches at 13.1.2 and 15.0.1.
Monitor and restrict external input that could be used for prototype pollution attacks.

Long-Term Security Practices

Regularly update dependencies to patched versions.
Implement input validation and sanitization to prevent injection attacks.
Stay informed about security vulnerabilities and best practices.

Patching and Updates

Regularly check for security updates and apply patches promptly to prevent exploitation of known vulnerabilities.