CVE-2018-3773 : Security Advisory and Response

A stored Cross-Site Scripting vulnerability in the

metascrape

npm module version 3.9.2 and lower has been identified, allowing attackers to execute malicious scripts.

Understanding CVE-2018-3773

This CVE involves a security flaw in the Open Graph meta properties that can be exploited through the

metascrape

npm module.

What is CVE-2018-3773?

The

metascrape

npm module version 3.9.2 and below are susceptible to stored Cross-Site Scripting (XSS) attacks due to a vulnerability in Open Graph meta properties.

The Impact of CVE-2018-3773

This vulnerability could allow attackers to inject malicious scripts into web pages, leading to unauthorized access, data theft, and potential compromise of user information.

Technical Details of CVE-2018-3773

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability lies in the way the

metascrape

npm module handles Open Graph meta properties, enabling attackers to store and execute malicious scripts.

Affected Systems and Versions

Product: metascraper
Vendor: https://github.com/microlinkhq
Vulnerable Version: Not fixed

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Open Graph meta properties processed by the

metascrape

npm module to inject and execute malicious scripts.

Mitigation and Prevention

To address CVE-2018-3773, consider the following mitigation strategies:

Immediate Steps to Take

Update the

metascrape

npm module to a fixed version once available.
Implement input validation to sanitize user-generated content and prevent script injection.

Long-Term Security Practices

Regularly monitor and audit dependencies for known vulnerabilities.
Educate developers on secure coding practices to prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by the

metascraper

vendor.