CVE-2019-16772 : Vulnerability Insights and Analysis

The serialize-to-js NPM package, prior to version 3.0.1, contains a vulnerability related to Cross-site Scripting (XSS) due to ineffective handling of hazardous characters in serialized regular expressions.

Understanding CVE-2019-16772

This CVE involves a Cross-Site Scripting vulnerability in the serialize-to-js package.

What is CVE-2019-16772?

The vulnerability in serialize-to-js arises from its inability to handle hazardous characters in serialized regular expressions, making it susceptible to XSS attacks.

The Impact of CVE-2019-16772

CVSS Score: 3.1 (Low Severity)
Attack Vector: Network
Attack Complexity: High
Availability Impact: Low
Affected Systems: Versions prior to 3.0.1 of serialize-to-js
Vulnerability Type: Cross-site Scripting (XSS) (CWE-79)

Technical Details of CVE-2019-16772

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The serialize-to-js package is vulnerable to XSS due to its inadequate handling of hazardous characters in serialized regular expressions.

Affected Systems and Versions

Affected Product: serialize-to-js
Vendor: commenthol
Vulnerable Versions: < 3.0.1

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious scripts through serialized regular expressions, impacting environments outside of Node.js.

Mitigation and Prevention

Protect your systems from CVE-2019-16772 with the following steps:

Immediate Steps to Take

Upgrade to version 3.0.1 or higher of serialize-to-js
Avoid using serialized regular expressions in non-Node.js environments

Long-Term Security Practices

Regularly update dependencies to patched versions
Implement input validation and output encoding to prevent XSS attacks

Patching and Updates

Stay informed about security advisories and updates from serialize-to-js