CVE-2020-5263 : Security Advisory and Response

auth0.js (NPM package auth0-js) greater than version 8.0.0 and before version 9.12.3 has a vulnerability that exposes plaintext passwords in error objects.

Understanding CVE-2020-5263

This CVE involves an information disclosure vulnerability in the auth0.js library.

What is CVE-2020-5263?

The vulnerability in auth0.js exposes plaintext passwords in error objects, potentially risking password exposure.

The Impact of CVE-2020-5263

Base Score: 5.5 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Privileges Required: High
User Interaction: Required

Technical Details of CVE-2020-5263

This section provides more technical insights into the CVE.

Vulnerability Description

In case of an authentication error, the error object may contain the user's plaintext password.

Affected Systems and Versions

Product: auth0.js
Vendor: auth0
Versions Affected: >= 8.0.0, < 9.12.3

Exploitation Mechanism

If the error object is exposed or logged without modification, it can lead to password exposure.

Mitigation and Prevention

Protecting systems from the CVE and preventing potential risks.

Immediate Steps to Take

Upgrade auth0.js to version 9.12.3 or higher to mitigate the vulnerability.
Avoid exposing or logging error objects containing sensitive information.

Long-Term Security Practices

Implement secure coding practices to handle errors without exposing sensitive data.
Regularly review and update security protocols to address similar vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to prevent exploitation.