CVE-2020-7787 : Vulnerability Insights and Analysis

This CVE-2020-7787 affects all versions of the package react-adal. A specially crafted JWT token and request URL can lead to incorrect validation of nonce, session, and refresh values, allowing an attacker-generated JWT token to be treated as authentic due to a logical defect in how these values are stored.

Understanding CVE-2020-7787

CVE-2020-7787 involves an improper authentication vulnerability in the react-adal package.

What is CVE-2020-7787?

This vulnerability allows an attacker to manipulate JWT tokens and request URLs to bypass authentication checks, potentially leading to unauthorized access.

The Impact of CVE-2020-7787

The vulnerability has a high severity base score of 8.2, with a high impact on confidentiality and a low impact on integrity. It requires no special privileges for exploitation.

Technical Details of CVE-2020-7787

CVE-2020-7787 has the following technical details:

Vulnerability Description

Affects all versions of react-adal
Allows an attacker-generated JWT token to be treated as authentic

Affected Systems and Versions

Product: react-adal
Vendor: n/a
Versions: Custom version 0

Exploitation Mechanism

Crafted JWT token and request URL manipulation
Incorrect validation of nonce, session, and refresh values

Mitigation and Prevention

To address CVE-2020-7787, consider the following steps:

Immediate Steps to Take

Update the react-adal package to a patched version
Monitor and restrict access to sensitive data

Long-Term Security Practices

Implement multi-factor authentication
Regularly review and update security protocols

Patching and Updates

Apply security patches promptly
Stay informed about security best practices and updates