CVE-2018-20595 : What You Need to Know

This CVE-2018-20595 article provides insights into a CSRF vulnerability found in hsweb 3.0.4 version's OAuth2ClientController.java file.

Understanding CVE-2018-20595

This CVE-2018-20595 vulnerability involves a CSRF issue in the OAuth2ClientController.java file of hsweb 3.0.4 version.

What is CVE-2018-20595?

A CSRF problem was identified in the OAuth2ClientController.java file of hsweb 3.0.4, where the state parameter in the session was not compared with the state parameter in the request post user authentication.

The Impact of CVE-2018-20595

This vulnerability could allow attackers to perform Cross-Site Request Forgery attacks, potentially leading to unauthorized actions being performed on behalf of authenticated users.

Technical Details of CVE-2018-20595

This section delves into the technical aspects of the CVE-2018-20595 vulnerability.

Vulnerability Description

The issue arises from the lack of comparison between the state parameter in the session and the state parameter in the request after user authentication.

Affected Systems and Versions

Affected Version: hsweb 3.0.4
The specific file affected: OAuth2ClientController.java

Exploitation Mechanism

The vulnerability can be exploited by manipulating the state parameter in the request to perform unauthorized actions post user authentication.

Mitigation and Prevention

To address CVE-2018-20595, follow these mitigation strategies:

Immediate Steps to Take

Implement proper input validation mechanisms.
Regularly monitor and review session management processes.

Long-Term Security Practices

Conduct regular security audits and code reviews.
Educate developers on secure coding practices.

Patching and Updates

Apply patches or updates provided by the DSA to fix the CSRF vulnerability in hs3.0.4.