CVE-2021-20368 : Security Advisory and Response

IBM Cloud Pak for Applications 4.3 is vulnerable to a cross-site scripting (XSS) attack, potentially allowing malicious users to inject arbitrary JavaScript code into the Web UI. This could lead to altering the expected behavior of the application and potential disclosure of sensitive information.

Understanding CVE-2021-20368

This section provides an overview of the CVE-2021-20368 vulnerability affecting IBM Cloud Pak for Applications 4.3.

What is CVE-2021-20368?

CVE-2021-20368 is a cross-site scripting vulnerability in IBM Cloud Pak for Applications 4.3, allowing unauthorized users to insert malicious JavaScript code into the application's web interface.

The Impact of CVE-2021-20368

The vulnerability could result in the unauthorized disclosure of sensitive information or manipulation of the application's functionality, posing a risk to the confidentiality and integrity of data within a trusted session.

Technical Details of CVE-2021-20368

This section delves into the technical aspects of the CVE-2021-20368 vulnerability.

Vulnerability Description

The vulnerability enables attackers to execute arbitrary JavaScript code within the Web UI, potentially leading to unauthorized access to sensitive data or actions within the application.

Affected Systems and Versions

The issue affects IBM Cloud Pak for Applications version 4.3.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting specially crafted JavaScript code into input fields or parameters of the application, which is then executed within the context of a user's session.

Mitigation and Prevention

Understanding the mitigation strategies and preventive measures for CVE-2021-20368 is crucial to safeguard systems against potential exploitation.

Immediate Steps to Take

IBM Cloud Pak for Applications users should apply the official fix provided by IBM to address the vulnerability promptly.
Organizations should educate users about the risks associated with XSS attacks and encourage safe browsing practices.

Long-Term Security Practices

Regularly update and patch IBM Cloud Pak for Applications to protect against known vulnerabilities.
Monitor web application traffic for any suspicious activities that could indicate an XSS attack in progress.

Patching and Updates

IBM has released an official fix to remediate the CVE-2021-20368 vulnerability. Users are advised to update their Cloud Pak for Applications installations to the latest version that includes the patch.