CVE-2021-37742 : Vulnerability Insights and Analysis

A Stored XSS vulnerability in MISP 2.4.147 allows malicious actors to execute scripts in a victim's browser when viewing galaxy cluster relationships.

Understanding CVE-2021-37742

This section will cover the details of the CVE-2021-37742 vulnerability.

What is CVE-2021-37742?

The CVE-2021-37742 vulnerability exists in app/View/Elements/GalaxyClusters/view_relation_tree.ctp in MISP 2.4.147, enabling Stored XSS attacks by displaying malicious content when viewing galaxy cluster relationships.

The Impact of CVE-2021-37742

The impact of this vulnerability includes the potential for unauthorized script execution in a victim's browser, leading to data theft, account compromise, and other malicious activities.

Technical Details of CVE-2021-37742

This section will delve into the technical aspects of CVE-2021-37742.

Vulnerability Description

The vulnerability allows threat actors to store and execute malicious scripts within the MISP platform, posing a significant security risk to user data and system integrity.

Affected Systems and Versions

All instances of MISP 2.4.147 are affected by this vulnerability, highlighting the importance of prompt mitigation measures.

Exploitation Mechanism

By leveraging the vulnerability in the galaxy cluster relationship viewer, attackers can inject and execute scripts to compromise user security and privacy.

Mitigation and Prevention

This section will outline strategies to mitigate and prevent exploitation of CVE-2021-37742.

Immediate Steps to Take

Users are advised to update MISP to a patched version, implement input validation, and avoid accessing suspicious links to prevent XSS attacks.

Long-Term Security Practices

Regular security audits, employee training on phishing prevention, and implementing content security policies can enhance long-term security resilience.

Patching and Updates

Stay informed about MISP security updates and promptly apply patches to eliminate vulnerabilities and enhance platform security.