CVE-2019-11812 : Vulnerability Insights and Analysis

An ongoing problem with cross-site scripting (XSS) has been detected in the file app/View/Helper/CommandHelper.php in MISP versions prior to 2.4.107. This vulnerability allows for the inclusion of JavaScript in the discussion interface, which can be activated by clicking on a specific link.

Understanding CVE-2019-11812

A persistent XSS issue was discovered in app/View/Helper/CommandHelper.php in MISP before version 2.4.107. JavaScript can be included in the discussion interface and triggered by clicking on a link.

What is CVE-2019-11812?

CVE-2019-11812 is a persistent cross-site scripting (XSS) vulnerability found in MISP versions prior to 2.4.107. It allows attackers to inject and execute malicious JavaScript code through a specific link.

The Impact of CVE-2019-11812

This vulnerability could be exploited by attackers to execute arbitrary scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-11812

The technical details of the CVE-2019-11812 vulnerability are as follows:

Vulnerability Description

Type: Cross-Site Scripting (XSS)
Location: app/View/Helper/CommandHelper.php
Affected Versions: MISP versions prior to 2.4.107

Affected Systems and Versions

Affected System: MISP
Affected Versions: MISP versions before 2.4.107

Exploitation Mechanism

Attackers can inject malicious JavaScript code into the discussion interface of MISP.
The code can be triggered when a user clicks on a specific link.

Mitigation and Prevention

To mitigate the risks associated with CVE-2019-11812, follow these steps:

Immediate Steps to Take

Update MISP to version 2.4.107 or later to eliminate the vulnerability.
Educate users about the risks of clicking on unknown or suspicious links.

Long-Term Security Practices

Regularly monitor and audit the codebase for security vulnerabilities.
Implement input validation and output encoding to prevent XSS attacks.

Patching and Updates

Apply security patches and updates promptly to ensure the system is protected against known vulnerabilities.