CVE-2019-13127 : Vulnerability Insights and Analysis

A vulnerability was found in mxGraph before version 4.0.0, specifically linked to the "draw.io Diagrams" plugin version 8.3.14 for Confluence and related products. The issue arises from inadequate validation of a color field, leading to potential cross-site scripting (XSS) attacks.

Understanding CVE-2019-13127

This CVE identifies a security flaw in mxGraph related to the "draw.io Diagrams" plugin, allowing XSS attacks due to improper input validation.

What is CVE-2019-13127?

CVE-2019-13127 is a vulnerability in mxGraph prior to version 4.0.0, associated with the "draw.io Diagrams" plugin version 8.3.14 for Confluence and other products. The flaw lies in insufficient validation of a color field, enabling XSS attacks.

The Impact of CVE-2019-13127

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

Technical Details of CVE-2019-13127

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The issue stems from inadequate validation/sanitization of a color field in the Dialogs.js file, located at javascript/examples/grapheditor/www/js/.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions before 4.0.0 of mxGraph and version 8.3.14 of the "draw.io Diagrams" plugin for Confluence and related products.

Exploitation Mechanism

The vulnerability allows attackers to inject and execute malicious scripts through the color field, exploiting the lack of proper input validation.

Mitigation and Prevention

Protecting systems from CVE-2019-13127 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update mxGraph to version 4.0.0 or later.
Upgrade the "draw.io Diagrams" plugin to version 8.3.14 or higher.
Implement input validation mechanisms to sanitize user inputs effectively.

Long-Term Security Practices

Regularly monitor and audit plugins and dependencies for security vulnerabilities.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Stay informed about security updates for mxGraph and related plugins.
Apply patches promptly to address known vulnerabilities.