CVE-2020-15943 : Security Advisory and Response

An issue was discovered in the Gantt-Chart module before 5.5.4 for Jira, allowing unauthorized access to module configurations and potential XSS attacks.

Understanding CVE-2020-15943

This CVE involves an improper privilege management vulnerability in the Gantt-Chart module for Jira, potentially leading to unauthorized access and XSS attacks.

What is CVE-2020-15943?

The vulnerability in the Gantt-Chart module for Jira allows authenticated attackers to read and write to other users' module configurations, enabling the delivery of XSS payloads to their dashboards.

The Impact of CVE-2020-15943

The vulnerability poses a risk of unauthorized data access and potential XSS attacks on Jira users' dashboards, compromising data integrity and confidentiality.

Technical Details of CVE-2020-15943

The technical aspects of the vulnerability in the Gantt-Chart module for Jira.

Vulnerability Description

Due to a missing privilege check, attackers can exploit the vulnerability to access and modify module configurations of other users, facilitating XSS payload delivery.

Affected Systems and Versions

Product: Gantt-Chart module for Jira
Vendor: N/A
Versions affected: Before 5.5.4

Exploitation Mechanism

To exploit this vulnerability, attackers need to be authenticated, allowing them to manipulate module configurations and inject XSS payloads.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2020-15943 vulnerability.

Immediate Steps to Take

Update the Gantt-Chart module to version 5.5.4 or newer to patch the privilege management issue.
Monitor user activities for any unauthorized configuration changes.

Long-Term Security Practices

Implement least privilege access controls to limit user capabilities.
Regularly audit and review module configurations for unauthorized changes.

Patching and Updates

Stay informed about security updates for the Gantt-Chart module and promptly apply patches to address known vulnerabilities.