CVE-2020-24303 : Security Advisory and Response

Grafana before 7.1.0-beta 1 has a cross-site scripting (XSS) vulnerability via a query alias for the ElasticSearch datasource.

Understanding CVE-2020-24303

This CVE involves a security issue in Grafana that could allow an attacker to execute malicious scripts through a query alias in the ElasticSearch datasource.

What is CVE-2020-24303?

Grafana versions prior to 7.1.0-beta 1 are susceptible to XSS attacks when handling query aliases for the ElasticSearch datasource.

The Impact of CVE-2020-24303

The vulnerability could be exploited by an attacker to inject and execute arbitrary scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-24303

Grafana's vulnerability details and affected systems.

Vulnerability Description

The issue in Grafana allows for XSS attacks through a query alias in the ElasticSearch datasource, enabling malicious script execution.

Affected Systems and Versions

Product: Grafana
Versions: Before 7.1.0-beta 1

Exploitation Mechanism

Attackers can craft malicious queries with specially designed aliases to inject and execute scripts within the Grafana interface.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2020-24303.

Immediate Steps to Take

Upgrade Grafana to version 7.1.0-beta 1 or later to address the XSS vulnerability.
Avoid using user-controlled input directly in query aliases to minimize the risk of XSS attacks.

Long-Term Security Practices

Regularly update Grafana and other software components to patch security vulnerabilities promptly.
Educate users on safe data handling practices to prevent XSS and other injection attacks.

Patching and Updates

Apply security patches and updates provided by Grafana to ensure the latest fixes for known vulnerabilities are in place.