CVE-2021-41277 : Vulnerability Insights and Analysis

Metabase, an open-source data analytics platform, was found to have a security issue related to GeoJSON map support, potentially leading to local file inclusion and exposure of sensitive information.

Understanding CVE-2021-41277

In this CVE, an issue with GeoJSON URL validation in Metabase versions was discovered, allowing unauthorized users to access server files and environment variables.

What is CVE-2021-41277?

Metabase, a data analytics platform, had a security vulnerability in versions < 0.40.5 and >= 1.0.0, < 1.40.5 related to GeoJSON map support, potentially exposing sensitive information.

The Impact of CVE-2021-41277

The vulnerability scored a CVSS base score of 10 (Critical severity) due to its potential to impact confidentiality, integrity, and availability, without requiring privileges.

Technical Details of CVE-2021-41277

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw allowed unauthorized users to exploit the GeoJSON map support, leading to local file inclusion and exposure of sensitive information, such as environment variables.

Affected Systems and Versions

Versions < 0.40.5
Versions >= 1.0.0, < 1.40.5

Exploitation Mechanism

Unauthorized users could manipulate the GeoJSON URL validation in Metabase to access server files and environment variables, compromising the system's security.

Mitigation and Prevention

Protective measures and steps to mitigate the CVE.

Immediate Steps to Take

Upgrade to fixed versions (0.40.5 and 1.40.5) or newer.
Implement rules in the reverse proxy, load balancer, or WAF to validate URLs.

Long-Term Security Practices

Regularly update Metabase to the latest versions.
Monitor and restrict access to critical system resources.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Ensure timely application of security patches and updates to prevent exploitation of known vulnerabilities.