CVE-2023-50290 : What You Need to Know

Apache Solr: Host environment variables are published via the Metrics API

Understanding CVE-2023-50290

This CVE-2023-50290 affects Apache Solr versions from 9.0.0 to 9.3.0, exposing sensitive information to unauthorized actors by publishing host environment variables via the Solr Metrics API.

What is CVE-2023-50290?

Apache Solr's Metrics API exposes all unprotected environment variables to each instance, potentially revealing sensitive information. Users can hide specific variables, but the default list might still expose Java system properties. The vulnerability impacts versions 9.0.0 to 9.3.0.

The Impact of CVE-2023-50290

This vulnerability allows unauthorized users to access sensitive environment variables, posing a risk of data leakage and unauthorized access to critical information stored in Apache Solr instances.

Technical Details of CVE-2023-50290

The following points outline the technical aspects of CVE-2023-50290:

Vulnerability Description

The Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Solr allows attackers to view host environment variables via the Metrics API, potentially leading to data exposure and security breaches.

Affected Systems and Versions

Apache Solr versions 9.0.0 to 9.3.0 are impacted by this vulnerability, exposing environment variables to unauthorized actors if not mitigated.

Exploitation Mechanism

Attackers with knowledge of the vulnerability can exploit the Solr Metrics API to access sensitive environment variables, bypassing the intended security measures.

Mitigation and Prevention

Protecting your systems from CVE-2023-50290 is crucial to maintaining data security within Apache Solr environments.

Immediate Steps to Take

Upgrade Apache Solr to version 9.3.0 or later, where environment variables are not exposed via the Metrics API.

Long-Term Security Practices

Regularly monitor and update access controls for Apache Solr instances to prevent unauthorized exposure of environment variables.

Patching and Updates

Stay informed about security advisories from Apache Solr and apply patches promptly to address known vulnerabilities and enhance system security.