CVE-2019-0193 : Security Advisory and Response

Apache Solr all versions prior to 8.2.0 are affected by a security vulnerability related to the DataImportHandler module.

Understanding CVE-2019-0193

This CVE involves an information disclosure risk in Apache Solr's DataImportHandler module.

What is CVE-2019-0193?

The DataImportHandler in Apache Solr allows the configuration of Data Import Handler (DIH) through a parameter, posing a security risk due to potential inclusion of scripts.

The Impact of CVE-2019-0193

The vulnerability can lead to information disclosure due to the execution of arbitrary scripts within the DIH configurations.

Technical Details of CVE-2019-0193

Apache Solr versions prior to 8.2.0 are susceptible to this security flaw.

Vulnerability Description

The issue arises from the ability to specify DIH configurations through the "dataConfig" parameter, potentially allowing the execution of malicious scripts.

Affected Systems and Versions

Product: Apache Solr
Vendor: Apache
Versions Affected: Apache Solr all versions prior to 8.2.0

Exploitation Mechanism

By manipulating the "dataConfig" parameter, attackers can execute arbitrary scripts, leading to information disclosure.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to address CVE-2019-0193.

Immediate Steps to Take

Upgrade Apache Solr to version 8.2.0 or newer.
Set the Java System property "enable.dih.dataConfigParam" to true.

Long-Term Security Practices

Regularly monitor and apply security updates for Apache Solr.
Implement strict input validation to prevent script execution.
Conduct security audits to identify and mitigate similar vulnerabilities.

Patching and Updates

Ensure timely installation of patches and updates provided by Apache to address CVE-2019-0193.