CVE-2018-1308 : Security Advisory and Response

A security vulnerability affecting Apache Solr versions 1.2 to 6.6.2 and 7.0.0 to 7.2.1 allows unauthorized access through XML external entity expansion (XXE) exploitation.

Understanding CVE-2018-1308

This CVE involves a vulnerability in Apache Solr that enables XXE attacks through the

&dataConfig=<inlinexml>

parameter of Solr's DataImportHandler.

What is CVE-2018-1308?

The security flaw in Apache Solr versions 1.2 to 6.6.2 and 7.0.0 to 7.2.1 pertains to XXE exploitation via the

&dataConfig=<inlinexml>

parameter, potentially leading to unauthorized access.

The Impact of CVE-2018-1308

This vulnerability allows attackers to exploit XXE using file, ftp, or http protocols, gaining unauthorized access to the Solr server or internal network files.

Technical Details of CVE-2018-1308

Apache Solr versions 1.2 to 6.6.2 and 7.0.0 to 7.2.1 are affected by this vulnerability.

Vulnerability Description

The vulnerability lies in the

&dataConfig=<inlinexml>

parameter of Solr's DataImportHandler, enabling XXE attacks through file, ftp, or http protocols.

Affected Systems and Versions

Apache Solr versions 1.2 to 6.6.2
Apache Solr versions 7.0.0 to 7.2.1

Exploitation Mechanism

Attackers can exploit this vulnerability to gain unauthorized access to Solr servers or internal network files through XXE using file, ftp, or http protocols.

Mitigation and Prevention

Immediate Steps to Take:

Update Apache Solr to the latest patched version.
Implement strict input validation to prevent XXE attacks.
Monitor network traffic for suspicious activities. Long-Term Security Practices:
Regularly update and patch software to address security vulnerabilities.
Conduct security audits and penetration testing to identify and mitigate potential risks.
Educate users and administrators about secure coding practices.
Consider implementing network segmentation to limit the impact of potential breaches.
Stay informed about security advisories and best practices.

Patching and Updates

Ensure Apache Solr is updated to the latest version to mitigate the CVE-2018-1308 vulnerability.