CVE-2017-7660 : What You Need to Know

Apache Solr utilizes a PKI-based method for securing communication between nodes. A vulnerability allows the creation of a deceptive node pointing to a malicious one, potentially misleading cluster nodes. This affects versions 5.3 to 5.5.4 and 6.0 to 6.5.1.

Understanding CVE-2017-7660

Apache Solr's security vulnerability impacts inter-node communication, potentially leading to information disclosure.

What is CVE-2017-7660?

Apache Solr's PKI-based security can be exploited to deceive cluster nodes.
Attackers can create a false node pointing to a malicious one, tricking the cluster into accepting it as legitimate.
Servers using BasicAuth authentication or certain custom plugins are vulnerable.
SSL-only or Kerberos setups are not affected.

The Impact of CVE-2017-7660

Allows unauthorized nodes to be accepted as part of the cluster, leading to potential data breaches.
Servers using BasicAuth authentication without specific plugins are at risk.

Technical Details of CVE-2017-7660

Apache Solr vulnerability details and affected systems.

Vulnerability Description

Deceptive node creation can mislead cluster nodes.

Affected Systems and Versions

Versions 5.3 to 5.5.4 and 6.0 to 6.5.1 of Apache Solr.

Exploitation Mechanism

Manipulating node names to point to malicious nodes.

Mitigation and Prevention

Protective measures against CVE-2017-7660.

Immediate Steps to Take

Disable BasicAuth if not essential or ensure the use of appropriate authentication plugins.
Regularly monitor cluster nodes for any unauthorized entities.

Long-Term Security Practices

Implement network segmentation to isolate critical systems.
Conduct regular security audits and updates to prevent vulnerabilities.

Patching and Updates

Apply patches provided by Apache Software Foundation to address the CVE-2017-7660 vulnerability.