CVE-2022-32152 : Vulnerability Insights and Analysis

Splunk Enterprise and Splunk Cloud Platform were affected by CVE-2022-32152 due to a lack of TLS certificate validation during Splunk-to-Splunk communications. This vulnerability allowed attackers with administrator credentials to add a peer without a valid certificate, posing a risk to confidentiality, integrity, and availability.

Understanding CVE-2022-32152

This CVE highlights a security flaw in how Splunk Enterprise and Splunk Cloud Platform handle TLS certificates, potentially exposing them to unauthorized access and communication.

What is CVE-2022-32152?

CVE-2022-32152 details the failure of Splunk Enterprise versions prior to 9.0 and Splunk Cloud Platform versions before 8.2.2203 to validate TLS certificates by default during Splunk-to-Splunk communications.

The Impact of CVE-2022-32152

The vulnerability allowed attackers with admin privileges to bypass certificate validation, compromising the confidentiality, integrity, and availability of the affected systems. Properly configured peer communications with valid certificates remained secure.

Technical Details of CVE-2022-32152

This section delves into the specific technical aspects of the CVE, including the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

Splunk Enterprise and Splunk Cloud Platform failed to validate TLS certificates during communication, enabling unauthorized peers to connect without valid certificates, leading to potential security breaches.

Affected Systems and Versions

Splunk Enterprise versions before 9.0
Splunk Cloud Platform versions before 8.2.2203

Exploitation Mechanism

An attacker with administrator credentials could exploit this vulnerability by adding a peer without a valid certificate, establishing insecure connections.

Mitigation and Prevention

To address CVE-2022-32152, it is crucial to implement immediate steps and long-term security practices to safeguard your systems.

Immediate Steps to Take

Update Splunk Enterprise to version 9.0
Configure TLS host name validation for Splunk-to-Splunk communications to ensure proper certificate verification

Long-Term Security Practices

Regularly update and patch Splunk products to eliminate known vulnerabilities
Enforce strict certificate validation processes for all peer communications

Patching and Updates

Refer to the following resources for detailed information:

Enable TLS Cert Hostname Validation
Security Updates for Splunk
Splunk Security Advisory SVD-2022-0602
Splunk Digital Certificates Infrastructure Version
Splunk Digital Certificates Encryption Concerns
Protocol Impersonation Weak Encryption in Splunk
SSL/TLS Certificates Identified in Splunk