CVE-2023-32708 : Security Advisory and Response

This article provides detailed information about CVE-2023-32708, a vulnerability in Splunk Enterprise and Splunk Cloud Platform that allows a low-privileged user to trigger an HTTP response splitting vulnerability.

Understanding CVE-2023-32708

CVE-2023-32708 is a security vulnerability in Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, as well as Splunk Cloud Platform versions below 9.0.2303.100. It enables a low-privileged user to exploit an HTTP response splitting issue using the 'rest' SPL command.

What is CVE-2023-32708?

CVE-2023-32708 allows a low-privileged user to trigger an HTTP response splitting vulnerability with the 'rest' SPL command, potentially granting unauthorized access to other REST endpoints within the system.

The Impact of CVE-2023-32708

The vulnerability poses a high severity risk, with a CVSS base score of 7.2, categorizing it as a high impact threat. Exploitation of this vulnerability can lead to unauthorized data access and potential system compromise.

Technical Details of CVE-2023-32708

In Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, and Splunk Cloud Platform versions below 9.0.2303.100, a low-privileged user can trigger an HTTP response splitting vulnerability with the 'rest' SPL command.

Vulnerability Description

The vulnerability allows unauthorized access to other REST endpoints in the system, potentially leading to data breaches and system compromise.

Affected Systems and Versions

Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, as well as Splunk Cloud Platform versions below 9.0.2303.100 are affected by CVE-2023-32708.

Exploitation Mechanism

By leveraging the 'rest' SPL command, a low-privileged user can exploit the HTTP response splitting vulnerability to access REST endpoints arbitrarily within the system.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-32708, immediate steps should be taken to secure affected systems and prevent potential exploitation.

Immediate Steps to Take

Ensure to update Splunk Enterprise versions to 9.0.5, 8.2.11, or 8.1.14, and Splunk Cloud Platform versions to 9.0.2303.100 or higher to address the vulnerability.

Long-Term Security Practices

Implement strict access controls, conduct regular security audits, and educate users on best security practices to enhance overall system security.

Patching and Updates

Stay informed about security patches and updates released by Splunk to address vulnerabilities and ensure the system's protection.