Splunk / Product Security / SVD-2022-0603

Splunk Enterprise lacked TLS host name certificate validation

Advisory ID: SVD-2022-0603

Published: 2022-06-14

CVSSv3.1 Score: 8.1, High

CWE: CWE-297

CSAF: 2022-06-14-svd-2022-0603

CVE ID: CVE-2022-32153

Last Update: 2022-06-14

CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Bug ID: SPL-202894

Security Content: 
  Splunk Digital Certificates Infrastructure Version
  Splunk Digital Certificates Lack of Encryption
  Splunk protocol impersonation weak encryption selfsigned
  Splunk Identified SSL TLS Certificates

Description

Communications between Splunk nodes and trusted hosts lacked TLS certificate host name validation in Splunk Enterprise versions before 9.0 and Splunk Cloud Platform versions before 8.2.2203. The vulnerability requires compromising a valid certificate within the Splunk certificate authority (CA) chain for the specific customer environment or a trusted machine’s chain prior to performing a machine-in-the-middle attack.

For Splunk Enterprise, update to Splunk Enterprise version 9.0 or higher and Configure TLS host name validation to enable the remediation. 

At the time of publishing, we have no evidence of exploitation of this vulnerability by external parties.

 

Solution

For Splunk Enterprise, upgrade to version 9.0 or higher and Configure TLS host name validation.

For Splunk Cloud Platform customers, Splunk is actively patching and monitoring Splunk Cloud instances.

 

Product Status

Product Affected Versions
Splunk Enterprise Versions before 9.0
Splunk Cloud Platform Versions before 8.2.2203

 

Acknowledgments

Chris Green at Splunk