Splunk / Product Security / SVD-2022-0602

Splunk Enterprise lacked TLS certificate validation for Splunk-to-Splunk communication by default

Advisory ID: SVD-2022-0602

Published: 2022-06-14

CVSSv3.1 Score: 8.1, High

CWE: CWE-295

CSAF: 2022-06-14-svd-2022-0602

CVE ID: CVE-2022-32152

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-114067, SPL-138957

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

Splunk Enterprise peers in Splunk Enterprise versions before 9.0 and Splunk Cloud Platform versions before 8.2.2203 did not validate the TLS certificates during Splunk-to-Splunk communications by default. Splunk peer communications configured properly with valid certificates were not vulnerable. However, an administrator could add a peer without a valid certificate and connections from misconfigured nodes without valid certificates did not fail by default.

For Splunk Enterprise, update to Splunk Enterprise version 9.0 or higher and Configure TLS host validation for Splunk-to-Splunk communications 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 validation for Splunk-to-Splunk communications.

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