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SPLUNK / PRODUCT SECURITY / SVD-2022-1105

Risky command safeguards bypass via ‘tstats’ command JSON in Splunk Enterprise

Advisory ID: SVD-2022-1105

Published: 2022-11-02

CVSSv3.1 Score: 8.1, High

CWE: CWE-20

CVE ID: CVE-2022-43565

Last Update: 2022-11-11

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

Bug ID: SPL-224121

Description

In Splunk Enterprise versions below 8.2.9 and 8.1.12, the way that the ‘tstats’ command handles Javascript Object Notation (JSON) lets an attacker bypass SPL safeguards for risky commands. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. 

Solution

For Splunk Enterprise, upgrade versions to 8.1.12, 8.2.9, or higher.

For Splunk Cloud Platform versions below 9.0.2203, Splunk is actively patching and monitoring the Splunk Cloud instances. To request an immediate upgrade, determine which version of Splunk Cloud Platform you're running, then create a new support case.

Product Status

ProductVersionComponentAffected VersionFixed Version
Splunk Enterprise8.1Search8.1.11 and lower8.1.12
Splunk Enterprise8.2Search8.2.0 to 8.2.88.2.9
Splunk Enterprise9.0SearchNot Affected-
Splunk Cloud Platform-Search9.0.2202 and lower9.0.2203

Mitigations and Workarounds

The vulnerability affects instances with Splunk Web enabled; disabling Splunk Web is a possible workaround. See Disable unnecessary Splunk Enterprise components and the web.conf configuration specification file for more information on disabling Splunk Web.

Detections

None

Severity 

Splunk rates the vulnerability as High, 8.1, with a CVSS Vectors of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

The vulnerability requires a user interaction within a browser of a privileged user. The vulnerability lets an attacker run risky commands with permissions of a highly privileged user. For more information on risky commands and potential impacts, see SPL safeguards for risky commands

If the Splunk Enterprise instance does not run Splunk Web, there is no impact and the severity is Informational.


Acknowledgements

Cuong Dong at Splunk


Changelog

2022-11-11: Added "Coung Dong" to Acknowledgements section


Questions? Submit your question to Splunk Support.