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SPLUNK / PRODUCT SECURITY / SVD-2022-1110

XML External Entity Injection through a custom View in Splunk Enterprise

Advisory ID: SVD-2022-1110

Published: 2022-11-02

CVSSv3.1 Score: 8.8, High

CWE: CWE-611

CVE ID: CVE-2022-43570

Last Update: 2022-11-02

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

Bug ID: SPL-228310

Description

In Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, an authenticated user can perform an extensible markup language (XML) external entity (XXE) injection via a custom View. The XXE injection causes Splunk Web to embed incorrect documents into an error.

Solution

For Splunk Enterprise, upgrade versions to 8.1.12, 8.2.9, 9.0.2, or higher.

For Splunk Cloud Platform, 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 Enterprise8.1Splunk Web8.1.11 and lower8.1.12
Splunk Enterprise8.2Splunk Web
8.2.0 to 8.2.88.2.9
Splunk Enterprise9.0Splunk Web
9.0.0 to 9.0.19.0.2
Splunk Cloud Platform-Splunk Web
9.0.2208 and lower9.0.2209

Mitigations and Workarounds

Workarounds include restricting who can upload lookup files and disabling Splunk Web. The vulnerability affects instances with Splunk Web enabled. 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, 8.8, with a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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

Acknowledgments

Danylo Dmytriiev (DDV_UA)

Questions? Submit your question to Splunk Support.