Reflected Cross-Site Scripting via the radio template in Splunk Enterprise
Advisory ID: SVD-2022-1108
CVE ID: CVE-2022-43568
Published: 2022-11-02
Last Update: 2022-11-02
CVSSv3.1 Score: 8.8, High, High
CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-79
Bug ID: SPL-228379
Description
In Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, a View allows for a Reflected Cross Site Scripting via JavaScript Object Notation (JSON) in a query parameter when output_mode=radio.
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.
Product Status
| Product | Version | Component | Affected Version | Fix Version |
|---|---|---|---|---|
| Splunk Enterprise | 8.1 | Splunk Web | 8.1.11 and lower | 8.1.12 |
| Splunk Enterprise | 8.2 | Splunk Web | 8.2.0 to 8.2.8 | 8.2.9 |
| Splunk Enterprise | 9.0 | Splunk Web | 9.0.0 to 9.0.1 | 9.0.2 |
| Splunk Cloud Platform | Splunk Web | 9.0.2203.4 and lower | 9.0.2205 |
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
Splunk versions 8.1.0, 8.2.0, and 9.0.0 are vulnerable to reflected cross site scripting (XSS) exploitation leading to Local File Inclusion (LFI) in the Splunk Assist application. This detection search provides information on exploitation attempts.
Severity
Splunk rates the vulnerability as High, 8.8, with a CVSS Vectors of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability requires user interaction within a browser. If the Splunk Enterprise instance does not run Splunk Web, there is no impact and the severity is Informational.
Acknowledgments
Danylo Dmytriiev (DDV_UA)