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AUSCERT External Security Bulletin Redistribution
ESB-2023.0893
SVD-2023-0202: Persistent Cross-Site Scripting through a
Base64-encoded Image in a View in Splunk Enterprise
15 February 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Splunk Enterprise
Splunk Cloud Platform
Publisher: Splunk
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2023-22932
Original Bulletin:
https://advisory.splunk.com//advisories/SVD-2023-0202
Comment: CVSS (Max): 8.0 CVE-2023-22932 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N)
CVSS Source: Splunk
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
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Persistent Cross-Site Scripting through a Base64-encoded Image in a View in
Splunk Enterprise
Advisory ID: SVD-2023-0202
CVE ID: CVE-2023-22932
Published: 2023-02-14
Last Update: 2023-02-14
CVSSv3.1 Score: 8.0, High
CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CWE: CWE-79
Bug ID: SPL-232819
Description
In Splunk Enterprise 9.0 versions before 9.0.4, a View allows for Cross-Site
Scripting (XSS) through the error message in a Base64-encoded image. The
vulnerability affects instances with Splunk Web enabled. It does not affect
Splunk Enterprise versions below 9.0.
Solution
For Splunk Enterprise 9.0 versions, upgrade to 9.0.4 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 - Not affected -
Splunk Enterprise 8.2 - Not affected -
Splunk Enterprise 9.0 Splunk Web 9.0.0 to 9.0.3 9.0.2209.3
Splunk Cloud Platform Splunk Web 9.0.2209 and lower 9.0.2209.3
Mitigations and Workarounds
If users do not log in to Splunk Web on indexers in a distributed environment,
disable Splunk Web on those indexers. See Disable unnecessary Splunk Enterprise
components and the web.conf configuration specification file for more
information on disabling Splunk Web.
Detections
o Persistent XSS in RapidDiag through User Interface Views
This hunting search provides information on users that might have potentially
added a malicious payload through this vulnerability, and what users were
exposed to the payload.
Severity
Splunk rated the vulnerability as High, 8.0, with a CVSSv3.1 vector of CVSS:3.1
/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
If the Splunk Enterprise instance does not run Splunk Web, there is no impact
and the severity is Informational.
Acknowledgments
Tim Coen (foobar7)
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