Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2023.1000
SVD-2023-0204: SPL Command Safeguards Bypass via the 'pivot'
SPL Command in Splunk Enterprise
17 February 2023
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Splunk Enterprise
Publisher: Splunk
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Resolution: Patch/Upgrade
CVE Names: CVE-2023-22934
Original Bulletin:
https://advisory.splunk.com//advisories/SVD-2023-0204
Comment: CVSS (Max): 7.3 CVE-2023-22934 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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:U/C:H/I:H/A:N
- --------------------------BEGIN INCLUDED TEXT--------------------
SPL Command Safeguards Bypass via the 'pivot' SPL Command in Splunk Enterprise
Advisory ID: SVD-2023-0204
CVE ID: CVE-2023-22934
Published: 2023-02-14
Last Update: 2023-02-14
CVSSv3.1 Score: 7.3, High
CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE: CWE-20
Bug ID: SPL-228734
Description
In Splunk Enterprise versions below 8.1.13, 8.2.10, and 9.0.4, the 'pivot'
search processing language (SPL) command lets a search bypass SPL safeguards
for risky commands using a saved search job. The vulnerability requires an
authenticated user to craft the saved job and a higher privileged user to
initiate a request within their browser. The vulnerability affects instances
with Splunk Web enabled.
Solution
For Splunk Enterprise, upgrade versions to 8.1.13, 8.2.10, 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 Splunk Web 8.1.12 and lower 8.1.13
Splunk Enterprise 8.2 Splunk Web 8.2.0 to 8.2.9 8.2.10
Splunk Enterprise 9.0 Splunk Web 9.0.0 to 9.0.3 9.0.4
Splunk Cloud Platform - Splunk Web 9.2.2209 and lower 9.2.2209.3
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
o Splunk Risky Command Abuse disclosed February 2023
This hunting search provides information on potential abuse of the 'pivot' SPL
command on Splunk Enterprise versions below 8.1.13, 8.2.10, and 9.0.4.
Severity
Splunk rated the vulnerability as High, 7.3, with a CVSSv3.1 vector of CVSS:3.1
/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N. The vulnerability requires user access to
craft a saved job, which reduces the severity compared to other SPL command
safeguard bypasses.
If the Splunk Enterprise instance does not run Splunk Web, there is no impact
and the severity is Informational.
Acknowledgments
Anton (therceman)
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: https://auscert.org.au/gpg-key/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=LFEP
-----END PGP SIGNATURE-----