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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.3135
        SVD-2023-0611: Denial of Service via the 'dump' SPL command
                                2 June 2023

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Splunk Enterprise
                   Splunk Cloud Platform
Publisher:         Splunk
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Windows
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-32716  

Original Bulletin: 
   https://advisory.splunk.com//advisories/SVD-2023-0611

Comment: CVSS (Max):  6.5 CVE-2023-32716 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
         CVSS Source: Splunk
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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Denial of Service via the 'dump' SPL command

Advisory ID: SVD-2023-0611

CVE ID: CVE-2023-32716

Published: 2023-06-01

Last Update: 2023-06-01

CVSSv3.1 Score: 6.5, Medium

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

CWE: CWE-754

Bug ID: SPL-235572

Description

An attacker can exploit a vulnerability in the 'dump' SPL command to cause a
denial of service by crashing the Splunk daemon. If the attacker supplies a
longer-than-expected filename with the command, a memory access violation, or
segmentation fault, occurs, which results in a crash of the Splunk platform
instance.

Solution

For Splunk Enterprise, upgrade to versions 9.0.5, 8.2.11, 8.1.14, and higher.

For Splunk Cloud Platform, Splunk is actively monitoring and patching affected
instances.

Product Status

       Product        Version Component   Affected Version  Fix Version
Splunk Enterprise     8.1     Splunk Web 8.1.0 to 8.1.13    8.1.14
Splunk Enterprise     8.2     Splunk Web 8.2.0 to 8.2.10    8.2.11
Splunk Enterprise     9.0     Splunk Web 9.0.0 to 9.0.4     9.0.5
Splunk Cloud Platform         Splunk Web 9.0.2303 and below 9.0.2303.100

Mitigations and Workarounds

Remove the 'run_dump' capability from any roles that users hold.

Detections

  o Splunk DoS via dump SPL command

This hunting detection search provides information about possible denial of
service exploitation attempts in Splunk Enterprise versions below 9.0.5,
8.2.11, and 8.1.14.

Severity

Splunk rated this vulnerability as Medium, 6.5, with a CVSSv3.1 vector of
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Acknowledgments

Danylo Dmytriiev (DDV_UA)

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