CVE-2023-22939: Splunk risky Command Abuse disclosed february 2023

Try in Splunk Security Cloud

Description

In February 2023, Splunk disclosed several vulnerabilities affecting Splunk Enterprise commands deemed risky. The following hunting search includes the following commands and versions. Command ‘createrss’ (versions 8.1.13, 8.2.10), pivot (8.1.13,8.2.10,9.0.4), display.page.search.patterns.sensitivity(versions below 8.1.13,8.2.10,9.0.4), search_listener, map, collect (8.1.13,8.2.10,9.0.4). For more information please review Splunk Vulnerabilities Disclosure, February 2023. Link can be found in reference.

• Type: Hunting

• Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud

• Last Updated: 2023-02-14

• Author: Chase Franklin, Rod Soto, Eric McGinnis, Splunk

• ID: ee69374a-d27e-4136-adac-956a96ff60fd

AnnotationsATT&CK

ATT&CK

ID

Technique

Tactic

T1548

Abuse Elevation Control Mechanism

Privilege Escalation, Defense Evasion

Kill Chain Phase

• Exploitation

NIST

• DE.CM

CIS20

• CIS 3
• CIS 5
• CIS 16

CVESearch

1
2
3
4
5
6

| tstats count min(_time) as firstTime max(_time) as lastTime from datamodel=Splunk_Audit.Search_Activity where Search_Activity.search_type=adhoc Search_Activity.user!=splunk-system-user by Search_Activity.search Search_Activity.info Search_Activity.total_run_time Search_Activity.user Search_Activity.search_type 
| `drop_dm_object_name(Search_Activity)` 
| lookup splunk_risky_command splunk_risky_command as search output splunk_risky_command description vulnerable_versions CVE other_metadata 
| where splunk_risky_command != "false" 
| `splunk_risky_command_abuse_disclosed_february_2023_filter`

Macros

The SPL above uses the following Macros:

splunk_risky_command_abuse_disclosed_february_2023_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Lookups

The SPL above uses the following Lookups:

• splunk_risky_command with data

Required fields

List of fields required to use this analytic.

• search
• info
• user
• search_type
• count

How To Implement

Requires implementation of Splunk_Audit.Search_Activity datamodel.

Known False Positives

This search encompasses many commands.

Associated Analytic Story

• Splunk Vulnerabilities

RBA

Risk Score

Impact

Confidence

Message

25.0

50

50

Use of risky splunk command $splunk_risky_command$ detected by $user$

The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

Reference

• https://www.splunk.com/en_us/product-security.html

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

• https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1548/splunk/splunk_createrss_command_abuse.log

source | version: 1