VDB-238342 · CVE-2023-40595 · SVD-2023-0804

Splunk Enterprise up to 8.2.11/9.0.5/9.1.0 Query deserialization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Splunk Enterprise up to 8.2.11/9.0.5/9.1.0. It has been declared as very critical. Impacted is an unknown function of the component Query Handler. Executing a manipulation can lead to deserialization. This vulnerability is tracked as CVE-2023-40595. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Splunk Enterprise up to 8.2.11/9.0.5/9.1.0 (Log Management Software) and classified as very critical. This vulnerability affects some unknown processing of the component Query Handler. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In Splunk Enterprise versions lower than 8.2.12, 9.0.6, and 9.1.1, an attacker can execute a specially crafted query that they can then use to serialize untrusted data. The attacker can use the query to execute arbitrary code.

The weakness was disclosed 08/30/2023 as SVD-2023-0804. The advisory is available at advisory.splunk.com. This vulnerability was named CVE-2023-40595 since 08/16/2023. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/27/2023).

Upgrading to version 8.2.12, 9.0.6 or 9.1.1 eliminates this vulnerability.

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Productinfo

Type

Log Management Software

Vendor

Splunk

Name

Enterprise

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 9.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (Splunk Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Enterprise 8.2.12/9.0.6/9.1.1

Timelineinfo

08/16/2023 🔍
08/30/2023 +14 days 🔍
08/30/2023 +0 days 🔍
09/27/2023 +28 days 🔍

Sourcesinfo

Advisory: SVD-2023-0804
Status: Confirmed

CVE: CVE-2023-40595 (🔍)
GCVE (CVE): GCVE-0-2023-40595
GCVE (VulDB): GCVE-100-238342

Entryinfo

Created: 08/30/2023 19:30
Updated: 09/27/2023 06:48
Changes: 08/30/2023 19:30 (51), 09/27/2023 06:48 (11)
Complete: 🔍
Cache ID: 216::103