Siemens SIMATIC CN 4100 prior 2.5 SSH Configuration default permission

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Siemens SIMATIC CN 4100. Affected by this issue is some unknown functionality of the component SSH Configuration Handler. Executing a manipulation can lead to default permission. This vulnerability is tracked as CVE-2023-29131. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Siemens SIMATIC CN 4100 (SCADA Software). This vulnerability affects an unknown functionality of the component SSH Configuration Handler. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5). Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.

The weakness was disclosed 07/11/2023 as ssa-313488. The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2023-29131 since 03/31/2023. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

Upgrading to version 2.5 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector (Siemens AG): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SIMATIC CN 4100 2.5

Timelineinfo

03/31/2023 🔍
07/11/2023 +102 days 🔍
07/11/2023 +0 days 🔍
07/27/2023 +16 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-313488
Status: Confirmed

CVE: CVE-2023-29131 (🔍)
GCVE (CVE): GCVE-0-2023-29131
GCVE (VulDB): GCVE-100-233542

Entryinfo

Created: 07/11/2023 14:59
Updated: 07/27/2023 18:29
Changes: 07/11/2023 14:59 (51), 07/27/2023 18:29 (11)
Complete: 🔍
Cache ID: 216::103

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