Siemens Multiple Products Denial of Service (CVE-2023-46156)

high Tenable OT Security Plugin ID 501837

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
- Limit access to port 102/tcp to trusted users and systems only Product-specific remediations or mitigations can be found in the section 'Affected Products and Solution' of the vendor advisory.

Plugin Details

Severity: High

ID: 501837

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 12/18/2023

Updated: 5/28/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2023-46156

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_firmware:3.1.2, cpe:/o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware, cpe:/o:siemens:simatic_s7-1500_firmware, cpe:/o:siemens:simatic_s7-1500_firmware:3.1.0, cpe:/o:siemens:simatic_et_200sp_firmware, cpe:/o:siemens:simatic_et_200pro_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/12/2023

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2023-46156

CWE: 416

Detections

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