Detections
Analytics

Siemens SIMATIC CP products Improper Access Control (CVE-2023-37194)

medium Tenable OT Security Plugin ID 502001

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SIMATIC CP 1604 (All versions), SIMATIC CP 1616 (All versions), SIMATIC CP 1623 (All versions), SIMATIC CP 1626 (All versions), SIMATIC CP 1628 (All versions). The kernel memory of affected devices is exposed to user-mode via direct memory access (DMA) which could allow a local attacker with administrative privileges to execute arbitrary code on the host system without any restrictions.

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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

- Ensure that only trusted persons have access to the system and avoid the configuration of additional accounts.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-784849 in HTML and CSAF.

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-784849.pdf

https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-01

Plugin Details

Severity: Medium

ID: 502001

File Name: tenable_ot_siemens_CVE-2023-37194.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 2/20/2024

Updated: 2/14/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2023-37194

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_cp_1626_firmware:-, cpe:/o:siemens:simatic_cp_1616_firmware:-, cpe:/o:siemens:simatic_cp_1604_firmware:-, cpe:/o:siemens:simatic_cp_1623_firmware:-, cpe:/o:siemens:simatic_cp_1628_firmware:-

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 10/10/2023

Vulnerability Publication Date: 10/10/2023

Reference Information

CVE: CVE-2023-37194

CWE: 284