Siemens SCALANCE LPE9403 Improper Neutralization of Special Elements Used in a Command (CVE-2023-27407)

critical Tenable OT Security Plugin ID 501139

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying operating system as the root user.

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

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 workaround/mitigation users can apply to reduce risk:

- SCALANCE LPE9403 (6GK5998-3GS00-2AC2): Update to V2.1 or later version.

As a general security measure, Siemens strongly 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 the recommendations in the product manuals.

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

For further inquiries on security vulnerabilities in Siemens products, users should contact the Siemens ProductCERT.

For more information, see the associated Siemens security advisory SSA-325383 in HTML and CSAF.

Plugin Details

Severity: Critical

ID: 501139

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 5/15/2023

Updated: 4/11/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2023-27407

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

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

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_lpe9403_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 5/9/2023

Vulnerability Publication Date: 5/9/2023

Reference Information

CVE: CVE-2023-27407

CWE: 78

Detections

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