Siemens Desigo PXM Devices Exposure of Sensitive Information to an Unauthorized Actor (CVE-2022-40177)

medium Tenable OT Security Plugin ID 500777

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in Desigo PXM30-1 (All versions < V02.20.126.11-41), Desigo PXM30.E (All versions < V02.20.126.11-41), Desigo PXM40-1 (All versions < V02.20.126.11-41), Desigo PXM40.E (All versions < V02.20.126.11-41), Desigo PXM50-1 (All versions < V02.20.126.11-41), Desigo PXM50.E (All versions < V02.20.126.11-41), PXG3.W100-1 (All versions < V02.20.126.11-37), PXG3.W100-2 (All versions < V02.20.126.11-41), PXG3.W200-1 (All versions < V02.20.126.11-37), PXG3.W200-2 (All versions < V02.20.126.11-41).
Endpoints of the Operation web application that interpret and execute Axon language queries allow file read access to the device file system with root privileges. By supplying specific I/O related Axon queries, a remote low-privileged attacker can read sensitive files on the device.

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 released updates for the affected products and recommends users update to the latest versions:

- Desigo PXM30-1: Update to V02.20.126.11-41 or later
- Desigo PXM30.E: Update to V02.20.126.11-41 or later
- Desigo PXM40-1: Update to V02.20.126.11-41 or later
- Desigo PXM40.E: Update to V02.20.126.11-41 or later
- Desigo PXM50-1: Update to V02.20.126.11-41 or later
- Desigo PXM50.E: Update to V02.20.126.11-41 or later
- PXG3.W100-1: Update to V02.20.126.11-37 or later
- PXG3.W100-2: Update to V02.20.126.11-41 or later
- PXG3.W200-1: Update to V02.20.126.11-37 or later
- PXG3.W200-2: Update to V02.20.126.11-41 or later

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 in HTML or CSAF formats.

Plugin Details

Severity: Medium

ID: 500777

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 9/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-40177

CVSS v3

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 5

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

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

Vulnerability Information

CPE: cpe:/o:siemens:desigo_pxm40-1_firmware, cpe:/o:siemens:desigo_pxm30-1_firmware, cpe:/o:siemens:desigo_pxm40.e_firmware, cpe:/o:siemens:pxg3.w200-1_firmware, cpe:/o:siemens:pxg3.w100-1_firmware, cpe:/o:siemens:desigo_pxm30.e_firmware, cpe:/o:siemens:desigo_pxm50-1_firmware, cpe:/o:siemens:pxg3.w100-2_firmware, cpe:/o:siemens:pxg3.w200-2_firmware, cpe:/o:siemens:desigo_pxm50.e_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 10/11/2022

Vulnerability Publication Date: 10/11/2022

Reference Information

CVE: CVE-2022-40177

CWE: 200

ICSA: 22-286-06

Detections

Analytics