Siemens (CVE-2021-41545)

high Tenable.ot Plugin ID 500787

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). When the controller receives a specific BACnet protocol packet, an exception causes the BACnet communication function to go into a out of work state and could result in the controller going into a factory reset state.

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

Solution

Refer to the vendor advisory.

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-662649.pdf

Plugin Details

Severity: High

ID: 500787

Version: 1.0

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 1/25/2023

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-41545

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/o:siemens:desigo_dxr2_firmware, cpe:/o:siemens:desigo_pxc3_firmware, cpe:/o:siemens:desigo_pxc4_firmware, cpe:/o:siemens:desigo_pxc5_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2022

Vulnerability Publication Date: 5/10/2022

Reference Information

CVE: CVE-2021-41545