Siemens SCALANCE X-300 Switches Use of Insufficiently Random Values (CVE-2022-25752)

critical Tenable OT Security Plugin ID 500781

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SCALANCE X302-7 EEC (230V), SCALANCE X302-7 EEC (230V, coated), SCALANCE X302-7 EEC (24V), SCALANCE X302-7 EEC (24V, coated), SCALANCE X302-7 EEC (2x 230V), SCALANCE X302-7 EEC (2x 230V, coated), SCALANCE X302-7 EEC (2x 24V), SCALANCE X302-7 EEC (2x 24V, coated), SCALANCE X304-2FE, SCALANCE X306-1LD FE, SCALANCE X307-2 EEC (230V), SCALANCE X307-2 EEC (230V, coated), SCALANCE X307-2 EEC (24V), SCALANCE X307-2 EEC (24V, coated), SCALANCE X307-2 EEC (2x 230V), SCALANCE X307-2 EEC (2x 230V, coated), SCALANCE X307-2 EEC (2x 24V), SCALANCE X307-2 EEC (2x 24V, coated), SCALANCE X307-3, SCALANCE X307-3, SCALANCE X307-3LD, SCALANCE X307-3LD, SCALANCE X308-2, SCALANCE X308-2, SCALANCE X308-2LD, SCALANCE X308-2LD, SCALANCE X308-2LH, SCALANCE X308-2LH, SCALANCE X308-2LH+, SCALANCE X308-2LH+, SCALANCE X308-2M, SCALANCE X308-2M, SCALANCE X308-2M PoE, SCALANCE X308-2M PoE, SCALANCE X308-2M TS, SCALANCE X308-2M TS, SCALANCE X310, SCALANCE X310, SCALANCE X310FE, SCALANCE X310FE, SCALANCE X320-1 FE, SCALANCE X320-1-2LD FE, SCALANCE X408-2, SCALANCE XR324-12M (230V, ports on front), SCALANCE XR324-12M (230V, ports on front), SCALANCE XR324-12M (230V, ports on rear), SCALANCE XR324-12M (230V, ports on rear), SCALANCE XR324-12M (24V, ports on front), SCALANCE XR324-12M (24V, ports on front), SCALANCE XR324-12M (24V, ports on rear), SCALANCE XR324-12M (24V, ports on rear), SCALANCE XR324-12M TS (24V), SCALANCE XR324-12M TS (24V), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (24V, ports on front), SCALANCE XR324-4M EEC (24V, ports on front), SCALANCE XR324-4M EEC (24V, ports on rear), SCALANCE XR324-4M EEC (24V, ports on rear), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (2x 24V, ports on front), SCALANCE XR324-4M EEC (2x 24V, ports on front), SCALANCE XR324-4M EEC (2x 24V, ports on rear), SCALANCE XR324-4M EEC (2x 24V, ports on rear), SCALANCE XR324-4M PoE (230V, ports on front), SCALANCE XR324-4M PoE (230V, ports on rear), SCALANCE XR324-4M PoE (24V, ports on front), SCALANCE XR324-4M PoE (24V, ports on rear), SCALANCE XR324-4M PoE TS (24V, ports on front), SIPLUS NET SCALANCE X308-2. The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

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 recommends upgrading all X-300 switch family devices to v4.1.4 or later.

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

- Restrict access to the affected systems, especially to Ports 22/TCP, 161/UDP, and 443/TCP and use trusted IP addresses only.
- Disable SNMP service, if possible.
- Deactivate the webserver if not required, and if deactivation is supported by the product.

As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the environment according to the Siemens operational guidelines for industrial security and follow the recommendations in the product manuals.

For additional information, please refer to Siemens Security Advisory SSA-836527

Plugin Details

Severity: Critical

ID: 500781

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 3/10/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2022-25752

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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:scalance_xr324-4m_eec_%28100-240vac%2f60-250vdc%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%282x_230v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x310fe_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_poe_ts_%2824v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x310_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_poe_%2824v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%282x_100-240vac%2f60-250vdc%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-12m_%28230v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x320-1_fe_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%282x_230v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2m_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%282x_24v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2m_ts_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_poe_%2824v%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2lh%2b_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%282x_230v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%282x_24v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%2824v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%282x_100-240vac%2f60-250vdc%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-12m_%2824v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-12m_%2824v%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%282x_230v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%282x_24v%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_poe_%28230v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%2824v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-3ld_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%28230v%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-12m_ts_%2824v%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%28100-240vac%2f60-250vdc%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-3_firmware:4.1.4, cpe:/o:siemens:siplus_net_scalance_x308-2_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-12m_%28230v%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%2824v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%28230v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%282x_24v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2ld_firmware:4.1.4, cpe:/o:siemens:scalance_x304-2fe_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2lh_firmware:4.1.4, cpe:/o:siemens:scalance_x408-2_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_poe_%28230v%2c_ports_on_rear%29_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%28230v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%282x_24v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_x308-2m_poe_firmware:4.1.4, cpe:/o:siemens:scalance_x306-1ld_fe_firmware:4.1.4, cpe:/o:siemens:scalance_x307-2_eec_%2824v%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%2824v%2c_ports_on_front%29_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%282x_24v%29_firmware:4.1.4, cpe:/o:siemens:scalance_x320-1-2ld_fe_firmware:4.1.4, cpe:/o:siemens:scalance_x302-7_eec_%28230v%2c_coated%29_firmware:4.1.4, cpe:/o:siemens:scalance_xr324-4m_eec_%2824v%2c_ports_on_rear%29_firmware:4.1.4

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 4/12/2022

Vulnerability Publication Date: 4/12/2022

Reference Information

CVE: CVE-2022-25752

CWE: 330

ICSA: 22-104-09

Detections

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