Siemens SCALANCE X-200RNA Switch Devices Use of Insufficiently Random Values (CVE-2022-46353)

critical Tenable OT Security Plugin ID 501597

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). 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 released updates for the affected products and recommends updating to the latest versions:

- Update to V3.2.7 or later version

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

- Restrict access to affected systems, especially to ports 22/TCP, 80/TCP, 443/TCP, and 161/UDP to only trusted IP addresses.
- Disable the simple network management protocol (SNMP) service if not required and if the product supports disabling.
- Deactivate the webserver if not required and if the product supports deactivation.

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 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 Siemens ProductCERT.

For more information, see the associated Siemens security advisory SSA-363821 in HTML and CSAF.

Plugin Details

Severity: Critical

ID: 501597

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 8/3/2023

Updated: 9/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2022-46353

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:6gk5204-0bs00-3la3_firmware, cpe:/o:siemens:6gk5204-0bs00-2na3_firmware, cpe:/o:siemens:6gk5204-0ba00-2kb2_firmware, cpe:/o:siemens:6gk5204-0ba00-2mb2_firmware, cpe:/o:siemens:6gk5204-0bs00-3pa3_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2022

Vulnerability Publication Date: 12/13/2022

Reference Information

CVE: CVE-2022-46353

CWE: 330

ICSA: 22-349-02

Detections

Analytics