Detections
Analytics

Siemens SIMATIC CP 44x-1 RNA Uncontrolled Resource Consumption (CVE-2022-27640)

medium Tenable OT Security Plugin ID 501109

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18).
The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.

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 users update to the latest software versions:

- SIMATIC CP 442-1 RNA: Update to v1.5.18 or later
- SIMATIC CP 443-1 RNA: Update to v1.5.18 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 the recommendations in the product manuals.

For additional information, please refer to Siemens Security Advisory SSA-480937

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf

https://www.cisa.gov/news-events/ics-advisories/icsa-22-132-11

Plugin Details

Severity: Medium

ID: 501109

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 5/2/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2022-27640

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_cp_442-1_rna_firmware, cpe:/o:siemens:simatic_cp_443-1_rna_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 5/20/2022

Vulnerability Publication Date: 5/20/2022

Reference Information

CVE: CVE-2022-27640

CWE: 400