Siemens SICAM A8000 Improper Access Control (CVE-2021-45034)

high Tenable OT Security Plugin ID 501067

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O
-25/+70C (All versions < V16.20), CP-8000 MASTER MODULE WITH I/O
-40/+70C (All versions < V16.20), CP-8021 MASTER MODULE (All versions < V16.20), CP-8022 MASTER MODULE WITH GPRS (All versions < V16.20).
The web server of the affected system allows access to logfiles and diagnostic data generated by a privileged user. An unauthenticated attacker could access the files by knowing the corresponding download links.

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 updating to v16.20 or later.

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

Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

For more information about these vulnerabilities, see Siemens’ security advisory SSA-324998

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-324998.pdf

https://www.cisa.gov/news-events/ics-advisories/icsa-22-013-02

http://seclists.org/fulldisclosure/2022/Apr/20

http://www.nessus.org/u?42d5421e

Plugin Details

Severity: High

ID: 501067

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 4/20/2023

Updated: 9/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-45034

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:siemens:cp-8022_master_module_with_gprs_firmware, cpe:/o:siemens:cp-8000_master_module_with_i%2fo_-40%2f%2b70_firmware, cpe:/o:siemens:cp-8021_master_module_firmware, cpe:/o:siemens:cp-8000_master_module_with_i%2fo_-25%2f%2b70_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/11/2022

Vulnerability Publication Date: 1/11/2022

Reference Information

CVE: CVE-2021-45034

CWE: 532

ICSA: 22-013-02