PT-2022-12295 · Unknown · Cp-8000 Master Module With I/O -25/+70°C+3

Published 2022-01-11 · Updated 2022-01-19 · CVE-2021-45033

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions CP-8000 MASTER MODULE WITH I/O -25/+70°C versions prior to V16.20 CP-8000 MASTER MODULE WITH I/O -40/+70°C versions prior to V16.20 CP-8021 MASTER MODULE versions prior to V16.20 CP-8022 MASTER MODULE WITH GPRS versions prior to V16.20

Description A vulnerability has been identified in the affected devices, where an undocumented debug port uses hard-coded default credentials. If this port is enabled by a privileged user, an attacker aware of the credentials could access an administrative debug shell on the affected device.

Recommendations For CP-8000 MASTER MODULE WITH I/O -25/+70°C versions prior to V16.20, update to version V16.20 or later. For CP-8000 MASTER MODULE WITH I/O -40/+70°C versions prior to V16.20, update to version V16.20 or later. For CP-8021 MASTER MODULE versions prior to V16.20, update to version V16.20 or later. For CP-8022 MASTER MODULE WITH GPRS versions prior to V16.20, update to version V16.20 or later. As a temporary workaround, consider disabling the undocumented debug port until a patch is available.

Fix

Using Hardcoded Credentials

Weakness Enumeration

CWE-798

Related Identifiers

CVE-2021-45033

Affected Products

Cp-8000 Master Module With I/O -25/+70°C

Cp-8000 Master Module With I/O -40/+70°C

Cp-8021 Master Module

Cp-8022 Master Module With Gprs

References · 4

• https://cert-portal.siemens.com/productcert/pdf/ssa-324998.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45033 · Security Note
• https://osv.dev/vulnerability/CVE-2021-45033 · Vendor Advisory
• https://t.me/cibsecurity/35231 · Telegram Post