SB2023071320 - Multiple vulnerabilities in Siemens SIMATIC CN 4100

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Main Vulnerability Database SB2023071320

SB2023071320 - Multiple vulnerabilities in Siemens SIMATIC CN 4100

Published: July 13, 2023

Security Bulletin ID SB2023071320
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper access control (CVE-ID: CVE-2023-29130)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the configuration files. A remote user can bypass implemented security restrictions, gain elevated privileges and control the target device.


2) Incorrect default permissions (CVE-ID: CVE-2023-29131)

CWE-ID: CWE-276 - Incorrect Default Permissions

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions in the SSH configuration. A remote user can bypass network isolation.


Remediation

Install update from vendor's website.

References