SB2025031224 - Multiple vulnerabilities in Siemens OPC UA

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Main Vulnerability Database SB2025031224

SB2025031224 - Multiple vulnerabilities in Siemens OPC UA

Published: March 12, 2025

Security Bulletin ID SB2025031224
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Authentication Bypass by Primary Weakness (CVE-ID: CVE-2024-42513)

CWE-ID: CWE-305 - Authentication Bypass by Primary Weakness

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


The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to insufficient access control in the OPC UA .NET Standard Stack. A remote attacker can bypass application authentication when using HTTPS endpoints.


2) Information Exposure Through Timing Discrepancy (CVE-ID: CVE-2024-42512)

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

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


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the an exploitable timing discrepancy issue in the OPC UA .NET Standard Stack. A remote attacker can bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.


Remediation

Install update from vendor's website.

References