SB2021051404 - Information disclosure in OPC UA Products Built with the .NET Framework

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Main Vulnerability Database SB2021051404

SB2021051404 - Information disclosure in OPC UA Products Built with the .NET Framework

Published: May 14, 2021

Security Bulletin ID SB2021051404
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Information disclosure (CVE-ID: CVE-2021-27434)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the OPC UA .NET Framework. A remote attacker can gain unauthorized access to sensitive information on the system.

Note: This vulnerability affects the following OPC UA products:

Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) 


Remediation

Install update from vendor's website.

References