SB2021051404 - Information disclosure in OPC UA Products Built with the .NET Framework
Published: May 14, 2021
Security Bulletin ID
SB2021051404
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2021-27434)
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.