CVE-2019-19135 : What You Need to Know

A vulnerability in OPCFoundation.NetStandard.Opc.Ua before version 1.4.359.31 allows for potential reuse of encrypted user credentials transmitted over the network.

Understanding CVE-2019-19135

This CVE entry highlights a security issue in the OPC Foundation OPC UA .NET Standard codebase version 1.4.357.28.

What is CVE-2019-19135?

The vulnerability arises from servers not generating sufficiently random numbers, enabling attackers in the middle of communication to potentially reuse encrypted user credentials.

The Impact of CVE-2019-19135

The vulnerability could lead to the compromise of sensitive user credentials transmitted over the network, posing a risk to data confidentiality and integrity.

Technical Details of CVE-2019-19135

This section delves into the specifics of the vulnerability.

Vulnerability Description

The issue lies in the inadequate generation of random numbers by servers in OPCFoundation.NetStandard.Opc.Ua before version 1.4.359.31.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

Attackers positioned in the middle of communication can exploit the lack of randomness in number generation to potentially reuse encrypted user credentials.

Mitigation and Prevention

Protective measures to address the CVE-2019-19135 vulnerability.

Immediate Steps to Take

Update to version 1.4.359.31 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Implement secure communication protocols to prevent interception of sensitive data.
Regularly review and update security configurations to address emerging threats.

Patching and Updates

Stay informed about security bulletins and updates from OPC Foundation to promptly apply patches addressing vulnerabilities.