Package Instance

Security Update for the OPC UA .NET Standard Stack
This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an
unauthorized attacker to trigger a gradual degradation in performance.

Security Update for the OPC UA .NET Standard Stack
A vulnerability was discovered in OPC UA .NET Standard Stack that allows a malicious client or server to cause a peer to hang with a carefully crafted message sent during secure channel creation.

Memory Allocation with Excessive Size Value in OPCFoundation.NetStandard.Opc.Ua.Core
A vulnerability was discovered in the OPC UA .NET Standard Stack that allows a malicious client to cause a server to trigger an out of memory exception with a carefully crafted message.

Uncontrolled Resource Consumption in OPCFoundation.NetStandard.Opc.Ua.Core
A vulnerability was discovered in the OPC UA .NET Standard Stack that allows a malicious client to cause a server to trigger an out of memory exception by sending a large number of message chunks.

Security Update for the OPC UA .NET Standard Stack
This security update resolves a vulnerability in the OPC UA .NET Standard Stack that enables an unauthorized attacker to trigger a rapid increase in memory consumption.

Security Update for the OPC UA .NET Standard Stack
This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.

Note that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.

OPCFoundation.NetStandard.Opc.Ua.Core buffer-management vulnerability
A buffer-management vulnerability in OPC Foundation OPCFoundation.NetStandard.Opc.Ua.Core before 1.5.374.54 could allow remote attackers to exhaust memory resources. It is triggered when the system receives an excessive number of messages from a remote source. This could potentially lead to a denial of service (DoS) condition, disrupting the normal operation of the system.

Exposure of Sensitive Information in OPC UA .NET Standard Reference Server
This security update resolves a vulnerability in the OPC UA .NET Standard Reference Server that allows
remote attackers to send malicious requests that expose sensitive information.

https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf

Incorrect Implementation of Authentication Algorithm in OPCFoundation.NetStandard.Opc.Ua.Core
A vulnerability was discovered in the OPC UA .NET Standard Stack that
-  allows a malicious client or server to bypass the application authentication mechanism
-  and allow a connection to an untrusted peer.

Uncontrolled Resource Consumption in OPCFoundation.NetStandard.Opc.Ua.Core
A vulnerability was discovered in the OPC UA .NET Standard Stack that allows a malicious client to trigger a stack overflow exception in a server that exposes an HTTPS endpoint.

Improper Certificate Validation
A Privilege Elevation vulnerability in OPC UA .NET Standard Stack 1.4.363.107 could allow a rogue application to establish a secure connection.