CVE-2022-29863 Memory Allocation with Excessive Size Value in OPCFoundation.NetStandard.Opc.Ua.Core

High 7.5 Published 16 Jun 2022 Updated 3 Aug 2024

Remote attackers can crash the application by sending crafted messages that trigger excessive memory allocation in the OPC UA .NET Standard Stack.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-29863?

CVE-2022-29863 is a high-severity denial of service vulnerability in n/a, published on 16 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OPC UA .NET Standard Stack 1.04.368 allows remote attacker to cause a crash via a crafted message that triggers excessive memory allocation.

Weakness: CWE-770

Which versions are affected by CVE-2022-29863?

2 open source packages ship an affected version, including OPCFoundation.NetStandard.Opc.Ua.Core. It affects 1 product.

Package	Affected	Fixed in
`OPCFoundation.NetStandard.Opc.Ua.Core` NuGet	All versions	`1.4.368.58`
`OPCFoundation.NetStandard.Opc.Ua.Core` NuGet	All versions	`1.4.368.58`

Products include Opcfoundation Ua .Net Standard Stack.

How do I fix CVE-2022-29863?

Upgrade OPCFoundation.NetStandard.Opc.Ua.Core to 1.4.368.58 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-29863 being exploited?

There is no known exploitation of CVE-2022-29863 in the wild and no public exploit code.

Sources

Also known as GHSA-r7pq-3x6p-7jcm.