CVE-2022-24375: Snyk Vulnerability Database | Snyk

**Denial of Service (DoS) Affecting node-opcua package, versions **<2.74.0****

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• snyk-id

  SNYK-JS-NODEOPCUA-2988725

• published

  22 Aug 2022

• disclosed

  22 Aug 2022

• credit

  Vera Mens, Uri Katz, Sharon Brizinov of Team82 (Claroty Research)

How to fix?

Upgrade node-opcua to version 2.74.0 or higher.

Overview

node-opcua is an implementation of a OPC UA stack fully written in javascript and nodejs

Affected versions of this package are vulnerable to Denial of Service (DoS) when bypassing the limitations for excessive memory consumption by sending multiple CloseSession requests with the deleteSubscription parameter equal to False.

Details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

• High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

• Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package