Denial of Service (DoS) Affecting microsoft.aspnetcore.app.runtime.win-x86 package, versions [3.1.0,3.1.11)[5.0.0,5.0.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-DOTNET-MICROSOFTASPNETCOREAPPRUNTIMEWINX86-3070935
  • published27 Oct 2022
  • disclosed24 May 2022
  • creditUnknown

Introduced: 24 May 2022

CVE-2021-1723  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Microsoft.AspNetCore.App.Runtime.win-x86 to version 3.1.11, 5.0.2 or higher.

Overview

Microsoft.AspNetCore.App.Runtime.win-x86 is a package providing a default set of APIs for building an ASP.NET Core application. Contains assets used for self-contained deployments.

Affected versions of this package are vulnerable to Denial of Service (DoS) due to the way the Kestrel web server parses HTTP/2 requests.

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

CVSS Scores

version 3.1