Denial of Service (DoS) Affecting microsoft.aspnetcore.app.runtime.win-arm64 package, versions [7.0.0,7.0.10)
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Test your applications- Snyk ID SNYK-DOTNET-MICROSOFTASPNETCOREAPPRUNTIMEWINARM64-5831250
- published 9 Aug 2023
- disclosed 8 Aug 2023
- credit Benoit Foucher
Introduced: 8 Aug 2023
CVE-2023-38178 Open this link in a new tabHow to fix?
Upgrade Microsoft.AspNetCore.App.Runtime.win-arm64
to version 7.0.10 or higher.
Overview
Microsoft.AspNetCore.App.Runtime.win-arm64 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) in .NET Kestrel
where a malicious client can bypass QUIC
stream limit in HTTP/3 in both ASP.NET
and .NET
runtimes, resulting in exploitation of this vulnerability.
Note: .NET 6 included HTTP/3 support as a preview feature, which requires specific opt-in code. If you are using HTTP/3 in .NET 6 you must update your application to .NET 7, where the feature is supported, to fix the vulnerability. Future versions of .NET will disable the preview feature entirely.
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