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GHSA-cw98-9j8w-wxv9

HighCVSS 7.5 / 10
Published Oct 21, 2022·Last modified Dec 4, 2024
Affected Components(0)

No affected components available

Description

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 5.0, and .NET CORE 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

Microsoft is aware of a Denial of Service vulnerability, which exists in .NET 6.0, .NET 5.0, and .NET CORE 3.1 when parsing certain types of http form requests.

Affected Software

  • Any .NET 6.0 application running on .NET 6.0.2 or lower
  • Any .NET 5.0 application running on .NET 5.0.14 or lower
  • Any .NET Core 3.1 application running on .NET Core 3.1.22 or lower

Patches

To fix the issue, please install the latest version of .NET 6.0 or .NET 5.0 or .NET Core 3.1.. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.

  • If you're using .NET Core 6.0, you should download and install Runtime 6.0.3 or SDK 6.0.201 (for Visual Studio 2022 v17.1) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

  • If you're using .NET 5.0, you should download and install Runtime 5.0.15 or SDK 5.0.406 (for Visual Studio 2019 v16.11) or SDK 5.0.212 (for Visual Studio 2011 v16.9) from https://dotnet.microsoft.com/download/dotnet-core/5.0.

  • If you're using .NET Core 3.1, you should download and install Runtime 3.1.23 or SDK 3.1.417 (for Visual Studio 2019 v16.7.26) from https://dotnet.microsoft.com/download/dotnet-core/5.0. .NET 6.0 and .NET 5.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

.NET 6.0 and .NET 5.0 and, .NET Core 3.1 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Other Details

  • Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/212
  • An Issue for this can be found at https://github.com/dotnet/aspnetcore/issues/40598
  • MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/ CVE-2022-24464
Risk Scores
Base Score
7.5

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.

Threat Intelligence
6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
3.31%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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