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Microsoft Security Advisory CVE-2024-43484 | .NET Denial of Service Vulnerability #108676

Open rbhanda opened 1 week ago

rbhanda commented 1 week ago

Microsoft Security Advisory CVE-2024-43484 | .NET Denial of Service Vulnerability

Executive summary

Microsoft is releasing this security advisory to provide information about a vulnerability in System.IO.Packaging. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

The System.IO.Packaging library may allow untrusted inputs to influence algorithmically complex operations, leading to denial of service.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/328

Mitigation factors

Microsoft has not identified any mitigating factors for this vulnerability.

Affected Packages

The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below

.NET 9

Package name Affected version Patched version
System.IO.Packaging >= 9.0.0-preview.1.24080.9, <= 9.0.0-rc.1.24431.7 9.0.0-rc.2.24473.5

.NET 8

Package name Affected version Patched version
System.IO.Packaging >= 8.0.0-preview.1.23110.8, <= 8.0.0 8.0.1

.NET 6

Package name Affected version Patched version
System.IO.Packaging >= 6.0.0-preview.1.21102.12, <= 6.0.0 6.0.1

Advisory FAQ

How do I know if I am affected?

If you have a runtime or SDK with a version listed, or an affected package listed in affected software or affected packages, you're exposed to the vulnerability.

How do I fix the issue?

.NET Core SDK (reflecting any global.json):

 Version:   8.0.200
 Commit:    8473146e7d

Runtime Environment:

 OS Name:     Windows
 OS Version:  10.0.18363
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\6.0.300\

Host (useful for support):

  Version: 8.0.3
  Commit:  8473146e7d

.NET Core SDKs installed:

  8.0.200 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:

  Microsoft.AspAspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspAspNetCore.App]
  Microsoft.AspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.WindowsDesktop.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

.NET 8.0 and .NET 6.0 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.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 8.0 or .NET 6.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2024-43484

Revisions

V1.0 (October 08, 2024): Advisory published.

Version 1.0

Last Updated 2024-10-08

ryannewington commented 1 week ago

Nuget doesn't have an 8.0.10, only an 8.0.1 published earlier today, but that is marked as vulnerable as well

rbhanda commented 1 week ago

Nuget doesn't have an 8.0.10, only an 8.0.1 published earlier today, but that is marked as vulnerable as well

My apologies for this. It seems, there is a version number issue in three of our advisories we published today. I have updated all of them but it might take some time until they get reflect on alerts

ryannewington commented 1 week ago

Thanks for confirming @rbhanda - Just so be clear, 8.0.1 is the correct package we should be using? Or is 8.0.10 coming out soon?

rbhanda commented 1 week ago

Thanks for confirming @rbhanda - Just so be clear, 8.0.1 is the correct package we should be using? Or is 8.0.10 coming out soon?

8.0.1 is the correct version. it should be marked as safe as soon as the nuget system picks up the latest changes

ryannewington commented 1 week ago

Brilliant! Thanks again

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