CVE-2023-21538: .NET Denial of Service Vulnerability
First published: Tue Jan 10 2023(Updated: )
.NET Denial of Service Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft .NET | =6.0.0 | |
| Microsoft PowerShell | =7.2 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 | |
| Microsoft .NET 6.0 | ||
| Microsoft PowerShell 7.2 | ||
| nuget/Microsoft.NetCore.App.Runtime.win-x86 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.win-x64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.win-arm64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.win-arm | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.osx-x64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.osx-arm64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-x64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-musl-x64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-musl-arm | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-arm64 | >=6.0.0<6.0.13 | 6.0.13 |
| nuget/Microsoft.NetCore.App.Runtime.linux-arm | >=6.0.0<6.0.13 | 6.0.13 |
| =6.0.0 | ||
| =7.2 | ||
| =36 | ||
| =37 |
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Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21538 (Advisory)
- https://github.com/dotnet/runtime/security/advisories/GHSA-8f7f-vqg5-jrv9
- https://nvd.nist.gov/vuln/detail/CVE-2023-21538
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21538
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GV5QDWYJ4C26JB7RTI55Z4O76WSH4FMV
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZI27LYW5C4Z4644WYIQWOXBZL7WIP2X6
- https://github.com/advisories/GHSA-8f7f-vqg5-jrv9 (Advisory)
Frequently Asked Questions
What is CVE-2023-21538?
CVE-2023-21538 is a .NET Denial of Service Vulnerability.
Which software versions are affected by CVE-2023-21538?
The affected software versions are Microsoft .NET 6.0, Microsoft PowerShell 7.2, and Fedoraproject Fedora 36 and 37.
How severe is CVE-2023-21538?
CVE-2023-21538 has a severity score of 7.5 (high).
How can I fix CVE-2023-21538 for Microsoft .NET 6.0?
To fix CVE-2023-21538 for Microsoft .NET 6.0, you can download the patch from the Microsoft website.
Where can I find more information about CVE-2023-21538?
You can find more information about CVE-2023-21538 on the Microsoft Security Response Center website.
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