CVE-2021-26423
High
Description
.NET Core and Visual Studio Denial of Service Vulnerability
SeverityHigh
CVSS7.5
Exploit probability—
Product
Microsoft .net
PublishedAug 12, 2021
First seenAug 12, 2021
How to fix
Update
- microsoft powershell_core7.0.7, 7.1.4 or later
- Microsoft.NETCore.App.Runtime.win-x863.1.18, 5.0.9 or later
- Microsoft.NETCore.App.Runtime.win-x643.1.18, 5.0.9 or later
- Microsoft.NETCore.App.Runtime.win-arm643.1.18, 5.0.9 or later
- Microsoft.NETCore.App.Runtime.win-arm3.1.18, 5.0.9 or later
- Microsoft.NETCore.App.Runtime.osx-x643.1.18, 5.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.osx-x645.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x645.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x645.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm645.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x645.0.9 or later
- Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x645.0.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft .net | 5.0 ≤ v ≤ 5.0.8 | — |
| microsoft .net_core | 2.1 ≤ v ≤ 2.1.28, 3.1 ≤ v ≤ 3.1.17 | — |
| microsoft powershell_core | 7.0 ≤ v < 7.0.7, 7.1 ≤ v < 7.1.4 | 7.0.7, 7.1.4 |
| microsoft visual_studio_2017 | 15.0 ≤ v ≤ 15.9 | — |
| microsoft visual_studio_2019 | 16.0 ≤ v ≤ 16.10, 8.10 | — |
| Microsoft.NETCore.App.Runtime.win-x86NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.win-x64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.win-arm64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.win-armNuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.osx-x64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.osx-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.linux-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.linux-arm64NuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.Mono.linux-armNuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.linux-x64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.linux-musl-x64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.linux-musl-arm64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.linux-musl-armNuGet | 5.0.0 ≤ v < 5.0.9 | 5.0.9 |
| Microsoft.NETCore.App.Runtime.rhel.6-x64NuGet | 3.1.0 ≤ v < 3.1.18 | 3.1.18 |
| Microsoft.NETCore.App.Runtime.linux-arm64NuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
| Microsoft.NETCore.App.Runtime.linux-armNuGet | 3.1.0 ≤ v < 3.1.18, 5.0.0 ≤ v < 5.0.9 | 3.1.18, 5.0.9 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.