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CVE-2020-1597

HIGH

ASP.NET Core Denial of Service Vulnerability

Published May 24, 2022Updated February 18, 2024Source: osv

Summary

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka `ASP.NET Core Denial of Service Vulnerability`.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x86 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.osx-x64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-musl-x64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 3.1.7
NuGet
Update Microsoft.AspNetCore.All to 2.1.21 or later
dotnet add package Microsoft.AspNetCore.All --version 2.1.21
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-arm to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.linux-x64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App to 2.1.21 or later
dotnet add package Microsoft.AspNetCore.App --version 2.1.21
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-arm64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 3.1.7
NuGet
Update Microsoft.AspNetCore.App.Runtime.win-x64 to 3.1.7 or later
dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 3.1.7

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (12)

PackageEcosystemAffectedFixed In
Microsoft.AspNetCore.App.Runtime.win-x86
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.linux-arm64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.osx-x64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.linux-musl-x64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.win-arm
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.All
nuget
2.1.0, 2.1.1, 2.1.10, 2.1.11 (+17 more)2.1.21
Microsoft.AspNetCore.App.Runtime.linux-arm
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App.Runtime.linux-x64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7
Microsoft.AspNetCore.App
nuget
2.1.0, 2.1.1, 2.1.10, 2.1.11 (+17 more)2.1.21
Microsoft.AspNetCore.App.Runtime.win-arm64
nuget
3.1.5, 3.1.63.1.7
Microsoft.AspNetCore.App.Runtime.win-x64
nuget
3.1.0, 3.1.1, 3.1.2, 3.1.3 (+3 more)3.1.7

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-20
    Improper Input ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Frequently Asked Questions

What is CVE-2020-1597?
ASP.NET Core Denial of Service Vulnerability This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2020-1597?
CVE-2020-1597 affects Microsoft.AspNetCore.App.Runtime.win-x86, Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 and Microsoft.AspNetCore.App.Runtime.linux-arm64 (and 9 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-1597 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-f8qx-mjcq-wfgx
BIT-aspnet-core-2020-1597

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    CRITICAL

    Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability

  • CVE-2024-35264
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  • CVE-2021-1723
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  • CVE-2023-33170
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    Microsoft Security Advisory CVE-2023-33170: .NET Security Feature Bypass Vulnerability

  • CVE-2025-24070
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    Microsoft Security Advisory CVE-2025-24070: .NET Elevation of Privilege Vulnerability

  • CVE-2020-1161
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  • CVE-2024-38229
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    Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability

  • CVE-2026-42899
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    Microsoft Security Advisory CVE-2026-42899 – ASP.NET Core Denial of Service Vulnerability

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