High severity7.5NVD Advisory· Published May 21, 2020· Updated Aug 19, 2026
CVE-2020-1161
CVE-2020-1161
Description
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.AspNetCore.App.Runtime.linux-armNuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.linux-arm64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.osx-x64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.win-armNuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Microsoft.AspNetCore.App.Runtime.win-x86NuGet | >= 3.1.0, < 3.1.4 | 3.1.4 |
Affected products
18- cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*Range: >=15.1,<=15.9
- osv-coords10 versionspkg:bitnami/aspnet-corepkg:nuget/microsoft.aspnetcore.app.runtime.linux-armpkg:nuget/microsoft.aspnetcore.app.runtime.linux-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-musl-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-musl-x64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-x64pkg:nuget/microsoft.aspnetcore.app.runtime.osx-x64pkg:nuget/microsoft.aspnetcore.app.runtime.win-armpkg:nuget/microsoft.aspnetcore.app.runtime.win-x64pkg:nuget/microsoft.aspnetcore.app.runtime.win-x86
>= 3.1.0, < 3.1.1+ 9 more
- (no CPE)range: >= 3.1.0, < 3.1.1
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- (no CPE)range: >= 3.1.0, < 3.1.4
- Microsoft/Microsoft Visual Studio 2017 version 15.9 (includes 15.1 - 15.8)v5Range: unspecified
- Microsoft/Microsoft Visual Studio 2019v5Range: 16.0
- Microsoft/Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)v5Range: unspecified
- Microsoft/Microsoft Visual Studio 2019 version 16.5v5Range: unspecified
Patches
Vulnerability mechanics
References
5- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1161nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-3cf7-7wq6-8842ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-1161ghsaADVISORY
- github.com/aspnet/Announcements/issues/416ghsaWEB
- msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1161nvd
News mentions
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