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microsoft.aspnetcore.server.httpsys.2.0.1.nupkg: 4 vulnerabilities (highest severity is: 9.2) [master] (reachable) #68

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microsoft.aspnetcore.server.httpsys.2.0.1.nupkg: 4 vulnerabilities (highest severity is: 9.2) [master] (reachable)#68

Description

@mend-developer-platform-dev
mend-developer-platform-dev
bot
opened on Sep 28, 2025
📂 Vulnerable Library - microsoft.aspnetcore.server.httpsys.2.0.1.nupkg

ASP.NET Core HTTP server that uses the Windows HTTP Server API.

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.server.httpsys/2.0.1/microsoft.aspnetcore.server.httpsys.2.0.1.nupkg

Findings

Finding Severity 🎯 CVSS Exploit Maturity EPSS Library Type Fixed in Remediation Available Reachability
CVE-2021-26701 🟣 Critical 9.2 Unproven 1.7% system.text.encodings.web.4.4.0.nupkg Transitive N/A ❌ Reachable
CVE-2017-11883 🔴 High 8.7 Not Defined 20.3% microsoft.aspnetcore.server.httpsys.2.0.1.nupkg Direct Microsoft.Net.Http.Server - 1.0.6,Microsoft.AspNetCore.Server.HttpSys - 2.0.2,Microsoft.AspNetCore.Server.WebListener - 1.0.6,Microsoft.Net.Http.Server - 1.1.4,Microsoft.AspNetCore.Server.WebListener - 1.1.4 ✅ Unreachable
CVE-2018-0808 🔴 High 8.7 Not Defined 9.9% microsoft.aspnetcore.hosting.2.0.1.nupkg Transitive N/A ❌ Reachable
CVE-2020-1045 🔴 High 7.7 Proof of concept 20.4% microsoft.aspnetcore.http.2.0.1.nupkg Transitive N/A ❌ Unreachable

Details

🟣CVE-2021-26701

Vulnerable Library - system.text.encodings.web.4.4.0.nupkg

Provides types for encoding and escaping strings for use in JavaScript, HyperText Markup Language (H...

Library home page: https://api.nuget.org/packages/system.text.encodings.web.4.4.0.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/system.text.encodings.web/4.4.0/system.text.encodings.web.4.4.0.nupkg

Dependency Hierarchy:

  • microsoft.aspnetcore.authentication.jwtbearer.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.2.0.1.nupkg
      • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
        • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
          • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
            • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.identity.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.identity.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.cookies.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.2.0.1.nupkg
          • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
            • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
              • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
                • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.azureappservices.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.session.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecaching.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.spaservices.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.microsoftaccount.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
      • microsoft.aspnetcore.http.2.0.1.nupkg
        • microsoft.aspnetcore.webutilities.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.diagnostics.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
      • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.middlewareanalysis.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.diagnostics.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.rewrite.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.facebook.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.localization.routing.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.routing.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.applicationinsights.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.razor.runtime.2.0.1.nupkg
      • microsoft.aspnetcore.html.abstractions.2.0.0.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.openidconnect.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.dataprotection.azurestorage.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.websockets.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.extensions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.staticfiles.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.visualstudio.web.browserlink.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
      • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.formatters.xml.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
      • microsoft.aspnetcore.routing.2.0.1.nupkg
        • microsoft.aspnetcore.routing.abstractions.2.0.1.nupkg
          • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
            • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.owin.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.2.0.1.nupkg
      • microsoft.aspnetcore.webutilities.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecompression.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.http.extensions.2.0.1.nupkg
      • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
        • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.google.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.dataprotection.extensions.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
        • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.razor.viewcompilation.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • microsoft.aspnetcore.http.2.0.1.nupkg
        • microsoft.aspnetcore.webutilities.2.0.1.nupkg
          • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.twitter.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.dataprotection.2.0.1.nupkg
          • microsoft.aspnetcore.hosting.abstractions.2.0.1.nupkg
            • microsoft.aspnetcore.http.abstractions.2.0.1.nupkg
              • ❌ system.text.encodings.web.4.4.0.nupkg (Vulnerable Library)

Reachability Analysis

This vulnerability is potentially reachable:

- dvcsharp_core_api.AuthorizationsController (Application)
    - Microsoft.AspNetCore.Mvc.Controller (Extension)
        - Microsoft.AspNetCore.Http.HttpContext (Extension)
            - Microsoft.AspNetCore.Http.HttpRequest (Extension)
                - Microsoft.AspNetCore.Http.QueryString (Extension)
                    -> ❌ System.Text.Encodings.Web.TextEncoder (Vulnerable Component)

Vulnerability Details

.NET Core Remote Code Execution Vulnerability

Publish Date: Feb 25, 2021 11:02 PM

URL: CVE-2021-26701

Threat Assessment

Exploit Maturity:Unproven

EPSS:1.7%

Score: 9.2

Suggested Fix

Type: Upgrade version

Origin: GHSA-ghhp-997w-qr28

Release Date: Feb 25, 2021 11:02 PM

Fix Resolution : System.Text.Encodings.Web - 4.7.2,System.Text.Encodings.Web - 5.0.1,System.Text.Encodings.Web - 4.5.1

🔴CVE-2017-11883

Vulnerable Library - microsoft.aspnetcore.server.httpsys.2.0.1.nupkg

ASP.NET Core HTTP server that uses the Windows HTTP Server API.

Library home page: https://api.nuget.org/packages/microsoft.aspnetcore.server.httpsys.2.0.1.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.server.httpsys/2.0.1/microsoft.aspnetcore.server.httpsys.2.0.1.nupkg

Dependency Hierarchy:

  • ❌ microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Vulnerable Library)

Reachability Analysis

The vulnerable code is unreachable

Vulnerability Details

.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".

Publish Date: Nov 15, 2017 03:00 AM

URL: CVE-2017-11883

Threat Assessment

Exploit Maturity:Not Defined

EPSS:20.3%

Score: 8.7

Suggested Fix

Type: Upgrade version

Origin: GHSA-f9jc-rrm2-pmfg

Release Date: Nov 15, 2017 03:00 AM

Fix Resolution : Microsoft.Net.Http.Server - 1.0.6,Microsoft.AspNetCore.Server.HttpSys - 2.0.2,Microsoft.AspNetCore.Server.WebListener - 1.0.6,Microsoft.Net.Http.Server - 1.1.4,Microsoft.AspNetCore.Server.WebListener - 1.1.4

🔴CVE-2018-0808

Vulnerable Library - microsoft.aspnetcore.hosting.2.0.1.nupkg

ASP.NET Core hosting infrastructure and startup logic for web applications.

Library home page: https://api.nuget.org/packages/microsoft.aspnetcore.hosting.2.0.1.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.hosting/2.0.1/microsoft.aspnetcore.hosting.2.0.1.nupkg

Dependency Hierarchy:

  • microsoft.aspnetcore.azureappservices.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.azureappservicesintegration.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.hosting.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.server.kestrel.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.hosting.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.applicationinsights.hostingstartup.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.hosting.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.hosting.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.razor.viewcompilation.2.0.2.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.hosting.2.0.1.nupkg (Vulnerable Library)

Reachability Analysis

This vulnerability is potentially reachable:

- dvcsharp_core_api.Program (Application)
    - Microsoft.AspNetCore.WebHost (Extension)
        - Microsoft.AspNetCore.Hosting.WebHostBuilder (Extension)
            - Microsoft.AspNetCore.Hosting.Internal.WebHost (Extension)
                - Microsoft.AspNetCore.Hosting.Internal.HostingApplication (Extension)
                    -> ❌ Microsoft.AspNetCore.Hosting.Internal.HostingApplicationDiagnostics (Vulnerable Component)

Vulnerability Details

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to how ASP.NET web applications handle web requests, aka "ASP.NET Core Elevation Of Privilege Vulnerability". This CVE is unique from CVE-2018-0784.

Publish Date: Mar 14, 2018 05:00 PM

URL: CVE-2018-0808

Threat Assessment

Exploit Maturity:Not Defined

EPSS:9.9%

Score: 8.7

Suggested Fix

Type: Upgrade version

Origin: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0808

Release Date: Mar 14, 2018 05:00 PM

Fix Resolution : Microsoft.AspNetCore.Server.IISIntegration - 2.1.0, Microsoft.AspNetCore.Hosting - 2.1.0

🔴CVE-2020-1045

Vulnerable Library - microsoft.aspnetcore.http.2.0.1.nupkg

ASP.NET Core default HTTP feature implementations.

Library home page: https://api.nuget.org/packages/microsoft.aspnetcore.http.2.0.1.nupkg

Path to dependency file: /dvcsharp-core-api.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.http/2.0.1/microsoft.aspnetcore.http.2.0.1.nupkg

Dependency Hierarchy:

  • microsoft.aspnetcore.authentication.jwtbearer.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.identity.entityframeworkcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.identity.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.cookies.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.2.0.1.nupkg
          • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
            • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.azureappservices.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.azureappservicesintegration.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.server.kestrel.2.0.1.nupkg
      • microsoft.aspnetcore.hosting.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.facebook.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.applicationinsights.hostingstartup.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.openidconnect.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.responsecaching.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.spaservices.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.cookiepolicy.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.formatters.xml.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
      • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
        • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.owin.2.0.1.nupkg (Root Library)

    • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.google.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.microsoftaccount.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.mvc.viewfeatures.2.0.2.nupkg
      • microsoft.aspnetcore.mvc.core.2.0.2.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.server.httpsys.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.mvc.razor.viewcompilation.2.0.2.nupkg (Root Library)

    • microsoft.aspnetcore.hosting.2.0.1.nupkg
      • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

  • microsoft.aspnetcore.authentication.twitter.2.0.1.nupkg (Root Library)

    • microsoft.aspnetcore.authentication.oauth.2.0.1.nupkg
      • microsoft.aspnetcore.authentication.2.0.1.nupkg
        • microsoft.aspnetcore.authentication.core.2.0.1.nupkg
          • ❌ microsoft.aspnetcore.http.2.0.1.nupkg (Vulnerable Library)

Reachability Analysis

The vulnerable code is unreachable

Vulnerability Details

A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.

The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.

The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.

Publish Date: Sep 11, 2020 12:00 AM

URL: CVE-2020-1045

Threat Assessment

Exploit Maturity:Proof of concept

EPSS:20.4%

Score: 7.7

Suggested Fix

Type: Upgrade version

Origin: GHSA-hxrm-9w7p-39cc

Release Date: Sep 11, 2020 12:00 AM

Fix Resolution : Microsoft.AspNetCore.Http - 2.1.22,Microsoft.AspNetCore.App.Runtime.win-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.osx-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-arm - 3.1.8,Microsoft.AspNetCore.App - 2.1.22,Microsoft.AspNetCore.App.Runtime.win-arm - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-musl-x64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.linux-arm64 - 3.1.8,Microsoft.AspNetCore.App.Runtime.win-x64 - 3.1.8,Microsoft.Owin - 4.1.1,Microsoft.AspNetCore.App.Runtime.win-x86 - 3.1.8

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