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., aka 'Microsoft ASP.NET Core Security Feature Bypass Vulnerability'.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2020-1045 - High Severity Vulnerability
Vulnerable Library - microsoft.aspnetcore.http.2.1.1.nupkg
ASP.NET Core default HTTP feature implementations.
Library home page: https://api.nuget.org/packages/microsoft.aspnetcore.http.2.1.1.nupkg
Path to dependency file: /src/Ci.Extension.AspNetCore/Ci.Extension.AspNetCore.csproj
Path to vulnerable library: /home/wss-scanner/.nuget/packages/microsoft.aspnetcore.http/2.1.1/microsoft.aspnetcore.http.2.1.1.nupkg
Dependency Hierarchy: - Microsoft.AspNetCore.Mvc.Core-2.1.34 (Root Library) - microsoft.aspnetcore.authentication.core.2.1.1.nupkg - :x: **microsoft.aspnetcore.http.2.1.1.nupkg** (Vulnerable Library)
Found in HEAD commit: 64486d8b998c8e372d17b403c47d3e7af392c719
Found in base branch: master
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., aka 'Microsoft ASP.NET Core Security Feature Bypass Vulnerability'.
Publish Date: 2020-09-11
URL: CVE-2020-1045
CVSS 3 Score Details (7.5)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://github.com/dotnet/announcements/issues/165
Release Date: 2020-10-02
Fix Resolution: Microsoft.AspNetCore.App - 2.1.22, Microsoft.AspNetCore.All - 2.1.22,Microsoft.NETCore.App - 2.1.22, Microsoft.AspNetCore.Http - 2.1.22
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