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Description

A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft .NET Framework 4.5.2 Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2012, Windows Server 2012 (Server Core ins… —
Microsoft Microsoft .NET Framework 4.6 Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2 —
Microsoft .NET Core 1, 2.1, 2.2 —
Microsoft Microsoft Visual Studio 2017 —
Microsoft Microsoft .NET Framework 4.7.2 Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems, Windows Server, version 1803 (Server Core Installation), Windows 10 Version 1803 for ARM64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Ser… —
Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2 Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems —
Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2012, Windows Server 2012 (Server Core ins… —
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Windows Server 2016, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 (Server Core installation) —
Microsoft Microsoft .NET Framework 4.7/4.7.1/4.7.2 Windows 10 Version 1703 for 32-bit Systems, Windows 10 Version 1703 for x64-based Systems —
Microsoft Microsoft .NET Framework 4.7.1/4.7.2 Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems, Windows Server, version 1709 (Server Core Installation), Windows 10 Version 1709 for ARM64-based Systems —
Microsoft PowerShell Core 6.1, 6.2 —
Microsoft Microsoft Visual Studio 2017 version 15.9 —
Microsoft Microsoft .NET Framework 3.5 Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows Server 2016, Wi… —
Microsoft Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 —
Microsoft Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 —
Microsoft Microsoft .NET Framework 3.5.1 Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service … —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Red Hat Rhel Dotnet 2 rh-dotnet21 +1 2.1-7.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 2 rh-dotnet21-dotnet +2 2.1.504-1.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 2 rh-dotnet21-dotnet-host +1 2.1.8-1.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 2 rh-dotnet22 +1 2.2-3.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 2 rh-dotnet22-dotnet +2 2.2.104-2.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 2 rh-dotnet22-dotnet-host +2 2.2.2-2.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 1 rh-dotnetcore10-dotnetcore 1.0.14-1.el7 RHSA-2019:0349
Red Hat Rhel Dotnet 1 rh-dotnetcore11-dotnetcore 1.1.11-2.el7 RHSA-2019:0349

Affected packages

EcosystemPackageAffectedFixedRecord
NuGet Microsoft.NETCore.App >= 2.2.0, < 2.2.2 2.2.2 GHSA-x5qj-9vmx-7g6g
NuGet Microsoft.NETCore.App >= 2.1.0, < 2.1.8 2.1.8 GHSA-x5qj-9vmx-7g6g
NuGet System.Private.Uri >= 4.3.0, < 4.3.2 4.3.2 GHSA-x5qj-9vmx-7g6g

Advisories 1

References