title: ASP.NET and .NET Elevation of Privilege Vulnerability
description: An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.
To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.
The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.
problem types: Elevation of Privilege
affected:
{
vendor: Microsoft
product: Microsoft .NET Framework 4.8
cpes: cpe:2.3:a:microsoft:.net:4.8:*:*:*:*:*:*:*
platforms: [Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems, Windows 10 Version 1709 for x64-based Systems, Windows 8.1 for x64-based systems, Windows 8.1 for 32-bit systems, Windows 7 for 32-bit Systems Service Pack 1, Windows Server 2016 (Server Core installation), Windows 10 Version 1607 for x64-based Systems, Windows Server 2016, Windows Server 2012 R2 (Server Core installation), Windows 7 for x64-based Systems Service Pack 1, Windows Server 2012 R2, Windows Server 2012, Windows Server 2012 (Server Core installation), 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 RT 8.1]
versions:
version: 4.8.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5 AND 4.8
cpes: cpe:2.3:a:microsoft:.net:4.8:*:*:*:*:*:*:*
platforms: [Windows 10 Version 1909 for 32-bit Systems, Windows Server 2019, Windows 10 Version 1809 for 32-bit Systems, Windows Server 2019 (Server Core installation), Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows 10 Version 1909 for x64-based Systems, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1909 for ARM64-based Systems, Windows 10 Version 2004 for ARM64-based Systems, Windows Server, version 1909 (Server Core installation), Windows Server, version 1903 (Server Core installation), Windows 10 Version 1903 for x64-based Systems, Windows Server, version 2004 (Server Core installation), Windows 10 Version 2004 for x64-based Systems, Windows 10 Version 2004 for 32-bit Systems]
versions:
version: 4.8.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 2.0 Service Pack 2
cpes: cpe:2.3:a:microsoft:.net:2.0:sp2:*:*:*:*:*:*
platforms: [Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2]
versions:
version: 2.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 4.5.2
cpes: cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
platforms: [Windows Server 2012 R2 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems, Windows 7 for x64-based Systems Service Pack 1, Windows 7 for 32-bit Systems Service Pack 1, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows RT 8.1, Windows Server 2008 for x64-based Systems Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2, Windows 8.1 for x64-based systems, Windows Server 2012 (Server Core installation)]
versions:
version: 4.0.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
cpes: cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
platforms: [Windows RT 8.1, Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows 8.1 for x64-based systems, Windows 7 for 32-bit Systems Service Pack 1, Windows 8.1 for 32-bit systems]
versions:
version: 4.0.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5 AND 4.7.2
cpes: cpe:2.3:a:microsoft:.net:4.7.2:*:*:*:*:*:*:*
platforms: [Windows 10 Version 1803 for ARM64-based Systems, Windows 10 Version 1803 for x64-based Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows Server 2019 (Server Core installation), Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019]
versions:
version: 4.7.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
cpes: cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
platforms: [Windows 10 Version 1607 for x64-based Systems, Windows 10 Version 1607 for 32-bit Systems, Windows Server 2016, Windows Server 2016 (Server Core installation)]
versions:
version: 3.0.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2
cpes: cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
platforms: [Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems]
versions:
version: 3.5.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2
cpes: cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
platforms: [Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems, Windows 10 Version 1709 for ARM64-based Systems]
versions:
version: 3.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 4.6
cpes: cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
platforms: [Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2]
versions:
version: 4.0.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5
cpes: cpe:2.3:a:microsoft:.net:3.5:*:*:*:*:*:*:*
platforms: [Windows 8.1 for x64-based systems, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems, Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2]
versions:
version: 3.5.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft .NET Framework 3.5.1
cpes: cpe:2.3:a:microsoft:.net:3.5.1:*:*:*:*:*:*:*
platforms: [Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows 7 for 32-bit Systems Service Pack 1]
versions:
version: 3.5.0, lessThan: publication, versionType: custom, status: affected
}
