Detections
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APPNET0064 - .Net applications that invoke NetFx40_LegacySecurityPolicy must apply previous versions of .NET STIG guidance.

Information

CAS policy is .NET runtime version-specific. In .NET Framework version 4, CAS policy is disabled by default however; it can be re-enabled by using the NetFx40_LegacySecurityPolicy setting on a per application basis. Caspol.exe is provided by Microsoft to set security policy on .Net applications prior to version 4.0. This requirement does not apply to the caspol.exe assembly or other assemblies provided with the Windows OS or the Windows Secure Host Baseline (SHB).

When invoking the NetFx40_LegacySecurityPolicy setting in .NET 4, earlier versions of the .NET Framework CAS policy will become active therefore previous .NET STIG guidance that applies to the reactivated versions must also be applied.

Failure to apply applicable versions of STIG guidance can result in the loss of system confidentiality, integrity or availability.

Solution

The infrastructure to enable CAS exists only in .NET Framework 2.x - 4.x.

The requirement is Not Applicable (NA) for .NET Framework > 4.x.

(Note: The infrastructure is deprecated and is not receiving servicing or security fixes.)

Apply the .NET Framework Security Checklist for .Net versions 1 through 3.5 when using the NetFx40_LegacySecurityPolicy setting.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_DotNet_Framework_4-0_V2R7_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|III, CCI|CCI-000366, Rule-ID|SV-225232r1050651_rule, STIG-ID|APPNET0064, STIG-Legacy|SV-40979, STIG-Legacy|V-30937, Vuln-ID|V-225232

Plugin: Windows

Control ID: eb322f6100f9af74749913d1a3dce26bf049d79f84fa748d6835ae0cbb5146c8