Ensure 'maxURL request filter' is configured

НискаНиво 2Аутоматскаiis

Опис

The maxURL attribute of the <requestLimits> property is the maximum length (in Bytes) in which a requested URL can be (excluding query string) in order for IIS to accept. Configuring this Request Filter enables administrators to restrict the length of the requests that the server will accept. It is recommended that a limit be put on the length of URL. requestLimits maxUrl must be 4096 or lower at server level and for every site (default 4096). PowerShell 5.1 with the WebAdministration module; run elevated.

Како се проверава

Метод провере: Команда љуске

shell

Import-Module WebAdministration -ErrorAction Stop; $paths = @('MACHINE/WEBROOT/APPHOST') + @(Get-Website | ForEach-Object { "IIS:\Sites\$($_.Name)" }); $bad = @($paths | Where-Object { $c = Get-WebConfiguration -Filter 'system.webServer/security/requestFiltering/requestLimits' -PSPath $_; [long]$c.maxUrl -gt 4096 }); if ($bad.Count -eq 0) { 'compliant' } else { 'noncompliant' }

Очекивани излаз: compliant

Како се исправља

Метод исправке: Смерница или закрпа инфраструктуре

Set-WebConfigurationProperty -PSPath 'MACHINE/WEBROOT/APPHOST' -Filter system.webServer/security/requestFiltering/requestLimits -Name maxUrl -Value 4096

Својства

Оперативни системи: Било који
Ознаке: iisrequest-filtering
Референца: CIS Microsoft IIS 10 Benchmark v1.2.1 - 4.2 Ensure 'maxURL request filter' is configured

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shell

tmaegis scan --target iis --level 2