WA000-WI6094 IIS6 - The UriMaxUriBytes registry entry must be set properly.

Information

Http.sys is the kernel mode driver that handles HTTP requests. There are several registry keys associated with http.sys. The UriMaxUriBytes key is used to set size limits on what is cached in the kernel response cache. Setting this value to large may cause performance or Denial of Service conditions on the web server.

Solution

1. Open the registry editor.
2. Navigate to the following location in the registry: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters.
3. Set the value for the UriMaxUriBytes key to REG_DWORD 262144 or add the key and set it to REG_DWORD 262144.

See Also

http://iasecontent.disa.mil/stigs/zip/July2015/U_IIS_6-0_V6R16_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-5, CAT|II, Rule-ID|SV-38167r1_rule, STIG-ID|WA000-WI6094_IIS6, Vuln-ID|V-13721

Plugin: Windows

Control ID: 8dd26cd1cc7129d7a26aa1797e7882b4a949ec0b7db359e1080de3c9c9231db9