WDNS-IA-000006 - The Windows 2012 DNS Server must be configured to enforce authorized access to the corresponding private key.

Information

The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.

SIG(0) is used for server-to-server authentication for DNS transactions, and it uses PKI-based authentication. So, in cases where SIG(0) is being used instead of TSIG (which uses a shared key, not PKI-based authentication), this requirement is applicable.

Solution

Access Windows Explorer.

Navigate to the following location:

%ALLUSERSPROFILE%\Microsoft\Crypto

Modify permissions on the keys folder, sub-folders, and files to be limited to SYSTEM and Administrators FULL CONTROL and to all other Users/Groups to READ.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Windows_2012_Server_DNS_V2R7_STIG.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-5(2)(b), CAT|II, CCI|CCI-000186, Rule-ID|SV-215604r961041_rule, STIG-ID|WDNS-IA-000006, STIG-Legacy|SV-73071, STIG-Legacy|V-58641, Vuln-ID|V-215604

Plugin: Windows

Control ID: c21f9c24b3ed4ff1222c7eb371c4b8b184039eb31b82b385dbeb0fdbbb40b1e8