Check: WDNS-IA-000007
Microsoft Windows 2012 Server Domain Name System STIG:
WDNS-IA-000007
(in versions v2 r6 through v1 r13)
Title
The Windows 2012 DNS Server key file must be owned by the account under which the Windows 2012 DNS Server service is run. (Cat II impact)
Discussion
To enable zone transfer (requests and responses) through authenticated messages, it is necessary to generate a key for every pair of name servers. The key can also be used for securing other transactions, such as dynamic updates, DNS queries, and responses. The binary key string that is generated by most key generation utilities used with DNSSEC is Base64-encoded. TSIG is a string used to generate the message authentication hash stored in a TSIG RR and used to authenticate an entire DNS message.
Check Content
Access Services on the Windows DNS Server and locate the DNS Server Service. Determine the account under which the DNS Server Service is running. Access Windows Explorer. Navigate to the following location: %ALLUSERSPROFILE%\Microsoft\Crypto Note: If the %ALLUSERSPROFILE%\Microsoft\Crypto folder doesn't exist, this is not applicable. Right-click on each sub-folder, choose “Properties”, click on the “Security” tab, and click on the “Advanced” button. Verify the Owner on the folder, sub-folders, and files are the account under which the DNS Server Service is running. If any other user or group is listed as OWNER of the %ALLUSERSPROFILE%\Microsoft\Crypto folder, sub-folders, and files, this is a finding.
Fix Text
Access Windows Explorer. Navigate to the following location: %ALLUSERSPROFILE%\Microsoft\Crypto Right-click on each sub-folder, choose “Properties”, click on the “Security” tab, and click on the “Advanced” button. Click on "Change" next to the listed Owner and change to be the account under which the DNS Server Service is running.
Additional Identifiers
Rule ID: SV-215605r879613_rule
Vulnerability ID: V-215605
Group Title: SRG-APP-000176-DNS-000018
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000186 |
The information system, for PKI-based authentication, enforces authorized access to the corresponding private key. |
Controls
Number | Title |
---|---|
IA-5 (2) |
Pki-Based Authentication |