Check: WDNS-IA-000008
Microsoft Windows 2012 Server Domain Name System STIG:
WDNS-IA-000008
(in versions v2 r6 through v1 r13)
Title
The Windows 2012 DNS Server permissions must be set so that the key file can only be read or modified by the account that runs the name server software. (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 Windows Explorer. Navigate to the following location: %ALLUSERSPROFILE%\Microsoft\Crypto Note: If the %ALLUSERSPROFILE%\Microsoft\Crypto folder doesn't exist, this is not applicable. Verify the permissions on the folder, sub-folders and files are limited to “SYSTEM” and Administrators for “FULL CONTROL”. If any other user or group has greater than READ permissions to 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 Modify permissions on the folder, sub-folders and files to “FULL CONTROL” for “SYSTEM” and Administrators and to “READ” for all other Users/Groups.
Additional Identifiers
Rule ID: SV-215606r879613_rule
Vulnerability ID: V-215606
Group Title: SRG-APP-000176-DNS-000019
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 |