Title

The Windows 2012 DNS Server must restrict individuals from using it for launching Denial of Service (DoS) attacks against other information systems. (Cat II impact)

Discussion

Applications and application developers must take the steps needed to ensure users cannot use an authorized application to launch DoS attacks against other systems and networks. For example, applications may include mechanisms that throttle network traffic so users are not able to generate unlimited network traffic via the application. Limiting system resources that are allocated to any user to a bare minimum may also reduce the ability of users to launch some DoS attacks.

Check Content

Review the DNS server to confirm the server restricts direct and remote console access to users other than Administrators. Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any accounts or groups other than the following are granted the "Allow log on through Remote Desktop Services" user right, this is a finding: Administrators Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following accounts or groups are not defined for the "Deny access to this computer from the network" user right, this is a finding: Guests Group Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If the following accounts or groups are not defined for the "Deny log on locally" user right, this is a finding: Guests Group

Fix Text

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Allow log on through Remote Desktop Services" to only include the following accounts or groups: Administrators Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny access to this computer from the network" to include the following: Guests Group Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following: Guests Group

Additional Identifiers

Rule ID: SV-215632r961152_rule

Vulnerability ID: V-215632

Group Title: SRG-APP-000246-DNS-000035

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.