The DNS implementation must notify the appropriate individuals for account termination.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-33850	SRG-NET-000012-DNS-000013	SV-44303r1_rule		Medium

Description
As most accounts in the DNS are privileged or system level accounts, account management and distribution is vital to the security of the DNS implementation and infrastructure. If an attacker compromises an account, the entire DNS infrastructure, not to mention the hosts on the network, is at risk. Authentication for user or administrative access to the system is required at all times. Accounts are utilized for identifying individual application users or for identifying the application processes themselves. When DNS accounts are terminated, user accessibility may be affected. In order to detect and respond to events that affect user accessibility and application processing, applications must audit account termination actions and, as required, notify the appropriate individuals so they can investigate the event to ensure its validity. Such a capability greatly reduces the risk that DNS accessibility will be negatively affected for extended periods of time and also provides auditing capability that can be used for forensic purposes.

Description

As most accounts in the DNS are privileged or system level accounts, account management and distribution is vital to the security of the DNS implementation and infrastructure. If an attacker compromises an account, the entire DNS infrastructure, not to mention the hosts on the network, is at risk. Authentication for user or administrative access to the system is required at all times. Accounts are utilized for identifying individual application users or for identifying the application processes themselves. When DNS accounts are terminated, user accessibility may be affected. In order to detect and respond to events that affect user accessibility and application processing, applications must audit account termination actions and, as required, notify the appropriate individuals so they can investigate the event to ensure its validity. Such a capability greatly reduces the risk that DNS accessibility will be negatively affected for extended periods of time and also provides auditing capability that can be used for forensic purposes.

STIG	Date
Domain Name System (DNS) Security Requirements Guide	2012-10-24

Details

Check Text ( C-41907r1_chk )
Review the DNS system and/or configuration files to determine if the system notifies the appropriate individuals when accounts are terminated. If there is not a viewable, configurable option, request the administrator terminate and verify notification is sent to the appropriate individuals. If the appropriate individuals are not notified upon account termination, this is a finding.

Fix Text (F-37780r1_fix)
Configure the DNS system to notify appropriate individuals upon account termination. The account management functions will be performed by the DNS application if the capability exists. If the capability does not exist the underlying platform's account management system may be used.