The DNS implementation must automatically audit account modification.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-33845	SRG-NET-000007-DNS-000008	SV-44298r1_rule		Low

Description
As most accounts in the domain name system 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, administrative, or system 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 affecting user accessibility and DNS service processing, the system must audit account modification 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 provides logging that can be used for forensic purposes.

Description

As most accounts in the domain name system 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, administrative, or system 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 affecting user accessibility and DNS service processing, the system must audit account modification 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 provides logging that can be used for forensic purposes.

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

Details

Check Text ( C-41902r1_chk )
Review the DNS system and/or configuration files to determine if account modification is being audited and an audit record is generated. If there is not a viewable, configurable option, request the administrator modify an account and view the logs generated to validate the account modification is logged. If account modification is not audited, this is a finding.

Fix Text (F-37775r1_fix)
Configure the DNS system to audit all account modifications. Auditing functions will be performed by the DNS application if the capability exists. If the capability does not exist the underlying platform's audit system may be used.