Title

The information system must automatically remove or disable emergency accounts after the crisis is resolved or 72 hours. (Cat II impact)

Discussion

Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid account activation is required. Therefore, emergency account activation may bypass normal account authorization processes. If these accounts are automatically disabled, system maintenance during emergencies may not be possible, thus adversely affecting system availability. Emergency accounts are different from infrequently used accounts (i.e., local logon accounts used by the organization's system administrators when network or normal logon/access is not available). Infrequently used accounts are not subject to automatic termination dates. Emergency accounts are accounts created in response to crisis situations, usually for use by maintenance personnel. The automatic expiration or disabling time period may be extended as needed until the crisis is resolved; however, it must not be extended indefinitely. A permanent account should be established for privileged users who need long-term maintenance accounts. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access mechanisms that meet or exceed access control policy requirements. Satisfies: SRG-OS-000123-GPOS-00064

Check Content

Verify the operating system is configured such that emergency administrator accounts are automatically removed or disabled within 72 hours. If it is not, this is a finding. List all the user accounts on the system as well as their expiration times: # cut -d: -f1,7 /etc/master.passwd Ask the SA which accounts are emergency accounts, if any. If any emergency accounts do not have an expiration within 72 hours, this is a finding.

Fix Text

Configure the operating system such that emergency administrator accounts are automatically removed or disabled within 72 hours.

Additional Identifiers

Rule ID:

Vulnerability ID: V-640

Group Title:

Expert Comments

CCIs tied to check.

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