V-286220

Discussion

The DoW standard for authentication of an interactive user is the presentation of a common access card (CAC) or other physical token bearing a valid, current, DoW-issued Public Key Infrastructure (PKI) certificate, coupled with a Personal Identification Number (PIN) to be entered by the user at the beginning of each session and whenever re-authentication is required. Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When applications provide the capability to change security roles or escalate the functional capability of the application, it is critical the user re-authenticate. In addition to the re-authentication requirements associated with session locks, organizations may require re-authentication of individuals and/or devices in other situations, including (but not limited to) the following circumstances: (i) When authenticators change; (ii) When roles change; (iii) When security categories of information systems change; (iv) When the execution of privileged functions occurs; (v) After a fixed period of time; or (vi) Periodically. Within the DoW, the minimum circumstances requiring re-authentication are privilege escalation and role changes.

Check Content

Review the system documentation and the configuration of the DBMS and related applications and tools.

If there are any circumstances under which a user is not required to re-authenticate when changing role or escalating privileges, this is a finding.

If the information owner has identified additional cases where re-authentication is needed, but there are circumstances where the system does not ask the user to re-authenticate when those cases occur, this is a finding.
 
Determine all situations where a user must re-authenticate. Check if the mechanisms that handle such situations. To make a single user re-authenticate, the following must be present:

KILL < ID >

where ID is the process ID of the connection.
 
To generate a script to make all users re-authenticate, run the following as the DBA:

SELECT CONCAT( 'KILL CONNECTION ' ,id, ';') AS KillQuery FROM information_schema.processlist where time = 0;